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1824 lines
55 KiB
C
1824 lines
55 KiB
C
/* Copyright (C) 2007-2018 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Anoop Saldanha <anoopsaldanha@gmail.com>
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*
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* Implements dce_iface keyword.
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*/
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#include "suricata-common.h"
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#include "detect.h"
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#include "detect-parse.h"
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#include "detect-engine.h"
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#include "detect-engine-mpm.h"
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#include "detect-engine-state.h"
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#include "detect-dce-iface.h"
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#include "flow.h"
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#include "flow-var.h"
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#include "flow-util.h"
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#include "app-layer.h"
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#include "app-layer-dcerpc.h"
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#include "queue.h"
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#include "stream-tcp-reassemble.h"
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#include "util-debug.h"
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#include "util-unittest.h"
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#include "util-unittest-helper.h"
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#include "stream-tcp.h"
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#include "rust.h"
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#include "rust-smb-detect-gen.h"
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#define PARSE_REGEX "^\\s*([0-9a-zA-Z]{8}-[0-9a-zA-Z]{4}-[0-9a-zA-Z]{4}-[0-9a-zA-Z]{4}-[0-9a-zA-Z]{12})(?:\\s*,\\s*(<|>|=|!)([0-9]{1,5}))?(?:\\s*,\\s*(any_frag))?\\s*$"
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static pcre *parse_regex = NULL;
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static pcre_extra *parse_regex_study = NULL;
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static int DetectDceIfaceMatchRust(DetectEngineThreadCtx *det_ctx,
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Flow *f, uint8_t flags, void *state, void *txv,
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const Signature *s, const SigMatchCtx *m);
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static int DetectDceIfaceSetup(DetectEngineCtx *, Signature *, const char *);
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static void DetectDceIfaceFree(void *);
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static void DetectDceIfaceRegisterTests(void);
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static int g_dce_generic_list_id = 0;
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static int InspectDceGeneric(ThreadVars *tv,
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DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx,
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const Signature *s, const SigMatchData *smd,
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Flow *f, uint8_t flags, void *alstate,
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void *txv, uint64_t tx_id);
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/**
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* \brief Registers the keyword handlers for the "dce_iface" keyword.
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*/
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void DetectDceIfaceRegister(void)
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{
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sigmatch_table[DETECT_DCE_IFACE].name = "dcerpc.iface";
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sigmatch_table[DETECT_DCE_IFACE].alias = "dce_iface";
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sigmatch_table[DETECT_DCE_IFACE].AppLayerTxMatch = DetectDceIfaceMatchRust;
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sigmatch_table[DETECT_DCE_IFACE].Setup = DetectDceIfaceSetup;
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sigmatch_table[DETECT_DCE_IFACE].Free = DetectDceIfaceFree;
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sigmatch_table[DETECT_DCE_IFACE].RegisterTests = DetectDceIfaceRegisterTests;
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DetectSetupParseRegexes(PARSE_REGEX, &parse_regex, &parse_regex_study);
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g_dce_generic_list_id = DetectBufferTypeRegister("dce_generic");
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DetectAppLayerInspectEngineRegister("dce_generic",
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ALPROTO_DCERPC, SIG_FLAG_TOSERVER, 0, InspectDceGeneric);
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DetectAppLayerInspectEngineRegister("dce_generic",
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ALPROTO_SMB, SIG_FLAG_TOSERVER, 0, InspectDceGeneric);
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DetectAppLayerInspectEngineRegister("dce_generic",
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ALPROTO_DCERPC, SIG_FLAG_TOCLIENT, 0, InspectDceGeneric);
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DetectAppLayerInspectEngineRegister("dce_generic",
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ALPROTO_SMB, SIG_FLAG_TOCLIENT, 0, InspectDceGeneric);
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}
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static int InspectDceGeneric(ThreadVars *tv,
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DetectEngineCtx *de_ctx, DetectEngineThreadCtx *det_ctx,
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const Signature *s, const SigMatchData *smd,
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Flow *f, uint8_t flags, void *alstate,
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void *txv, uint64_t tx_id)
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{
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return DetectEngineInspectGenericList(tv, de_ctx, det_ctx, s, smd,
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f, flags, alstate, txv, tx_id);
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}
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/**
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* \internal
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* \brief Parses the argument sent along with the "dce_iface" keyword.
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*
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* \param arg Pointer to the string containing the argument to be parsed.
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*
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* \retval did Pointer to a DetectDceIfaceData instance that holds the data
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* from the parsed arg.
