# 404CTF 2025

Bienvenue,\
Vous trouverez ici des writeups pour les différents challenges que j'ai pu terminer durant le CTF.\
Cette 4e édition du 404CTF aura duré du 11/05/2025 au 01/06/2025 (soit 21 jours).

:warning: Les solutions proposées ne sont pas **uniques** et reste **discutables** pour certains challenges.\
Si vous avez des remarques, que vous relevez des erreurs ou tout simplement pour discuter des writeups proposés, vous pouvez m'envoyer un message sur Discord : `Ayweth20` .

:information\_source: *(Les writeups sont en cours de rédaction pour certains et seront publiés au cours du mois)*

**Liste des challenges de l'édition 2025 :**&#x20;

#### Algorithmique Quantique (2/3)

<table><thead><tr><th width="75" align="center"> </th><th>Nom</th><th width="85" align="center">Points</th><th width="141">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Machinerie quantique</td><td align="center">100</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Grover (1/2)</td><td align="center">211</td><td><a href="/pages/g3YL2b1Cmd9FR6lLrM4t">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Grover (2/2)</td><td align="center">488</td><td>Non validé 😢</td></tr></tbody></table>

#### Analyse forensique (9/9)

<table><thead><tr><th width="75" align="center"> </th><th>Nom</th><th width="85" align="center">Points</th><th width="141">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>USB 51</td><td align="center">100</td><td><a href="/pages/ykArfllG7ur1FwvXagbL">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Forensic et Mat [1/2]</td><td align="center">100</td><td><a href="/pages/gtUMgX74PkKvJDzg2ovD">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Apprenti Carver [1/2]</td><td align="center">100</td><td><a href="/pages/FoI5VIp2FyxC6bLSIoOD">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Dockerflag</td><td align="center">100</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Forensic et Mat [2/2]</td><td align="center">100</td><td><a href="/pages/NYQSBmpSCW7geaq128BW">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Apprenti Carver [2/2]</td><td align="center">100</td><td><a href="/pages/NOw3Y0tB9s2FUNRyQSlP">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Tape ton MDP</td><td align="center">100</td><td><a href="/pages/qbkNG5IS1gd7bCLxeuCt">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Toortik Triflexation [1/2]</td><td align="center">356</td><td><a href="/pages/g5XqlMpUKu7f8H6qxi0D">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Toortik Triflexation [2/2]</td><td align="center">471</td><td><a href="/pages/sB2m8EYGzwmYcWPC9Ydm">Solution</a></td></tr></tbody></table>

#### Cryptanalyse (8/14)

<table><thead><tr><th width="75" align="center"> </th><th>Nom</th><th width="90" align="center">Points</th><th width="146">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Message lointain</td><td align="center">100</td><td><a href="/pages/bntIetqTtwoFeGMAMi1T">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Entretien galactique</td><td align="center">100</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>R1R2</td><td align="center">100</td><td><a href="/pages/GsRWKln7ZVtvUf8hTHK0">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Saturn Cipher</td><td align="center">100</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Planètes anormales</td><td align="center">211</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Spacemark</td><td align="center">244</td><td><a href="/pages/G57Yh5WXAx3fNEd4WB0z">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>You spin me round</td><td align="center">299</td><td><a href="/pages/pvmfZ4AuxpoGvHRQQatC">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Dérive dans l'espace</td><td align="center">477</td><td><a href="/pages/DzzmDvn3PZiOh4xWpnnh">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Lunette cosmico galactique</td><td align="center">404</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Entretien Galactique 2</td><td align="center">471</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Lunette cosmico galactique revanche</td><td align="center">494</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Jupiter Cipher</td><td align="center">496</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Courbe de Lancement</td><td align="center">495</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>More Space</td><td align="center">499</td><td>Non validé 😢</td></tr></tbody></table>

#### Divers (5/6)

<table><thead><tr><th width="78" align="center"> </th><th>Nom</th><th width="96" align="center">Points</th><th width="131">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Bienvenue</td><td align="center">100</td><td><a href="/pages/guGaaFA4OU3iWO9obDl7">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Pix2Num</td><td align="center">100</td><td><a href="/pages/AMKQ8WO1MkfeROMET4AV">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Politique de confidentialité</td><td align="center">100</td><td><a href="/pages/wAap7qCqTvlh0JEBGKfM">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Space Traveller</td><td align="center">100</td><td><a href="/pages/NGP2y3wlnHrC723gvC0k">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Satellisation</td><td align="center">490</td><td><a href="/pages/u7foJfT24b9l0t2UopmI">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Étoile binaire [2/2]</td><td align="center">500</td><td>Non validé 😢</td></tr></tbody></table>

#### Exploitation de binaires (4/12)

<table><thead><tr><th width="78" align="center"> </th><th width="438">Nom</th><th width="92" align="center">Points</th><th width="140">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Gorfou en danger [1/3]</td><td align="center">100</td><td><a href="/pages/RUck0TogjwTQV0m4dezn">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Gorfou en danger [2/3]</td><td align="center">100</td><td><a href="/pages/naP87RN8XfYpftlcrJo1">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Gorfou en danger [3/3]</td><td align="center">100</td><td><a href="/pages/qDjmK11K59zcUpqBE78A">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Spaaaaaaace</td><td align="center">100</td><td><a href="/pages/0YeaepmRqAnqXtyF6S4T">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>KerberINT Space Program</td><td align="center">205</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>22 bytes pour sauver l'univers</td><td align="center">366</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Bounty Machine</td><td align="center">473</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Space Odyssey</td><td align="center">489</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Solaris</td><td align="center">491</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Cosmic-Base</td><td align="center">495</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Kalaxy</td><td align="center">495</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Bokit</td><td align="center">497</td><td>Non validé 😢</td></tr></tbody></table>

