Auxiliary for explore session injection

More about http://joridos.com/hacking/metasploit/rails/ruby/2014/09/03/session-injection-Challenge-criando-modulo-metasploit/

this auxiliary require mechanize gem
Unless I missed something, it doesn't seem like you are using anything from this mixin.  Similarly, why are you using mechanize?  Personally I like and use mechanize, but I don't know if you necessarily need it here.