kaisonox/CTFs
GitHub: kaisonox/CTFs
一个网络安全竞赛（CTF）的原创题目集合与各类赛事解题 writeup 汇编，覆盖逆向工程、密码学、取证、隐写、Web 安全和云安全等方向。
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# CTFs
CTF 挑战合集——包含我为本地活动创建的挑战，以及我已解决挑战的 writeup。
## ✍️ 原创挑战
我设计并构建的挑战（包含源码和预期解法）。
### KCSC Recruitment 2023
| 挑战 | 类别 |
|---|---|
| [dynamic function](2023-KCSC-Recruitment/dynamic%20function) | rev |
| [hide and seek](2023-KCSC-Recruitment/hide%20and%20seek) | rev / malware |
| [mission impossible](2023-KCSC-Recruitment/mission%20impossible) | rev |
| [password checker](2023-KCSC-Recruitment/password%20checker) | rev |
| [two-faces](2023-KCSC-Recruitment/two-faces) | rev |
### KMACTF 2025
| 挑战 | 类别 |
|---|---|
| [chall2 (Heaven's Gate, AES, ASM)](2025-KMACTF/chall2) | rev |
| [packer](2025-KMACTF/packer) | rev |
### KMACTF 2026
## | 挑战 | 类别 |
|---|---|
| [Nono](2026-KMACTF/Nono) | rev |
## 🚩 Writeup（已解决）
### BKCTF 2023
| 挑战 | 类别 |
|---|---|
| [checker](2023-BKCTF/rev-checker.md) | rev |
| [reality](2023-BKCTF/rev-reality.md) | rev |
### CrewCTF 2024
| 挑战 | 类别 |
|---|---|
| [Ta, Jr. Skid](2024-CrewCTF/Ta%2C%20Jr.%20Skid) | rev |
### KMACTF 2024
| 挑战 | 类别 |
|---|---|
| [PUSH window, POP nothing](2024-KMACTF/PUSH%20window%2C%20POP%20nothing) | rev |
| [Simple Math](2024-KMACTF/Simple%20Math) | rev |
### Flare-On 12
| 挑战 | 类别 |
|---|---|
| [The Boss Needs Help](FlareOn-12/7_-_The_Boss_Needs_Help) | rev |
| [FlareAuthenticator](FlareOn-12/8_-_FlareAuthenticator) | rev |
| [10000](FlareOn-12/9_-_10000) | rev |
### Cyber SEA Game 2025
| 挑战 | 类别 |
|---|---|
| [C1 — Lemonade (XOR + base64 keystream)](2025-Cyber-SEA-Game/China_C1) | crypto |
| [C2 — Do You Think I'm Fragile](2025-Cyber-SEA-Game/Angola_C2_DoYouThinkImFragile) | misc |
| [C2 — Plato (stego + Vigenère)](2025-Cyber-SEA-Game/Democratic_Republic_of_the_Congo_C2_Plato) | stego |
| [C4 — csg_ctf (HTA crackme)](2025-Cyber-SEA-Game/Zambia_C4_csg_ctf) | rev / web |
| [C5 — rawbits (EM410x RFID)](2025-Cyber-SEA-Game/South_Sudan_C5_rawbits) | misc |
| [C6 — a very old odd file (Baudot/ITA2)](2025-Cyber-SEA-Game/C6_a_very_old_odd_file) | misc |
| [N1 — QR shares → SSE-C S3](2025-Cyber-SEA-Game/France_N1) | stego / web |
| [N2 — Silent Call, Loud Message](2025-Cyber-SEA-Game/Germany_N2) | forensics |
| [N4 — Betrayer (NTLMv2 capture)](2025-Cyber-SEA-Game/Switzerland_N4_betrayer) | forensics |
| [M1 — shut down the machine (cloud-init privesc)](2025-Cyber-SEA-Game/Australia_M1) | cloud |
| [R1 Q1 — Corrupted (fix PE)](2025-Cyber-SEA-Game/Saudi_Arabia/R1_Q1) | rev |
| [R2 — Packer (AES payload)](2025-Cyber-SEA-Game/Greece) | rev |
| [R3 — FakeC2 (Go implant)](2025-Cyber-SEA-Game/Sweeden_R3_FakeC2) | rev |
| [R6 — Matryoshka (PHP obfuscation)](2025-Cyber-SEA-Game/R6_matryoshka) | web / misc |
| [S3 — appended-ZIP carve](2025-Cyber-SEA-Game/Tanza_S3) | forensics |
### HackTheon Sejong 2025
| 挑战 | 类别 |
|---|---|
| [simple-drm (Tauri DRM bypass)](2025-HackTheon-Sejong/simple-drm) | rev |
| [caps-lock (NN backdoor)](2025-HackTheon-Sejong/caps-lock) | misc / ML |
| [imagenalysis](2025-HackTheon-Sejong/imagenalysis) | web / rev |
### ACS 2025（预选赛与决赛）
- [ACS 2025 — 与 KMA LightBlue 在釜山的胜利](https://kaisonox.github.io/posts/acs-2025-a-busan-victory-with-kma-lightblue/) — 完整 writeup 已发布在博客。
### ACS 2024（预选赛与决赛）
- [ACS 2024 — 与 KMA Orange 在下龙的银牌之旅](https://kaisonox.github.io/posts/acs-2024-a-silver-journey-in-ha-long-with-kma-orange/) — 完整 writeup 已发布在博客。
标签：Assetfinder, 云资产清单, 域环境安全, 安全竞赛, 密码学, 手动系统调用, 日志审计, 自动回退, 逆向工具, 逆向工程, 隐写术, 题解与挑战集