educationalsabbatical
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I went on a small pwning adventure. The course has different modules on program security, and the first module is shellcoding. I’ve always tried to stay away from assembly and shellcoding. I’ve only done one challenge before (refer to a previous blogpost). I remember the first time I had to do this challenge with no…
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While I was on holiday, I decided to leave my laptop behind (bad decision, always travel with your loved ones). At first, it was fine. However, last minute on the BlackHoodie Discord, I noticed there was a reverse engineering challenge by ProofPoint to win a free malware reverse engineering course by Invoke RE (and a…
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This is a challenge from the Hack The Box cyber apocalypse CTF (2025). The goal of this challenge is to exploit a stack overflow. However, this binary has stack canaries protection so we need to leak the canary in order to avoid this : Stack canaries Stack canaries were implemented to prevent buffer overflow attacks.…
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This is something I always found voodoo, figuring out how to recognize structures in decompiled binary code. Table of contents Introduction A struct is a data structure in C/C++ that groups variables of different types. I will be using BinaryNinja in this demonstration. I chose libz.1.3.1.dylib and also had access to the source code via…
pamoutaf 