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@yangsu10yen5081
7@ctf_shiho4981
8@y011d44911
9@moratorium084651
10@Ga_ryo_4651
11@10q2u4621
12@meru_golang4611
13@miracjp4481
14@st98_4341
15@_jptomoya4131
16@goto504131
17@xxx7010xxx4051
18@YM_researcher4051
19@shiitakealien4051
20@fwarashi4051
21@5572BEAM4051
22@yuyuyuyuyu_sec4051
23@_wata12214051
24@mizusearchdemon4051
25@__john_4051
26@Etsukata4051
27@zdroidan4051
28@sumi0x004051
29@encry10244051
30@cookies1464051
31@npc_guru4051
32@zeosutt4051
33@kimiyuki_u4051
34@satos___jp4051
35@ommadawn464051
36@y_hag4051
37@yutopp4051
38@_N4NU_4051
39@r_dream04051
40@RKX12094051
41@nekonyaso4051
42@hority4051
43@bata_244051
44@shinh4051
45@kikuchan984051
46@1gaya_arisa4050
47@todaemon4031
48@miau_jp3971
49@asai_ken3911
50@lailaiskyn3900
51@nishitsume3831
52@black_tr10073831
53@tuz3583831
54@R_Gray_3831
55@mosaku73831
56@tleya_cat3831
57@inaz23831
58@shironoo3831
59@feffffea3831
60@otameshi613831
61@waidotto3831
62@sfzc2w3831
63@xrekkusu3831
64@shift_crops3831
65@sassa_nn3831
66@mage_18683831
67@lynn_04203830
68@sekai673821
69@yosupot3791
70@hamano3761
71@komori_pyonpyon3751
72@lcst_topevx3751
73@s4ik13751
74@kotarou7777753751
75@00_3751
76@dskzip3751
77@aki335243751
78@MarshMallow_sh3751
79@_193s3751
80@horosora3711
81@int_0x103711
82@icchyr3711
83@ihijp3701
84@X154AA43691
85@gpp2563691
86@iwamura3691
87@nk0t3691
88@_naa_4f3681
89@checkmatemusipa3631
90@yasulib3631
91@hhc0null3631
92@laplaci_an3601
93@noritama_ususio3571
94@akiym3571
95@folll__3561
96@hk10123551
97@porisuteru3551
98@ytn863551
99@bbottait3550
100@you07083531
101@yizumi1012xxx3521
102@nullpo_head3511
103@6f70_tkb3511
104@siam_sec3481
105@kumavale3481
106@toyocurry3481
107@__math3461
108@nmkj_io3451
109@chenxiao073450
110@Tan909090903441
111@potetisensei3431
112@ta2048__3421
113@twhs_r3421
114@xyshiki3401
115@010Caterpie3391
116@xn16h73381
117@ysakasin3381
118@arata_nvm3381
119@yuscarlet3381
120@mitsububunu3381
121@inaki_honorific3381
122@graneed1113381
123@hiro_kojima3381
124@strasp093381
125@G0G0BIKE3381
126@fjn843381
127@misodengaku3381
128@toyo_tas3371