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-rw-r--r--src/detect-dce-stub-data.c1865
1 files changed, 1865 insertions, 0 deletions
diff --git a/src/detect-dce-stub-data.c b/src/detect-dce-stub-data.c
new file mode 100644
index 0000000..50d0387
--- /dev/null
+++ b/src/detect-dce-stub-data.c
@@ -0,0 +1,1865 @@
+/* Copyright (C) 2007-2018 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * \file
+ *
+ * \author Anoop Saldanha <anoopsaldanha@gmail.com>
+ * \author Victor Julien <victor@inliniac.net>
+ *
+ * Implements dce_stub_data keyword
+ */
+
+#include "suricata-common.h"
+
+#include "detect.h"
+#include "detect-parse.h"
+
+#include "detect-engine.h"
+#include "detect-engine-build.h"
+#include "detect-engine-mpm.h"
+#include "detect-engine-state.h"
+#include "detect-engine-prefilter.h"
+#include "detect-engine-content-inspection.h"
+
+#include "flow.h"
+#include "flow-var.h"
+#include "flow-util.h"
+
+#include "app-layer.h"
+#include "app-layer-parser.h"
+#include "queue.h"
+#include "stream-tcp-reassemble.h"
+
+#include "detect-dce-stub-data.h"
+#include "detect-dce-iface.h"
+
+#include "util-debug.h"
+
+#include "util-unittest.h"
+#include "util-unittest-helper.h"
+
+#include "stream-tcp.h"
+
+#include "rust.h"
+
+#define BUFFER_NAME "dce_stub_data"
+#define KEYWORD_NAME "dce_stub_data"
+
+static int DetectDceStubDataSetup(DetectEngineCtx *, Signature *, const char *);
+#ifdef UNITTESTS
+static void DetectDceStubDataRegisterTests(void);
+#endif
+static int g_dce_stub_data_buffer_id = 0;
+
+static InspectionBuffer *GetSMBData(DetectEngineThreadCtx *det_ctx,
+ const DetectEngineTransforms *transforms,
+ Flow *_f, const uint8_t flow_flags,
+ void *txv, const int list_id)
+{
+ InspectionBuffer *buffer = InspectionBufferGet(det_ctx, list_id);
+ if (!buffer->initialized) {
+ uint32_t data_len = 0;
+ const uint8_t *data = NULL;
+ uint8_t dir = flow_flags & (STREAM_TOSERVER|STREAM_TOCLIENT);
+ if (rs_smb_tx_get_stub_data(txv, dir, &data, &data_len) != 1)
+ return NULL;
+ SCLogDebug("have data!");
+
+ InspectionBufferSetup(det_ctx, list_id, buffer, data, data_len);
+ InspectionBufferApplyTransforms(buffer, transforms);
+ }
+ return buffer;
+}
+
+static InspectionBuffer *GetDCEData(DetectEngineThreadCtx *det_ctx,
+ const DetectEngineTransforms *transforms,
+ Flow *_f, const uint8_t flow_flags,
+ void *txv, const int list_id)
+{
+ InspectionBuffer *buffer = InspectionBufferGet(det_ctx, list_id);
+ if (!buffer->initialized) {
+ uint32_t data_len = 0;
+ const uint8_t *data = NULL;
+ uint8_t endianness;
+
+ rs_dcerpc_get_stub_data(txv, &data, &data_len, &endianness, flow_flags);
+ if (data == NULL || data_len == 0)
+ return NULL;
+
+ if (endianness > 0) {
+ buffer->flags = DETECT_CI_FLAGS_DCE_LE;
+ } else {
+ buffer->flags |= DETECT_CI_FLAGS_DCE_BE;
+ }
+ InspectionBufferSetup(det_ctx, list_id, buffer, data, data_len);
+ InspectionBufferApplyTransforms(buffer, transforms);
+ }
+ return buffer;
+}
+
+/**
+ * \brief Registers the keyword handlers for the "dce_stub_data" keyword.
