| ID | Title | Author | Categories | Stars | Points | Solves |
|---|---|---|---|---|---|---|
| 02a | 已知用火 (1) / Custom Web Server (1) | Mystiz | web | ★★☆☆☆ (2) | 150 | 95 |
| 02b | 已知用火 (2) / Custom Web Server (2) | Mystiz | web | ★★★☆☆ (3) | 300 | 13 |
| 03 | 自行取旗 / Get Flag Yourself | hollow | misc | ★☆☆☆☆ (1) | 50 | 269 |
| 04a | RSA LCG (0) | Mystiz | crypto, step by step! | ★☆☆☆☆ (1) | 100 | 146 |
| 04b | RSA LCG (1) | Mystiz | crypto | ★★★☆☆ (3) | 300 | 28 |
| 04c | RSA LCG (2) | Mystiz | crypto | ★★★★☆ (4) | 400 | 15 |
| 04d | RSA LCG (3) | Mystiz | crypto | ★★☆☆☆ (2) | 200 | 18 |
| 06a | 大師的加密標準 (1)：樣本 / mAEStro (1): Sample | hoifanrd, Mystiz | crypto | ★★★☆☆ (3) | 250 | 24 |
| 06b | 大師的加密標準 (2)：洗勻 / mAEStro (2): Shuffle | Mystiz, hoifanrd | crypto | ★★★★☆ (4) | 350 | 10 |
| 08 | 新免費午餐 / New Free Lunch | GonJK | web, step by step! | ★☆☆☆☆ (1) | 100 | 587 |
| 09 | 虛空 / Void | Mystiz | reverse | ★☆☆☆☆ (1) | 100 | 147 |
| 10 | B6ACP | hollow | misc, step by step! | ★☆☆☆☆ (1) | 100 | 97 |
| 12 | Cyp.ress | Mystiz | reverse | ★★☆☆☆ (2) | 200 | 81 |
| 15 | 旗幟檢查機 / Flag Checker | viky | reverse | ★★☆☆☆ (2) | 200 | 36 |
| 16a | 米斯蒂茲的迷你 CTF (1) / Mystiz's Mini CTF (1) | Mystiz | web | ★★☆☆☆ (2) | 200 | 48 |
| 16b | 米斯蒂茲的迷你 CTF (2) / Mystiz's Mini CTF (2) | Mystiz | web | ★☆☆☆☆ (1) | 100 | 72 |
| 17 | ⚡ | Mystiz | web | ★★★★★ (5) | 450 | 6 |
| 18 | 食譜 / Cook book | viky | forensic, crypto | ★★★☆☆ (3) | 250 | 50 |
| 21 | 數立僉章寅算法 / Almost DSA | Mystiz | crypto | ★☆☆☆☆ (1) | 100 | 88 |
| 22 | Bashed! | Mystiz | reverse | ★★★★★ (5) | 500 | 15 |
| 24a | 飛鴿傳書 (1) / Pigeon Post (1) | Mystiz | crypto, step by step! | ★☆☆☆☆ (1) | 100 | 126 |
| 24b | 飛鴿傳書 (2) / Pigeon Post (2) | Mystiz | crypto | ★★★☆☆ (3) | 250 | 23 |
| 25 | 奇美拉 / Chimera | hollow | web | ★★★★★ (5) | 500 | 5 |
| 26 | Black Magic | harrier | reverse | ★★★★☆ (4) | 400 | 4 |
| 28 | 炒埋一碟 / Morph | harrier | reverse | ★★★☆☆ (3) | 300 | 53 |
| 32 | 單行房間 / One Way Room | GonJK | forensic | ★★☆☆☆ (2) | 150 | 87 |
| 34 | 隱秘．隱秘．RSA / Mask-mask-RSA | Mystiz | crypto | ★★★★★ (5) | 500 | 3 |
| 37 | 簡術業餘 / Jane Streak Amateurs | Ozetta | forensic | ★★☆☆☆ (2) | 150 | 31 |
| 39 | 再一個破解挑戰 / Yet another crackme | viky | reverse, step by step! | ★☆☆☆☆ (1) | 100 | 104 |
| 40 | ISA 101 | harrier | reverse, step by step! | ★★☆☆☆ (2) | 200 | 147 |
| 41a | 圖窮匕現（一）：頭頭是道 / Crack the Pack (Ⅰ): Head and Shoulders | TWY | misc, crypto | ★★☆☆☆ (2) | 200 | 20 |
