Fri, 19 May 2023, 14:00 UTC — Sun, 21 May 2023, 14:00 UTC 

On-line

Grey Cat The Flag event.

Format: Jeopardy Jeopardy

Official URL: https://ctfd.nusgreyhats.org/

This event's future weight is subject of public voting!

Future weight: 23.65 

Rating weight: 23.65 

Event organizers 

Grey Cat The Flag is a jeopardy-style CTF organized by NUS Greyhats (https://nusgreyhats.org/) and National Cybersecurity R&D Labs (https://ncl.sg/).

We will host the onsite finals at the National University of Singapore (NUS), to which the top 5 international teams and the top 10 Singapore teams from the qualifiers will be invited. Each team may send up to 6 people for the finals, and accommodation in Singapore will be provided for the international teams.

Finals Date: 15 - 16 July SGT

Discord Server: https://discord.gg/d9wbXEP2wN

Sponsor: Cyber Security Agency of Singapore

Prizes

Finals

1st place - 6000 SGD
2nd place - 4200 SGD
3rd place - 2400 SGD

Scoreboard

454 teams total

PlaceTeamCTF pointsRating points
1 DiceGang 6612.00047.300
2 idek 6612.00035.475
3 PwN3v3rY7h1nG 6612.00031.533
4 u0K++ 6612.00029.563
5 r3kapig 6612.00028.380
6 Zer0Tolerance 6612.00027.592
7 504_Veterans 6612.00027.029
8 Social Engineering Xperts 6118.00024.839
9 NUSHmallows 5243.00021.381
10 PissedEmu 5204.00020.979
11 796f75 5189.00020.710
12 polygl0ts 4776.00019.054
13 thehackerscrew 4729.00018.734
14 ./Vespiary 4307.00017.095
15 kalmarunionen 4172.00016.499
16 Mitsutaki 3975.00015.696
17 The Council of Sheep 3932.00015.455
18 ItzyBitzySpider 3870.00015.156
19 team7 3715.00014.533
20 CLB ATTT HCMUT 3379.00013.269
21 Black Bauhinia 3362.00013.151
22 b01lers 3141.00012.310
23 FluxFingers 2816.00011.101
24 🦈 SLIGHT_SHARK 🙂 2672.00010.543
25 /bad 2599.00010.242
26 IQ-toppene 2294.0009.115
27 Penguin 2177.0008.663
28 bi0s 2113.0008.402
29 msg youtiao 1990.0007.933
30 ret2school 1926.0007.677
31 team1 1901.0007.562
32 CVEHunters2009 1888.0007.492
33 xXxpassword123xXx 1875.0007.423
34 Six Boys Cry 1866.0007.370
35 KCSC 1778.0007.035
36 team berries 1712.0006.780
37 VMP 1645.0006.523
38 LosFuzzys 1636.0006.474
39 MATE 1613.0006.376
40 A.k.a.t.s.u.k.i 1504.0005.971
41 CreateRemoteThread 1469.0005.831
42 鸡饭GPA 1450.0005.749
43 Slug Security 1386.0005.507
44 『  』 1317.0005.248
45 squarey-eggs 1260.0005.032
46 rwandi 1240.0004.949
47 FoundSatis 1190.0004.760
48 duckrice404 1182.0004.721
49 1140.0004.560
50 Tower of Hanoi 1127.0004.504
51 havce 1105.0004.416
52 aku punya combat power 5 juta 1054.0004.225
53 die_trying 1030.0004.130
54 m1t0 1021.0004.090
55 Green Onions 1017.0004.068
56 M53 1014.0004.049
57 InfoSecIITR 1014.0004.042
58 Uwuua ogqyogqyu 1010.0004.020
59 Trustable 980.0003.906
60 JHDiscord 980.0003.899
61 Sector Z 955.0003.804
62 garglemyballs 882.0003.536
63 mikoan 840.0003.380
64 PowerPoint Warriors 824.0003.317
65 f(x) 712.0002.911
66 lostkids 700.0002.862
67 AcerNitro5 655.0002.696
68 fish 650.0002.673
69 zst 650.0002.668
70 nekochan 630.0002.591
71 16j 617.0002.540
72 Rubi di Cubrik 604.0002.489
73 italeek 602.0002.477
74 Cool Team 600.0002.466
75 ns4style 580.0002.390
76 BUFFPHROGGY 562.0002.321
77 PurpleBeta 552.0002.282
78 alert(69); 552.0002.278
79 0ops 550.0002.267
80 HPN 550.0002.263
81 frog<3 550.0002.259
82 COMPASS 550.0002.256
83 user202729 is not participating 504.0002.088