+ */
+void DetectDceStubDataRegister(void)
+{
+ sigmatch_table[DETECT_DCE_STUB_DATA].name = "dcerpc.stub_data";
+ sigmatch_table[DETECT_DCE_STUB_DATA].alias = "dce_stub_data";
+ sigmatch_table[DETECT_DCE_STUB_DATA].Setup = DetectDceStubDataSetup;
+#ifdef UNITTESTS
+ sigmatch_table[DETECT_DCE_STUB_DATA].RegisterTests = DetectDceStubDataRegisterTests;
+#endif
+ sigmatch_table[DETECT_DCE_STUB_DATA].flags |= SIGMATCH_NOOPT|SIGMATCH_INFO_STICKY_BUFFER;
+
+ DetectAppLayerInspectEngineRegister2(BUFFER_NAME,
+ ALPROTO_SMB, SIG_FLAG_TOSERVER, 0,
+ DetectEngineInspectBufferGeneric,
+ GetSMBData);
+ DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOSERVER, 2,
+ PrefilterGenericMpmRegister, GetSMBData,
+ ALPROTO_SMB, 0);
+ DetectAppLayerInspectEngineRegister2(BUFFER_NAME,
+ ALPROTO_SMB, SIG_FLAG_TOCLIENT, 0,
+ DetectEngineInspectBufferGeneric,
+ GetSMBData);
+ DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOCLIENT, 2,
+ PrefilterGenericMpmRegister, GetSMBData,
+ ALPROTO_SMB, 0);
+
+ DetectAppLayerInspectEngineRegister2(BUFFER_NAME,
+ ALPROTO_DCERPC, SIG_FLAG_TOSERVER, 0,
+ DetectEngineInspectBufferGeneric,
+ GetDCEData);
+ DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOSERVER, 2,
+ PrefilterGenericMpmRegister, GetDCEData,
+ ALPROTO_DCERPC, 0);
+ DetectAppLayerInspectEngineRegister2(BUFFER_NAME,
+ ALPROTO_DCERPC, SIG_FLAG_TOCLIENT, 0,
+ DetectEngineInspectBufferGeneric,
+ GetDCEData);
+ DetectAppLayerMpmRegister2(BUFFER_NAME, SIG_FLAG_TOCLIENT, 2,
+ PrefilterGenericMpmRegister, GetDCEData,
+ ALPROTO_DCERPC, 0);
+
+ g_dce_stub_data_buffer_id = DetectBufferTypeGetByName(BUFFER_NAME);
+}
+
+/**
+ * \brief setups the dce_stub_data list
+ *
+ * \param de_ctx Pointer to the detection engine context
+ * \param s Pointer to signature for the current Signature being parsed
+ * from the rules
+ * \param arg Pointer to the string holding the keyword value
+ *
+ * \retval 0 on success, -1 on failure
+ */
+
+static int DetectDceStubDataSetup(DetectEngineCtx *de_ctx, Signature *s, const char *arg)
+{
+ if (DetectSignatureSetAppProto(s, ALPROTO_DCERPC) < 0)
+ return -1;
+ if (DetectBufferSetActiveList(de_ctx, s, g_dce_stub_data_buffer_id) < 0)
+ return -1;
+ return 0;
+}
+
+/************************************Unittests*********************************/
+
+#ifdef UNITTESTS
+#include "detect-engine-alert.h"
+
+/**
+ * \test Test a valid dce_stub_data entry with bind, bind_ack, request frags.