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*/
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static DetectDceIfaceData *DetectDceIfaceArgParse(const char *arg)
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{
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DetectDceIfaceData *did = NULL;
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#define MAX_SUBSTRINGS 30
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int ret = 0, res = 0;
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int ov[MAX_SUBSTRINGS];
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uint8_t hex_value;
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char copy_str[128] = "";
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int i = 0, j = 0;
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int len = 0;
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char temp_str[3] = "";
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int version;
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ret = pcre_exec(parse_regex, parse_regex_study, arg, strlen(arg), 0, 0, ov,
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MAX_SUBSTRINGS);
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if (ret < 2) {
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SCLogError(SC_ERR_PCRE_MATCH, "pcre_exec parse error, ret %" PRId32 ", string %s", ret, arg);
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goto error;
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}
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if ( (did = SCMalloc(sizeof(DetectDceIfaceData))) == NULL)
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goto error;
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memset(did, 0, sizeof(DetectDceIfaceData));
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/* retrieve the iface uuid string. iface uuid is a compulsion in the keyword */
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res = pcre_copy_substring(arg, ov, MAX_SUBSTRINGS, 1, copy_str, sizeof(copy_str));
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if (res < 0) {
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SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_copy_substring failed");
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goto error;
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}
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/* parse the iface uuid string */
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len = strlen(copy_str);
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j = 0;
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temp_str[2] = '\0';
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for (i = 0; i < len; ) {
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if (copy_str[i] == '-') {
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i++;
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continue;
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}
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temp_str[0] = copy_str[i];
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temp_str[1] = copy_str[i + 1];
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hex_value = strtol(temp_str, NULL, 16);
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did->uuid[j] = hex_value;
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i += 2;
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j++;
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}
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/* if the regex has 3 or 5, any_frag option is present in the signature */
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if (ret == 3 || ret == 5)
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did->any_frag = 1;
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/* if the regex has 4 or 5, version/operator is present in the signature */
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if (ret == 4 || ret == 5) {
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/* first handle the version number, so that we can do some additional
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* validations of the version number, wrt. the operator */
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res = pcre_copy_substring(arg, ov, MAX_SUBSTRINGS, 3, copy_str, sizeof(copy_str));
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if (res < 0) {
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SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_copy_substring failed");
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goto error;
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}
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version = atoi(copy_str);
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if (version > UINT16_MAX) {
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SCLogError(SC_ERR_INVALID_SIGNATURE, "DCE_IFACE interface version "
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"invalid: %d\n", version);
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goto error;
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}
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did->version = version;
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/* now let us handle the operator supplied with the version number */
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res = pcre_copy_substring(arg, ov, MAX_SUBSTRINGS, 2, copy_str, sizeof(copy_str));
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if (res < 0) {
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SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_copy_substring failed");
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goto error;
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}
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switch (copy_str[0]) {
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case '<':
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if (version == 0) {
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SCLogError(SC_ERR_INVALID_SIGNATURE, "DCE_IFACE interface "
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"version invalid: %d. Version can't be less"
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"than 0, with \"<\" operator", version);
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goto error;
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}
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did->op = DETECT_DCE_IFACE_OP_LT;
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break;
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case '>':
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if (version == UINT16_MAX) {
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SCLogError(SC_ERR_INVALID_SIGNATURE, "DCE_IFACE interface "
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"version invalid: %d. Version can't be greater"
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"than %d, with \">\" operator", version,
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UINT16_MAX);
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goto error;
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}
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did->op = DETECT_DCE_IFACE_OP_GT;
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break;
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case '=':
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did->op = DETECT_DCE_IFACE_OP_EQ;
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break;
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case '!':
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did->op = DETECT_DCE_IFACE_OP_NE;
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break;
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}
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}
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return did;
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error:
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if (did != NULL)
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SCFree(did);
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return NULL;
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}
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/**
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* \internal
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* \brief Internal function that compares the dce interface version for this
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* flow, to the signature's interface version specified using the
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* dce_iface keyword.
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*
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* \param version The dce interface version for this flow.
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* \param dce_data Pointer to the Signature's dce_iface keyword
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* state(DetectDceIfaceData *).
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*/
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static inline int DetectDceIfaceMatchIfaceVersion(const uint16_t version,
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const DetectDceIfaceData *dce_data)
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{
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switch (dce_data->op) {
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case DETECT_DCE_IFACE_OP_LT:
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return (version < dce_data->version);
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case DETECT_DCE_IFACE_OP_GT:
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return (version > dce_data->version);
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case DETECT_DCE_IFACE_OP_EQ:
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return (version == dce_data->version);
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case DETECT_DCE_IFACE_OP_NE:
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return (version != dce_data->version);
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default:
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return 1;
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}
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}
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/**
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* \brief App layer match function for the "dce_iface" keyword.
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*
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* \param t Pointer to the ThreadVars instance.
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* \param det_ctx Pointer to the DetectEngineThreadCtx.
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* \param f Pointer to the flow.
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* \param flags Pointer to the flags indicating the flow direction.
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* \param state Pointer to the app layer state data.
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* \param s Pointer to the Signature instance.
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* \param m Pointer to the SigMatch.
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*
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* \retval 1 On Match.
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* \retval 0 On no match.
