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: 22.46 

Rating weight: 22.46 

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 6612.00044.920
2 idek 6612.00033.690
3 purf3ct 6612.00029.947
4 u0K++ 6612.00028.075
5 r3kapig 6612.00026.952
6 Zer0Tolerance 6612.00026.203
7 504_Veterans 6612.00025.669
8 Social Engineering Experts 6118.00023.589
9 NUSHmallows 5243.00020.305
10 Emu Exploit 5204.00019.923
11 796f75 5189.00019.668
12 polygl0ts 4776.00018.095
13 thehackerscrew 4729.00017.791
14 ./Vespiary 4307.00016.235
15 kalmarunionen 4172.00015.669
16 Mitsutaki 3975.00014.906
17 The Council of Sheep 3932.00014.678
18 ItzyBitzySpider 3870.00014.394
19 team7 3715.00013.801
20 BKISC 3379.00012.601
21 Black Bauhinia 3362.00012.490
22 b01lers 3141.00011.690
23 FluxFingers 2816.00010.542
24 🦈 SLIGHT_SHARK 🙂 2672.00010.012
25 /bad 2599.0009.727
26 IQ-toppene 2294.0008.656
27 Penguin 2177.0008.227
28 bi0s 2113.0007.980
29 youtiaos 1990.0007.534
30 ret2school 1926.0007.291
31 team1 1901.0007.182
32 CVE2K9 1888.0007.115
33 xXxpassword123xXx 1875.0007.050
34 Six Boys Cry 1866.0006.999
35 KCSC 1778.0006.681
36 team berries 1712.0006.439
37 VMP 1645.0006.195
38 LosFuzzys 1636.0006.148
39 MATE 1613.0006.055
40 A.k.a.t.s.u.k.i 1504.0005.670
41 CreateRemoteThread 1469.0005.538
42 鸡饭GPA 1450.0005.460
43 Slug Security 1386.0005.230
44 Disboard 1317.0004.984
45 squarey-eggs 1260.0004.779
46 rwandi 1240.0004.700
47 FoundSatis 1190.0004.520
48 duckrice404 1182.0004.483
49 1140.0004.331
50 Tower of Hanoi 1127.0004.277
51 havce 1105.0004.194
52 aku punya combat power 5 juta 1054.0004.012
53 die_trying 1030.0003.923
54 m1t0 1021.0003.884
55 TheRoundTable 1017.0003.863
56 M53 1014.0003.845
57 InfoSecIITR 1014.0003.838
58 Uwuua ogqyogqyu 1010.0003.818
59 Trustable 980.0003.710
60 JHDiscord 980.0003.703
61 Sector Z 955.0003.612
62 garglemyballs 882.0003.358
63 mikoan 840.0003.210
64 PowerPoint Warriors 824.0003.150
65 f(x) 712.0002.764
66 lostkids 700.0002.718
67 AcerNitro5 655.0002.560
68 fish 650.0002.538
69 zst 650.0002.533
70 nekochan 630.0002.461
71 16j 617.0002.412
72 Rubi di Cubrik 604.0002.364
73 italeek 602.0002.353
74 Cool Team 600.0002.342
75 ns4style 580.0002.270
76 BUFFPHROGGY 562.0002.205
77 PurpleBeta 552.0002.167
78 alert(69); 552.0002.163
79 0ops 550.0002.153
80 HPN 550.0002.149
81 frog<3 550.0002.146
82 COMPASS 550.0002.142
83 user202729 is not participating 504.0001.983
84 BIT CRIMINALS 500.0001.966
85 ping 192.168.30.256 500.0001.963
86 Oi Shoeske 500.0001.960
87 sharker 500.0001.957
88 team4238 500.0001.954
89 cryptpro 500.0001.951
90 sg17025 500.0001.948
91 d0UBleW 500.0001.945
92 F0und 454.0001.786
93 robot 450.0001.770
94 BocilSerodot 450.0001.768
95 pwnstars 450.0001.765
96 Spawn Point 450.0001.763
97 red.flags 450.0001.760
98 0x41414141 450.0001.758
99 Mazala 450.0001.755
100 Duck Dynasty 450.0001.753
101 Garu 07 Hackers 450.0001.751
102 MARK 421.0001.650
103 Unknown 402.0001.584
104 whoami 400.0001.575
105 greenhat 400.0001.573
106 REDACTED 400.0001.571
107 zacaifan 400.0001.569
108 Th3 Blu3 T3am 400.0001.567
109 n00bp 400.0001.565
