RE-Dojo

Flare-On 10 solutions

Sun, 19 Nov 2023 00:00:00 +0000

I once again participated in the Flare-On challenge organized by the FLARE team.

This year, there was a total of 13 challenges to solve, which is more than previous years and the difficulty was significantly higher as well. Apart from classic Windows C/C++ executables, this year’s contest featured a Rust challenge, a Android application, a hard disk image compromised with a ransomware and even a PDP-11 challenge.

Flare-On 9 solutions

Sun, 13 Nov 2022 00:00:00 +0000

This year, I participated in the Flare-On challenge organized by the FLARE team from ~~Mandiant~~ Google.

In total, 11 challenges of reverse engineering with increasing difficulty were to be solved. I did managed to resolve them all and as there was not a lot of activity on this blog recently, I pushed myself to put together some write-ups.

FCSC 2020 - Keykoolol

Sat, 09 May 2020 00:00:00 +0000

A few weeks ago, I participated in the France CyberSecurity Challenge (or FCSC in short); a Jeopardy CTF organized by the National Cybersecurity Agency of France (ANSSI) to select the french team that will participate to the European Cybersecurity Challenge (ECSC) at the end of 2020.

Among the challenges proposed (crypto, reverse, pwn, web, forensic, hardware), I really liked doing one of the reverse track named keykoolol.

NorthSec 2019 - Doom

Wed, 22 May 2019 00:00:00 +0000

We, once again, participated in the NorthSec competition. This article is about the DOOM challenge which was pretty interesting as you had to validate it at the VR station. @actgardner already made a write-up that you can find here. I wanted to complete it and show another solution that icecr4ck and I came up with.

NorthSec 2018 - Mars Analytica

Sun, 28 Oct 2018 00:00:00 +0000

In May 2018, the NorthSec conference and its on-site CTF competition were held. Once again the competition was awesome, the challenges were very diverse and the infrastructure was well configured. One of the reverse engineering challenges was a program called MarsAnalytica. This challenge remained unsolved at the end of the CTF. This binary was worth a lot of points and I think it was the right amount of points due to the time one would have to spend to solve it.

ECW 2017 - Red Diamond

Fri, 28 Sep 2018 00:00:00 +0000

Pour la deuxième année consécutive, Thales et Airbus ont organisé un CTF à destination des étudiants européens: le challenge ECW. Tout comme l’année dernière, celui-ci est séparé en une épreuve qualificative individuelle (CTF Jeopardy classique) et une phase finale par équipe avec un format Attaque/Défense.