+ */
+static int DetectDceStubDataTestParse02(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
+ };
+
+ /* todo chop the request frag length and change the
+ * length related parameters in the frag */
+ uint8_t dcerpc_request[] = {
+ 0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
+ 0xec, 0x0c, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0xd4, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
+ 0xe1, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0xe1, 0x03, 0x00, 0x00, 0x83, 0xc7, 0x0b, 0x47,
+ 0x47, 0x47, 0x47, 0x81, 0x37, 0x22, 0xa5, 0x9b,
+ 0x4a, 0x75, 0xf4, 0xa3, 0x61, 0xd3, 0xbe, 0xdd,
+ 0x5a, 0xfb, 0x20, 0x1e, 0xfc, 0x10, 0x8e, 0x0f,
+ 0xa5, 0x9f, 0x4a, 0x22, 0x20, 0x9b, 0xa8, 0xd5,
+ 0xc4, 0xff, 0xc1, 0x3f, 0xbd, 0x9b, 0x4a, 0x22,
+ 0x2e, 0xc0, 0x7a, 0xa9, 0xfe, 0x97, 0xc9, 0xe1,
+ 0xa9, 0xf3, 0x2f, 0x22, 0xc9, 0x9b, 0x22, 0x50,
+ 0xa5, 0xf5, 0x4a, 0x4a, 0xce, 0x9b, 0x2f, 0x22,
+ 0x2e, 0x6f, 0xc1, 0xe1, 0xf3, 0xa8, 0x83, 0xa2,
+ 0x64, 0x98, 0xc1, 0x62, 0xa1, 0xa0, 0x89, 0x56,
+ 0xa8, 0x1b, 0x8b, 0x2b, 0x2e, 0xe3, 0x7a, 0xd1,
+ 0x03, 0xef, 0x58, 0x7c, 0x4e, 0x7d, 0x14, 0x76,
+ 0xfa, 0xc3, 0x7f, 0x02, 0xa5, 0xbb, 0x4a, 0x89,
+ 0x47, 0x6c, 0x12, 0xc9, 0x70, 0x18, 0x8e, 0x3a,
+ 0x2e, 0xcb, 0x52, 0xa9, 0x67, 0x98, 0x0a, 0x1e,
+ 0x2e, 0xc3, 0x32, 0x21, 0x7f, 0x10, 0x31, 0x3e,
+ 0xa6, 0x61, 0xc1, 0x61, 0x85, 0x98, 0x88, 0xa9,
+ 0xee, 0x83, 0x22, 0x51, 0xd6, 0xda, 0x4a, 0x4a,
+ 0xc1, 0xff, 0x38, 0x47, 0xcd, 0xe9, 0x25, 0x41,
+ 0xe4, 0xf3, 0x0d, 0x47, 0xd1, 0xcb, 0xc1, 0xd6,
+ 0x1e, 0x95, 0x4a, 0x22, 0xa5, 0x73, 0x08, 0x22,
+ 0xa5, 0x9b, 0xc9, 0xe6, 0xb5, 0xcd, 0x22, 0x43,
+ 0xd7, 0xe2, 0x0b, 0x4a, 0xe9, 0xf2, 0x28, 0x50,
+ 0xcd, 0xd7, 0x25, 0x43, 0xc1, 0x10, 0xbe, 0x99,
+ 0xa9, 0x9b, 0x4a, 0x22, 0x4d, 0xb8, 0x4a, 0x22,
+ 0xa5, 0x18, 0x8e, 0x2e, 0xf3, 0xc9, 0x22, 0x4e,
+ 0xc9, 0x9b, 0x4a, 0x4a, 0x96, 0xa9, 0x64, 0x46,
+ 0xcd, 0xec, 0x39, 0x10, 0xfa, 0xcf, 0xb5, 0x76,
+ 0x81, 0x8f, 0xc9, 0xe6, 0xa9, 0x10, 0x82, 0x7c,
+ 0xff, 0xc4, 0xa1, 0x0a, 0xf5, 0xcc, 0x1b, 0x74,
+ 0xf4, 0x10, 0x81, 0xa9, 0x9d, 0x98, 0xb0, 0xa1,
+ 0x65, 0x9f, 0xb9, 0x84, 0xd1, 0x9f, 0x13, 0x7c,
+ 0x47, 0x76, 0x12, 0x7c, 0xfc, 0x10, 0xbb, 0x09,
+ 0x55, 0x5a, 0xac, 0x20, 0xfa, 0x10, 0x7e, 0x15,
+ 0xa6, 0x69, 0x12, 0xe1, 0xf7, 0xca, 0x22, 0x57,
+ 0xd5, 0x9b, 0x4a, 0x4a, 0xd1, 0xfa, 0x38, 0x56,
+ 0xcd, 0xcc, 0x19, 0x63, 0xf6, 0xf3, 0x2f, 0x56,
+ 0xa5, 0x9b, 0x22, 0x51, 0xca, 0xf8, 0x21, 0x48,
+ 0xa5, 0xf3, 0x28, 0x4b, 0xcb, 0xff, 0x22, 0x47,
+ 0xcb, 0x9b, 0x4a, 0x4a, 0xc9, 0xf2, 0x39, 0x56,
+ 0xcd, 0xeb, 0x3e, 0x22, 0xa5, 0xf3, 0x2b, 0x41,
+ 0xc6, 0xfe, 0xc1, 0xfe, 0xf6, 0xca, 0xc9, 0xe1,
+ 0xad, 0xc8, 0x1b, 0xa1, 0x66, 0x93, 0x19, 0x73,
