SekaiCTF 2026
SekaiCTF returns for its fifth edition! A battle between human and AI. Categories include Web, Reverse, Pwn, Cryptography, Misc, Blockchain, and Game.
SekaiCTF 2026 will serve as the 11th XCTF Finals pre-qualifier.
Discord: https://discord.gg/6gk7jhCgGX
Sponsors ・Zellic (https://www.zellic.io/) ・OtterSec (https://osec.io/) ・Trail of Bits (https://www.trailofbits.com/) ・Vector 35 / Binary Ninja (https://binary.ninja/)
Partners ・Google Cloud (https://cloud.google.com/) ・XCTF League
Web 4
| Challenge | Has |
|---|---|
| EnD | files |
| Filtered_Reality | files |
| Migurimental | files wu 1 |
| less_than_w_plus | files |
Pwn 5
| Challenge | Has |
|---|---|
| 3in1 | files |
| MTE | files |
| echo_chamber | files |
| ppp | files wu 1 |
| pwnable_document_fabricator | files |
Reverse 2
| Challenge | Has |
|---|---|
| Chibile | files |
| Untitled_Encore | files wu 1 |
Crypto 5
| Challenge | Has |
|---|---|
| Iihash | files |
| apbq_rsa_iv | files |
| needLe_in_a_multivariate_sekai | files |
| oneline6ryp7o | files wu 1 |
| orbital_strike | files |
Misc 7
| Challenge | Has |
|---|---|
| Minions_in_16k | files |
| SekaiID | files wu 1 |
| deadgame2 | files |
| impossible_stego | files wu 1 |
| pokemon_park | files |
| pokemon_park_revenge | files |
| ufo | files |
Blockchain 4
| Challenge | Has |
|---|---|
| Open_World | files wu 1 |
| Outer_Stellar | files |
| PP_Farming | files wu 1 |
| PP_Farming_2 | files wu 1 |