110 Gregasaurians 400.0001.563
111 G-Vi.kings 400.0001.561
112 Big Brain Club 400.0001.559
113 bobob 400.0001.558
114 TCP1P 400.0001.556
115 noraneco 400.0001.554
116 stone 368.0001.444
117 SkyP4rad0x 350.0001.381
118 unpatched 350.0001.379
119 plsplspls 350.0001.378
120 FR13NDS TEAM 350.0001.376
121 Working From Home 350.0001.375
122 Heike 350.0001.373
123 Brainstorm Brigade 350.0001.372
124 BetR 350.0001.370
125 skyepodium 350.0001.369
126 My Little Trojan 350.0001.367
127 ATLAS 350.0001.366
128 Archive 302.0001.201
129 Flag Temp 300.0001.193
130 deadlock breakfast 300.0001.192
131 0nePadding 300.0001.191
132 t1_vo_dich 300.0001.189
133 AM0GU5 300.0001.188
134 BooYah! 300.0001.187
135 QzSG 300.0001.185
136 HexCore 300.0001.184
137 sHrACK 300.0001.183
138 Nijika 300.0001.182
139 Perkutut 300.0001.181
140 idk 300.0001.179
141 J4ckP0t 300.0001.178
142 killswitch 300.0001.177
143 Ixbixbam 300.0001.176
144 CactusTeam 300.0001.175
145 LTA 300.0001.174
146 kirbbcutiepie 300.0001.173
147 KEYBOARD_WARRIORS 300.0001.172
148 Malware 252.0001.008
149 Javelin 252.0001.007
150 CDETY 250.0000.999
151 babyshark 250.0000.998
152 A7k 250.0000.997
153 Hansecurity 250.0000.996
154 ayaya 250.0000.995
155 klw58009 250.0000.994
156 lr 250.0000.993
157 int main() 250.0000.992
158 Snooze 250.0000.991
159 ItayB 250.0000.990
160 Bits & Pieces 250.0000.990
161 Cat Detectives 250.0000.989
162 GameStonk 250.0000.988
163 EchoSec 250.0000.987
164 phis1Ng_ 250.0000.986
165 archlinux 250.0000.985
166 IH 250.0000.985
167 bacon2 250.0000.984
168 Hehexd 250.0000.983
169 lackingfacialtissue 250.0000.982
170 m3m3nt0m0r1 250.0000.981
171 Terminal Titans 250.0000.981
172 JSoyke 250.0000.980
173 Crypt3x 250.0000.979
174 Upsize 200.0000.808
175 inotsmort 200.0000.808
176 Revenger 200.0000.807
177 BackMoon 200.0000.806
178 Martial_Law_Enforcer 200.0000.806
179 Aloha Snackbar 200.0000.805
180 Imposter detection squad 200.0000.804
181 Ansibles 200.0000.803
182 HackerMen 200.0000.803
183 hyperjacked 200.0000.802
184 Shady Guys 200.0000.801
185 Coucou 200.0000.801
186 codebreakers 200.0000.800
187 g00fy_ahh 200.0000.799
188 Dot Slashes 200.0000.799
189 justforfun 200.0000.798
190 Tempura 200.0000.798
191 ZiggTeam 200.0000.797
192 aoma 200.0000.796
193 CRMA Cyber Club 200.0000.796
194 bendasnake 200.0000.795
195 Xi Jinping 200.0000.795
196 bufferoverflo 200.0000.794
197 BabyChicken 200.0000.793
198 G01D D1GG3RS 200.0000.793
199 lingfeng 200.0000.792
200 Farming Simulator Nextgen 200.0000.792
201 posix 200.0000.791
202 pwoofy 200.0000.791
203 PearlSky 200.0000.790
204 CTFStrikers 200.0000.789
205 Croissant 200.0000.789
206 Alexius 150.0000.619
207 Imagine Losing 150.0000.618
208 gua_9_Arctic 150.0000.618
209 SKARPION 150.0000.617
210 TEAM 150.0000.616
211 ze2 150.0000.616
212 WE12h4v3Fun 150.0000.615
213 CLPWN 150.0000.615
214 new_to_ctf 150.0000.614
215 bunbohue 150.0000.614
216 Invaders0x1 150.0000.614
217 aixy 150.0000.613
218 Audax Invictus 150.0000.613
219 DarkArmy TH 150.0000.612
220 Hackurr 150.0000.612
221 CBL 150.0000.611
222 HEHEHE 150.0000.611
223 T4n_M1nh 150.0000.610
224 l0$er$ 150.0000.610
