We all love bedtime stories, and these stories are even better when they turn into reality. This cinderella story is about how a big vendor rolled its own algorithm to "encrypt" its firmware images to deter poor hackers like us from fiddling around and potentially uncover flaws. But what if your motive is not to uncover potential flaws, but simply to agnostically fingerprint devices left vulnerable on the internet?

Join us into a semi-deepdive of reverse engineering the Fortigate firmware "encryption" to satisfy our own curiosity, but also to make the web that little bit more secure by fingerprinting vulnerable devices in a non-obtrusive manner with the endgoal of notifying the related parties.