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
40Deep Flag Network100
41Private BBS80

Ranking

#NamePoints
1@1gy_nop5161
2@Bono_iPad5161
3@CelebLorn5161
4@june_yah_5161
5@Charo_IT5161
6@ctf_shiho4981
7@moratorium084651
8@Ga_ryo_4651
9@st98_4341
10@xxx7010xxx4051
11@YM_researcher4051
12@shiitakealien4051
13@fwarashi4051
14@5572BEAM4051
15@Yii034051
16@yuyuyuyu_sec4051
17@goto504051
18@_wata12214051
19@mizusearchdemon4051
20@__john_4051
21@Etsukata4051
22@zdroidan4051
23@sumi0x004051
24@encry10244051
25@cookies1464051
26@npc_guru4051
27@zeosutt4051
28@kimiyuki_u4051
29@satos___jp4051
30@ommadawn464051
31@y_hag4051
32@yutopp4051
33@_N4NU_4051
34@_jptomoya4051
35@r_dream04051
36@RKX12094051
37@nekonyaso4051
38@hority4051
39@bata_244051
40@shinh4051
41@kikuchan984051
42@1gaya_arisa4050
43@todaemon4031
44@miau_jp3971
45@asai_ken3911
46@lailaiskyn3900
47@black_tr10073831
48@tuz3583831
49@R_Gray_3831
50@mosaku73831
51@tleya_cat3831
52@inaz23831
53@shironoo3831
54@feffffea3831
55@otameshi613831
56@waidotto3831
57@sfzc2w3831
58@xrekkusu3831
59@shift_crops3831
60@sassa_nn3831
61@mage_18683831
62@lynn_04203830
63@sekai673821
64@miracjp3791
65@yosupot3791
66@lcst_topevx3751
67@s4ik13751
68@kotarou7777753751
69@00_3751
70@dskzip3751
71@aki335243751
72@MarshMallow_sh3751
73@_193s3751
74@int_0x103711
75@icchyr3711
76@ihijp3701
77@X154AA43691
78@gpp2563691
79@iwamura3691
80@nk0t3691
81@_naa_4f3681
82@checkmatemusipa3631
83@horosora3631
84@yasulib3631
85@hhc0null3631
86@noritama_ususio3571
87@akiym3571
88@folll__3561
89@hk10123551
90@porisuteru3551
91@ytn863551
92@bbottait3550
93@you07083531
94@yizumi1012xxx3521
95@nullpo_head3511
96@6f70_tkb3511
97@kumavale3481
98@nishitsume3481
99@toyocurry3481
100@__math3461
101@nmkj_io3451
102@chenxiao073450
103@potetisensei3431
104@twhs_r3421
105@xyshiki3401
106@010Caterpie3391
107@xn16h73381
108@ysakasin3381
109@arata_nvm3381
110@yuscarlet3381
111@siam_ctf3381
112@mitsububunu3381
113@inaki_honorific3381
114@graneed1113381
115@hiro_kojima3381
116@strasp093381
117@G0G0BIKE3381
118@fjn843381
119@misodengaku3381
120@toyo_tas3371
121@ymduu3371
122@__cooper3371
123@mitt_pwn3360
124@usi_kro3341
125@zunzun_meow3331
126@kakko_jc3331
127@chorogis3331
128@superbacker3331