Bug #72 ยป 0001-fix-padding-calculation-and-stubdata-parser-for-dcer.patch
| src/app-layer-dcerpc.c | ||
|---|---|---|
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DCERPC_FIELD_MAX,
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};
|
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#if 0
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#ifdef UNITTESTS
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/* \brief hexdump function from libdnet, used for debugging only */
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void hexdump(const void *buf, size_t len) {
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/* dumps len bytes of *buf to stdout. Looks like:
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| ... | ... | |
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case 16:
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sstate->numctxitems = 0;
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if (input_len >= 8) {
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if (sstate->dcerpc.packed_drep[0] == 0x10) {
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sstate->opnum = *(p + 6);
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sstate->opnum |= *(p + 7) << 8;
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} else {
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sstate->opnum = *(p + 6) << 8;
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sstate->opnum |= *(p + 7);
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}
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if (sstate->dcerpc.type == REQUEST) {
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if (sstate->dcerpc.packed_drep[0] == 0x10) {
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sstate->opnum = *(p + 6);
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sstate->opnum |= *(p + 7) << 8;
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} else {
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sstate->opnum = *(p + 6) << 8;
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sstate->opnum |= *(p + 7);
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}
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}
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sstate->bytesprocessed += 8;
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SCReturnUInt(8U);
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} else {
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| ... | ... | |
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if (!(--input_len))
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break;
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case 22:
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sstate->opnum = *(p++);
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if (sstate->dcerpc.type == REQUEST) {
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sstate->opnum = *(p++);
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}
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if (!(--input_len))
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break;
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case 23:
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sstate->opnum |= *(p++) << 8;
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if (sstate->dcerpc.packed_drep[0] == 0x01) {
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SCByteSwap16(sstate->opnum);
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}
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if (sstate->dcerpc.type == REQUEST) {
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sstate->opnum |= *(p++) << 8;
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if (sstate->dcerpc.packed_drep[0] == 0x01) {
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SCByteSwap16(sstate->opnum);
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}
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}
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--input_len;
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break;
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}
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| ... | ... | |
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if (pstate == NULL)
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SCReturnInt(-1);
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while (sstate->bytesprocessed < DCERPC_HDR_LEN && input_len) {
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retval = DCERPCParseHeader(f, dcerpc_state, pstate, input, input_len,
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output);
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| ... | ... | |
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if (sstate->bytesprocessed == DCERPC_HDR_LEN + 10
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+ sstate->secondaryaddrlen) {
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sstate->pad = sstate->bytesprocessed % 4;
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sstate->padleft = sstate->pad;
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if (sstate->bytesprocessed % 4) {
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sstate->pad = (4 - sstate->bytesprocessed % 4);
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sstate->padleft = sstate->pad;
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}
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}
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while (sstate->bytesprocessed < DCERPC_HDR_LEN + 10
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| ... | ... | |
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}
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break;
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case REQUEST:
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case RESPONSE:
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while (sstate->bytesprocessed < DCERPC_HDR_LEN + 8
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&& sstate->bytesprocessed < sstate->dcerpc.frag_length
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&& input_len) {
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| ... | ... | |
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if (retval) {
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parsed += retval;
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input_len -= retval;
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sstate->padleft = sstate->dcerpc.frag_length - sstate->bytesprocessed;
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} else if (input_len) {
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SCLogDebug("Error parsing DCERPC Request");
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parsed -= input_len;
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input_len = 0;
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}
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}
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while (sstate->bytesprocessed >= DCERPC_HDR_LEN + 8
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&& sstate->bytesprocessed < sstate->dcerpc.frag_length
|
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&& input_len) {
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| ... | ... | |
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SCLogDebug("Error parsing DCERPC Stub Data");
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parsed -= input_len;
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input_len = 0;
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sstate->bytesprocessed = 0;
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}
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}
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SCLogDebug("REQUEST processed %u/%u\n", sstate->bytesprocessed,
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sstate->dcerpc.frag_length);
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SCLogDebug("REQUEST processed %u frag length %u opnum %u input_len %u\n", sstate->bytesprocessed,
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sstate->dcerpc.frag_length, sstate->opnum, input_len);
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if (sstate->bytesprocessed == sstate->dcerpc.frag_length) {
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sstate->bytesprocessed = 0;
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}
