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@lcst_topevx3751
71@s4ik13751
72@kotarou7777753751
73@00_3751
74@dskzip3751
75@aki335243751
76@MarshMallow_sh3751
77@_193s3751
78@horosora3711
79@int_0x103711
80@icchyr3711
81@ihijp3701
82@X154AA43691
83@gpp2563691
84@iwamura3691
85@nk0t3691
86@_naa_4f3681
87@checkmatemusipa3631
88@yasulib3631
89@hhc0null3631
90@noritama_ususio3571
91@akiym3571
92@folll__3561
93@hk10123551
94@porisuteru3551
95@ytn863551
96@bbottait3550
97@you07083531
98@yizumi1012xxx3521
99@nullpo_head3511
100@6f70_tkb3511
101@siam_sec3481
102@kumavale3481
103@toyocurry3481
104@__math3461
105@nmkj_io3451
106@chenxiao073450
107@Tan909090903441
108@potetisensei3431
109@ta2048__3421
110@twhs_r3421
111@xyshiki3401
112@010Caterpie3391
113@xn16h73381
114@ysakasin3381
115@arata_nvm3381
116@yuscarlet3381
117@mitsububunu3381
118@inaki_honorific3381
119@graneed1113381
120@hiro_kojima3381
121@strasp093381
122@G0G0BIKE3381
123@fjn843381
124@misodengaku3381
125@toyo_tas3371
126@ymduu3371
127@__cooper3371
128@mitt_pwn3360