Also known as
  • NUS GreyHats
  • NUS_Greyhats
  • NUS Grayhats
  • NUS_Grayhats
  • NUSGrayhats

Singapore based CTF Team. We are based in School of Computing, National University of Singapore.



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Participated in CTF events

Overall rating place: 299 with 62.007 pts in 2018

PlaceEventCTF pointsRating points
2814picoCTF 20183110.00000.000
811IceCTF 2018360.00001.622
127*ctf 2018132.00000.481
120Blaze CTF 2018420.00001.538
3BSidesSF CTF 20184895.00000.000
19Midnight Sun CTF Quals965.00009.749
149Timisoara CTF 2018 Quals386.00002.346
15HITB-XCTF GSEC CTF 2018 Quals5348.000010.415
16UIUCTF 2018752.00005.709
1830CTF/TCTF 2018 Quals93.00000.900
426NeverLAN CTF 2018410.00001.086
197Harekaze CTF 201890.00000.834
10EasyCTF IV5331.000024.471
62Insomni'hack teaser 2018257.00004.172

Overall rating place: 197 with 75.298 pts in 2017

PlaceEventCTF pointsRating points
33TUCTF 20172526.000011.647
109HITCON CTF 2017 Quals506.00006.920 CTF 20171029.000011.214
64DefCamp CTF Qualification 2017355.00001.793
200CSAW CTF Qualification Round 20171026.00004.052
502ASIS CTF Finals 201718.00000.244
182Tokyo Westerns CTF 3rd 2017146.00001.998
5HITB CTF Singapore 20175417.000014.762
516Google Capture The Flag 2017 (Quals)50.00000.240
94DEF CON CTF Qualifier 2017196.00005.512
86PlaidCTF 2017587.00009.924
141nullcon HackIM 750.00000.705

Overall rating place: 156 with 82.558 pts in 2016

PlaceEventCTF pointsRating points
146SECCON 2016 Online CTF500.00002.513
95Qiwi-Infosec CTF-20161000.00002.134
14DefCamp CTF Finals 20162555.000013.733
24HITCON CTF 2016 Quals2250.000029.430
7DefCamp CTF Qualification 20161652.00009.394
50CSAW CTF Qualification Round 20162726.000013.280
69ASIS CTF Finals 2016281.00004.405
101Pwn2Win CTF 2016130.00001.423
434BCTF 201610.00000.135
245Sunshine CTF 201650.00000.152
3640CTF 2016 Quals1.00000.622
557Boston Key Party CTF 20161.00000.733
474SSCTF 2016 Quals10.00000.036
516Internetwache CTF 2016120.00000.295
274HackIM 20161500.00000.890
128Insomni'hack teaser 2016250.00003.382

Overall rating place: 251 with 40.669 pts in 2015

PlaceEventCTF pointsRating points
27132C3 CTF150.00001.687
173SECCON 2015 Online CTF1100.00005.392
138HITCON CTF 2015 Quals101.00001.364
62ASIS CTF Finals 2015476.00004.452
31Trend Micro CTF Asia Pacific & Japan 2015 Online Qualifier2406.00008.935
209CSAW CTF Qualification Round 20151460.00008.705
52PoliCTF 20151250.00008.160
228DEF CON CTF Qualifier 20151.00001.974

Team members

Team writeups

BSidesSF CTF 2018Goribbler [666]read writeup
Midnight Sun CTF QualsBabyshells [50]read writeup
Midnight Sun CTF QualsJeil [200]read writeup
Midnight Sun CTF QualsBotpanel [300]read writeup
HITB-XCTF GSEC CTF 2018 QualsUpload [253]read writeup
HITB-XCTF GSEC CTF 2018 QualsRead File [266]read writeup
HITB-XCTF GSEC CTF 2018 QualsBaby Nya [588]read writeup
HITB-XCTF GSEC CTF 2018 QualsBaby Baby [488]read writeup
HITB-XCTF GSEC CTF 2018 Qualsbabypwn [253]read writeup
HITB CTF Singapore 20171000levels [606]read writeup
HITB CTF Singapore 20172017, Dating in Singapore [219]read writeup
HITB CTF Singapore 2017simple_transfer [259]read writeup
HITB CTF Singapore 2017Pasty [425]read writeup
HITB CTF Singapore 2017flying_high [281]read writeup
HITB CTF Singapore 2017arrdeepee [666]read writeup
CSAW CTF Qualification Round 2016Warmup [50]read writeup
HITCON CTF 2016 QualsBeelzemon [150]read writeup
Insomni'hack teaser 2016smartcat1 [50]read writeup
32C3 CTFFlash [300]read writeup
HITCON CTF 2015 Qualssimple [100]read writeup
ASIS CTF Finals 2015ultra compression [125]read writeup
ASIS CTF Finals 2015Big Lie [100]read writeup
CSAW CTF Qualification Round 2015pcapin [150]read writeup
Trend Micro CTF Asia Pacific & Japan 2015 Online QualifierAnalysis - Offensive 200 [200]read writeup
Trend Micro CTF Asia Pacific & Japan 2015 Online QualifierMiscellaneous 300 [300]read writeup
PoliCTF 2015John The Traveller [100]read writeup