Nicolas Grégoire
agarri.fr
Nicolas Grégoire
@agarri.fr
Web hacker 😈
Burp Suite Pro trainer 👨‍🏫
Maintainer of @mastering-burp.agarri.fr 🛠️
Pinned
The 2026 online public sessions of my "Mastering Burp Suite Pro" course have been published 📅

- March 24th to 27th, in French 🇫🇷
- April 14th to 17th, in English 🇬🇧

hackademy.agarri.fr/2026

PS: feel free to ping me if you'd like to temporarily block a seat or are looking for a 10% coupon 🎁
Agarri
Training
hackademy.agarri.fr
Reposted by Nicolas Grégoire
THC Release 💥: The world’s largest IP<>Domain database: ip.thc.org

All forward and reverse IPs, all CNAMES and all subdomains of every domain. For free.

Updated monthly.

Try: curl ip.thc.org/1.1.1.1

Raw data (187GB): ip.thc.org/docs/bulk-da...

(The fine work of messede 👌)
December 17, 2025 at 1:33 PM
#Protip Need to go really fast and HEAD is disabled?
Use GET and the Range header...
December 20, 2025 at 10:55 AM
Reposted by Nicolas Grégoire
The wait is over! Phrack 72 40th Anniversary Edition is available now.

Order straight to your doorstep — the perfect gift for your fellow hacker, just in time for the holidays 🎄

No need to go to rely on the warez scene with scans anymore 😅

Order here: www.lulu.com/shop/phrack-...
December 13, 2025 at 9:34 AM
Reposted by Nicolas Grégoire
THC Release: 🎄Smallest SSHD backdoor🎄

- Does not add any new file
- Survives apt-update
- Does not use PAM or authorized_keys

Just SSHD trickery....adds one line only.

More at thc.org/tips 👌
December 14, 2025 at 2:47 PM
Looking for a Christmas gift for yourself? #burp #training #2026

There’s 9 seats left for the English-speaking session, and 5 for the French-speaking one
The 2026 online public sessions of my "Mastering Burp Suite Pro" course have been published 📅

- March 24th to 27th, in French 🇫🇷
- April 14th to 17th, in English 🇬🇧

hackademy.agarri.fr/2026

PS: feel free to ping me if you'd like to temporarily block a seat or are looking for a 10% coupon 🎁
Agarri
Training
hackademy.agarri.fr
December 13, 2025 at 1:39 PM
Printed version of Paged Out #7, collected during GreHack 2025 🤩
December 6, 2025 at 12:13 PM
This vulnerability was the inspiration for the first step of the Panel challenge we played during last week’s Grehack CTF

But we found a dumb bypass 😎
December 3, 2025 at 2:42 PM
Reposted by Nicolas Grégoire
📜 L’4N551 4 un3 m1551on 9our vou5.

S1 vou5 l’4cc3973z, vou5 s3r3z 4m3n3 4 :
*53rv1r l’1nt3r37 g3n3r4l 37 9ro73g3r l4 N471on f4c3 4 l4 m3n4c3 cy83r ;
*1nc4rn3r l’3xc3ll3nc3 fr4nç4153 3n m4713r3 d3 cy83rd3f3n53.

9our 7rouv3r vo7r3 m1551on :
🔗 www.welcometothejungle.com/fr/companies...
December 3, 2025 at 10:57 AM
Stealth (from Team-Teso, Phrack staff and other groups) passed away earlier this year 😢

I didn't know him personally, but his groundbreaking research has been a constant influence on my career

www.thc.org/404/
www.thc.org
December 3, 2025 at 12:10 PM
Here's the recording of the stream we made earlier this week with @laluka.bsky.social, @thesytten.bsky.social and @rhynorater.bsky.social

If you speak French, you may appreciate its title: "Caido de Noël" 😄 🎁 🎅

www.youtube.com/watch?v=JvUm...
EP 208 EN | Caido de Noel ? Ft. @Agarri_FR @Rhynorater @TheSytten
YouTube video by Laluka
www.youtube.com
November 27, 2025 at 8:52 AM
Reposted by Nicolas Grégoire
I really want to know the full story behind this epic hack, and yet I also hope it is never solved.
It's my favorite day! It's the 38th anniversary of the Max Headroom signal broadcast intrusion!

1st incident lasted 25s during the 9PM news on WGN-TV in Chicago; The 2nd, 2hrs later, lasted ~90s on PBS affiliate WTTW during Dr. Who.