84 BIT CRIMINALS 500.0002.070
85 ping 192.168.30.256 500.0002.067
86 Oi Shoeske 500.0002.063
87 sharker 500.0002.060
88 team4238 500.0002.057
89 cryptpro 500.0002.054
90 sg17025 500.0002.051
91 d0UBleW 500.0002.048
92 F0und 454.0001.881
93 robot 450.0001.864
94 BocilSerodot 450.0001.861
95 pwnstars 450.0001.859
96 Spawn Point 450.0001.856
97 red.flags 450.0001.853
98 0x41414141 450.0001.851
99 Mazala 450.0001.848
100 Duck Dynasty 450.0001.846
101 Garu 07 Hackers 450.0001.844
102 MARK 421.0001.738
103 Unknown 402.0001.667
104 whoami 400.0001.658
105 greenhat 400.0001.656
106 REDACTED 400.0001.654
107 zacaifan 400.0001.652
108 Th3 Blu3 T3am 400.0001.650
109 n00bp 400.0001.648
110 Gregasaurians 400.0001.646
111 G-Vi.kings 400.0001.644
112 Big Brain Club 400.0001.642
113 bobob 400.0001.640
114 TCP1P 400.0001.638
115 noraneco 400.0001.636
116 stone 368.0001.520
117 SkyP4rad0x 350.0001.454
118 unpatched 350.0001.452
119 plsplspls 350.0001.451
120 FR13NDS TEAM 350.0001.449
121 Working From Home 350.0001.447
122 Heike 350.0001.446
123 Brainstorm Brigade 350.0001.444
124 Bolosses avec trois s 350.0001.443
125 skyepodium 350.0001.441
126 My Little Trojan 350.0001.440
127 ATLAS 350.0001.438
128 Archive 302.0001.265
129 Flag Temp 300.0001.256
130 deadlock breakfast 300.0001.255
131 0nePadding 300.0001.254
132 t1_vo_dich 300.0001.252
133 AM0GU5 300.0001.251
134 BooYah! 300.0001.250
135 QzSG 300.0001.248
136 HexCore 300.0001.247
137 sHrACK 300.0001.246
138 Nijika 300.0001.244
139 Perkutut 300.0001.243
140 idk 300.0001.242
141 J4ckP0t 300.0001.241
142 killswitch 300.0001.240
143 Ixbixbam 300.0001.238
144 CactusTeam 300.0001.237
145 LTA 300.0001.236
146 kirbbcutiepie 300.0001.235
147 KEYBOARD_WARRIORS 300.0001.234
148 Malware 252.0001.061
149 Javelin 252.0001.060
150 CDETY 250.0001.052
151 babyshark 250.0001.051
152 A7k 250.0001.050
153 Hansecurity 250.0001.049
154 ayaya 250.0001.048
155 klw58009 250.0001.047
156 lr 250.0001.046
157 int main() 250.0001.045
158 Snooze 250.0001.044
159 ItayB 250.0001.043
160 ckc9759 250.0001.042
161 Cat Detectives 250.0001.041
162 GameStonk 250.0001.040
163 EchoSec 250.0001.039
164 phis1Ng_ 250.0001.038
165 archlinux 250.0001.038
166 IH 250.0001.037
167 bacon2 250.0001.036
168 Hehexd 250.0001.035
169 lackingfacialtissue 250.0001.034
170 m3m3nt0m0r1 250.0001.033
171 Terminal Titans 250.0001.033
172 JSoyke 250.0001.032
173 Crypt3x 250.0001.031
174 Upsize 200.0000.851
175 inotsmort 200.0000.851
176 Revenger 200.0000.850
177 BackMoon 200.0000.849
178 Martial_Law_Enforcer 200.0000.848
179 Aloha Snackbar 200.0000.847
180 Imposter detection squad 200.0000.847
181 Ansibles 200.0000.846
182 HackerMen 200.0000.845
183 hyperjacked 200.0000.845
184 Shady Guys 200.0000.844
185 Coucou 200.0000.843
186 codebreakers 200.0000.843
187 g00fy_ahh 200.0000.842
188 Dot Slashes 200.0000.841
189 justforfun 200.0000.840
190 Tempura 200.0000.840
191 ZiggTeam 200.0000.839
192 aoma 200.0000.839
193 CRMA Cyber Club 200.0000.838
194 bendasnake 200.0000.837
195 Xi Jinping 200.0000.837
196 bufferoverflo 200.0000.836
197 BabyChicken 200.0000.835
198 G01D D1GG3RS 200.0000.835
199 lingfeng 200.0000.834
200 Farming Simulator Nextgen 200.0000.834
201 posix 200.0000.833
202 pwoofy 200.0000.832
203 PearlSky 200.0000.832
204 CTFStrikers 200.0000.831
205 Croissant 200.0000.831
