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@watarucchicchi5161
2@1gy_nop5161
3@Bono_iPad5161
4@CelebLorn5161
5@june_yah_5161
6@Charo_IT5161
7@__suica_5160
8@yangsu10yen5081
9@ctf_shiho4981
10@y011d44911
11@moratorium084651
12@Ga_ryo_4651
13@10q2u4621
14@ri4zn4611
15@miracjp4481
16@st98_4341
17@kinmojr4331
18@_jptomoya4131
19@goto504131
20@xxx7010xxx4051
21@YM_researcher4051
22@shiitakealien4051
23@fwarashi4051
24@5572BEAM4051
25@yuyuyuyuyu_sec4051
26@_wata12214051
27@mizusearchdemon4051
28@__john_4051
29@Etsukata4051
30@zdroidan4051
31@sumi0x004051
32@encry10244051
33@cookies1464051
34@npc_guru4051
35@zeosutt4051
36@kimiyuki_u4051
37@satos___jp4051
38@ommadawn464051
39@y_hag4051
40@yutopp4051
41@_N4NU_4051
42@r_dream04051
43@RKX12094051
44@nekonyaso4051
45@hority4051
46@bata_244051
47@shinh4051
48@kikuchan984051
49@1gaya_arisa4050
50@todaemon4031
51@miau_jp3971
52@asai_ken3911
53@lailaiskyn3900
54@laplaci_an3861
55@nishitsume3831
56@black_tr10073831
57@tuz3583831
58@R_Gray_3831
59@mosaku73831
60@tleya_cat3831
61@inaz23831
62@shironoo3831
63@feffffea3831
64@otameshi613831
65@waidotto3831
66@sfzc2w3831
67@xrekkusu3831
68@shift_crops3831
69@sassa_nn3831
70@mage_18683831
71@lynn_04203830
72@sekai673821
73@yosupot3791
74@qx0Bz9Hl3781
75@hamano3761
76@komori_pyonpyon3751
77@lcst_topevx3751
78@s4ik13751
79@kotarou7777753751
80@00_3751
81@dskzip3751
82@aki335243751
83@MarshMallow_sh3751
84@_193s3751
85@horosora3711
86@int_0x103711
87@icchyr3711
88@ihijp3701
89@X154AA43691
90@gpp2563691
91@iwamura3691
92@nk0t3691
93@_naa_4f3681
94@checkmatemusipa3631
95@yasulib3631
96@hhc0null3631
97@noritama_ususio3571
98@akiym3571
99@folll__3561
100@hk10123551
101@porisuteru3551
102@ytn863551
103@bbottait3550
104@you07083531
105@yizumi1012xxx3521
106@nullpo_head3511
107@6f70_tkb3511
108@siam_sec3481
109@kumavale3481
110@toyocurry3481
111@__math3461
112@nmkj_io3451
113@chenxiao073450
114@Tan909090903441
115@potetisensei3431
116@ta2048__3421
117@twhs_r3421
118@xyshiki3401
119@010Caterpie3391
120@xn16h73381
121@ysakasin3381
122@arata_nvm3381
123@yuscarlet3381
124@mitsububunu3381
125@inaki_honorific3381
126@graneed1113381
127@hiro_kojima3381
128@strasp093381