SentryWhale retweeted
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/
SentryWhale retweeted
I just published my detailed write-up for the task "Keep It Simple" from XmasCTF 2020. It involved revisiting the first Linear Cryptanalysis attack ever by Matsui (I used a Meet-ITM tweak) to defeat a modified version of FEAL-4 cipher with 16 pt/ct pairs.
sentrywhale.com/writeup/xmas…
We managed to grab first place in Europe and 2nd worldwide at @CSAW_NYUTandon CTF Finals this weekend. GG to all the contestants and thanks for the event 👌
SentryWhale retweeted
New Web-Client challenge: Javascript - Webpack
root-me.org/en/Challenges/We…
SentryWhale retweeted
"J’ai toujours comme objectif de comprendre un maximum de choses dans un maximum de domaines différents"
@Hexabeast (Martin Perrier) s'est classé à la première position au classement général du #FCSC2020 🥇
En savoir sur + sur son profil & ses spécialités ssi.gouv.fr/agence/cybersecu…
SentryWhale retweeted
After almost 2 years with Hackatsuki CTF team, I'm excited to pwn things w/ @SentryWhale guys!
SentryWhale retweeted
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/france…
SentryWhale retweeted
Hi, it's been a while! :D here is my #writeup for the web challenge TOO_MANY_CREDITS from #TAMUctf 2020, it was a java unsafe deserialization exploitation, leading to remote code execution sentrywhale.com/writeup/tamu… #ysoserial #web #springboot
SentryWhale retweeted
Here is my write-up for the reverse challenge Secure-Auth from @Areizen_ at @NorzhCTF
Featuring Unicorn and some cool anti-disassembly :D
nofix.re/2020/NorzhCTF2020-s…
SentryWhale retweeted
Hey ! Mais les inscriptions pour le #BreizhCTF2k20 c'est aujourd'hui ! Rendez vous à midi pile.
SentryWhale retweeted
🧐On parle modalité d'inscription ! On reste attentif svp,
3 choix sont possibles pour vous inscrire :
👉 équipe complète de 5 personnes
👉 équipe incomplète de 2 à 4 personnes
👉 inscription solo
🕛 ouverture demain à 12:00
breizhctf.com/inscriptions/
SentryWhale retweeted
L'#AperiCTF est terminé, un grand bravo à @SentryWhale, 7h4l1um, TAPZCREW et à tous les participants ! Et encore un grand merci à nos sponsors !
Les WUs arrivent progressivement sur notre site, n'hésitez donc pas à consulter régulièrement la page aperikube.fr/docs/aperictf_2…
Reversing windows sys internals, heap exploitation, Minecraft challenges and more in our WU from #RedpwnCTF, out now on our website
Btw we got the 4th place at HackCon 2019 CTF, unusual and interesting misc challenges, and cool crypto challs.
Stay tuned for in coming write-ups.
Sentry Whale gets the 3rd place at #RedpwnCTF ! Great time solving interesting pwn & reverse challenges. Write-ups are coming !



