206 Alexius 150.0000.651
207 Imagine Losing 150.0000.651
208 gua_9_Arctic 150.0000.650
209 SKARPION 150.0000.650
210 TEAM 150.0000.649
211 ze2 150.0000.649
212 WE12h4v3Fun 150.0000.648
213 CLPWN 150.0000.648
214 new_to_ctf 150.0000.647
215 bunbohue 150.0000.647
216 Invaders0x1 150.0000.646
217 aixy 150.0000.646
218 Audax Invictus 150.0000.645
219 DarkArmy TH 150.0000.645
220 Hackurr 150.0000.644
221 CBL 150.0000.644
222 HEHEHE 150.0000.643
223 T4n_M1nh 150.0000.643
224 l0$er$ 150.0000.642
225 CSX<? extends Suffering> 150.0000.642
226 CyberSpace 150.0000.641
227 Drasnoozers 150.0000.641
228 team name 150.0000.640
229 Clown Central Singapore 150.0000.640
230 EvilBunnyWrote 150.0000.639
231 n0n 150.0000.639
232 N07_4n_4dM1N 150.0000.638
233 Big Dick Energy 150.0000.638
234 Slab Allocator 150.0000.638
235 ice-cream truck 150.0000.637
236 şırdan 150.0000.637
237 Densan 150.0000.636
238 MamakStall 150.0000.636
239 CyberSecurity Club at SFSU 150.0000.635
240 enryu ganteng 150.0000.635
241 shadow aperture 150.0000.635
242 Last Place 150.0000.634
243 turtl3 150.0000.634
244 TakeOutYey 150.0000.633
245 xon1l 150.0000.633
246 PatH F1nd3rs 150.0000.633
247 misha 150.0000.632
248 BOLEEEH 150.0000.632
249 Friendsics 150.0000.632
250 painpeko 150.0000.631
251 hakid29 150.0000.631
252 Team Kakashi 150.0000.630
253 Under_DogsCTF 150.0000.630
254 Redhats 150.0000.630
255 kennat 150.0000.629
256 CryptoCrackers 150.0000.629
257 Japending 150.0000.629
258 13:49 150.0000.628
259 op 150.0000.628
260 manhwa 150.0000.627
261 Madoka 150.0000.627
262 Ph0en1x_Team 150.0000.627
263 jalynk23 150.0000.626
264 FF15 150.0000.626
265 HelloThere 150.0000.626
266 TUAS 150.0000.625
267 sha007 150.0000.625
268 r 150.0000.625
269 fzhshzh 150.0000.624
270 qqew 100.0000.445
271 PlayerTeam 100.0000.445
272 RVCTF sk1ll 155u3 100.0000.445
273 johntheripper 100.0000.444
274 SHA-272 100.0000.444
275 Ko 100.0000.444
276 n0m3rcy[KNU] 100.0000.443
277 hehe 100.0000.443
278 ferr0 100.0000.443
279 FlagMotori 100.0000.442
280 Grofi’Hack 100.0000.442
281 Cy83r_Cru54d3r5 100.0000.442
282 TeamNameIsOkay 100.0000.442
283 Spycio.Kon-Team 100.0000.441
284 What are you doing in my swamp? 100.0000.441
285 mikejam 100.0000.441
286 LYX 100.0000.440
287 neil 100.0000.440
288 Atlas Cyber 100.0000.440
289 here4fan 100.0000.440
290 head /dev/urandom | base64 -w0 | cowsay 100.0000.439
291 haha 100.0000.439
292 Hecate 100.0000.439
293 stalk 100.0000.438
294 10 100.0000.438
295 test123777 100.0000.438
296 Team Strawberry 100.0000.438
297 ClownNation 100.0000.437
298 ✈️ 100.0000.437
299 K4mN1 100.0000.437
300 qq_crew 100.0000.437
301 froste09 100.0000.436
302 OutSaneArmy 100.0000.436
303 tastyfrenchtoast 100.0000.436
304 TakeOff 100.0000.435
305 G1tc_Gu4rdians 100.0000.435
306 YCF 100.0000.435
307 KXTI_Shara 100.0000.435
308 socialcredit 100.0000.434
309 Ireland without the RE 100.0000.434
310 hackuaz 100.0000.434
311 StrixGoldhorn 100.0000.434
312 TopBins 100.0000.433
313 ZoomerZ 100.0000.433
314 D4ck3n 100.0000.433
315 csw 100.0000.433
316 #! 100.0000.433
317 sf_1emd 100.0000.432
318 7071 100.0000.432
319 P1R473 100.0000.432
320 ABCDenialE 100.0000.432
321 DucksSayWhat 100.0000.431
322 Ucha_CTF 100.0000.431
323 3sadman 100.0000.431
324 xbjhlatdoxHDIUSTAd 100.0000.431
325 StackUnderflow 100.0000.430
326 MJX 100.0000.430
