> For the complete documentation index, see [llms.txt](https://book.onosh.ovh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.onosh.ovh/ctf.md). # CTF - [HackTheShields 2026](https://book.onosh.ovh/ctf/hacktheshields-2026.md) - [Crypto - Common Modulus Attack](https://book.onosh.ovh/ctf/hacktheshields-2026/crypto-common-modulus-attack.md) - [Forensic - L'ombre d'Orion](https://book.onosh.ovh/ctf/hacktheshields-2026/forensic-lombre-dorion.md) - [Web / Forensic - Projet Orion-Verifier](https://book.onosh.ovh/ctf/hacktheshields-2026/web-forensic-projet-orion-verifier.md) - [leHACK 2024 - Challenge DLS](https://book.onosh.ovh/ctf/lehack-2024-challenge-dls.md): Initié en 2003 par un groupe de personnes réunies sous le nom de Hackerz Voice et inspiré par le célèbre événement de hacking américain nommé DEFCON, leHACK fête ses 20 ans en 2024. - [Malizen 2023](https://book.onosh.ovh/ctf/malizen-2023.md): https://www.malizen.com - [Monkey Money​ Challenge](https://book.onosh.ovh/ctf/malizen-2023/monkey-money-challenge.md): https://app.malizen.com - [European Cyber Cup 2022](https://book.onosh.ovh/ctf/european-cyber-cup-2022.md) - [\[OT\] - Sauvez la centrale nucléaire !](https://book.onosh.ovh/ctf/european-cyber-cup-2022/ot-sauvez-la-centrale-nucleaire.md) - [CNSSIS2022](https://book.onosh.ovh/ctf/cnssis2022.md): Pour son 10ème Congrès National de la Sécurité de SI de Santé, l’APSSIS propose à ses congressistes de participer à un CTF organisé pendant l'événement. - [Rançongiciel](https://book.onosh.ovh/ctf/cnssis2022/rancongiciel.md) - [DICOM](https://book.onosh.ovh/ctf/cnssis2022/dicom.md) - [Petite frappe](https://book.onosh.ovh/ctf/cnssis2022/petite-frappe.md) - [Dropper \[.docx\]](https://book.onosh.ovh/ctf/cnssis2022/dropper-.docx.md): Comme dans de nombreuses attaques, ce fichier malicieux a été transmis dans un courriel à un utilisateur. À vous d’investiguer et de trouver le secret qu’il cache. - [Lsass](https://book.onosh.ovh/ctf/cnssis2022/lsass.md) - [Oncle Sam](https://book.onosh.ovh/ctf/cnssis2022/oncle-sam.md): Une extraction des clés de registres hklm\sam et hklm\system a été réalisée sur une machine Windows et vous est fournie. Votre mission est de retrouver le mot de passe local de l’utilisateur "apssis". - [Bad DNS](https://book.onosh.ovh/ctf/cnssis2022/bad-dns.md) - [Un attaquant sur le réseau](https://book.onosh.ovh/ctf/cnssis2022/un-attaquant-sur-le-reseau.md) - [Données de santé exposées...](https://book.onosh.ovh/ctf/cnssis2022/donnees-de-sante-exposees....md) - [Scan TLS](https://book.onosh.ovh/ctf/cnssis2022/scan-tls.md) - [BreizhCTF2022](https://book.onosh.ovh/ctf/breizhctf2022.md) - [Des deux côtés 1/2](https://book.onosh.ovh/ctf/breizhctf2022/des-deux-cotes-1-2.md) - [Des deux côtés 2/2](https://book.onosh.ovh/ctf/breizhctf2022/des-deux-cotes-2-2.md) - [European Cyber Week](https://book.onosh.ovh/ctf/european-cyber-week.md) - [Maker is dead](https://book.onosh.ovh/ctf/european-cyber-week/maker-is-dead.md) - [John Hammond](https://book.onosh.ovh/ctf/john-hammond.md) - [ESN'HACK](https://book.onosh.ovh/ctf/esnhack.md) - [EXFILTRATION 1](https://book.onosh.ovh/ctf/esnhack/exfiltration-1.md) - [EXFILTRATION 2](https://book.onosh.ovh/ctf/esnhack/exfiltration-2.md) - [France Cybersecurity Challenge](https://book.onosh.ovh/ctf/france-cybersecurity-challenge.md) - [Académie de l'investigation - C'est la rentrée](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/academie-de-linvestigation-cest-la-rentree.md) - [Académie de l'investigation - Premiers artéfacts](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/academie-de-linvestigation-premiers-artefacts.md) - [Académie de l'investigation - Porte dérobée](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/academie-de-linvestigation-porte-derobee.md) - [Académie de l'investigation - Administration](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/academie-de-linvestigation-administration.md) - [Chapardeur de mots de passe](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/chapardeur-de-mots-de-passe.md) - [Find Me](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/find-me.md) - [Cap ou pcap ?](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/cap-ou-pcap.md) - [Randomito](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/randomito.md) - [Le rat conteur](https://book.onosh.ovh/ctf/france-cybersecurity-challenge/le-rat-conteur.md) --- # Agent Instructions This documentation is published with GitBook. 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