Add rop_junk and rop_nop

lib/msf/core/exploit/ropdb.rb

@@ -31,5 +31,13 @@ module Exploit::RopDb
     return rop_payload
   end
 
+  def rop_junk
+    rand_text_alpha(4).unpack("V")[0].to_i
+  end
+
+  def rop_nop
+    make_nops(4).unpack("V")[0].to_i
+  end
+
 end
 end