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

#TitlePointsWinner
1Test Problem1
2Easy Cipher50
3Crawling Chaos100
4Villager A300
5Onion70
6Login120
7Programming110
8Basic is secure?50
9Digest is secure!150
10#!20
11Riddle200
12Hypertext Preprocessor70
13Proverb70
14John60
15Jewel250
16Math I150
17Math II50
18USB flash drive80
19ZIP de kure150
20G0091330
21Perfect Cipher200
22Square Cipher60
23Villager B450
24Rights out100
25Reserved30
26Sherlock Holmes70
27Lives out150
28Lo-Tech Cipher60
29Double Blind50
30Alpha Mixed Cipher80
31KanGacha130
32Simple Auth50
33HTTPS is secure.180
34Are you human?220
35Simple Auth II20
36Are you ESPer?120
37Competitive Programming600
38Canned Can Opener80
39Unknown Plaintext Attack250

Ranking

#NamePoints
1@Bono_iPad4981
2@ctf_shiho4981
3@june_yah_4981
4@Charo_IT4981
5@moratorium084651
6@Ga_ryo_4651
7@xxx7010xxx4051
8@YM_researcher4051
9@shiitakealien4051
10@fwarashi4051
11@5572BEAM4051
12@Yii034051
13@yuyuyu_sec4051
14@goto504051
15@_wata12214051
16@mizusearchdemon4051
17@__john_4051
18@Etsukata4051
19@zdroidan4051
20@sumi0x004051
21@encry10244051
22@cookies1464051
23@npc_guru4051
24@zeosutt4051
25@kimiyuki_u4051
26@satos___jp4051
27@ommadawn464051
28@y_hag4051
29@yutopp4051
30@_N4NU_4051
31@_jptomoya4051
32@r_dream04051
33@RKX12094051
34@nekonyaso4051
35@hority4051
36@bata_244051
37@shinh4051
38@kikuchan984051
39@1gaya_arisa4050
40@miau_jp3971
41@asai_ken3911
42@lailaiskyn3900
43@black_tr10073831
44@tuz3583831
45@R_Gray_3831
46@mosaku73831
47@tleya_cat3831
48@inaz23831
49@shironoo3831
50@feffffea3831
51@otameshi613831
52@waidotto3831
53@sfzc2w3831
54@xrekkusu3831
55@shift_crops3831
56@st98_3831
57@sassa_nn3831
58@mage_18683831
59@lynn_04203830
60@sekai673821
61@miracjp3791
62@yosupot3791
63@lcst_topevx3751
64@s4ik13751
65@kotarou7777753751
66@00_3751
67@dskzip3751
68@aki335243751
69@MarshMallow_sh3751
70@_193s3751
71@CelebLorn3711
72@int_0x103711
73@icchyr3711
74@ihijp3701
75@X154AA43691
76@gpp2563691
77@iwamura3691
78@nk0t3691
79@_naa_4f3681
80@checkmatemusipa3631
81@horosora3631
82@yasulib3631
83@hhc0null3631
84@todaemon3601
85@noritama_ususio3571
86@akiym3571
87@folll__3561
88@hk10123551
89@porisuteru3551
90@ytn863551
91@bbottait3550
92@you07083531
93@yizumi1012xxx3521
94@nullpo_head3511
95@6f70_tkb3511
96@kumavale3481
97@nishitsume3481
98@toyocurry3481
99@__math3461
100@nmkj_io3451
101@chenxiao073450
102@potetisensei3431
103@twhs_r3421
104@xyshiki3401
105@010Caterpie3391
106@xn16h73381
107@ysakasin3381
108@arata_nvm3381
109@yuscarlet3381
110@siam_ctf3381
111@mitsububunu3381
112@inaki_honorific3381
113@graneed1113381
114@hiro_kojima3381
115@strasp093381
116@G0G0BIKE3381
117@fjn843381
118@misodengaku3381
119@toyo_tas3371
120@ymduu3371
121@__cooper3371
122@mitt_pwn3360
123@usi_kro3341
124@zunzun_meow3331
125@kakko_jc3331
126@chorogis3331
127@superbacker3331
128@osa_k3321