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break;
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default:
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SCLogDebug("DCERPC Type 0x%02x not implemented yet\n", sstate->dcerpc.type);
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sstate->bytesprocessed = 0;
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break;
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}
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pstate->parse_field = 0;
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pstate->flags |= APP_LAYER_PARSER_DONE;
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SCReturnInt(1);
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}
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| ... | ... | |
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*/
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/* set this to 1 to see problem */
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#define KNOWNFAILURE 0
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int DCERPCParserTest01(void) {
|
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int result = 1;
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Flow f;
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| ... | ... | |
|
0x02, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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#if KNOWNFAILURE
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uint8_t dcerpcrequest[] = {
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0x05, 0x00, 0x00, 0x00, 0x10,
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0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
|
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| ... | ... | |
|
0x00, 0x24, 0x00, 0x35, 0x00, 0x34, 0x00, 0x70,
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0x00, 0x69, 0x00};
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uint32_t requestlen = sizeof(dcerpcrequest);
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#endif
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uint32_t bindlen = sizeof(dcerpcbind);
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uint32_t bindacklen = sizeof(dcerpcbindack);
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| ... | ... | |
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TAILQ_FOREACH(uuid_entry, &dcerpc_state->uuid_list, next) {
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printUUID("BIND_ACK", uuid_entry);
|
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}
|
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#if KNOWNFAILURE
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printf("Sending dcerpcrequest (%u)", requestlen);
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hexdump(dcerpcrequest, requestlen);
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r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOSERVER|STREAM_EOF, dcerpcrequest, requestlen, FALSE);
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//hexdump(dcerpcrequest, requestlen);
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r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOSERVER|STREAM_EOF, dcerpcrequest, requestlen);
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if (r != 0) {
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printf("dcerpc header check returned %" PRId32 ", expected 0: ", r);
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result = 0;
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| ... | ... | |
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result = 0;
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goto end;
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}
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#endif
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end:
|
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return result;
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}
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| src/detect-dce-iface.c | ||
|---|---|---|
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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-dce-iface.h"
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#include "flow.h"
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#include "flow-var.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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| ... | ... | |
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int opts = 0;
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sigmatch_table[DETECT_DCE_IFACE].name = "dce_iface";
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sigmatch_table[DETECT_DCE_IFACE].alproto = ALPROTO_DCERPC;
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sigmatch_table[DETECT_DCE_IFACE].Match = NULL;
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sigmatch_table[DETECT_DCE_IFACE].AppLayerMatch = DetectDceIfaceMatch;
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sigmatch_table[DETECT_DCE_IFACE].Setup = DetectDceIfaceSetup;
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| ... | ... | |
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}
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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_get_substring(arg, ov, MAX_SUBSTRINGS, 1, &pcre_sub_str);
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if (res < 0) {
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SCLogError(SC_PCRE_GET_SUBSTRING_FAILED, "pcre_get_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(pcre_sub_str);
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j = 0;
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temp_str[2] = '\0';
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| ... | ... | |
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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_get_substring(arg, ov, MAX_SUBSTRINGS, 3, &pcre_sub_str);
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if (res < 0) {
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SCLogError(SC_PCRE_GET_SUBSTRING_FAILED, "pcre_get_substring failed");
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goto error;
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}
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version = atoi(pcre_sub_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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/* free the substring */
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pcre_free_substring(pcre_sub_str);
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/* now let us handle the operator supplied with the version number */
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res = pcre_get_substring(arg, ov, MAX_SUBSTRINGS, 2, &pcre_sub_str);
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if (res < 0) {
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SCLogError(SC_PCRE_GET_SUBSTRING_FAILED, "pcre_get_substring failed");
|
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| ... | ... | |
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switch (pcre_sub_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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|
did->op = DETECT_DCE_IFACE_OP_GT;
|
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|
break;
|
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|
case '=':
|
||
| ... | ... | |
|
break;
|
||
|
}
|
||
|
res = pcre_get_substring(arg, ov, MAX_SUBSTRINGS, 3, &pcre_sub_str);
|
||
|
if (res < 0) {
|
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SCLogError(SC_PCRE_GET_SUBSTRING_FAILED, "pcre_get_substring failed");
|
||
|
goto error;
|
||
|
}
|
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|
version = atoi(pcre_sub_str);
|
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|
if (version > 65535) {
|
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|
SCLogError(SC_ERR_INVALID_SIGNATURE, "DCE_IFACE interface version "
|
||
|
"invalid: %d\n", version);
|
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|
goto error;
|
||
|
}
|
||
|
did->version = version;
|
||
|
/* free the substring */
|
||
|
pcre_free_substring(pcre_sub_str);
|
||
|
}
|
||
|
return did;
|
||
| ... | ... | |
|
return NULL;
|
||
|
}
|
||
|
/**
|
||
|
* \internal
|
||
|
* \brief Internal function that compares the dce interface version for this
|
||
|
* flow, to the signature's interface version specified using the
|
||
|
* dce_iface keyword.