+ 0x26, 0x58, 0x42, 0x71, 0xf4, 0x18, 0x89, 0x2a,
+ 0xf6, 0xca, 0xb5, 0xf5, 0x2c, 0xd8, 0x42, 0xdd,
+ 0x72, 0x12, 0x09, 0x26, 0x5a, 0x4c, 0xc3, 0x21,
+ 0x5a, 0x4c, 0xc3, 0x61, 0x59, 0x64, 0x9d, 0xab,
+ 0xe6, 0x63, 0xc9, 0xc9, 0xad, 0x10, 0xa9, 0xa3,
+ 0x49, 0x0b, 0x4b, 0x22, 0xa5, 0xcf, 0x22, 0x23,
+ 0xa4, 0x9b, 0x4a, 0xdd, 0x31, 0xbf, 0xe2, 0x23,
+ 0xa5, 0x9b, 0xcb, 0xe6, 0x35, 0x9a, 0x4a, 0x22,
+ 0xcf, 0x9d, 0x20, 0x23, 0xcf, 0x99, 0xb5, 0x76,
+ 0x81, 0x83, 0x20, 0x22, 0xcf, 0x9b, 0x20, 0x22,
+ 0xcd, 0x99, 0x4a, 0xe6, 0x96, 0x10, 0x96, 0x71,
+ 0xf6, 0xcb, 0x20, 0x23, 0xf5, 0xf1, 0x5a, 0x71,
+ 0xf5, 0x64, 0x1e, 0x06, 0x9d, 0x64, 0x1e, 0x06,
+ 0x8d, 0x5c, 0x49, 0x32, 0xa5, 0x9b, 0x4a, 0xdd,
+ 0xf1, 0xbf, 0x56, 0xa1, 0x61, 0xbf, 0x13, 0x78,
+ 0xf4, 0xc9, 0x1a, 0x11, 0x77, 0xc9, 0x22, 0x51,
+ 0xc0, 0xf5, 0x2e, 0xa9, 0x61, 0xc9, 0x22, 0x50,
+ 0xc0, 0xf8, 0x3c, 0xa9, 0x71, 0xc9, 0x1b, 0x72,
+ 0xf4, 0x64, 0x9d, 0xb1, 0x5a, 0x4c, 0xdf, 0xa1,
+ 0x61, 0x8b, 0x12, 0x78, 0xfc, 0xc8, 0x1f, 0x72,
+ 0x2e, 0x77, 0x1a, 0x42, 0xcf, 0x9f, 0x10, 0x72,
+ 0x2e, 0x47, 0xa2, 0x63, 0xa5, 0x9b, 0x4a, 0x48,
+ 0xa5, 0xf3, 0x26, 0x4e, 0xca, 0xf8, 0x22, 0x57,
+ 0xc4, 0xf7, 0x0b, 0x4a, 0xf3, 0xf2, 0x38, 0x56,
+ 0xf1, 0xcd, 0xb5, 0xf5, 0x26, 0x5f, 0x5a, 0x78,
+ 0xf7, 0xf1, 0x0a, 0x4a, 0xa5, 0x8b, 0x4a, 0x22,
+ 0xf7, 0xf1, 0x4a, 0xdd, 0x75, 0x12, 0x0e, 0x06,
+ 0x81, 0xc1, 0xd9, 0xca, 0xb5, 0x9b, 0x4a, 0x22,
+ 0xc4, 0xc0, 0xb5, 0xc1, 0xc5, 0xa8, 0x8a, 0x92,
+ 0xa1, 0x73, 0x5c, 0x22, 0xa5, 0x9b, 0x2b, 0xe1,
+ 0xc5, 0xc9, 0x19, 0x11, 0x65, 0x73, 0x40, 0x22,
+ 0xa5, 0x9b, 0x11, 0x78, 0xa6, 0x43, 0x61, 0xf2,
+ 0xd0, 0x74, 0x2b, 0xe1, 0x96, 0x52, 0x1b, 0x70,
+ 0xf6, 0x64, 0x3f, 0x22, 0x5a, 0xcf, 0x4f, 0x26,
+ 0x20, 0x5b, 0x34, 0x23, 0x66, 0x64, 0x1f, 0xd2,
+ 0xa5, 0x9b, 0x4a, 0x22, 0xa5, 0x9b, 0x4a, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x01, 0x02, 0x03, 0x04
+ };
+
+ 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();
+ if (de_ctx == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,
+ "alert tcp any any -> any any "
+ "(msg:\"DCERPC\"; "
+ "dce_stub_data; content:\"|42 42 42 42|\";"
+ "sid:1;)");
+ if (s == NULL)
+ goto end;
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ 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);
+ 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);
+
+ /* we shouldn't have any stub data */
+ if (PacketAlertCheck(p, 1))
+ goto end;
+
+ /* do detect */
+ 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);
+ goto end;
+ }
+
+ p->flowflags &=~ FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_TOCLIENT;
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ /* we shouldn't have any stub data */