| 41b | 圖窮匕現（二）：娓娓道來 / Crack the Pack (Ⅱ): Knees and Toes | TWY | misc, crypto | ★★★★☆ (4) | 375 | 9 |
| 42 | 音感的挑戰 / Hearing Check | TWY | misc, forensic | ★☆☆☆☆ (1) | 100 | 43 |
| 43 | MBTI 探測儀 / MBTI Radar | TWY | reverse, crypto | ★★★★★ (5) | 500 | 13 |
| 47 | 我可愛的貓咪 / My Lovely Cats | apple | misc, reverse | ★★☆☆☆ (2) | 200 | 62 |
| 48 | Scratch ERCode | apple | misc | ★★☆☆☆ (2) | 200 | 50 |
| 49 | Shellcode 運行器 3 / Shellcode Runner 3 | botton | pwn | ★★★☆☆ (3) | 300 | 8 |
| 49b | Shellcode 運行器 3 復仇 / Shellcode Runner 3 Revenge | botton | pwn | ★★★☆☆ (3) | 150 | 23 |
| 50 | 黑色 C2 / Black C2 | botton | pwn | ★★★★☆ (4) | 400 | 4 |
| 51 | 翻轉英雄 / Flipper Hero | botton | pwn | ★★★☆☆ (3) | 250 | 10 |
| 52a | PDF 生成器（1） / Webpage to PDF (1) | apple | web, step by step! | ★★☆☆☆ (2) | 150 | 295 |
| 52b | PDF 生成器（2） / Webpage to PDF (2) | apple | web | ★★☆☆☆ (2) | 150 | 32 |
| 54 | 後序表示式計算機 / Postfix expression calculator | Cire Meat Pop | pwn | ★★★☆☆ (3) | 220 | 36 |
| 55 | 旗幟雜湊 / Flag hasher | Cire Meat Pop | pwn, step by step! | ★☆☆☆☆ (1) | 100 | 136 |
| 56 | ChatGGT (2) | Cire Meat Pop | pwn | ★★★☆☆ (3) | 230 | 19 |
| 57 | Python 小算盤 2 / Python Calculator 2 | Cire Meat Pop | misc, pwn | ★★★★☆ (4) | 400 | 10 |
| 58a | ISH (1) | Cire Meat Pop | pwn | ★★☆☆☆ (2) | 200 | 46 |
| 58b | ISH (2) | Cire Meat Pop | pwn | ★★★★☆ (4) | 350 | 13 |
| 58c | ISH (3) | Cire Meat Pop | pwn, web | ★★★★★ (5) | 500 | 10 |
| 59a | 通靈字盤 5 / Tuning Keyboard 5 | Ozetta | misc | ★★★☆☆ (3) | 255 | 5 |
| 59b | 通靈字盤 5.5 / Tuning Keyboard 5.5 | Ozetta | misc, web | ★★★★★ (5) | 444 | 3 |
| 60a | APT攻擊在哪裡 (1) / Where's the APT Attack (1) | NightSedge | forensic, step by step! | ★★☆☆☆ (2) | 150 | 167 |
| 60b | APT攻擊在哪裡 (2) / Where's the APT Attack (2) | NightSedge | forensic | ★★★★☆ (4) | 350 | 0 |
| 62 | JSPyaml | Ozetta | web | ★★★★☆ (4) | 400 | 18 |
| 63 | 嬰兒梳打餅 / Baby Cracker | harrier | reverse, step by step! | ★☆☆☆☆ (1) | 100 | 203 |
| 64 | ChatGGT (1) | Cire Meat Pop | pwn, step by step! | ★☆☆☆☆ (1) | 100 | 191 |
| 98 | 最初的挑戰 / Sanity check | Black Bauhinia | ☆☆☆☆☆ (0) | 10 | 736 | |
| 99 | 最終的挑戰 / Feedback | Black Bauhinia | ☆☆☆☆☆ (0) | 10 | 319 |
A huge shoutout to HKCERT and all the authors for sharing these challenges in this repository!
And, of course, the biggest thank you goes to all the participants, i.e. you!