Official discussion thread for Auth-or-out. Please do not post any spoilers or big hints.
Finally done this awesome challenge! It was a nice way to start learning this type of exploitation techniques.
If anyone needs a hint feel free to PM me! 
WOW. Took a few days to really understand what was going on (even build a custom GEF extension to assist), and then took even longer to slowly put together an exploit and get it working. Learned a lot along the way