ksnctf
コンピュータセキュリティに関する問題を出題します。
各問題からFLAG_123456xyz
という形式の答え(flag)を探してください。
Twitterでログインすると、ランキングに参加できます。
ctfq.u1tramarine.blue 以外への攻撃はしないでください。
Attacks are only allowed to ctfq.u1tramarine.blue.
Problems
# | Title | Points | Winner | |
---|---|---|---|---|
1 | Test Problem | 1 | ||
2 | Easy Cipher | 50 | ||
3 | Crawling Chaos | 100 | ||
4 | Villager A | 300 | ||
5 | Onion | 70 | ||
6 | Login | 120 | ||
7 | Programming | 110 | ||
8 | Basic is secure? | 50 | ||
9 | Digest is secure! | 150 | ||
10 | #! | 20 | ||
11 | Riddle | 200 | ||
12 | Hypertext Preprocessor | 70 | ||
13 | Proverb | 70 | ||
14 | John | 60 | ||
15 | Jewel | 250 | ||
16 | Math I | 150 | ||
17 | Math II | 50 | ||
18 | USB flash drive | 80 | ||
19 | ZIP de kure | 150 | ||
20 | G00913 | 30 | ||
21 | Perfect Cipher | 200 | ||
22 | Square Cipher | 60 | ||
23 | Villager B | 450 | ||
24 | Rights out | 100 | ||
25 | Reserved | 30 | ||
26 | Sherlock Holmes | 70 | ||
27 | Lives out | 150 | ||
28 | Lo-Tech Cipher | 60 | ||
29 | Double Blind | 50 | ||
30 | Alpha Mixed Cipher | 80 | ||
31 | KanGacha | 130 | ||
32 | Simple Auth | 50 | ||
33 | HTTPS is secure. | 180 | ||
34 | Are you human? | 220 | ||
35 | Simple Auth II | 20 | ||
36 | Are you ESPer? | 120 | ||
37 | Competitive Programming | 600 | ||
38 | Canned Can Opener | 80 | ||
39 | Unknown Plaintext Attack | 250 | ||
40 | Deep Flag Network | 100 | ||
41 | Private BBS | 80 |