327 ForFun 100.0000.430
328 sgwr 100.0000.430
329 kjiel 100.0000.430
330 0nly^y0u 100.0000.429
331 Yowai Mo 100.0000.429
332 sannax 100.0000.429
333 SU 0A64 100.0000.429
334 The Guardian 100.0000.428
335 idk-wh0am1 100.0000.428
336 forfun0101 100.0000.428
337 UofTCTF 100.0000.428
338 spaghet 100.0000.428
339 BuGErr0rJubJub 100.0000.427
340 idfk 100.0000.427
341 teamo1 100.0000.427
342 PuPu Team 100.0000.427
343 cyberTrooper 100.0000.427
344 teamgrunt 100.0000.426
345 JustRun 100.0000.426
346 Soloqoo 100.0000.426
347 :tf: 100.0000.426
348 p3nt4g0n 100.0000.426
349 [email protected] 100.0000.425
350 SecurityFirst0 100.0000.425
351 halston 100.0000.425
352 iwan 100.0000.425
353 zeromarea 100.0000.425
354 empty 100.0000.424
355 maen 100.0000.424
356 pinkpong 100.0000.424
357 korea99 100.0000.424
358 lastdance 100.0000.424
359 Do_I_Know_You? 100.0000.424
360 XTruffle 50.0000.245
361 Pakekoding 50.0000.244
362 loawi 50.0000.244
363 C0Bra 50.0000.244
364 puf61379 50.0000.244
365 Th3_B0ys 50.0000.244
366 5bit 50.0000.243
367 BC_T3am 50.0000.243
368 N4v4S_$oL0 50.0000.243
369 ISLAND BOY 50.0000.243
370 insec 50.0000.243
371 blueX 50.0000.243
372 @everyone`@everyone```@everyone 50.0000.242
373 th3ho4ds 50.0000.242
374 Roppers 50.0000.242
375 Y 50.0000.242
376 blue90915 50.0000.242
377 hi123 50.0000.242
378 Hellhound 50.0000.241
379 fishy 50.0000.241
380 liferacer333 50.0000.241
381 zerox 50.0000.241
382 6t41moct5 50.0000.241
383 BlackAndWhite 50.0000.241
384 kanon 50.0000.240
385 deviloper 50.0000.240
386 tapau 50.0000.240
387 RevEng 50.0000.240
388 phrp_455 50.0000.240
389 1NS0MN14 50.0000.240
390 shonan-space 50.0000.239
391 KXTI_ADEL 50.0000.239
392 Plot_Naduem 50.0000.239
393 OxyHack 50.0000.239
394 YoungFlexer_GR 50.0000.239
395 Tz(SuperHackers) 50.0000.239
396 eif 50.0000.239
397 BinaryBrigade 50.0000.238
398 asd 50.0000.238
399 vizs 50.0000.238
400 [email protected] 50.0000.238
401 Pwn337 50.0000.238
402 thesolos 50.0000.238
403 Nasoh 50.0000.238
404 $ud03₹$ 50.0000.237
405 qqqqq 50.0000.237
406 Big Brain Kidz 50.0000.237
407 phis1Ng__ 50.0000.237
408 Just4Fun 50.0000.237
409 Redhawks 50.0000.237
410 LamaNull 50.0000.237
411 Loe 50.0000.236
412 LT 50.0000.236
413 Erroneous 50.0000.236
414 Geng DDoS Kepala Batu 50.0000.236
415 hdthinh 50.0000.236
416 Bankai 😹 50.0000.236
417 RiST 50.0000.236
418 Unknown Cookies Hunters 50.0000.235
419 RangeM 50.0000.235
420 EnKai 50.0000.235
421 jyjh 50.0000.235
422 last-minute 50.0000.235
423 NTU Exchange Baller 50.0000.235
424 l1nx1n 50.0000.235
425 the elon muskeeters 50.0000.234
426 Optimvs 50.0000.234
427 k 50.0000.234
428 SatTeam 50.0000.234
429 wtakers 50.0000.234
430 brooo 50.0000.234
431 Wolves 50.0000.234
432 UA High 50.0000.234
433 d0ra1mon 50.0000.233
434 XXAA 50.0000.233
435 b4dg0d 50.0000.233
436 WHITEHATS BTR 50.0000.233
437 brabox 50.0000.233
438 bet75 50.0000.233
439 saboor-hakimi 50.0000.233
440 chipkkang9 50.0000.233
441 UCH 50.0000.232
442 gencombd 50.0000.232
443 Mahdi 50.0000.232
444 wgpsec 50.0000.232
445 er3zoid 50.0000.232
446 bananoname 50.0000.232
447 CYB3R_T3N4CI0US 50.0000.232
448 greengrass 50.0000.232
449 Cyber Security Enthusiast 50.0000.232
450 Emmm 50.0000.231
451 TCTN 50.0000.231
452 Urchinsec 50.0000.231
453 Zombers 50.0000.231
454 [email protected] 50.0000.115
rumanchoudori19May 20, 2023, 8:50 a.m.

