[Pwnable.kr] input writeup – Toddler’s bottle

This level is particularly fun, kind of easy, straight forward and really useful in the long run. Very often, to exploit a binary or an executable, you need to provide data or input to it, and there are multiple ways you can do that, depending on how…

[Pwnable.kr] Why random number aren’t really random

We’ve made it so far to the “random” challenge. Granted, the challenges don’t need that much explaining as they are somewhat easy, but I try to dive into some of the details, because I believe, that if you master the little details, and know how…

[Pwnable.kr] passcode writeup – Toddler’s bottle

As the hint states, this level’s goal is to try and hack a passcode based login program. If we view the source code and/or execute the program, we’ll notice that it’s straightforward, it asks you for your name, then enter two passcodes, and then the…