225 CSX<? extends Suffering> 150.0000.609
226 CyberSpace 150.0000.609
227 Drasnoozers 150.0000.608
228 team name 150.0000.608
229 Clown Central Singapore 150.0000.608
230 EvilBunnyWrote 150.0000.607
231 n0n 150.0000.607
232 N07_4n_4dM1N 150.0000.606
233 Iderected 150.0000.606
234 Slab Allocator 150.0000.606
235 ice-cream truck 150.0000.605
236 şırdan 150.0000.605
237 Densan 150.0000.604
238 MamakStall 150.0000.604
239 CyberSecurity Club at SFSU 150.0000.604
240 enryu ganteng 150.0000.603
241 shadow aperture 150.0000.603
242 Last Place 150.0000.602
243 turtl3 150.0000.602
244 TakeOutYey 150.0000.602
245 xon1l 150.0000.601
246 PatH F1nd3rs 150.0000.601
247 misha 150.0000.600
248 BOLEEEH 150.0000.600
249 Friendsics 150.0000.600
250 painpeko 150.0000.599
251 hakid29 150.0000.599
252 Team Kakashi 150.0000.599
253 Under_DogsCTF 150.0000.598
254 Redhats 150.0000.598
255 kennat 150.0000.598
256 CryptoCrackers 150.0000.597
257 Japending 150.0000.597
258 13:49 150.0000.597
259 op 150.0000.596
260 manhwa 150.0000.596
261 Madoka 150.0000.596
262 Ph0en1x_Team 150.0000.595
263 jalynk23 150.0000.595
264 FF15 150.0000.595
265 HelloThere 150.0000.594
266 TUAS 150.0000.594
267 sha007 150.0000.594
268 r 150.0000.593
269 fzhshzh 150.0000.593
270 qqew 100.0000.423
271 PlayerTeam 100.0000.423
272 RVCTF sk1ll 155u3 100.0000.422
273 johntheripper 100.0000.422
274 SHA-272 100.0000.422
275 Ko 100.0000.421
276 n0m3rcy[KNU] 100.0000.421
277 hehe 100.0000.421
278 ferr0 100.0000.420
279 FlagMotori 100.0000.420
280 Grofi’Hack 100.0000.420
281 Cy83r_Cru54d3r5 100.0000.420
282 TeamNameIsOkay 100.0000.419
283 Zlick3r 100.0000.419
284 What are you doing in my swamp? 100.0000.419
285 mikejam 100.0000.418
286 LYX 100.0000.418
287 neil 100.0000.418
288 Atlas Cyber 100.0000.418
289 here4fan 100.0000.417
290 head /dev/urandom | base64 -w0 | cowsay 100.0000.417
291 haha 100.0000.417
292 Hecate 100.0000.417
293 stalk 100.0000.416
294 10 100.0000.416
295 test123777 100.0000.416
296 Team Strawberry 100.0000.416
297 ClownNation 100.0000.415
298 ✈️ 100.0000.415
299 K4mN1 100.0000.415
300 qq_crew 100.0000.415
301 froste09 100.0000.414
302 OutSaneArmy 100.0000.414
303 tastyfrenchtoast 100.0000.414
304 TakeOff 100.0000.414
305 G1tc_Gu4rdians 100.0000.413
306 YCF 100.0000.413
307 KXTI_Shara 100.0000.413
308 socialcredit 100.0000.413
309 Ireland without the RE 100.0000.412
310 hackuaz 100.0000.412
311 StrixGoldhorn 100.0000.412
312 TopBins 100.0000.412
313 Zoomers 100.0000.411
314 D4ck3n 100.0000.411
315 csw 100.0000.411
316 #! 100.0000.411
317 sf_1emd 100.0000.411
318 7071 100.0000.410
319 P1R473 100.0000.410
320 ABCDenialE 100.0000.410
321 DucksSayWhat 100.0000.410
322 Ucha_CTF 100.0000.409
323 3sadman 100.0000.409
324 xbjhlatdoxHDIUSTAd 100.0000.409
325 StackUnderflow 100.0000.409
326 MJX 100.0000.409
327 ForFun 100.0000.408
328 sgwr 100.0000.408
329 kjiel 100.0000.408
330 0nly^y0u 100.0000.408
331 Yowai Mo 100.0000.408
332 sannax 100.0000.407
333 SU 0A64 100.0000.407
334 The Guardian 100.0000.407
335 idk-wh0am1 100.0000.407
336 forfun0101 100.0000.407
337 UofTCTF 100.0000.406
338 spaghet 100.0000.406
