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

Ranking

#NamePoints
1@Charo_IT4651
2@xxx7010xxx4051
3@YM_researcher4051
4@shiitakealien4051
5@fwarashi4051
6@5572BEAM4051
7@Yii034051
8@moratorium084051
9@yuyuyu_sec4051
10@goto504051
11@_wata12214051
12@mizusearchdemon4051
13@__john_4051
14@Etsukata4051
15@zdroidan4051
16@sumi0x004051
17@encry10244051
18@cookies1464051
19@npc_guru4051
20@zeosutt4051
21@kimiyuki_u4051
22@satos___jp4051
23@june_yah_4051
24@ommadawn464051
25@y_hag4051
26@Ga_ryo_4051
27@ctf_shiho4051
28@yutopp4051
29@_N4NU_4051
30@_jptomoya4051
31@r_dream04051
32@RKX12094051
33@nekonyaso4051
34@hority4051
35@Bono_iPad4051
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@int_0x103711
72@icchyr3711
73@ihijp3701
74@X154AA43691
75@gpp2563691
76@iwamura3691
77@nk0t3691
78@_naa_4f3681
79@horosora3631
80@yasulib3631
81@hhc0null3631
82@todaemon3601
83@noritama_ususio3571
84@akiym3571
85@folll__3561
86@hk10123551
87@porisuteru3551
88@ytn863551
89@bbottait3550
90@you07083531
91@yizumi1012xxx3521
92@nullpo_head3511
93@6f70_tkb3511
94@nishitsume3481
95@toyocurry3481
96@__math3461
97@nmkj_io3451
98@chenxiao073450
99@potetisensei3431
100@twhs_r3421
101@xyshiki3401
102@kumavale3401
103@010Caterpie3391
104@ysakasin3381
105@arata_nvm3381
106@yuscarlet3381
107@siam_ctf3381
108@mitsububunu3381
109@inaki_honorific3381
110@graneed1113381
111@hiro_kojima3381
112@strasp093381
113@G0G0BIKE3381
114@fjn843381
115@misodengaku3381
116@toyo_tas3371
117@ymduu3371
118@__cooper3371
119@mitt_pwn3360
120@usi_kro3341
121@zunzun_meow3331
122@kakko_jc3331
123@chorogis3331
124@superbacker3331
125@osa_k3321
126@hiromu19963301
127@0x0f343300
128@hama72303281