Alessandro Gario
Reverse engineer, C++ enthusiast, Arch Linux user, gamer.
Everything you see here has been written by my cat.
Categories
DisARMing a Raspberry Pi - BSides San Francisco CTF 2017
The diary of a small expedition my old friend Raspberry and I have undertaken, exploring the ARM challenge called ‘disarming’ from the BSides San Francisco CTF 2017. ... Read more
Solving SmokeStack, from the third Flare-On Challenge
A tour in the depths of the SmokeStack level of the third Flare On Challenge from FireEye. The article also covers the internals of the virtual machine used by the binary, presenting a simple command line disassembler written in C++. ... Read more
Writeup for the Transformer challenge from VolgaCTF 2016 Quals
This is the writeup for another challenge from the VolgaCTF 2016 Quals; the task consists in analyzing a binary executable that encrypts files and find a way to recover the clear text from an encoded file. The article also includes a working implementation for a compatible encoder and decoder written in C++. ... Read more
Writeup for the Broken challenge from VolgaCTF 2016 Quals
This is a writeup for the Broken challenge from VolgaCTF 2016 Quals. The first part of the article will explain how to remove the anti-debugging protection and restore the opcodes that have been removed. The second part will make use of radare2 to patch the program and repair the logic of the locks used to synchronize the threads. ... Read more