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*/
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static int DetectDceIfaceMatch(DetectEngineThreadCtx *det_ctx,
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Flow *f, uint8_t flags, void *state, void *txv,
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const Signature *s, const SigMatchCtx *m)
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{
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SCEnter();
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int ret = 0;
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const DetectDceIfaceData *dce_data = (DetectDceIfaceData *)m;
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DCERPCUuidEntry *item = NULL;
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const DCERPCState *dcerpc_state = state;
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if (dcerpc_state == NULL) {
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SCLogDebug("No DCERPCState for the flow");
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SCReturnInt(0);
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}
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/* we still haven't seen a request */
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if (!dcerpc_state->dcerpc.dcerpcrequest.first_request_seen)
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goto end;
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if (!(dcerpc_state->dcerpc.dcerpchdr.type == REQUEST ||
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dcerpc_state->dcerpc.dcerpchdr.type == RESPONSE))
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goto end;
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TAILQ_FOREACH(item, &dcerpc_state->dcerpc.dcerpcbindbindack.accepted_uuid_list, next) {
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SCLogDebug("item %p", item);
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ret = 1;
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/* if any_frag is not enabled, we need to match only against the first
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* fragment */
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if (!dce_data->any_frag && !(item->flags & DCERPC_UUID_ENTRY_FLAG_FF))
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continue;
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/* if the uuid has been rejected(item->result == 1), we skip to the
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* next uuid */
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if (item->result != 0)
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continue;
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/* check the interface uuid */
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for (int i = 0; i < 16; i++) {
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if (dce_data->uuid[i] != item->uuid[i]) {
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ret = 0;
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break;
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}
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}
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ret &= (item->ctxid == dcerpc_state->dcerpc.dcerpcrequest.ctxid);
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if (ret == 0)
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continue;
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/* check the interface version */
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if (dce_data->op != DETECT_DCE_IFACE_OP_NONE &&
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!DetectDceIfaceMatchIfaceVersion(item->version, dce_data)) {
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ret &= 0;
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}
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/* we have a match. Time to leave with a match */
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if (ret == 1)
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goto end;
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}
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end:
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SCReturnInt(ret);
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}
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static int DetectDceIfaceMatchRust(DetectEngineThreadCtx *det_ctx,
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Flow *f, uint8_t flags, void *state, void *txv,
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const Signature *s, const SigMatchCtx *m)
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{
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SCEnter();
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if (f->alproto == ALPROTO_DCERPC) {
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return DetectDceIfaceMatch(det_ctx, f, flags,
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state, txv, s, m);
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}
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int ret = 0;
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DetectDceIfaceData *dce_data = (DetectDceIfaceData *)m;
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if (rs_smb_tx_get_dce_iface(f->alstate, txv, dce_data->uuid, 16, dce_data->op, dce_data->version) != 1) {
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SCLogDebug("rs_smb_tx_get_dce_iface: didn't match");
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} else {
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SCLogDebug("rs_smb_tx_get_dce_iface: matched!");
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ret = 1;
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// TODO validate frag
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}
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SCReturnInt(ret);
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}
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/**
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* \brief Creates a SigMatch for the "dce_iface" keyword being sent as argument,
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* and appends it to the Signature(s).
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*
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* \param de_ctx Pointer to the detection engine context.
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* \param s Pointer to signature for the current Signature being parsed
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* from the rules.
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* \param arg Pointer to the string holding the keyword value.
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*
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* \retval 0 on success, -1 on failure.
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*/
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static int DetectDceIfaceSetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg)
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{
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DetectDceIfaceData *did = DetectDceIfaceArgParse(arg);
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if (did == NULL) {
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SCLogError(SC_ERR_INVALID_SIGNATURE, "Error parsing dce_iface option in "
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"signature");
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return -1;
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}
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SigMatch *sm = SigMatchAlloc();
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if (sm == NULL) {
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DetectDceIfaceFree(did);
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return -1;
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}
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sm->type = DETECT_DCE_IFACE;
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sm->ctx = (void *)did;
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SigMatchAppendSMToList(s, sm, g_dce_generic_list_id);
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return 0;
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}
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static void DetectDceIfaceFree(void *ptr)
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{
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SCFree(ptr);
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return;
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}
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|
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/************************************Unittests*********************************/
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|
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#ifdef UNITTESTS
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static int DetectDceIfaceTestParse01(void)
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{
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SCEnter();
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Signature *s = SigAlloc();
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if (s == NULL)
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return 0;
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int result = 0;
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DetectDceIfaceData *did = NULL;
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uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
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0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
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SigMatch *temp = NULL;
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int i = 0;
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result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC") == 0);
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|
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if (s->sm_lists[g_dce_generic_list_id] == NULL) {
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SCReturnInt(0);
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}
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temp = s->sm_lists[g_dce_generic_list_id];
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did = (DetectDceIfaceData *)temp->ctx;
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if (did == NULL) {
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SCReturnInt(0);
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}
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result &= 1;
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for (i = 0; i < 16; i++) {
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if (did->uuid[i] != test_uuid[i]) {
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result = 0;
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break;
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}
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}