|
||
|
*
|
||
|
* \param version The dce interface version for this flow.
|
||
|
* \param dce_data Pointer to the Signature's dce_iface keyword
|
||
|
* state(DetectDceIfaceData *).
|
||
|
*/
|
||
|
static inline int DetectDceIfaceMatchIfaceVersion(uint16_t version,
|
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|
DetectDceIfaceData *dce_data)
|
||
|
{
|
||
|
switch (dce_data->op) {
|
||
|
case DETECT_DCE_IFACE_OP_LT:
|
||
|
return (version < dce_data->version);
|
||
|
case DETECT_DCE_IFACE_OP_GT:
|
||
|
return (version > dce_data->version);
|
||
|
case DETECT_DCE_IFACE_OP_EQ:
|
||
|
return (version == dce_data->version);
|
||
|
case DETECT_DCE_IFACE_OP_NE:
|
||
|
return (version != dce_data->version);
|
||
|
default:
|
||
|
return 1;
|
||
|
}
|
||
|
}
|
||
|
/**
|
||
|
* \brief App layer match function for the "dce_iface" keyword.
|
||
|
*
|
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|
* \param t Pointer to the ThreadVars instance.
|
||
|
* \param det_ctx Pointer to the DetectEngineThreadCtx.
|
||
|
* \param f Pointer to the flow.
|
||
|
* \param flags Pointer to the flags indicating the flow direction.
|
||
|
* \param state Pointer to the app layer state data.
|
||
|
* \param s Pointer to the Signature instance.
|
||
|
* \param m Pointer to the SigMatch.
|
||
|
*
|
||
|
* \retval 1 On Match.
|
||
|
* \retval 0 On no match.
|
||
|
*/
|
||
|
int DetectDceIfaceMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx, Flow *f,
|
||
|
uint8_t flags, void *state, Signature *s, SigMatch *m)
|
||
|
{
|
||
|
int ret = 1;
|
||
|
struct uuid_entry *item = NULL;
|
||
|
int i = 0;
|
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|
DetectDceIfaceData *dce_data = (DetectDceIfaceData *)m->ctx;
|
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|
DCERPCState *dcerpc_state = (DCERPCState *)state;
|
||
|
if (dcerpc_state == NULL) {
|
||
| ... | ... | |
|
}
|
||
|
SCMutexLock(&f->m);
|
||
|
int i = 0;
|
||
|
/* if any_frag is not enabled, we need to match only against the first
|
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|
* fragment */
|
||
|
if (!dce_data->any_frag &&
|
||
|
!(dcerpc_state->dcerpc.pfc_flags & PFC_FIRST_FRAG)) {
|
||
|
/* any_frag has not been set, and apparently it's not the first fragment */
|
||
|
ret = 0;
|
||
|
goto end;
|
||
|
}
|
||
|
TAILQ_FOREACH(item, &dcerpc_state->uuid_list, next) {
|
||
|
ret = 1;
|
||
|
/* if the uuid has been rejected(item->result == 1), we skip to the
|
||
|
* next uuid */
|
||
|
if (item->result == 1)
|
||
|
continue;
|
||
|
/* check the interface uuid */
|
||
|
for (i = 0; i < 16; i++) {
|
||
|
if (dce_data->uuid[i] != item->uuid[i]) {
|
||
|
ret = 0;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
/* check the interface version */
|
||
|
if (dce_data->op != DETECT_DCE_IFACE_OP_NONE &&
|
||
|
!DetectDceIfaceMatchIfaceVersion(item->version, dce_data)) {
|
||
|
ret &= 0;
|
||
|
}
|
||
|
/* we have a match. Time to leave with a match */
|
||
|
if (ret == 1)
|
||
|
goto end;
|
||
|
}
|
||
|
return 1;
|
||
|
end:
|
||
|
SCMutexUnlock(&f->m);
|
||
|
return ret;
|
||
|