You can watch it here: www.youtube.com/watch?v=oqge...
Max Headroom 1987 Broadcast Signal Intrusion Incident
YouTube video by andrew867
www.youtube.com
November 22, 2025 at 7:50 PM
Reposted by Nicolas Grégoire
I've uploaded the slides of my recent talk "JS Engine Security in 2025": saelo.github.io/presentation.... I think there'll also be a recording available at some point (otherwise I can make one as not everything's in the slides).

Fantastic conference as usual, big thanks to the PoC Crew!
saelo.github.io
November 24, 2025 at 9:58 AM
The 2026 online public sessions of my "Mastering Burp Suite Pro" course have been published 📅

- March 24th to 27th, in French 🇫🇷
- April 14th to 17th, in English 🇬🇧

hackademy.agarri.fr/2026

PS: feel free to ping me if you'd like to temporarily block a seat or are looking for a 10% coupon 🎁
Agarri
Training
hackademy.agarri.fr
November 24, 2025 at 10:14 AM
A little command-line trick... 🛠️ 🤓

You can use `rev` twice in order to process something from right to left. For example, in order to sort /etc/passwd by shell:

cat /etc/passwd | rev | sort | rev
November 23, 2025 at 3:14 PM
La Quadrature du Net n'est pas contente des récents articles sur GrapheneOS, et elle a bien raison ! 👿 🇫🇷
Deux articles du Parisien hier, suivis aujourd'hui d'un article du Figaro, ont lancé une offensive honteuse contre GrapheneOS, un système d'exploitation open-source pour téléphones, gratuit et accessible à tous et toutes.

archive.is/202511190825...
archive.is
November 21, 2025 at 11:08 AM
Reposted by Nicolas Grégoire
This year, I have gone back to talk at cybersecurity conferences, presenting the talk "app.alert(1) is the new alert(1)", at BSides Sofia and BSides Krakow. I have analyzed 4 CVEs: now you can find 3 PoCs in my GitHub :) because slides are cool, but code is better: github.com/luigigubello...
GitHub - luigigubello/bsides-2025: My talk "app.alert(1) is the new alert(1): PDF files as a vector to inject JavaScript code in web applications", presented at BSides Sofia 2025 and BSides Krakow 202...
My talk &quot;app.alert(1) is the new alert(1): PDF files as a vector to inject JavaScript code in web applications&quot;, presented at BSides Sofia 2025 and BSides Krakow 2025. - luigigubello/bsid...
github.com
November 10, 2025 at 9:39 AM
Reposted by Nicolas Grégoire
POV: you are a young woman celebrating a recent academic success
November 17, 2025 at 7:20 PM
Reposted by Nicolas Grégoire
November 19, 2025 at 8:13 PM
November 19, 2025 at 8:13 PM
Reposted by Nicolas Grégoire
Hoy, c'est CE SOIR à 21H !

Dernier heads-up, mettez votre meilleur rappel / mémo / réveil, ou demandez à votre chat de vous ping !

Au programme : Hack Web / Hack IoT / Devops / Troll / Stories / CLI Tools / AI / Red-Team & Le QUIZZ !

Ah, et des goodies à gagner aussi, bc why not ! 🙃
LA soirée du 200ème épisode est annoncée ! 👀
RDV ce Mardi 18 à 21h sur (oui comme d'hab en fait..) :
💌 www.twitch.tv/thelaluka 💌
November 18, 2025 at 9:22 AM
Reposted by Nicolas Grégoire
🔗 Conférence complète/Full Talk: youtu.be/pq0NMN9HHOY
🎟️ Billets/Tickets NorthSec 2026: nsec.io

#NorthSec #cybersecurity #infosec
NorthSec 2025 - Wendy Nather - Keynote: A Tabletop As Big As the World
YouTube video by NorthSec
youtu.be
November 16, 2025 at 8:48 PM
Argument injection (and RCE) in three distinct AI agents

blog.trailofbits.com/2025/10/22/p...
Prompt injection to RCE in AI agents
We bypassed human approval protections for system command execution in AI agents, achieving RCE in three agent platforms.
blog.trailofbits.com
November 16, 2025 at 3:16 AM
How the hack of a card shuffler presented at Blackhat 2023 by IOActive was used IRL by the mafia and some NBA members

archive.is/7Pm1E
archive.is
November 16, 2025 at 3:15 AM