+ if (PacketAlertCheck(p, 1))
+ goto end;
+
+ r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
+ STREAM_TOSERVER | STREAM_EOF, dcerpc_request,
+ dcerpc_request_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);
+
+ /* we should have the stub data since we previously parsed a request frag */
+ if (!PacketAlertCheck(p, 1))
+ 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_stub_data with just a request frag.
+ */
+static int DetectDceStubDataTestParse03(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;
+
+ /* todo chop the request frag length and change the
+ * length related parameters in the frag */
+ uint8_t dcerpc_request[] = {
+ 0x05, 0x00, 0x00, 0x03, 0x10, 0x00, 0x00, 0x00,
+ 0xec, 0x0c, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0xd4, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x09, 0x00,
+ 0xe1, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0xe1, 0x03, 0x00, 0x00, 0x83, 0xc7, 0x0b, 0x47,
+ 0x47, 0x47, 0x47, 0x81, 0x37, 0x22, 0xa5, 0x9b,
+ 0x4a, 0x75, 0xf4, 0xa3, 0x61, 0xd3, 0xbe, 0xdd,
+ 0x5a, 0xfb, 0x20, 0x1e, 0xfc, 0x10, 0x8e, 0x0f,
+ 0xa5, 0x9f, 0x4a, 0x22, 0x20, 0x9b, 0xa8, 0xd5,
+ 0xc4, 0xff, 0xc1, 0x3f, 0xbd, 0x9b, 0x4a, 0x22,
+ 0x2e, 0xc0, 0x7a, 0xa9, 0xfe, 0x97, 0xc9, 0xe1,
+ 0xa9, 0xf3, 0x2f, 0x22, 0xc9, 0x9b, 0x22, 0x50,
+ 0xa5, 0xf5, 0x4a, 0x4a, 0xce, 0x9b, 0x2f, 0x22,
+ 0x2e, 0x6f, 0xc1, 0xe1, 0xf3, 0xa8, 0x83, 0xa2,
+ 0x64, 0x98, 0xc1, 0x62, 0xa1, 0xa0, 0x89, 0x56,
+ 0xa8, 0x1b, 0x8b, 0x2b, 0x2e, 0xe3, 0x7a, 0xd1,
+ 0x03, 0xef, 0x58, 0x7c, 0x4e, 0x7d, 0x14, 0x76,
+ 0xfa, 0xc3, 0x7f, 0x02, 0xa5, 0xbb, 0x4a, 0x89,
+ 0x47, 0x6c, 0x12, 0xc9, 0x70, 0x18, 0x8e, 0x3a,
+ 0x2e, 0xcb, 0x52, 0xa9, 0x67, 0x98, 0x0a, 0x1e,
+ 0x2e, 0xc3, 0x32, 0x21, 0x7f, 0x10, 0x31, 0x3e,
+ 0xa6, 0x61, 0xc1, 0x61, 0x85, 0x98, 0x88, 0xa9,
+ 0xee, 0x83, 0x22, 0x51, 0xd6, 0xda, 0x4a, 0x4a,
+ 0xc1, 0xff, 0x38, 0x47, 0xcd, 0xe9, 0x25, 0x41,
+ 0xe4, 0xf3, 0x0d, 0x47, 0xd1, 0xcb, 0xc1, 0xd6,
+ 0x1e, 0x95, 0x4a, 0x22, 0xa5, 0x73, 0x08, 0x22,
+ 0xa5, 0x9b, 0xc9, 0xe6, 0xb5, 0xcd, 0x22, 0x43,
+ 0xd7, 0xe2, 0x0b, 0x4a, 0xe9, 0xf2, 0x28, 0x50,
+ 0xcd, 0xd7, 0x25, 0x43, 0xc1, 0x10, 0xbe, 0x99,
+ 0xa9, 0x9b, 0x4a, 0x22, 0x4d, 0xb8, 0x4a, 0x22,
+ 0xa5, 0x18, 0x8e, 0x2e, 0xf3, 0xc9, 0x22, 0x4e,
+ 0xc9, 0x9b, 0x4a, 0x4a, 0x96, 0xa9, 0x64, 0x46,
+ 0xcd, 0xec, 0x39, 0x10, 0xfa, 0xcf, 0xb5, 0x76,
+ 0x81, 0x8f, 0xc9, 0xe6, 0xa9, 0x10, 0x82, 0x7c,
+ 0xff, 0xc4, 0xa1, 0x0a, 0xf5, 0xcc, 0x1b, 0x74,
+ 0xf4, 0x10, 0x81, 0xa9, 0x9d, 0x98, 0xb0, 0xa1,
+ 0x65, 0x9f, 0xb9, 0x84, 0xd1, 0x9f, 0x13, 0x7c,
+ 0x47, 0x76, 0x12, 0x7c, 0xfc, 0x10, 0xbb, 0x09,
+ 0x55, 0x5a, 0xac, 0x20, 0xfa, 0x10, 0x7e, 0x15,
+ 0xa6, 0x69, 0x12, 0xe1, 0xf7, 0xca, 0x22, 0x57,