}
|
||
|
/**
|
||
| ... | ... | |
|
result &= (DetectDceIfaceSetup(NULL, s, NULL, "1234568-1234-1234-1234-123456789ABC,>1,any_frag") == -1);
|
||
|
result &= (DetectDceIfaceSetup(NULL, s, NULL, "12345678-1234-1234-1234-123456789ABC,>65536,any_frag") == -1);
|
||
|
result &= (DetectDceIfaceSetup(NULL, s, NULL, "12345678-1234-1234-1234-123456789ABC,>=1,any_frag") == -1);
|
||
|
result &= (DetectDceIfaceSetup(NULL, s, NULL, "12345678-1234-1234-1234-123456789ABC,<0,any_frag") == -1);
|
||
|
result &= (DetectDceIfaceSetup(NULL, s, NULL, "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)
|
||
|
{
|
||
|
int result = 0;
|
||
|
Signature *s = NULL;
|
||
|
ThreadVars th_v;
|
||
|
Packet p;
|
||
|
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
|
||
|
};
|
||
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
||
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
||
|
memset(&th_v, 0, sizeof(th_v));
|
||
|
memset(&p, 0, sizeof(p));
|
||
|
memset(&f, 0, sizeof(f));
|
||
|
memset(&ssn, 0, sizeof(ssn));
|
||
|
p.src.family = AF_INET;
|
||
|
p.dst.family = AF_INET;
|
||
|
p.payload = NULL;
|
||
|
p.payload_len = 0;
|
||
|
p.proto = IPPROTO_TCP;
|
||
|
StreamL7DataPtrInit(&ssn, StreamL7GetStorageSize());
|
||
|
f.protoctx = (void *)&ssn;
|
||
|
p.flow = &f;
|
||
|
p.flowflags |= FLOW_PKT_TOSERVER;
|
||
|
ssn.alproto = ALPROTO_DCERPC;
|
||
|
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_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5,=0,any_frag; "
|
||
|
"sid:1;)");
|
||
|
if (s == NULL)
|
||
|
goto end;
|
||
|
SigGroupBuild(de_ctx);
|
||
|
DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
|
||
|
r = AppLayerParse(&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 = ssn.aldata[AlpGetStateIdx(ALPROTO_DCERPC)];
|
||
|
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;
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_bindack,
|
||
|
dcerpc_bindack_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
result = 1;
|
||
|
end:
|
||
|
SigGroupCleanup(de_ctx);
|
||
|
SigCleanSignatures(de_ctx);
|
||
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
||
|
DetectEngineCtxFree(de_ctx);
|
||
|
return result;
|
||
|
}
|
||
|
/**
|
||
|
* \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;
|
||
|
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_len);
|
||
|
uint32_t dcerpc_response1_len = sizeof(dcerpc_response1_len);
|
||
|
uint32_t dcerpc_request2_len = sizeof(dcerpc_request2_len);
|
||
|
uint32_t dcerpc_response2_len = sizeof(dcerpc_response2_len);
|
||
|
uint32_t dcerpc_request3_len = sizeof(dcerpc_request3_len);
|
||
|
uint32_t dcerpc_response3_len = sizeof(dcerpc_response3_len);
|
||
|
memset(&th_v, 0, sizeof(th_v));
|
||
|
memset(&p, 0, sizeof(p));
|
||
|
memset(&f, 0, sizeof(f));
|
||
|
memset(&ssn, 0, sizeof(ssn));
|
||
|
p.src.family = AF_INET;
|
||
|
p.dst.family = AF_INET;
|
||
|
p.payload = NULL;
|
||
|
p.payload_len = 0;
|
||
|
p.proto = IPPROTO_TCP;
|
||
|
StreamL7DataPtrInit(&ssn, StreamL7GetStorageSize());
|
||
|
f.protoctx = (void *)&ssn;
|
||
|
p.flow = &f;
|
||
|
p.flowflags |= FLOW_PKT_TOSERVER;
