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HACKDAY-Qualif-2023
22 March 2023

A Starry Night Sky

[Link to challenges](https://github.com/ChallengeHackDay/2023-qualif/tree/main/OSINT/A%20starry%20night%20sky) ## ## Challenge Description ![Photo](../../../assets/CTFs/HACKDAY-Qualif-2023/A starry night sky.jpg "A starry night sky") This is an OSINT Challenge,...

OSINT
HACKDAY-Qualif-2023
22 March 2023

Astronaut's Poem

[Link to challenges](https://github.com/ChallengeHackDay/2023-qualif/tree/main/Steganography/Astronaut's%20Poem) ## ## Challenge Description ![Photo](../../../assets/CTFs/HACKDAY-Qualif-2023/astronatpoem.png "Astronat'sPoem") This is an Stegnography Challenge, in which we are given a...

Steganography
HACKDAY-Qualif-2023
22 March 2023

Chat With Me 123

Miscellaneous
HACKDAY-Qualif-2023
22 March 2023

Chunk Of Surprises

Steganography
HACKDAY-Qualif-2023
22 March 2023

Cloudy Wtmp A Chance Of Meatballs

Miscellaneous
HACKDAY-Qualif-2023
22 March 2023

Interstellar Communication Might Pause

Steganography
HACKDAY-Qualif-2023
22 March 2023

Treasure Hunt

Web
HACKDAY-Qualif-2023
22 March 2023

HACKDAY Qualif 2023

404CTF2023
06 June 2023

Avez Vous Vu Les Cascades Du Hérisson

Hardware,, Radio-fréquences
404CTF2023
06 June 2023

Ballistic Missile Submarine

## ## ## Challenge Description ![](../../../assets/CTFs/404CTF2023/radio_annonce.png) We are given a file RadioLondres which is a raw data file, and a...

Hardware,, Radio-fréquences
404CTF2023
06 June 2023

De La Poésie

AI
404CTF2023
06 June 2023

Des Mots, Des Mots, Des Mots

## ## Challenge Description ![](../../../assets/CTFs/404CTF2023/desmots_annonce.png) This is a programming challenge which requires us to write a "translator" abiding their rules....

Programmation
404CTF2023
06 June 2023

L'académie Du Détail

## ## Challenge Description ![Photo](../../../assets/CTFs/404CTF2023/annonce_academie.png "Annonce") This is a Web challenge, and this time we have a site of the...

Web, JWT
404CTF2023
06 June 2023

La Cohue

Pwn
404CTF2023
06 June 2023

La Vie Francais

## ## Challenge Description ![Photo](../../../assets/CTFs/404CTF2023/annonce_laviefrancais.png "Annonce") We have access to a website La Vie Francais (which was hinted that there...

Web, SQLi
404CTF2023
06 June 2023

Les Félicitations

## ## Challenge Description We are given a poem this time and required to find a hidden congralutation. Tous étaient...

Stegnography
404CTF2023
06 June 2023

Lettres Volatiles

## ## Challenge Description ![](../../../assets/CTFs/404CTF2023/volatiles_annonce.png) In this challenges, we are given a zip file containning a Windows home directory of...

Memory, Forensic
404CTF2023
06 June 2023

Un Vol

[Link to challenges](https://ctf.404ctf.fr/challenges#Un%20vol%20?%20-41) ## ## Challenge Description ![Photo](../../../assets/CTFs/404CTF2023/annonce_unvol.png "Annonce") This OSINT challenge requires us to find out where Arsène Lupin...

OSINT
404CTF2023
06 June 2023

404CTF2023

HackTheBox
19 June 2023

Agile

## ## Challenge Description This is a HTB Medium machine. It was exciting since this is my first medium machine...

Boot2Root, Medium, HTB
HackTheBox
19 June 2023

HackTheBox

TRACS2023
13 December 2023

Apinexicoin

## ## Challenge Description This is a Web API Challenge from the event TRACS 2023 (Tournoi de Renseignement et d'Analyse...

Web, API
Ph0wnCTF-2026-Intro
19 March 2026

Cospas Sarsat 406 Mhz Emergency Beacon

## ## Challenge Description We are given a wav file [beacon.wav](../../../\assets\CTFs\Ph0wnCTF-2026-Intro/ph0wn-beacon.wav) with a document related to [COSPAS-SARSAT-406-MHz-Emergency-Beacon](https://ntrs.nasa.gov/api/citations/19880017182/downloads/19880017182.pdf), our task is...

Signal-analysis, Material
Ph0wnCTF-2026-Intro
19 March 2026

Nmea 2000 Ballast Tank Level Monitor

# NMEA-2000 Ballast Tank Challenge - Write-up ## Challenge Overview The challenge involved connecting to a **Luxury Yacht MCP Server**...

NMEA-2000
Ph0wnCTF-2026-Intro
19 March 2026

Picolecroco

## ## Challenge Description A photo from `picolecroco` going surfing for Xmas vacation and had spiny lobster for dinner, we...

OSINT
Ph0wnCTF-2026-Intro
19 March 2026

Secret Of Pico Island

## ## Challenge Description A patched demo of "The secret of monkey island" with a description "You should play the...

Patching, Reverse
Ph0wnCTF-2026-Intro
19 March 2026

Ph0wnCTF 2026 Intro

It's been a while since the last time I update the writeups CTF. I still participate but writing all the...