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|
|
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result &= (did->version == 0);
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result &= (did->op == 0);
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result &= (did->any_frag == 0);
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|
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SigFree(s);
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SCReturnInt(result);
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}
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|
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static int DetectDceIfaceTestParse02(void)
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{
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SCEnter();
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|
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Signature *s = SigAlloc();
|
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if (s == NULL)
|
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return 0;
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|
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int result = 0;
|
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DetectDceIfaceData *did = NULL;
|
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uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
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0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
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SigMatch *temp = NULL;
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int i = 0;
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|
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result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,>1") == 0);
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|
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if (s->sm_lists[g_dce_generic_list_id] == NULL) {
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SCReturnInt(0);
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}
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|
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temp = s->sm_lists[g_dce_generic_list_id];
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did = (DetectDceIfaceData *)temp->ctx;
|
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if (did == NULL) {
|
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SCReturnInt(0);
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}
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|
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result &= 1;
|
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for (i = 0; i < 16; i++) {
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if (did->uuid[i] != test_uuid[i]) {
|
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result = 0;
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break;
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}
|
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}
|
|
|
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result &= (did->version == 1);
|
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result &= (did->op == DETECT_DCE_IFACE_OP_GT);
|
|
result &= (did->any_frag == 0);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse03(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,<10") == 0);
|
|
|
|
if (s->sm_lists[g_dce_generic_list_id] == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 10);
|
|
result &= (did->op == DETECT_DCE_IFACE_OP_LT);
|
|
result &= (did->any_frag == 0);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse04(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,!10") == 0);
|
|
|
|
if (s->sm_lists[g_dce_generic_list_id] == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
if (did == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 10);
|
|
result &= (did->op == DETECT_DCE_IFACE_OP_NE);
|
|
result &= (did->any_frag == 0);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse05(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,=10") == 0);
|
|
|
|
if (s->sm_lists[g_dce_generic_list_id] == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
if (did == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 10);
|
|
result &= (did->op == DETECT_DCE_IFACE_OP_EQ);
|
|
result &= (did->any_frag == 0);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse06(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,any_frag") == 0);
|
|
|
|
if (s->sm_lists[g_dce_generic_list_id] == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
if (did == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 0);
|
|
result &= (did->op == 0);
|
|
result &= (did->any_frag == 1);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse07(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,>1,any_frag") == 0);
|
|
|
|
if (s->sm_lists[g_dce_generic_list_id] == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
if (did == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 1);
|
|
result &= (did->op == DETECT_DCE_IFACE_OP_GT);
|
|
result &= (did->any_frag == 1);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse08(void)
|
|
{
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,<1,any_frag") == 0);
|
|
|
|
if (s->sm_lists[g_dce_generic_list_id] == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
if (did == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 1);
|
|
result &= (did->op == DETECT_DCE_IFACE_OP_LT);
|
|
result &= (did->any_frag == 1);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse09(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,=1,any_frag") == 0);
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
if (did == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 1);
|
|
result &= (did->op == DETECT_DCE_IFACE_OP_EQ);
|
|
result &= (did->any_frag == 1);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse10(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 0;
|
|
DetectDceIfaceData *did = NULL;
|
|
uint8_t test_uuid[] = {0x12, 0x34, 0x56, 0x78, 0x12, 0x34, 0x12, 0x34, 0x12, 0x34,
|
|
0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC};
|
|
SigMatch *temp = NULL;
|
|
int i = 0;
|
|
|
|
result = (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,!1,any_frag") == 0);
|
|
|
|
if (s->sm_lists[g_dce_generic_list_id] == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
temp = s->sm_lists[g_dce_generic_list_id];
|
|
did = (DetectDceIfaceData *)temp->ctx;
|
|
if (did == NULL) {
|
|
SCReturnInt(0);
|
|
}
|
|
|
|
result &= 1;
|
|
for (i = 0; i < 16; i++) {
|
|
if (did->uuid[i] != test_uuid[i]) {
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
result &= (did->version == 1);
|
|
result &= (did->op == DETECT_DCE_IFACE_OP_NE);
|
|
result &= (did->any_frag == 1);
|
|
|
|
SigFree(s);
|
|
SCReturnInt(result);
|
|
}
|
|
|
|
static int DetectDceIfaceTestParse11(void)
|
|
{
|
|
SCEnter();
|
|
|
|
Signature *s = SigAlloc();
|
|
if (s == NULL)
|
|
return 0;
|
|
|
|
int result = 1;
|
|
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,>1,ay_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-12345679ABC,>1,any_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-134-123456789ABC,>1,any_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-123-124-1234-123456789ABC,>1,any_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "1234568-1234-1234-1234-123456789ABC,>1,any_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,>65536,any_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,>=1,any_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,<0,any_frag") == -1);
|
|
result &= (DetectDceIfaceSetup(NULL, s, "12345678-1234-1234-1234-123456789ABC,>65535,any_frag") == -1);
|
|
|
|
SigFree(s);
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* \test Test a valid dce_iface entry for a bind and bind_ack
|
|
*/
|
|
static int DetectDceIfaceTestParse12(void)
|
|
{
|
|
Signature *s = NULL;
|
|
ThreadVars th_v;
|
|
Packet *p = NULL;
|
|
Flow f;
|
|
TcpSession ssn;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
DetectEngineCtx *de_ctx = NULL;
|
|
DCERPCState *dcerpc_state = NULL;
|
|
int r = 0;
|
|
|
|
uint8_t dcerpc_bind[] = {
|
|
0x05, 0x00, 0x0b, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x48, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x00, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
|
|
0x6a, 0x28, 0x19, 0x39, 0x0c, 0xb1, 0xd0, 0x11,
|
|
0x9b, 0xa8, 0x00, 0xc0, 0x4f, 0xd9, 0x2e, 0xf5,
|
|
0x00, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
|
|
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
|
|
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_bindack[] = {
|
|
0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x44, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x26, 0x3d, 0x00, 0x00,
|
|
0x0c, 0x00, 0x5c, 0x50, 0x49, 0x50, 0x45, 0x5c,
|
|
0x6c, 0x73, 0x61, 0x73, 0x73, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
|
|
0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
|
|
0x02, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
uint8_t dcerpc_request[] = {
|
|
0x05, 0x00, 0x00, 0x01, 0x10, 0x00, 0x00, 0x00,
|
|
0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
|
|
0xad, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
|
uint32_t dcerpc_request_len = sizeof(dcerpc_request);
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
memset(&f, 0, sizeof(f));
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
f.protoctx = (void *)&ssn;
|
|
f.proto = IPPROTO_TCP;
|
|
p->flow = &f;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
FAIL_IF(de_ctx == NULL);
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
s = DetectEngineAppendSig(de_ctx,"alert tcp any any -> any any "
|
|
"(msg:\"DCERPC\"; "
|
|
"dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5,=0,any_frag; "
|
|
"sid:1;)");
|
|
FAIL_IF(s == NULL);
|
|
|
|
SigGroupBuild(de_ctx);
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
SCLogDebug("handling to_server chunk");
|
|
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOSERVER | STREAM_START, dcerpc_bind,
|
|
dcerpc_bind_len);
|
|
FAIL_IF(r != 0);
|
|
|
|
dcerpc_state = f.alstate;
|
|
FAIL_IF(dcerpc_state == NULL);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
FAIL_IF(PacketAlertCheck(p, 1));
|
|
|
|
SCLogDebug("handling to_client chunk");
|
|
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOCLIENT, dcerpc_bindack,
|
|
dcerpc_bindack_len);
|
|
FAIL_IF(r != 0);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
FAIL_IF(PacketAlertCheck(p, 1));
|
|
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOCLIENT, dcerpc_request,
|
|
dcerpc_request_len);
|
|
FAIL_IF(r != 0);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
FAIL_IF(!PacketAlertCheck(p, 1));
|
|
if (alp_tctx != NULL)
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
StreamTcpFreeConfig(TRUE);
|
|
FLOW_DESTROY(&f);
|
|
UTHFreePackets(&p, 1);
|
|
PASS;
|
|
}
|
|
|
|
/* Disabled because of bug_753. Would be enabled, once we rewrite
|
|
* dce parser */
|
|
#if 0
|
|
|
|
/**
|
|
* \test Test a valid dce_iface entry with a bind, bind_ack and 3 request/responses.
