Stay tuned for our upcoming Sharky CTF! Pentest/crypto/pwn/reverse/web/forensics! The CTF will last 2 days and will be starting 09/05/2020 00h00 UTC. We hope you will have fun and you will be learning something ! We will be announcing prizes soon! 😉 ctfd.sharkyctf.xyz

Découvrez les 30 finalistes du France #Cybersecurity Challenge #FCSC2020 pour les catégories "Junior" & "Senior" Après une dernière épreuve de sélection, certains d'entre-eux rejoindront la #TeamFR pour l'#ECSC2020 🏅 🆕ssi.gouv.fr/actualite/fran…

2020 is a complicated year. What would you prefer for Ph0wn 2020?

We managed to grab first place in Europe and 2nd worldwide at CSAW Cybersecurity Games and Conference CTF Finals this weekend. GG to all the contestants and thanks for the event 👌

Our first Twitter vulnerable code mini-puzzle. What's the problem with this code? #crypto #cryptography #puzzle

Save your date for *December 10, 2021* ! We can tell you it will be worth it. We have already started working on new ideas, you will like them :) We thank all our early sponsors for supporting us during those difficult times: YesWeHack ⠵, NXP, Mataru and hardwear.io 3/3

We really enjoyed the challenges from TetCTF. After the CTF wrapped up, the discord was busy learning more about the challenges This blogpost aims to capture the beauty of Ndh's challenges by including a background to finite fields and gaussian integers. blog.cryptohack.org/tetctf-2021

Finally setting Tick repo public! Tick is a Linux library that preloads ~95% of libc's functions. This is useful when you have to deal with huge ptrace usage, preventing you from tracing/dbg a binary. GL: gitlab.com/Nofix/tick YT presentation [FR]: youtube.com/watch?v=i1ceos…

Sharing a partially redacted PEM online is the same as sharing the PEM. In this blog post, we show that with partial exposure of a PEM, private data can be extracted to recover the full private key. blog.cryptohack.org/twitter-secrets

I just published the writeups for the 7 cool crypto tasks at FCSC (French qualifier for the ECSC) organized by ANSSI. It goes from ECC dlog in Z/p^4Z to exploiting a weakened Sbox in Skipjack cipher, and many more. You can find them here: sentrywhale.com/writeup/

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If you want to revisit the "recent" attacks on Mega E2E encryption (mega-awry.io) and play the role of a malicious Mega server, I wrote a set of challenges which was released yesterday on cryptohack.org, alongside some great new challenges!have fun 🙂

Members from past ECSC Team France played the Insomni'hack Teaser CTF and we ranked 4th! Thanks Insomni'hack for the organization and congrats to justCatTheFish, 0daysober and p4! We hope to see you all in Lausanne! md5("TeamFR_alumni") = 18b72b5a06dcd23f498e6e6339159924

L’ANSSI lance #Hackropole 🏛 une plateforme regroupant la quasi-totalité des épreuves du France Cybersecurity Challenge #FCSC. 🇫🇷 🏆 Une centaine d’épreuves est déjà disponible ! 💪 🚀Rendez-vous dès maintenant sur : cyber.gouv.fr/actualites/lan… #ANSSI #numérique #FCSC #ECSC