This repository contains official source code and writeups for challenges from SekaiCTF 2023.
Website • Discord • Blog • Twitter • SekaiCTF 2022
| Name | Author | Difficulty | Solves |
|---|---|---|---|
| cryptoGRAPHy 1 | sahuang | Easy (1) | 76 |
| cryptoGRAPHy 2 | sahuang | Normal (2) | 55 |
| Noisy CRC | Utaha | Hard (3) | 49 |
| cryptoGRAPHy 3 | sahuang | Expert (4) | 31 |
| Diffecientwo | deut-erium | Expert (4) | 13 |
| Noisier CRC | Utaha | Expert (4) | 8 |
| RandSubWare | deut-erium | Master (5) | 6 |
| Name | Author | Difficulty | Solves |
|---|---|---|---|
| Eval Me | Guesslemonger | Easy (1) | 303 |
| DEF CON Invitation | sahuang | Normal (2) | 148 |
| Infected | Legoclones | Hard (3) | 80 |
| Dumpster Dive | Guesslemonger | Hard (3) | 26 |
| Name | Author | Difficulty | Solves |
|---|---|---|---|
| I love this world | pamLELcu | Easy (1) | 166 |
| QR God | Guesslemonger | Normal (2) | 13 |
| A letter from the HRM | pamLELcu | Hard (3) | 44 |
| SSH | hfz | Hard (3) | 18 |
| [Blockchain] Re-Remix | Yanhui | Hard (3) | 9 |
| [Blockchain] Play for Free | Yanhui | Expert (4) | 7 |
| SekaiCTFCorp | irogir | Expert (4) | 4 |
| Just Another Pickle Jail | Quasar | Master (5) | 5 |
| Name | Author | Difficulty | Solves |
|---|---|---|---|
| Wiki Game | sahuang | Easy (1) | 284 |
| Purple Sheep Apple Rush | Lior | Hard (3) | 35 |
| Mikusweeper | sahuang, pamLELcu | Hard (3) | 50 |
| Project Sekai Event Planner | SEEM, sahuang | Master (5) | 2 |
| Name | Author | Difficulty | Solves |
|---|---|---|---|
| Cosmic Ray | Rench | Easy (1) | 149 |
| Network Tools | Johnathan | Normal (2) | 110 |
| Text Sender | Johnathan | Hard (3) | 31 |
| Algorithm Multitool | Zafirr | Expert (4) | 2 |
| Hibana | nyancat0131 | Expert (4) | 0 |
| Notification | Piers | Expert (4) | 1 |
| [Blockchain] The Bidding | Triacontakai | Master (5) | 7 |
| Name | Author | Difficulty | Solves |
|---|---|---|---|
| Azusawa’s Gacha World | enscribe | Easy (1) | 250 |
| Guardians of the Kernel | Iy3dMejri | Normal (2) | 93 |
| Teyvat Travel Guide | sahuang | Hard (3) | 31 |
| Sahuang Flag Checker | Iy3dMejri | Expert (4) | 13 |
| Conquest of Camelot | sahuang | Expert (4) | 10 |
| Name | Author | Difficulty | Solves |
|---|---|---|---|
| Scanner Service | irogir | Easy (1) | 146 |
| Frog-WAF | irogir | Hard (3) | 29 |
| Chunky | rik | Hard (3) | 16 |
| Golf Jail | Strellic | Expert (4) | 16 |
| Leakless Note | Strellic | Master (5) | 4 |
Any program and/or source code in this repository is licensed under the GNU Affero General Public License version 3:
SEKAI CTF 2023 Challenges and Solutions
Copyright (C) 2023 Project SEKAI CTF team and contributorsThis program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.
Any non-code/program content (writeups, READMEs, descriptions) in this repository is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0):
SEKAI CTF 2023 Challenges and Solutions by Project SEKAI CTF team and contributors is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.