|
|
*/
|
|
static int DetectDceIfaceTestParse13(void)
|
|
{
|
|
int result = 0;
|
|
Signature *s = NULL;
|
|
ThreadVars th_v;
|
|
Packet *p = NULL;
|
|
Flow f;
|
|
TcpSession ssn;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
DetectEngineCtx *de_ctx = NULL;
|
|
DCERPCState *dcerpc_state = NULL;
|
|
int r = 0;
|
|
|
|
uint8_t dcerpc_bind[] = {
|
|
0x05, 0x00, 0x0b, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x48, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x00, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
|
|
0x01, 0xd0, 0x8c, 0x33, 0x44, 0x22, 0xf1, 0x31,
|
|
0xaa, 0xaa, 0x90, 0x00, 0x38, 0x00, 0x10, 0x03,
|
|
0x01, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
|
|
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
|
|
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_bindack[] = {
|
|
0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x44, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x65, 0x8e, 0x00, 0x00,
|
|
0x0d, 0x00, 0x5c, 0x50, 0x49, 0x50, 0x45, 0x5c,
|
|
0x77, 0x69, 0x6e, 0x72, 0x65, 0x67, 0x00, 0x6d,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
|
|
0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
|
|
0x02, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_request1[] = {
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x24, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
|
|
0x2c, 0xfd, 0xb5, 0x00, 0x40, 0xaa, 0x01, 0x00,
|
|
0x00, 0x00, 0x00, 0x02,
|
|
};
|
|
|
|
uint8_t dcerpc_response1[] = {
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x30, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0xf6, 0x72, 0x28, 0x9c,
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
0x29, 0x87, 0xea, 0xe9, 0x00, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_request2[] = {
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0xa4, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
|
|
0x8c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0xf6, 0x72, 0x28, 0x9c,
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
0x29, 0x87, 0xea, 0xe9, 0x5c, 0x00, 0x5c, 0x00,
|
|
0xa8, 0xb9, 0x14, 0x00, 0x2e, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x2e, 0x00, 0x00, 0x00,
|
|
0x53, 0x00, 0x4f, 0x00, 0x46, 0x00, 0x54, 0x00,
|
|
0x57, 0x00, 0x41, 0x00, 0x52, 0x00, 0x45, 0x00,
|
|
0x5c, 0x00, 0x4d, 0x00, 0x69, 0x00, 0x63, 0x00,
|
|
0x72, 0x00, 0x6f, 0x00, 0x73, 0x00, 0x6f, 0x00,
|
|
0x66, 0x00, 0x74, 0x00, 0x5c, 0x00, 0x57, 0x00,
|
|
0x69, 0x00, 0x6e, 0x00, 0x64, 0x00, 0x6f, 0x00,
|
|
0x77, 0x00, 0x73, 0x00, 0x5c, 0x00, 0x43, 0x00,
|
|
0x75, 0x00, 0x72, 0x00, 0x72, 0x00, 0x65, 0x00,
|
|
0x6e, 0x00, 0x74, 0x00, 0x56, 0x00, 0x65, 0x00,
|
|
0x72, 0x00, 0x73, 0x00, 0x69, 0x00, 0x6f, 0x00,
|
|
0x6e, 0x00, 0x5c, 0x00, 0x52, 0x00, 0x75, 0x00,
|
|
0x6e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x03, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_response2[] = {
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x30, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
|
|
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x72, 0x28, 0x9c,
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
0x29, 0x87, 0xea, 0xe9, 0x00, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_request3[] = {
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x70, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0xf7, 0x72, 0x28, 0x9c,
|
|
0xf0, 0x57, 0xd8, 0x11, 0xb0, 0x05, 0x00, 0x0c,
|
|
0x29, 0x87, 0xea, 0xe9, 0x0c, 0x00, 0x0c, 0x00,
|
|
0x98, 0xda, 0x14, 0x00, 0x06, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
|
|
0x4f, 0x00, 0x73, 0x00, 0x61, 0x00, 0x33, 0x00,
|
|
0x32, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x18, 0x00, 0x00, 0x00, 0x4e, 0x00, 0x54, 0x00,
|
|
0x4f, 0x00, 0x53, 0x00, 0x41, 0x00, 0x33, 0x00,
|
|
0x32, 0x00, 0x2e, 0x00, 0x45, 0x00, 0x58, 0x00,
|
|
0x45, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_response3[] = {
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x1c, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
|
|
|
uint32_t dcerpc_request1_len = sizeof(dcerpc_request1);
|
|
uint32_t dcerpc_response1_len = sizeof(dcerpc_response1);
|
|
|
|
uint32_t dcerpc_request2_len = sizeof(dcerpc_request2);
|
|
uint32_t dcerpc_response2_len = sizeof(dcerpc_response2);
|
|
|
|
uint32_t dcerpc_request3_len = sizeof(dcerpc_request3);
|
|
uint32_t dcerpc_response3_len = sizeof(dcerpc_response3);
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
memset(&p, 0, sizeof(p));
|
|
memset(&f, 0, sizeof(f));
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
f.protoctx = (void *)&ssn;
|
|
f.proto = IPPROTO_TCP;
|
|
p->flow = &f;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
if (de_ctx == NULL)
|
|
goto end;
|
|
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