|
||
|
ssn.alproto = ALPROTO_DCERPC;
|
||
|
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_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);
|
||
|
r = AppLayerParse(&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 = ssn.aldata[AlpGetStateIdx(ALPROTO_DCERPC)];
|
||
|
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;
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_bindack,
|
||
|
dcerpc_bindack_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
/* request1 */
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request1,
|
||
|
dcerpc_request1_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
/* response1 */
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_response1,
|
||
|
dcerpc_response1_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
/* request2 */
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request2,
|
||
|
dcerpc_request2_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
/* response2 */
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_response2,
|
||
|
dcerpc_response2_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
/* request3 */
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOSERVER, dcerpc_request3,
|
||
|
dcerpc_request3_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
/* response3 */
|
||
|
r = AppLayerParse(&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;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
result = 1;
|
||
|
end:
|
||
|
SigGroupCleanup(de_ctx);
|
||
|
SigCleanSignatures(de_ctx);
|
||
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
||
|
DetectEngineCtxFree(de_ctx);
|
||
|
return result;
|
||
|
}
|
||
|
/**
|
||
|
* \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;
|
||
|
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
|
||
|
};
|
||
|
uint32_t dcerpc_bind_len = sizeof(dcerpc_bind);
|
||
|
uint32_t dcerpc_bindack_len = sizeof(dcerpc_bindack);
|
||
|
memset(&th_v, 0, sizeof(th_v));
|
||
|
memset(&p, 0, sizeof(p));
|
||
|
memset(&f, 0, sizeof(f));
|
||
|
memset(&ssn, 0, sizeof(ssn));
|
||
|
p.src.family = AF_INET;
|
||
|
p.dst.family = AF_INET;
|
||
|
p.payload = NULL;
|
||
|
p.payload_len = 0;
|
||
|
p.proto = IPPROTO_TCP;
|
||
|
StreamL7DataPtrInit(&ssn, StreamL7GetStorageSize());
|
||
|
f.protoctx = (void *)&ssn;
|
||
|
p.flow = &f;
|
||
|
p.flowflags |= FLOW_PKT_TOSERVER;
|
||
|
ssn.alproto = ALPROTO_DCERPC;
|
||
|
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_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);
|
||
|
r = AppLayerParse(&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 = ssn.aldata[AlpGetStateIdx(ALPROTO_DCERPC)];
|
||
|
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;
|
||
|
r = AppLayerParse(&f, ALPROTO_DCERPC, STREAM_TOCLIENT, dcerpc_bindack,
|
||
|
dcerpc_bindack_len);
|
||
|
if (r != 0) {
|
||
|
SCLogDebug("AppLayerParse for dcerpc failed. Returned %" PRId32, r);
|
||
|
goto end;
|
||
|
}
|
||
|
/* do detect */
|
||
|
SigMatchSignatures(&th_v, de_ctx, det_ctx, &p);
|
||
|
if (!PacketAlertCheck(&p, 1))
|
||
|
goto end;
|
||
|
result = 1;
|
||
|
end:
|
||
|