339 BuGErr0rJubJub 100.0000.406
340 idfk 100.0000.406
341 teamo1 100.0000.406
342 PuPu Team 100.0000.405
343 cyberTrooper 100.0000.405
344 teamgrunt 100.0000.405
345 JustRun 100.0000.405
346 Soloqoo 100.0000.405
347 :tf: 100.0000.404
348 p3nt4g0n 100.0000.404
349 [email protected] 100.0000.404
350 SecurityFirst0 100.0000.404
351 halston 100.0000.404
352 iwan 100.0000.403
353 zeromarea 100.0000.403
354 empty 100.0000.403
355 maen 100.0000.403
356 pinkpong 100.0000.403
357 korea99 100.0000.403
358 lastdance 100.0000.402
359 Do_I_Know_You? 100.0000.402
360 XTruffle 50.0000.232
361 Pakekoding 50.0000.232
362 loawi 50.0000.232
363 C0Bra 50.0000.232
364 puf61379 50.0000.232
365 Th3_B0ys 50.0000.231
366 5bit 50.0000.231
367 BlueCyber Homies 50.0000.231
368 N4v4S_$oL0 50.0000.231
369 ISLAND BOY 50.0000.231
370 insec 50.0000.231
371 blueX 50.0000.230
372 @everyone`@everyone```@everyone 50.0000.230
373 th3ho4ds 50.0000.230
374 Roppers 50.0000.230
375 Y 50.0000.230
376 blue90915 50.0000.230
377 hi123 50.0000.229
378 Hellhound 50.0000.229
379 fishy 50.0000.229
380 liferacer333 50.0000.229
381 zerox 50.0000.229
382 6t41moct5 50.0000.229
383 BlackAndWhite 50.0000.228
384 kanon 50.0000.228
385 deviloper 50.0000.228
386 tapau 50.0000.228
387 RevEng 50.0000.228
388 phrp_455 50.0000.228
389 1NS0MN14 50.0000.228
390 shonan-space 50.0000.227
391 KXTI_ADEL 50.0000.227
392 Plot_Naduem 50.0000.227
393 OxyHack 50.0000.227
394 YoungFlexer_GR 50.0000.227
395 Super_Hackers 50.0000.227
396 eif 50.0000.227
397 BinaryBrigade 50.0000.226
398 asd 50.0000.226
399 vizs 50.0000.226
400 [email protected] 50.0000.226
401 Pwn337 50.0000.226
402 thesolos 50.0000.226
403 Nasoh 50.0000.226
404 $ud03₹$ 50.0000.225
405 qqqqq 50.0000.225
406 Big Brain Kidz 50.0000.225
407 1337%Yogurt 50.0000.225
408 Just4Fun 50.0000.225
409 Redhawks 50.0000.225
410 LamaNull 50.0000.225
411 Loe 50.0000.224
412 LT 50.0000.224
413 Erroneous 50.0000.224
414 Geng DDoS Kepala Batu 50.0000.224
415 hdthinh 50.0000.224
416 Bankai 😹 50.0000.224
417 RiST 50.0000.224
418 Unknown Cookies Hunters 50.0000.224
419 RangeM 50.0000.223
420 EnKai 50.0000.223
421 jyjh 50.0000.223
422 last-minute 50.0000.223
423 NTU Exchange Baller 50.0000.223
424 l1nx1n 50.0000.223
425 the elon muskeeters 50.0000.223
426 Optimvs 50.0000.223
427 k 50.0000.222
428 SatTeam 50.0000.222
429 wtakers 50.0000.222
430 brooo 50.0000.222
431 Wolves 50.0000.222
432 UA High 50.0000.222
433 d0ra1mon 50.0000.222
434 XXAA 50.0000.222
435 b4dg0d 50.0000.221
436 WHITEHATS BTR 50.0000.221
437 brabox 50.0000.221
438 bet75 50.0000.221
439 saboor-hakimi 50.0000.221
440 chipkkang9 50.0000.221
441 UCH 50.0000.221
442 gencombd 50.0000.221
443 Mahdi 50.0000.221
444 wgpsec 50.0000.220
445 er3zoid 50.0000.220
446 bananoname 50.0000.220
447 CYB3R_T3N4CI0US 50.0000.220
448 greengrass 50.0000.220
449 Cyber Security Enthusiast 50.0000.220
450 Emmm 50.0000.220
451 TCTN 50.0000.220
452 UrchinSec 50.0000.220
453 Zombers 50.0000.219
454 [email protected] 50.0000.110
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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