SekaiCTF 2025


CTF Archive.

SekaiCTF 2025

SekaiCTF returns for its fourth edition! While the overall difficulty has been designed to suit intermediate and advanced participants, we've also included beginner-friendly tasks to ensure newer players can join in and enjoy the experience.

SekaiCTF 2025 will serve as dual prequalifier for MaltaCTF 2025 Finals and the 10th XCTF Finals.

[+] Sponsors

[+] Partners

Original Date: Sat, 16 Aug. 2025, 01:00 UTC — Mon, 18 Aug. 2025, 01:00 UTC
Original URL: https://ctf.sekai.team/
CTFtime Entry: SekaiCTF 2025
Organizing Team: Project Sekai



Challenges

I created a Web application in Flask, what could be wrong?

Author: belugagemink

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Shamir SendS the Secret to everyone

Author: Utaha

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Even so, You alone should drown in blue and vanish.

Before being consumed by those sorrow-filled eyes, divide the world by zero, humming with a hoarse voice.

The finale's sound is ringing out.

Author: kanon

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

This is a revenge challenge of fairy-ring from DiceCTF Quals 2025.

By popular vote, the best anime girl of all time is Mai from Bunny Girl Senpai, so we've included her here to give you some extra help.

Author: Neobeo, Sceleri

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

This is a revenge challenge of fairy-ring from DiceCTF Quals 2025.

Six fairies, just like the original. No more Mai to help you.

Author: Sceleri, Neobeo

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

7-Day | 30-Day | All-Time

Rank Hacker Badges Score