Refactor the BeanFactory gadget code

lib/msf/core/exploit/java_deserialization.rb

@@ -23,7 +23,13 @@ module Exploit::JavaDeserialization
       raise RuntimeError, 'Invalid shell for Java Deserialization payload generation'
     end
 
-    Msf::Util::JavaDeserialization.ysoserial_payload(name, command, modified_type: shell)
+    if name == 'BeanFactory'
+      blob = Msf::Util::JavaDeserialization::BeanFactory.generate(command, shell: shell)
+    else
+      blob = Msf::Util::JavaDeserialization.ysoserial_payload(name, command, modified_type: shell)
+    end
+
+    blob
   end
 
   # Generate a binary blob that when deserialized by Java will execute the specified payload. This routine converts the
@@ -60,5 +66,11 @@ module Exploit::JavaDeserialization
     generate_java_deserialization_for_command(name, shell, command)
   end
 
+  def self.gadget_chains
+    chains = Msf::Util::JavaDeserialization.ysoserial_payload_names
+    chains << 'BeanFactory' # not a ysoserial payload, but still supported
+    chains.sort
+  end
+
 end
 end