+ 0xd5, 0x9b, 0x4a, 0x4a, 0xd1, 0xfa, 0x38, 0x56,
+ 0xcd, 0xcc, 0x19, 0x63, 0xf6, 0xf3, 0x2f, 0x56,
+ 0xa5, 0x9b, 0x22, 0x51, 0xca, 0xf8, 0x21, 0x48,
+ 0xa5, 0xf3, 0x28, 0x4b, 0xcb, 0xff, 0x22, 0x47,
+ 0xcb, 0x9b, 0x4a, 0x4a, 0xc9, 0xf2, 0x39, 0x56,
+ 0xcd, 0xeb, 0x3e, 0x22, 0xa5, 0xf3, 0x2b, 0x41,
+ 0xc6, 0xfe, 0xc1, 0xfe, 0xf6, 0xca, 0xc9, 0xe1,
+ 0xad, 0xc8, 0x1b, 0xa1, 0x66, 0x93, 0x19, 0x73,
+ 0x26, 0x58, 0x42, 0x71, 0xf4, 0x18, 0x89, 0x2a,
+ 0xf6, 0xca, 0xb5, 0xf5, 0x2c, 0xd8, 0x42, 0xdd,
+ 0x72, 0x12, 0x09, 0x26, 0x5a, 0x4c, 0xc3, 0x21,
+ 0x5a, 0x4c, 0xc3, 0x61, 0x59, 0x64, 0x9d, 0xab,
+ 0xe6, 0x63, 0xc9, 0xc9, 0xad, 0x10, 0xa9, 0xa3,
+ 0x49, 0x0b, 0x4b, 0x22, 0xa5, 0xcf, 0x22, 0x23,
+ 0xa4, 0x9b, 0x4a, 0xdd, 0x31, 0xbf, 0xe2, 0x23,
+ 0xa5, 0x9b, 0xcb, 0xe6, 0x35, 0x9a, 0x4a, 0x22,
+ 0xcf, 0x9d, 0x20, 0x23, 0xcf, 0x99, 0xb5, 0x76,
+ 0x81, 0x83, 0x20, 0x22, 0xcf, 0x9b, 0x20, 0x22,
+ 0xcd, 0x99, 0x4a, 0xe6, 0x96, 0x10, 0x96, 0x71,
+ 0xf6, 0xcb, 0x20, 0x23, 0xf5, 0xf1, 0x5a, 0x71,
+ 0xf5, 0x64, 0x1e, 0x06, 0x9d, 0x64, 0x1e, 0x06,
+ 0x8d, 0x5c, 0x49, 0x32, 0xa5, 0x9b, 0x4a, 0xdd,
+ 0xf1, 0xbf, 0x56, 0xa1, 0x61, 0xbf, 0x13, 0x78,
+ 0xf4, 0xc9, 0x1a, 0x11, 0x77, 0xc9, 0x22, 0x51,
+ 0xc0, 0xf5, 0x2e, 0xa9, 0x61, 0xc9, 0x22, 0x50,
+ 0xc0, 0xf8, 0x3c, 0xa9, 0x71, 0xc9, 0x1b, 0x72,
+ 0xf4, 0x64, 0x9d, 0xb1, 0x5a, 0x4c, 0xdf, 0xa1,
+ 0x61, 0x8b, 0x12, 0x78, 0xfc, 0xc8, 0x1f, 0x72,
+ 0x2e, 0x77, 0x1a, 0x42, 0xcf, 0x9f, 0x10, 0x72,
+ 0x2e, 0x47, 0xa2, 0x63, 0xa5, 0x9b, 0x4a, 0x48,
+ 0xa5, 0xf3, 0x26, 0x4e, 0xca, 0xf8, 0x22, 0x57,
+ 0xc4, 0xf7, 0x0b, 0x4a, 0xf3, 0xf2, 0x38, 0x56,
+ 0xf1, 0xcd, 0xb5, 0xf5, 0x26, 0x5f, 0x5a, 0x78,
+ 0xf7, 0xf1, 0x0a, 0x4a, 0xa5, 0x8b, 0x4a, 0x22,
+ 0xf7, 0xf1, 0x4a, 0xdd, 0x75, 0x12, 0x0e, 0x06,
+ 0x81, 0xc1, 0xd9, 0xca, 0xb5, 0x9b, 0x4a, 0x22,
+ 0xc4, 0xc0, 0xb5, 0xc1, 0xc5, 0xa8, 0x8a, 0x92,
+ 0xa1, 0x73, 0x5c, 0x22, 0xa5, 0x9b, 0x2b, 0xe1,
+ 0xc5, 0xc9, 0x19, 0x11, 0x65, 0x73, 0x40, 0x22,
+ 0xa5, 0x9b, 0x11, 0x78, 0xa6, 0x43, 0x61, 0xf2,
+ 0xd0, 0x74, 0x2b, 0xe1, 0x96, 0x52, 0x1b, 0x70,
+ 0xf6, 0x64, 0x3f, 0x22, 0x5a, 0xcf, 0x4f, 0x26,
+ 0x20, 0x5b, 0x34, 0x23, 0x66, 0x64, 0x1f, 0xd2,
+ 0xa5, 0x9b, 0x4a, 0x22, 0xa5, 0x9b, 0x4a, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
+ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
+ 0x01, 0x02, 0x03, 0x04
+ };
+
+ 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 = de_ctx->sig_list = SigInit(de_ctx,
+ "alert tcp any any -> any any "
+ "(msg:\"DCERPC\"; "
+ "dce_stub_data; content:\"|42 42 42 42|\";"
+ "sid:1;)");
+ FAIL_IF(s == NULL);
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
+ STREAM_TOSERVER | STREAM_START, dcerpc_request,