s = DetectEngineAppendSig(de_ctx,"alert tcp any any -> any any "
|
|
"(msg:\"DCERPC\"; dce_iface:338cd001-2244-31f1-aaaa-900038001003,=1,any_frag; sid:1;)");
|
|
if (s == NULL)
|
|
goto end;
|
|
|
|
SigGroupBuild(de_ctx);
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
SCLogDebug("chunk 1, bind");
|
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER | STREAM_START,
|
|
dcerpc_bind, dcerpc_bind_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
dcerpc_state = f.alstate;
|
|
if (dcerpc_state == NULL) {
|
|
SCLogDebug("no dcerpc state: ");
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 didn't match after bind request: ");
|
|
goto end;
|
|
}
|
|
|
|
SCLogDebug("chunk 2, bind_ack");
|
|
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_bindack,
|
|
dcerpc_bindack_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched again after bind ack: ");
|
|
goto end;
|
|
}
|
|
|
|
SCLogDebug("chunk 3, request 1");
|
|
|
|
/* request1 */
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request1,
|
|
dcerpc_request1_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (!(PacketAlertCheck(p, 1))) {
|
|
printf("sig 1 didn't match after request1: ");
|
|
goto end;
|
|
}
|
|
|
|
SCLogDebug("sending response1");
|
|
|
|
/* response1 */
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_response1,
|
|
dcerpc_response1_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched after response1, but shouldn't: ");
|
|
goto end;
|
|
}
|
|
|
|
SCLogDebug("sending request2");
|
|
|
|
/* request2 */
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request2,
|
|
dcerpc_request2_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (!(PacketAlertCheck(p, 1))) {
|
|
printf("sig 1 didn't match after request2: ");
|
|
goto end;
|
|
}
|
|
|
|
/* response2 */
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_response2,
|
|
dcerpc_response2_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched after response2, but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
/* request3 */
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request3,
|
|
dcerpc_request3_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOCLIENT;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (!(PacketAlertCheck(p, 1))) {
|
|
printf("sig 1 didn't match after request3: ");
|
|
goto end;
|
|
}
|
|
|
|
/* response3 */
|
|
r = AppLayerParserParse(alp_tctx, &f, ALPROTO_DCERPC, STREAM_TOCLIENT | STREAM_EOF,
|
|
dcerpc_response3, dcerpc_response3_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
goto end;
|
|
}
|
|
|
|
p->flowflags &=~ FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_TOCLIENT;
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched after response3, but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
|
|
end:
|
|
if (alp_tctx != NULL)
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
StreamTcpFreeConfig(TRUE);
|
|
UTHFreePackets(&p, 1);
|
|
return result;
|
|
}
|
|
|
|
#endif
|
|
|
|
/**
|
|
* \test Test a valid dce_iface entry for a bind and bind_ack
|
|
*/
|
|
static int DetectDceIfaceTestParse14(void)
|
|
{
|
|
int result = 0;
|
|
Signature *s = NULL;
|
|
ThreadVars th_v;
|
|
Packet *p = NULL;
|
|
Flow f;
|
|
TcpSession ssn;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
DetectEngineCtx *de_ctx = NULL;
|
|
DCERPCState *dcerpc_state = NULL;
|
|
int r = 0;
|
|
|
|
uint8_t dcerpc_bind[] = {
|
|
0x05, 0x00, 0x0b, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x48, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x00, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
|
|
0x6a, 0x28, 0x19, 0x39, 0x0c, 0xb1, 0xd0, 0x11,
|
|
0x9b, 0xa8, 0x00, 0xc0, 0x4f, 0xd9, 0x2e, 0xf5,
|
|
0x00, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
|
|
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
|
|
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint8_t dcerpc_bindack[] = {
|
|
0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x44, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x26, 0x3d, 0x00, 0x00,
|
|
0x0c, 0x00, 0x5c, 0x50, 0x49, 0x50, 0x45, 0x5c,
|
|
0x6c, 0x73, 0x61, 0x73, 0x73, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
|
|
0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
|
|
0x02, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
uint8_t dcerpc_request[] = {
|
|
0x05, 0x00, 0x00, 0x01, 0x10, 0x00, 0x00, 0x00,
|
|
0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
|
|
0xad, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
};
|
|
|
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
|
uint32_t dcerpc_request_len = sizeof(dcerpc_request);
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
memset(&p, 0, sizeof(p));
|
|
memset(&f, 0, sizeof(f));
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
f.protoctx = (void *)&ssn;
|
|
f.proto = IPPROTO_TCP;
|
|
