[daeken]

I've worked in/with security along these lines for a very long time. This CTF (particularly level 8) has been some of the most difficult stuff I've ever done. Thanks to Stripe for putting this together; if I wasn't already a customer, I absolutely would be now!

[ontoillogical]

More difficult than hotel locks? :)

[daeken]

Yes. A million times, yes. While the lock stuff took a while and was rather involved, it was simple. This... not so much.

[timo614]

Ended up finally finishing level 8. Was a huge pain but definitely feel so much better for completing it -- what a rush.

Yeah it was pretty tricky but once you get down the approach it's not too bad. Took me awhile to realize what was going on.