+ dcerpc_request_len);
+ FAIL_IF(r != 0);
+
+ dcerpc_state = f.alstate;
+ FAIL_IF (dcerpc_state == NULL);
+
+ p->flowflags &=~ FLOW_PKT_TOCLIENT;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ /* 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;
+}
+
+static int DetectDceStubDataTestParse04(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(&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_stub_data; content:\"|00 02|\"; sid:1;)");
+ if (s == NULL)
+ goto end;
+ s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"DCERPC\"; dce_stub_data; content:\"|00 75|\"; sid:2;)");
+ if (s == NULL)
+ goto end;
+ s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"DCERPC\"; dce_stub_data; content:\"|00 18|\"; sid:3;)");
+ if (s == NULL)
+ goto end;
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ 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);
+ goto end;
+ }
+ p->flowflags &=~ FLOW_PKT_TOCLIENT;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ dcerpc_state = f.alstate;
+ if (dcerpc_state == NULL) {
+ SCLogDebug("no dcerpc state: ");
+ goto end;
+ }
+
+ 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);
+ goto end;
+ }
+ p->flowflags &=~ FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_TOCLIENT;
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ /* request1 */
+ 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);
+ 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) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+
+ /* response1 */
+ 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);
+ 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) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+
+ /* request2 */
+ 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);
+ 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) || !PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+
+ /* response2 */
+ r = AppLayerParserParse(NULL, 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) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+ /* request3 */
+ r = AppLayerParserParse(NULL, 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) || PacketAlertCheck(p, 2) || !PacketAlertCheck(p, 3))
+ goto end;
+
+ /* response3 */
+ r = AppLayerParserParse(NULL, 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) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ 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;
+}
+
+static int DetectDceStubDataTestParse05(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_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_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(&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 = de_ctx->sig_list = SigInit(de_ctx,
