| Current Path : /usr/local/share/examples/libnet11/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/local/share/examples/libnet11/sebek.c |
/*
*
* libnet 1.1
* Build a Sebek packet
*
* Copyright (c) 2004 Frederic Raynal <pappy@security-labs.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#if (HAVE_CONFIG_H)
#if ((_WIN32) && !(__CYGWIN__))
#include "../include/win32/config.h"
#else
#include "../include/config.h"
#endif
#endif
#include "./libnet_test.h"
void usage(char *name)
{
fprintf(stderr,
"usage: %s [-D eth_dst] [-s source_ip] [-d destination_ip]"
"[-u UDP port] [-m magic] [-v version] [-t type] [-S sec] [-U usec] [-P PID] [-I UID] [-f FD] [-c cmd]"
" [-i iface] [-p payload]\n",
name);
}
int
main(int argc, char *argv[])
{
int c, port = 1101;
libnet_t *l;
char *device = NULL;
char *eth_dst = "11:11:11:11:11:11";
char *dst = "2.2.2.2", *src = "1.1.1.1";
u_long src_ip, dst_ip;
char errbuf[LIBNET_ERRBUF_SIZE];
libnet_ptag_t ptag = 0;
u_char *payload = 0;
char payload_flag = 0;
u_long payload_s = 0;
unsigned int magic = 0x0defaced,
counter = 0x12345678,
sec = 0, usec = 0,
pid = 1,
uid = 666,
fd = 2;
char *cmd = "./h4ckw0r1D";
unsigned int length = strlen(cmd)+1;
unsigned short version = SEBEK_PROTO_VERSION, type = SEBEK_TYPE_READ;
printf("libnet 1.1 packet shaping: Sebek[link]\n");
/*
* handle options
*/
while ((c = getopt(argc, argv, "D:d:s:u:m:v:t:S:U:P:I:f:c:p:i:h")) != EOF)
{
switch (c)
{
case 'D':
eth_dst = optarg;
break;
case 'd':
dst = optarg;
break;
case 's':
src = optarg;
break;
case 'i':
device = optarg;
break;
case 'u':
port = atoi(optarg);
break;
case 'm':
magic = strtoul(optarg, NULL, 10);
break;
case 'v':
version = (unsigned short) strtoul(optarg, NULL, 10);
break;
case 't':
type = (unsigned short) strtoul(optarg, NULL, 10);
break;
case 'S':
sec = strtoul(optarg, NULL, 10);
break;
case 'U':
usec = strtoul(optarg, NULL, 10);
break;
case 'P':
pid = strtoul(optarg, NULL, 10);
break;
case 'I':
uid = strtoul(optarg, NULL, 10);
break;
case 'f':
fd = strtoul(optarg, NULL, 10);
break;
case 'c':
cmd = optarg;
length = strlen(cmd);
break;
case 'p':
payload_flag = 1;
payload = optarg;
payload_s = strlen(payload);
break;
case 'h':
usage(argv[0]);
exit(EXIT_SUCCESS);
default:
exit(EXIT_FAILURE);
}
}
/*
* Initialize the library. Root priviledges are required.
*/
l = libnet_init(
LIBNET_LINK_ADV, /* injection type */
device, /* network interface */
errbuf); /* error buffer */
if (l == NULL)
{
fprintf(stderr, "libnet_init() failed: %s", errbuf);
exit(EXIT_FAILURE);
}
printf("Using device %s\n", l->device);
if (payload_flag)
{
memset(cmd, 0, sizeof(cmd));
memcpy(cmd, payload, (payload_s < 12 ? payload_s : 12));
length = payload_s;
}
if ((dst_ip = libnet_name2addr4(l, dst, LIBNET_RESOLVE)) == -1)
{
fprintf(stderr, "Bad destination IP address: %s\n", dst);
exit(EXIT_FAILURE);
}
if ((src_ip = libnet_name2addr4(l, src, LIBNET_RESOLVE)) == -1)
{
fprintf(stderr, "Bad source IP address: %s\n", src);
exit(EXIT_FAILURE);
}
if (!payload)
{
payload = cmd;
payload_s = length;
}
ptag = libnet_build_sebek(
magic,
version,
type,
counter,
sec,
usec,
pid,
uid,
fd,
cmd,
/* LIBNET_ETH_H + LIBNET_IPV4_H + LIBNET_UDP_H + LIBNET_SEBEK_H +*/ length,
payload,
payload_s,
l,
0
);
if (ptag == -1)
{
fprintf(stderr, "Can't build Sebek header: %s\n", libnet_geterror(l));
goto bad;
}
ptag = libnet_build_udp(
port, /* source port */
port, /* destination port */
LIBNET_UDP_H + LIBNET_SEBEK_H + payload_s, /* packet length */
0, /* checksum */
NULL, /* payload */
0, /* payload size */
l, /* libnet handle */
0); /* libnet id */
if (ptag == -1)
{
fprintf(stderr, "Can't build UDP header: %s\n", libnet_geterror(l));
goto bad;
}
ptag = libnet_build_ipv4(
LIBNET_IPV4_H + LIBNET_UDP_H + LIBNET_SEBEK_H + payload_s,/* length */
0, /* TOS */
242, /* IP ID */
0, /* IP Frag */
64, /* TTL */
IPPROTO_UDP, /* protocol */
0, /* checksum */
src_ip, /* source IP */
dst_ip, /* destination IP */
NULL, /* payload */
0, /* payload size */
l, /* libnet handle */
0); /* libnet id */
if (ptag == -1)
{
fprintf(stderr, "Can't build IP header: %s\n", libnet_geterror(l));
exit(EXIT_FAILURE);
}
eth_dst = libnet_hex_aton(eth_dst, &c);
ptag = libnet_autobuild_ethernet(
eth_dst, /* ethernet destination */
ETHERTYPE_IP, /* protocol type */
l); /* libnet handle */
free(eth_dst);
if (ptag == -1)
{
fprintf(stderr, "Can't build ethernet header: %s\n",
libnet_geterror(l));
goto bad;
}
/*
* write to the wire
*/
c = libnet_write(l);
if (c == -1)
{
fprintf(stderr, "Write error: %s\n", libnet_geterror(l));
goto bad;
}
else
{
fprintf(stderr, "Wrote %d byte Sebek packet; check the wire.\n", c);
}
libnet_destroy(l);
return (EXIT_SUCCESS);
bad:
libnet_destroy(l);
return (EXIT_FAILURE);
return 0;
}