nope, dumping has to be done on the wiiu itself, just have a search in the definitive guide thread, should be something in there for game dumping i assume.....key words are dumpiine and pygecko FSA.....they need to be dumped in 2 stages atm though
FSA = the games files/content directory (dumped via pygecko)
RPX/RPL = the games executable (dumped ia dumpiine)