#### Intelligence Artificielle (4/4)

<table><thead><tr><th width="77" align="center"> </th><th>Nom</th><th width="94">Points</th><th width="143">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Gorfoustral (1/3)</td><td>100</td><td><a href="/pages/FtWteGXNlGSxw18zCq00">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Gorfoustral (2/3)</td><td>132</td><td><a href="/pages/awtMvJtItfzjXYOCXbdi">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Gorfoustral (3/3)</td><td>269</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Du tatouage</td><td>467</td><td><a href="/pages/LAlhJbb19xPETPgK3EbW">Solution</a></td></tr></tbody></table>

#### Renseignement en sources ouvertes (11/11)

<table><thead><tr><th width="79" align="center"> </th><th width="428">Nom</th><th width="95" align="center">Points</th><th width="147">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>L'addition est salée</td><td align="center">100</td><td><a href="/pages/XQrObj2l7s4lBsUO3Zf4">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Une mission inconnue</td><td align="center">100</td><td><a href="/pages/Gsuxy7m8VRpdU7bDxElk">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Earth Attack (0/2)</td><td align="center">100</td><td><a href="/pages/0RIHaTbRTUE5ZRJUJ3Rv">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Un satellite qui vaut de l'or</td><td align="center">100</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Un peu de vacances</td><td align="center">100</td><td><a href="/pages/dL3nxHshNHQ2X83EJB0K">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>La ville en rose</td><td align="center">100</td><td><a href="/pages/fRmmAskETDlketfA8KmE">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Earth Attack (1/2)</td><td align="center">XXX</td><td><a href="/pages/ZL9COlpkCDJ2St9UyzFd">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>La tête dans les étoiles</td><td align="center">347</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>En eaux sombres</td><td align="center">464</td><td><a href="/pages/Z9ExS8vMktwXVLubCTja">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Earth Attack (2/2)</td><td align="center">400</td><td><a href="/pages/cdiSHZJgzciypNp5Tekv">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>DPOsint</td><td align="center">498</td><td><a href="/pages/oRdWU7nhAPQbXqpo0ike">Solution</a></td></tr></tbody></table>

#### Réaliste (6/6)

<table><thead><tr><th width="79.23333740234375"></th><th width="427.33331298828125">Nom</th><th width="95.13336181640625">Points</th><th>Solution</th></tr></thead><tbody><tr><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>The LDAP Chronicles</td><td>100</td><td>En cours de rédaction</td></tr><tr><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Houston, we have a problem</td><td>100</td><td>En cours de rédaction</td></tr><tr><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Named Resolve</td><td>100</td><td>En cours de rédaction</td></tr><tr><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>The AD Guardians</td><td>100</td><td>En cours de rédaction</td></tr><tr><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>The GPO Mission</td><td>100</td><td>En cours de rédaction</td></tr><tr><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Ghost Membership</td><td>100</td><td>En cours de rédaction</td></tr></tbody></table>

#### Rétro-Ingénierie (5/7)

<table><thead><tr><th width="80" align="center"> </th><th width="427">Nom</th><th width="93" align="center">Points</th><th width="150">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Cbizarre [1/2]</td><td align="center">100</td><td><a href="/pages/fqAITv2qyLgXjaVqixFF">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Cbizarre [2/2]</td><td align="center">100</td><td><a href="/pages/SuJev1i0FdcmoQcW4ev1">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Reversconstrictor</td><td align="center">100</td><td><a href="/pages/TAdlY1B9hA6qtEyMwQOC">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>3x3cut3_m3</td><td align="center">100</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Inscription</td><td align="center">304</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Étoile binaire [1/2]</td><td align="center">489</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>RFC 9452 bis: IP over Rockets with Quality of Service</td><td align="center">488</td><td>Non validé 😢</td></tr></tbody></table>

#### Sécurité matérielle (6/7)

<table><thead><tr><th width="82" align="center"> </th><th width="423">Nom</th><th width="100" align="center">Points</th><th width="143">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Trop d'IQ</td><td align="center">100</td><td><a href="/pages/uQBvOxrSABAEciV4KaTP">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Space Radio</td><td align="center">100</td><td><a href="/pages/TJDQDTYWtBtLndGYaWA2">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>R16D4</td><td align="center">100</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Comment est votre température ?</td><td align="center">100</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Code Radiospatial n°1</td><td align="center">293</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Unidentified Serial Bus [1/2]</td><td align="center">356</td><td>En cours de rédaction</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Unidentified Serial Bus [2/2]</td><td align="center">356</td><td>En cours de rédaction</td></tr></tbody></table>

#### Sécurité  Web (3/5)

<table><thead><tr><th width="81" align="center"> </th><th>Nom</th><th width="101" align="center">Points</th><th width="143">Solution</th></tr></thead><tbody><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Cheese Chess</td><td align="center">100</td><td><a href="/pages/aTvREaTBGb4t7yjF2l5S">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Rainbow Rocket</td><td align="center">100</td><td><a href="/pages/SFiffWegPefGsmWaA2us">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td>Fire Server</td><td align="center">100</td><td><a href="/pages/lLNLkWFoejdCxO9mv1lH">Solution</a></td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Sideral Noise</td><td align="center">499</td><td>Non validé 😢</td></tr><tr><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td>Space Fleet Command</td><td align="center">473</td><td>Non validé 😢</td></tr></tbody></table>


---

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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```

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