p->flow = &f;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
if (de_ctx == NULL)
|
|
goto end;
|
|
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
|
|
"(msg:\"DCERPC\"; "
|
|
"dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5,=0; "
|
|
"sid:1;)");
|
|
if (s == NULL)
|
|
goto end;
|
|
|
|
SigGroupBuild(de_ctx);
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOSERVER | STREAM_START, dcerpc_bind,
|
|
dcerpc_bind_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
dcerpc_state = f.alstate;
|
|
if (dcerpc_state == NULL) {
|
|
SCLogDebug("no dcerpc state: ");
|
|
goto end;
|
|
}
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1))
|
|
goto end;
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOCLIENT, dcerpc_bindack,
|
|
dcerpc_bindack_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOCLIENT, dcerpc_request,
|
|
dcerpc_request_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (!PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
|
|
end:
|
|
if (alp_tctx != NULL)
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
StreamTcpFreeConfig(TRUE);
|
|
FLOW_DESTROY(&f);
|
|
UTHFreePackets(&p, 1);
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* \test Test a valid dce_iface entry for a bind and bind_ack
|
|
*/
|
|
static int DetectDceIfaceTestParse15(void)
|
|
{
|
|
int result = 0;
|
|
Signature *s = NULL;
|
|
ThreadVars th_v;
|
|
Packet *p = NULL;
|
|
Flow f;
|
|
TcpSession ssn;
|
|
DetectEngineThreadCtx *det_ctx = NULL;
|
|
DetectEngineCtx *de_ctx = NULL;
|
|
DCERPCState *dcerpc_state = NULL;
|
|
int r = 0;
|
|
|
|
uint8_t dcerpc_bind[] = {
|
|
0x05, 0x00, 0x0b, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x48, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xd0, 0x16, 0xd0, 0x16, 0x00, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
|
|
0x40, 0xfd, 0x2c, 0x34, 0x6c, 0x3c, 0xce, 0x11,
|
|
0xa8, 0x93, 0x08, 0x00, 0x2b, 0x2e, 0x9c, 0x6d,
|
|
0x00, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
|
|
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
|
|
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00
|
|
};
|
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
|
|
|
uint8_t dcerpc_bindack[] = {
|
|
0x05, 0x00, 0x0c, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x44, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x7d, 0xd8, 0x00, 0x00,
|
|
0x0d, 0x00, 0x5c, 0x70, 0x69, 0x70, 0x65, 0x5c,
|
|
0x6c, 0x6c, 0x73, 0x72, 0x70, 0x63, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x04, 0x5d, 0x88, 0x8a, 0xeb, 0x1c, 0xc9, 0x11,
|
|
0x9f, 0xe8, 0x08, 0x00, 0x2b, 0x10, 0x48, 0x60,
|
|
0x02, 0x00, 0x00, 0x00
|
|
};
|
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
|
|
|
uint8_t dcerpc_alter_context[] = {
|
|
0x05, 0x00, 0x0e, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x48, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xd0, 0x16, 0xd0, 0x16, 0x00, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00,
|
|
0xd0, 0x4c, 0x67, 0x57, 0x00, 0x52, 0xce, 0x11,
|
|
0xa8, 0x97, 0x08, 0x00, 0x2b, 0x2e, 0x9c, 0x6d,
|
|
0x01, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
|
|
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
|
|
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00
|
|
};
|
|
uint32_t dcerpc_alter_context_len = sizeof(dcerpc_alter_context);
|
|
|
|
uint8_t dcerpc_alter_context_resp[] = {
|
|
0x05, 0x00, 0x0f, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x38, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xb8, 0x10, 0xb8, 0x10, 0x7d, 0xd8, 0x00, 0x00,
|
|
0x00, 0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x04, 0x5d, 0x88, 0x8a,
|
|
0xeb, 0x1c, 0xc9, 0x11, 0x9f, 0xe8, 0x08, 0x00,
|
|
0x2b, 0x10, 0x48, 0x60, 0x02, 0x00, 0x00, 0x00
|
|
};
|
|
uint32_t dcerpc_alter_context_resp_len = sizeof(dcerpc_alter_context_resp);
|
|
|
|
uint8_t dcerpc_request1[] = {
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x20, 0x03, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xdd, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
};
|
|
uint32_t dcerpc_request1_len = sizeof(dcerpc_request1);
|
|
|
|
uint8_t dcerpc_response1[] = {
|
|
0x05, 0x00, 0x02, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x30, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x18, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0xf5, 0x66, 0xbf, 0x54,
|
|
0xc4, 0xdb, 0xdb, 0x4f, 0xa0, 0x01, 0x6d, 0xf4,
|
|
0xf6, 0xa8, 0x44, 0xb3, 0x00, 0x00, 0x00, 0x00
|
|
};
|
|
uint32_t dcerpc_response1_len = sizeof(dcerpc_response1);
|
|
|
|
uint8_t dcerpc_request2[] = {
|
|
0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
|
|
0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0xc6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x07, 0x9f, 0x13, 0xd9,
|
|
};
|
|
uint32_t dcerpc_request2_len = sizeof(dcerpc_request2);
|
|
|
