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@y011d44911
8@moratorium084651
9@Ga_ryo_4651
10@st98_4341
11@miracjp4321
12@xxx7010xxx4051
13@YM_researcher4051
14@shiitakealien4051
15@fwarashi4051
16@5572BEAM4051
17@yuyuyuyuyu_sec4051
18@goto504051
19@_wata12214051
20@mizusearchdemon4051
21@__john_4051
22@Etsukata4051
23@zdroidan4051
24@sumi0x004051
25@encry10244051
26@cookies1464051
27@npc_guru4051
28@zeosutt4051
29@kimiyuki_u4051
30@satos___jp4051
31@ommadawn464051
32@y_hag4051
33@yutopp4051
34@_N4NU_4051
35@_jptomoya4051
36@r_dream04051
37@RKX12094051
38@nekonyaso4051
39@hority4051
40@bata_244051
41@shinh4051
42@kikuchan984051
43@1gaya_arisa4050
44@todaemon4031
45@miau_jp3971
46@asai_ken3911
47@lailaiskyn3900
48@nishitsume3831
49@black_tr10073831
50@tuz3583831
51@R_Gray_3831
52@mosaku73831
53@tleya_cat3831
54@inaz23831
55@shironoo3831
56@feffffea3831
57@otameshi613831
58@waidotto3831
59@sfzc2w3831
60@xrekkusu3831
61@shift_crops3831
62@sassa_nn3831
63@mage_18683831
64@lynn_04203830
65@sekai673821
66@yosupot3791
67@lcst_topevx3751
68@s4ik13751
69@kotarou7777753751
70@00_3751
71@dskzip3751
72@aki335243751
73@MarshMallow_sh3751
74@_193s3751
75@horosora3711
76@int_0x103711
77@icchyr3711
78@ihijp3701
79@X154AA43691
80@gpp2563691
81@iwamura3691
82@nk0t3691
83@_naa_4f3681
84@checkmatemusipa3631
85@yasulib3631
86@hhc0null3631
87@noritama_ususio3571
88@akiym3571
89@folll__3561
90@hk10123551
91@porisuteru3551
92@ytn863551
93@bbottait3550
94@you07083531
95@yizumi1012xxx3521
96@nullpo_head3511
97@6f70_tkb3511
98@siam_sec3481
99@kumavale3481
100@toyocurry3481
101@__math3461
102@nmkj_io3451
103@chenxiao073450
104@Tan909090903441
105@potetisensei3431
106@twhs_r3421
107@xyshiki3401
108@010Caterpie3391
109@xn16h73381
110@ysakasin3381
111@arata_nvm3381
112@yuscarlet3381
113@mitsububunu3381
114@inaki_honorific3381
115@graneed1113381
116@hiro_kojima3381
117@strasp093381
118@G0G0BIKE3381
119@fjn843381
120@misodengaku3381
121@toyo_tas3371
122@ymduu3371
123@__cooper3371
124@mitt_pwn3360
125@usi_kro3341
126@zunzun_meow3331
127@kakko_jc3331
128@chorogis3331