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@yangsu10yen5161
2@watarucchicchi5161
3@1gy_nop5161
4@Bono_iPad5161
5@CelebLorn5161
6@june_yah_5161
7@Charo_IT5161
8@__suica_5160
9@ctf_shiho4981
10@y011d44911
11@moratorium084651
12@Ga_ryo_4651
13@10q2u4621
14@ri4zn4611
15@miracjp4481
16@st98_4341
17@kinmojr4331
18@yotsubagusa_smy4261
19@_jptomoya4131
20@goto504131
21@xxx7010xxx4051
22@YM_researcher4051
23@shiitakealien4051
24@fwarashi4051
25@5572BEAM4051
26@yuyuyuyuyu_sec4051
27@_wata12214051
28@mizusearchdemon4051
29@__john_4051
30@Etsukata4051
31@zdroidan4051
32@sumi0x004051
33@encry10244051
34@cookies1464051
35@npc_guru4051
36@zeosutt4051
37@kimiyuki_u4051
38@satos___jp4051
39@ommadawn464051
40@y_hag4051
41@yutopp4051
42@_N4NU_4051
43@r_dream04051
44@RKX12094051
45@nekonyaso4051
46@hority4051
47@bata_244051
48@shinh4051
49@kikuchan984051
50@1gaya_arisa4050
51@todaemon4031
52@miau_jp3971
53@asai_ken3911
54@lailaiskyn3900
55@laplaci_an3861
56@nishitsume3831
57@black_tr10073831
58@tuz3583831
59@R_Gray_3831
60@mosaku73831
61@tleya_cat3831
62@inaz23831
63@shironoo3831
64@feffffea3831
65@otameshi613831
66@waidotto3831
67@sfzc2w3831
68@xrekkusu3831
69@shift_crops3831
70@sassa_nn3831
71@mage_18683831
72@lynn_04203830
73@sekai673821
74@yosupot3791
75@qx0Bz9Hl3781
76@hamano3761
77@komori_pyonpyon3751
78@lcst_topevx3751
79@s4ik13751
80@kotarou7777753751
81@00_3751
82@dskzip3751
83@aki335243751
84@MarshMallow_sh3751
85@_193s3751
86@horosora3711
87@int_0x103711
88@icchyr3711
89@ihijp3701
90@X154AA43691
91@gpp2563691
92@iwamura3691
93@nk0t3691
94@_naa_4f3681
95@checkmatemusipa3631
96@yasulib3631
97@hhc0null3631
98@noritama_ususio3571
99@akiym3571
100@folll__3561
101@hk10123551
102@porisuteru3551
103@ytn863551
104@bbottait3550
105@you07083531
106@yizumi1012xxx3521
107@nullpo_head3511
108@6f70_tkb3511
109@siam_sec3481
110@kumavale3481
111@toyocurry3481
112@__math3461
113@nmkj_io3451
114@chenxiao073450
115@Tan909090903441
116@potetisensei3431
117@ta2048__3421
118@twhs_r3421
119@xyshiki3401
120@010Caterpie3391
121@xn16h73381
122@ysakasin3381
123@arata_nvm3381
124@yuscarlet3381
125@mitsububunu3381
126@inaki_honorific3381
127@graneed1113381
128@hiro_kojima3381