https://www.myaddictfitness.com/group/mysite-group/discussion/9ba489c8-b042-4459-ae3a-548462bbb692
https://www.myaddictfitness.com/group/mysite-group/discussion/4c13f230-7723-4499-a01f-d5bfbb1b0760
https://www.myaddictfitness.com/group/mysite-group/discussion/81a3b023-1b7a-4852-905b-2fc1cc6b409e
https://www.myaddictfitness.com/group/mysite-group/discussion/2385537b-a7bd-4b58-850d-b85c013093f3
https://www.myaddictfitness.com/group/mysite-group/discussion/99de6a61-9fb8-4b2a-808e-4aadd3e14053
https://www.myaddictfitness.com/group/mysite-group/discussion/7d00f080-6477-4f17-9bf7-17fda595f676
https://www.myaddictfitness.com/group/mysite-group/discussion/64c5086e-1aba-4d31-a40f-cc5894edd1cd
https://www.myaddictfitness.com/group/mysite-group/discussion/7eb34903-b107-48c5-955a-4b856951f786
https://www.myaddictfitness.com/group/mysite-group/discussion/5a121acf-43e2-4424-80f4-d0147f3652a2
https://www.myaddictfitness.com/group/mysite-group/discussion/bab6303b-7177-4703-870a-146bdb686e7c
https://www.myaddictfitness.com/group/mysite-group/discussion/a8234865-956b-478e-bea1-21aeb363c495
https://www.myaddictfitness.com/group/mysite-group/discussion/dafe7217-8c8c-45a3-ad78-6da272b22f02
https://www.myaddictfitness.com/group/mysite-group/discussion/3b527f0d-0233-4bdc-b125-de4181690fa2
https://www.myaddictfitness.com/group/mysite-group/discussion/df6fc992-8799-4a49-bb3f-4d6fa1da8752
https://www.myaddictfitness.com/group/mysite-group/discussion/a11f5fb0-c6f9-4075-bcc1-b44bec3b572c
https://www.myaddictfitness.com/group/mysite-group/discussion/3b9f0cda-082c-4d68-a45a-7cc0c33be563
https://www.myaddictfitness.com/group/mysite-group/discussion/81486207-cecb-4e21-adaa-afda57f3ad41
https://www.myaddictfitness.com/group/mysite-group/discussion/f055150d-689a-4772-bb42-e8fac20279cd
https://www.myaddictfitness.com/group/mysite-group/discussion/264c9735-731b-4d67-a59d-6d00bf24b849
https://www.myaddictfitness.com/group/mysite-group/discussion/b886e6e7-89c1-49c4-8658-dd9aa0fd1b4e
https://pastelink.net/6d01esqq
https://rentry.co/x9tre
https://pastebin.com/tuEynKys


Cyber8RU7U5May 22, 2023, 9:07 a.m.

I sadly don't have access on the CTFTime GreyCTF'23 page to publish Writeups, but I've made a couple for Baby Web, Baby Crypto, Gotcha and CrashPython if somebody is interested:
https://github.com/Cyber8RU7U5/Writeups/tree/main/CTFs/GreyCTF-23

Happy hunting!


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