+ "alert tcp any any -> any any "
+ "(msg:\"DCERPC\"; "
+ "dce_stub_data; content:\"|00 02|\"; "
+ "sid:1;)");
+ if (s == NULL)
+ goto end;
+ s = de_ctx->sig_list->next = SigInit(de_ctx,
+ "alert tcp any any -> any any "
+ "(msg:\"DCERPC\"; "
+ "dce_stub_data; content:\"|00 75|\"; "
+ "sid:2;)");
+ if (s == NULL)
+ goto end;
+ s = de_ctx->sig_list->next->next = SigInit(de_ctx,
+ "alert tcp any any -> any any "
+ "(msg:\"DCERPC\"; "
+ "dce_stub_data; content:\"|00 18|\"; "
+ "sid:3;)");
+ if (s == NULL)
+ goto end;
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ /* request1 */
+ r = AppLayerParserParse(NULL, alp_tctx, &f, ALPROTO_DCERPC,
+ STREAM_TOSERVER | STREAM_START, dcerpc_request1,
+ dcerpc_request1_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) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+
+ /* response1 */
+ 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);
+ 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) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+
+ /* request2 */
+ 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);
+ 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) || !PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+
+ /* response2 */
+ r = AppLayerParserParse(NULL, 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) || PacketAlertCheck(p, 2) || PacketAlertCheck(p, 3))
+ goto end;
+
+ /* request3 */
+ r = AppLayerParserParse(NULL, 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) || PacketAlertCheck(p, 2) || !PacketAlertCheck(p, 3))
+ goto end;
+
+ /* response3 */
+ r = AppLayerParserParse(NULL, 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))
+ 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;
+}
+
+// invalid signature because of invalid protocol
+static int DetectDceStubDataTestParse06(void)
+{
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ FAIL_IF_NULL(de_ctx);
+ de_ctx->flags = DE_QUIET;
+ Signature *s = DetectEngineAppendSig(de_ctx,
+ "alert dns any any -> any any dce_stub_data;content:\"0\";");
+ FAIL_IF_NOT_NULL(s);
+ DetectEngineCtxFree(de_ctx);
+ PASS;
+}
+
+static void DetectDceStubDataRegisterTests(void)
+{
+ UtRegisterTest("DetectDceStubDataTestParse02",
+ DetectDceStubDataTestParse02);
+ UtRegisterTest("DetectDceStubDataTestParse03",
+ DetectDceStubDataTestParse03);
+ UtRegisterTest("DetectDceStubDataTestParse04",
+ DetectDceStubDataTestParse04);
+ UtRegisterTest("DetectDceStubDataTestParse05",
+ DetectDceStubDataTestParse05);
+ UtRegisterTest("DetectDceStubDataTestParse06",
+ DetectDceStubDataTestParse06);
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-16 05:31:20 +0000