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@miracjp4481
11@10q2u4441
12@st98_4341
13@goto504131
14@xxx7010xxx4051
15@YM_researcher4051
16@shiitakealien4051
17@fwarashi4051
18@5572BEAM4051
19@yuyuyuyuyu_sec4051
20@_wata12214051
21@mizusearchdemon4051
22@__john_4051
23@Etsukata4051
24@zdroidan4051
25@sumi0x004051
26@encry10244051
27@cookies1464051
28@npc_guru4051
29@zeosutt4051
30@kimiyuki_u4051
31@satos___jp4051
32@ommadawn464051
33@y_hag4051
34@yutopp4051
35@_N4NU_4051
36@_jptomoya4051
37@r_dream04051
38@RKX12094051
39@nekonyaso4051
40@hority4051
41@bata_244051
42@shinh4051
43@kikuchan984051
44@1gaya_arisa4050
45@todaemon4031
46@miau_jp3971
47@asai_ken3911
48@lailaiskyn3900
49@meru_golang3861
50@nishitsume3831
51@black_tr10073831
52@tuz3583831
53@R_Gray_3831
54@mosaku73831
55@tleya_cat3831
56@inaz23831
57@shironoo3831
58@feffffea3831
59@otameshi613831
60@waidotto3831
61@sfzc2w3831
62@xrekkusu3831
63@shift_crops3831
64@sassa_nn3831
65@mage_18683831
66@lynn_04203830
67@sekai673821
68@yosupot3791
69@lcst_topevx3751
70@s4ik13751
71@kotarou7777753751
72@00_3751
73@dskzip3751
74@aki335243751
75@MarshMallow_sh3751
76@_193s3751
77@horosora3711
78@int_0x103711
79@icchyr3711
80@ihijp3701
81@X154AA43691
82@gpp2563691
83@iwamura3691
84@nk0t3691
85@_naa_4f3681
86@checkmatemusipa3631
87@yasulib3631
88@hhc0null3631
89@noritama_ususio3571
90@akiym3571
91@folll__3561
92@hk10123551
93@porisuteru3551
94@ytn863551
95@bbottait3550
96@you07083531
97@yizumi1012xxx3521
98@nullpo_head3511
99@6f70_tkb3511
100@siam_sec3481
101@kumavale3481
102@toyocurry3481
103@__math3461
104@nmkj_io3451
105@chenxiao073450
106@Tan909090903441
107@potetisensei3431
108@ta2048__3421
109@twhs_r3421
110@xyshiki3401
111@010Caterpie3391
112@xn16h73381
113@ysakasin3381
114@arata_nvm3381
115@yuscarlet3381
116@mitsububunu3381
117@inaki_honorific3381
118@graneed1113381
119@hiro_kojima3381
120@strasp093381
121@G0G0BIKE3381
122@fjn843381
123@misodengaku3381
124@toyo_tas3371
125@ymduu3371
126@__cooper3371
127@mitt_pwn3360
128@usi_kro3341