SigGroupCleanup(de_ctx);
|
||
|
SigCleanSignatures(de_ctx);
|
||
|
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
|
||
|
DetectEngineCtxFree(de_ctx);
|
||
|
return result;
|
||
|
}
|
||
|
#endif
|
||
|
void DetectDceIfaceRegisterTests(void)
|
||
|
{
|
||
|
#ifdef UNITTESTS
|
||
|
UtRegisterTest("DetectDceIfaceTestParse01", DetectDceIfaceTestParse01, 1);
|
||
|
UtRegisterTest("DetectDceIfaceTestParse02", DetectDceIfaceTestParse02, 1);
|
||
|
UtRegisterTest("DetectDceIfaceTestParse03", DetectDceIfaceTestParse03, 1);
|
||
| ... | ... | |
|
UtRegisterTest("DetectDceIfaceTestParse09", DetectDceIfaceTestParse09, 1);
|
||
|
UtRegisterTest("DetectDceIfaceTestParse10", DetectDceIfaceTestParse10, 1);
|
||
|
UtRegisterTest("DetectDceIfaceTestParse11", DetectDceIfaceTestParse11, 1);
|
||
|
UtRegisterTest("DetectDceIfaceTestParse12", DetectDceIfaceTestParse12, 1);
|
||
|
UtRegisterTest("DetectDceIfaceTestParse13", DetectDceIfaceTestParse13, 1);
|
||
|
UtRegisterTest("DetectDceIfaceTestParse14", DetectDceIfaceTestParse14, 1);
|
||
|
#endif
|
||
|
return;
|
||
|
}
|
||
| src/detect-dce-iface.h | ||
|---|---|---|
|
#define __DETECT_DCE_IFACE_H__
|
||
|
typedef enum DetectDceIfaceOperators_ {
|
||
|
DETECT_DCE_IFACE_OP_LT = 1,
|
||
|
DETECT_DCE_IFACE_OP_NONE = 0,
|
||
|
DETECT_DCE_IFACE_OP_LT,
|
||
|
DETECT_DCE_IFACE_OP_GT,
|
||
|
DETECT_DCE_IFACE_OP_EQ,
|
||
|
DETECT_DCE_IFACE_OP_NE,
|
||
| src/detect-dce-opnum.c | ||
|---|---|---|
|
#include "suricata-common.h"
|
||
|
#include "detect.h"
|
||
|
#include "detect-parse.h"
|
||
|
#include "detect-engine.h"
|
||
|
#include "detect-engine-mpm.h"
|
||
|
#include "flow.h"
|
||
|
#include "flow-var.h"
|
||
|
#include "app-layer.h"
|
||
|
#include "app-layer-dcerpc.h"
|
||
|
#include "queue.h"
|
||
|
#include "stream-tcp-reassemble.h"
|
||
|
#include "detect-dce-opnum.h"
|
||
|
#include "util-debug.h"
|
||
| ... | ... | |
|
int opts = 0;
|
||
|
sigmatch_table[DETECT_DCE_OPNUM].name = "dce_opnum";
|
||
|
sigmatch_table[DETECT_DCE_OPNUM].alproto = ALPROTO_DCERPC;
|
||
|
sigmatch_table[DETECT_DCE_OPNUM].Match = NULL;
|
||
|
sigmatch_table[DETECT_DCE_OPNUM].AppLayerMatch = DetectDceOpnumMatch;
|
||
|
sigmatch_table[DETECT_DCE_OPNUM].Setup = DetectDceOpnumSetup;
|
||
| ... | ... | |
|
exit(EXIT_FAILURE);
|
||
|
}
|
||
|
/* free the substring */
|
||
|
pcre_free_substring(pcre_sub_str);
|
||
|
/* keep a copy of the strdup string in dup_str_head so that we can free it
|
||
|
* once we are done using it */
|
||
|
dup_str_head = dup_str;
|
||
| ... | ... | |
|
return NULL;
|
||
|
}
|
||
|
/**
|
||
|
* \brief App layer match function for the "dce_opnum" keyword.
|
||
|
*
|
||
|
* \param t Pointer to the ThreadVars instance.
|
||
|
* \param det_ctx Pointer to the DetectEngineThreadCtx.
|
||
|
* \param f Pointer to the flow.
|
||
|
* \param flags Pointer to the flags indicating the flow direction.
|
||
|
* \param state Pointer to the app layer state data.
|
||
|
* \param s Pointer to the Signature instance.
|
||
|
* \param m Pointer to the SigMatch.
|
||
|
*
|
||
|
* \retval 1 On Match.
|
||
|
* \retval 0 On no match.