|
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
|
|
|
|
memset(&th_v, 0, sizeof(th_v));
|
|
memset(&p, 0, sizeof(p));
|
|
memset(&f, 0, sizeof(f));
|
|
memset(&ssn, 0, sizeof(ssn));
|
|
|
|
p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
|
|
|
|
FLOW_INITIALIZE(&f);
|
|
f.protoctx = (void *)&ssn;
|
|
f.proto = IPPROTO_TCP;
|
|
p->flow = &f;
|
|
p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
|
|
p->flowflags |= FLOW_PKT_TOSERVER;
|
|
p->flowflags |= FLOW_PKT_ESTABLISHED;
|
|
f.alproto = ALPROTO_DCERPC;
|
|
|
|
StreamTcpInitConfig(TRUE);
|
|
|
|
de_ctx = DetectEngineCtxInit();
|
|
if (de_ctx == NULL)
|
|
goto end;
|
|
|
|
de_ctx->flags |= DE_QUIET;
|
|
|
|
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
|
|
"(msg:\"DCERPC\"; "
|
|
"dce_iface:57674cd0-5200-11ce-a897-08002b2e9c6d; "
|
|
"sid:1;)");
|
|
if (s == NULL)
|
|
goto end;
|
|
|
|
s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
|
|
"(msg:\"DCERPC\"; "
|
|
"dce_iface:342cfd40-3c6c-11ce-a893-08002b2e9c6d; "
|
|
"sid:2;)");
|
|
if (s == NULL)
|
|
goto end;
|
|
|
|
SigGroupBuild(de_ctx);
|
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOSERVER | STREAM_START, dcerpc_bind,
|
|
dcerpc_bind_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
dcerpc_state = f.alstate;
|
|
if (dcerpc_state == NULL) {
|
|
SCLogDebug("no dcerpc state: ");
|
|
goto end;
|
|
}
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1))
|
|
goto end;
|
|
if (PacketAlertCheck(p, 2))
|
|
goto end;
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOCLIENT, dcerpc_bindack,
|
|
dcerpc_bindack_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
if (PacketAlertCheck(p, 2)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOSERVER, dcerpc_alter_context,
|
|
dcerpc_alter_context_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
if (PacketAlertCheck(p, 2)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOCLIENT, dcerpc_alter_context_resp,
|
|
dcerpc_alter_context_resp_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
if (PacketAlertCheck(p, 2)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOSERVER, dcerpc_request1,
|
|
dcerpc_request1_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (!PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
if (PacketAlertCheck(p, 2)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOCLIENT, dcerpc_response1,
|
|
dcerpc_response1_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
if (PacketAlertCheck(p, 2)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
FLOWLOCK_WRLOCK(&f);
|
|
r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
|
|
STREAM_TOSERVER, dcerpc_request2,
|
|
dcerpc_request2_len);
|
|
if (r != 0) {
|
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
|
FLOWLOCK_UNLOCK(&f);
|
|
goto end;
|
|
}
|
|
FLOWLOCK_UNLOCK(&f);
|
|
|
|
/* do detect */
|
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
|
|
|
|
if (PacketAlertCheck(p, 1)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
if (!PacketAlertCheck(p, 2)) {
|
|
printf("sig 1 matched but shouldn't have: ");
|
|
goto end;
|
|
}
|
|
|
|
result = 1;
|
|
|
|
end:
|
|
if (alp_tctx != NULL)
|
|
AppLayerParserThreadCtxFree(alp_tctx);
|
|
SigGroupCleanup(de_ctx);
|
|
SigCleanSignatures(de_ctx);
|
|
|
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
|
DetectEngineCtxFree(de_ctx);
|
|
|
|
StreamTcpFreeConfig(TRUE);
|
|
FLOW_DESTROY(&f);
|
|
UTHFreePackets(&p, 1);
|
|
return result;
|
|
}
|
|
|
|
#endif
|
|
|
|
static void DetectDceIfaceRegisterTests(void)
|
|
{
|
|
#ifdef UNITTESTS
|
|
UtRegisterTest("DetectDceIfaceTestParse01", DetectDceIfaceTestParse01);
|
|
UtRegisterTest("DetectDceIfaceTestParse02", DetectDceIfaceTestParse02);
|
|
UtRegisterTest("DetectDceIfaceTestParse03", DetectDceIfaceTestParse03);
|
|
UtRegisterTest("DetectDceIfaceTestParse04", DetectDceIfaceTestParse04);
|
|
UtRegisterTest("DetectDceIfaceTestParse05", DetectDceIfaceTestParse05);
|
|
UtRegisterTest("DetectDceIfaceTestParse06", DetectDceIfaceTestParse06);
|
|
UtRegisterTest("DetectDceIfaceTestParse07", DetectDceIfaceTestParse07);
|
|
UtRegisterTest("DetectDceIfaceTestParse08", DetectDceIfaceTestParse08);
|
|
UtRegisterTest("DetectDceIfaceTestParse09", DetectDceIfaceTestParse09);
|
|
UtRegisterTest("DetectDceIfaceTestParse10", DetectDceIfaceTestParse10);
|
|
UtRegisterTest("DetectDceIfaceTestParse11", DetectDceIfaceTestParse11);
|
|
UtRegisterTest("DetectDceIfaceTestParse12", DetectDceIfaceTestParse12);
|
|
/* Disabled because of bug_753. Would be enabled, once we rewrite
|
|
* dce parser */
|
|
#if 0
|
|
UtRegisterTest("DetectDceIfaceTestParse13", DetectDceIfaceTestParse13, 1);
|
|
#endif
|
|
UtRegisterTest("DetectDceIfaceTestParse14", DetectDceIfaceTestParse14);
|
|
UtRegisterTest("DetectDceIfaceTestParse15", DetectDceIfaceTestParse15);
|
|
#endif
|
|
}
|