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.
Discord: https://discord.gg/6gk7jhCgGX
[+] Prize Pool ・USD $10,000 in cash and over $15,000 worth of prizes ・The top two teams will earn qualification for the following onsite events: ・The 10th XCTF Finals in China (2026): https://adworld.xctf.org.cn/ ・The inaugural MaltaCTF Finals in Valletta, Malta (2025): https://2025.ctf.mt/ ※ The first-place team may choose their preferred event; second-place team will qualify for the other. XCTF Finals covers full flights and accommodation; MaltaCTF Finals covers €450 per person for flights and full accommodation.
[+] Sponsors ・OtterSec (https://osec.io/) ・Zellic (https://www.zellic.io/) ・Trail of Bits (https://www.trailofbits.com/) ・Sec3 (https://www.sec3.dev/) ・Vector 35 / Binary Ninja (https://binary.ninja/) ・Hack The Box (https://www.hackthebox.com/)
[+] Partners ・Google Cloud (https://cloud.google.com/) ・XCTF League ・Friendly Maltese Citizens
Web 7
| Challenge | Has |
|---|---|
| Captivating_Canvas_Contraption | files wu 1 |
| Fancy_Web | files |
| My_Flask_App | files |
| Notebook_Viewer | files |
| hqli_me | files |
| rednote | files |
| vite | files |
Pwn 6
| Challenge | Has |
|---|---|
| Learning_OOP | files wu 1 |
| Outdated | files |
| Umiyuri_Kaikeitan | files |
| WIC | files |
| speedpwn_2 | files |
| vkfs | files |
Reverse 6
| Challenge | Has |
|---|---|
| Alchemy_Master | files |
| Gondola | files wu 1 |
| Miku_Music_Machine | files |
| Sekai_Bank_Signature | files |
| What_in_Ternation | files |
| sekai_craft | files |
Crypto 7
| Challenge | Has |
|---|---|
| APES | files |
| Alter_Ego | files src wu 1 |
| I_Dream_of_Genni | files |
| Law_And_Order | files |
| SSSS | files src |
| unfairy_ring | files src |
| unfairy-ring++ | files src |
Misc 6
| Challenge | Has |
|---|---|
| Discrepancy | files |
| Literal_Eval | files |
| Sekai_Bank_Transaction | files |
| Nokotans_Antler_Tines | files |
| Nokotans_Arcade | files |
| Nokotans_Guidance | files |
Blockchain 4
| Challenge | Has |
|---|---|
| Sekai_Lending | files |
| Sekai_Meme_Launcher | files |
| Stray_Cat | files |
| Ticketmaster | files |