|
||
|
*/
|
||
|
int DetectDceOpnumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx, Flow *f,
|
||
|
uint8_t flags, void *state, Signature *s, SigMatch *m)
|
||
|
{
|
||
|
return 1;
|
||
|
DetectDceOpnumData *dce_data = (DetectDceOpnumData *)m->ctx;
|
||
|
DetectDceOpnumRange *dor = dce_data->range;
|
||
|
DCERPCState *dcerpc_state = (DCERPCState *)state;
|
||
|
if (dcerpc_state == NULL) {
|
||
|
SCLogDebug("No DCERPCState for the flow");
|
||
|
return 0;
|
||
|
}
|
||
|
for ( ; dor != NULL; dor = dor->next) {
|
||
|
if (dor->range2 == DCE_OPNUM_RANGE_UNINITIALIZED) {
|
||
|
if (dor->range1 == dcerpc_state->opnum)
|
||
|
return 1;
|
||
|
} else {
|
||
|
if (dor->range1 <= dcerpc_state->opnum &&
|
||
|
dor->range2 >= dcerpc_state->opnum) {
|
||
|
return 1;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
/**
|
||
| ... | ... | |
|
return result;
|
||
|
}
|
||
|
/**
|
||
|
* \test Test a valid dce_opnum entry with a bind, bind_ack and a request.
|
||
|
*/
|
||
|
static int DetectDceOpnumTestParse08(void)
|
||
|
{
|
||
|
int result = 0;
|
||
|
Signature *s = NULL;
|
||
|
ThreadVars th_v;
|
||
|
Packet p;
|
||
|
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,
|
||
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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,
|
||
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0x26, 0x58, 0x42, 0x71, 0xf4, 0x18, 0x89, 0x2a,
|
||
|
0xf6, 0xca, 0xb5, 0xf5, 0x2c, 0xd8, 0x42, 0xdd,
|
||
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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,
|
||
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0xa5, 0x9b, 0xcb, 0xe6, 0x35, 0x9a, 0x4a, 0x22,
|
||
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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,
|
||
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0xf5, 0x64, 0x1e, 0x06, 0x9d, 0x64, 0x1e, 0x06,
|
||
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0x8d, 0x5c, 0x49, 0x32, 0xa5, 0x9b, 0x4a, 0xdd,
|
||
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0xf1, 0xbf, 0x56, 0xa1, 0x61, 0xbf, 0x13, 0x78,
|
||
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0xf4, 0xc9, 0x1a, 0x11, 0x77, 0xc9, 0x22, 0x51,
|
||
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0xc0, 0xf5, 0x2e, 0xa9, 0x61, 0xc9, 0x22, 0x50,
|
||
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0xc0, 0xf8, 0x3c, 0xa9, 0x71, 0xc9, 0x1b, 0x72,
|
||
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0xf4, 0x64, 0x9d, 0xb1, 0x5a, 0x4c, 0xdf, 0xa1,
|
||
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0x61, 0x8b, 0x12, 0x78, 0xfc, 0xc8, 0x1f, 0x72,
|
||
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0x2e, 0x77, 0x1a, 0x42, 0xcf, 0x9f, 0x10, 0x72,
|
||
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0x2e, 0x47, 0xa2, 0x63, 0xa5, 0x9b, 0x4a, 0x48,
|
||
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0xa5, 0xf3, 0x26, 0x4e, 0xca, 0xf8, 0x22, 0x57,
|
||
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0xc4, 0xf7, 0x0b, 0x4a, 0xf3, 0xf2, 0x38, 0x56,
|
||
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0xf1, 0xcd, 0xb5, 0xf5, 0x26, 0x5f, 0x5a, 0x78,
|
||
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0xf7, 0xf1, 0x0a, 0x4a, 0xa5, 0x8b, 0x4a, 0x22,
|
||
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0xf7, 0xf1, 0x4a, 0xdd, 0x75, 0x12, 0x0e, 0x06,
|
||
|
0x81, 0xc1, 0xd9, 0xca, 0xb5, 0x9b, 0x4a, 0x22,
|
||
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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,
|
||
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0x20, 0x5b, 0x34, 0x23, 0x66, 0x64, 0x1f, 0xd2,
|
||
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0xa5, 0x9b, 0x4a, 0x22, 0xa5, 0x9b, 0x4a, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41,
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