European Cyber Week 2022 write-ups

22/11/2022

Blog technique

European Cyber Week 2022 write-ups

Alexandre RIPOTEAU, Andy RUSSON, Luc GOSSART

Find here the write-ups of the crypto and web challenges that our teams created for the European Cyber Week pre-qualification tests of CTF, a recognized cybersecurity event that took place in Rennes from November 15 to 17, 2022. The challenges will be published in a next blog post. Enjoy!

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Voir les derniers articles de notre Blog technique

4 décembre 2023

Find here the crypto and reverse challenges that our teams created for the European Cyber Week pre-qualification and qualification tests of CTF, a recognized cybersecurity event that took place in Rennes from November 21 to 23, 2023.

29 mars 2023

On the 24th of January, AMOSSYS and Malizen put together a Blue Team CTF, for the SupSec seminar organized by Inria. In this blog post, we explain how we, at AMOSSYS, generated the dataset used in this challenge.

20 décembre 2022

Find here the crypto and web challenges that our teams created for the European Cyber Week pre-qualification tests of CTF, a recognized cybersecurity event that took place in Rennes from November 15 to 17, 2022.

14 septembre 2022

This article starts with a quick overview on NIDS (Network Intrusion Detection System) evasions to remind what it is and why it could happen.

31 mars 2021

Essor du numérique, diversification des surfaces d’exposition, multiplication des cyberattaques… Depuis plusieurs années, la sécurité informatique est devenue une composante essentielle de l'administration d'un Système d'Information (SI).

18 septembre 2020

Depuis plusieurs années, l'écosystème informatique a dû faire face à une recrudescence de compromissions de systèmes d'informations par des rançongiciels, ou cryptolockers, qui s'introduisent principalement par des méthodes automatiques (_spear phishing_, etc.).

12 août 2020

We will discuss the feasibility in real world of the Spectre V1 flaw from a cross-process, userland perspective.

29 juillet 2020

This article details the behavior of the Sodinokibi ransomware using static analysis with IDA Pro. Sodinokibi, also called REvil, [...]

14 janvier 2020

Focus on the architecture of the Linux random number generator, also known as `/dev/urandom`. How does it work? Is it secure?

4 novembre 2019

Brief technical analysis of the Microsoft Windows "filter communication port" kernel communication mechanism with filtering drivers.

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