Alessandro Gario

Reverse engineer, C++ enthusiast, Arch Linux user, gamer.

Everything you see here has been written by my cat.

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ctf development multiwars2 news reversing

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

MultiWars2 support for Guild Wars 2 x64

I’ve release a new version of MultiWars2 that is compatible with the recently released x64 client for Windows. ... Read more