Balsn is a CTF team from Network Security Lab of National Taiwan University

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Participated in CTF events

Overall rating place: 20 with 358.413 pts in 2018

PlaceEventCTF pointsRating points
7hxp CTF 20181872.000029.098
1Pwn2Win CTF 20184462.000058.620
32BCTF 20181074.00001.500
5ASIS CTF Finals 20183421.000040.669
17DefCamp CTF Finals 20181154.00003.433
11SECCON 2018 Online CTF3852.000026.163
22Hack.lu CTF 20182018.000030.204
14InCTF 20183741.00006.171
2Hackover CTF 20185702.000035.940
12Teaser Dragon CTF 20181472.000018.461
7DefCamp CTF Qualification 20182065.000016.576
6Trend Micro CTF 2018 - Raimund Genes Cup - Online Qualifier4300.000015.787
234CSAW CTF Qualification Round 2018826.00004.598
15HackIT CTF 20183969.00008.409
228IceCTF 20181685.00007.558
53CTFZone 2018 Quals369.00002.140
32Google Capture The Flag 2018 (Quals)1466.000019.338
35Security Fest CTF309.00004.754
17RCTF 20185128.000012.418
12PlaidCTF 20182151.000044.959
7ASIS CTF Quals 20183021.000036.206
7*ctf 20185938.000016.338
2HITB-XCTF GSEC CTF 2018 Quals9582.000025.637
3UIUCTF 20182502.000021.801
6610CTF/TCTF 2018 Quals16.00000.187
18Nuit du Hack CTF Quals 20182451.000030.917
111Securinets CTF Quals 2018450.00001.649
6VolgaCTF 2018 Quals2610.000024.325
10BackdoorCTF 20181800.000021.815
51angstromCTF 20182260.000014.177
19N1CTF 20182491.00007.013
1Pragyan CTF 20182800.000013.680
12SECCON 2017 Final International competition1435.00008.679

Overall rating place: 63 with 172.740 pts in 2017

PlaceEventCTF pointsRating points
3634C3 CTF497.00009.038
12SECCON 2017 Online CTF5200.000026.875
10HITCON CTF 2017 Final15225.890015.123
9hxp CTF 20171439.000012.126
9DefCamp CTF Finals 20172615.000012.285
21HITCON CTF 2017 Quals2785.000037.887
6DefCamp CTF Qualification 20171983.000011.136
158CSAW CTF Qualification Round 20171351.00005.330
29Tokyo Westerns CTF 3rd 20171058.000014.180
27HackIT CTF 20171070.00005.384
15CTFZone 20172061.00005.205
111PoliCTF 2017237.00001.269
22SECUINSIDE CTF Quals 2017956.00003.593
22Trend Micro CTF 2017 - Raimund Genes Cup - Online Qualifier2200.000010.757
123Google Capture The Flag 2017 (Quals)340.00001.519
213PlaidCTF 2017201.00003.460
38BCTF 20171345.00002.778
79VolgaCTF 2017 Quals950.00005.383
420CTF 2017 Quals1099.00008.789
180Pragyan CTF 2017310.00001.008
46Boston Key Party CTF 20171151.000015.998
22Codegate 2017 prequals1680.000015.831
108AlexCTF1640.000011.298

Overall rating place: 49 with 272.365 pts in 2016

PlaceEventCTF pointsRating points
2533C3 CTF2100.000031.077
148The 318br, DESEC, and SucuriHC Capture The Flag (3DSCTF)600.00001.671
30SharifCTF 72430.000015.700
43SECCON 2016 Online CTF1800.00009.005
31Juniors CTF 20164000.00000.000
12RC3 CTF 20165140.000014.601
4Qiwi-Infosec CTF-20166600.000016.963
9DefCamp CTF Finals 20162957.000016.519
27Hack The Vote 20161951.00008.835
19EKOPARTY CTF 20162350.000022.233
49Hack.lu CTF 2016801.000019.924
14HITCON CTF 2016 Quals2850.000038.575
10TUM CTF 20162523.000013.931
15DefCamp CTF Qualification 20161400.00007.193
42CSAW CTF Qualification Round 20162826.000013.843
29WhiteHat Contest 12500.00002.730
76Tokyo Westerns/MMA CTF 2nd 2016790.00007.133
222Hackcon 2016501.00002.343
16IceCTF 20163516.00000.000
41Trend Micro CTF 2016 Online Qualifier1000.00006.339
132ASIS CTF Quals 2016110.00001.457
46Google Capture The Flag 20161755.00008.663
5660CTF 2016 Quals1.00000.582
118Boston Key Party CTF 201613.00008.633
62Internetwache CTF 20161820.00004.414

Overall rating place: 350 with 27.800 pts in 2015

PlaceEventCTF pointsRating points
2389447 Security Society CTF 2015162.00001.161
77RCTF 2015 Quals560.00003.415
56HITCON CTF 2015 Quals401.00004.871
36Trend Micro CTF Asia Pacific & Japan 2015 Online Qualifier2205.00008.152
174CSAW CTF Qualification Round 20151710.000010.201

Team members

Team writeups

EventTaskAction
hxp CTF 2018blind [190]read writeup
hxp CTF 2018oops2 [206]read writeup
hxp CTF 2018curve12833227 [187]read writeup
hxp CTF 2018blinder [350]read writeup
Pwn2Win CTF 2018Minishell [283 points]read writeup
Pwn2Win CTF 2018Message Board [Third Flag] [453 points]read writeup
Pwn2Win CTF 2018Message Board [Second Flag] [453 points]read writeup
Pwn2Win CTF 2018Message Board [First Flag] [383 points]read writeup
Pwn2Win CTF 2018Berg’s Club [373 points]read writeup
Pwn2Win CTF 2018GCM [373 points]read writeup
Pwn2Win CTF 2018Back to Bletchley Park [474 points]read writeup
ASIS CTF Finals 2018Secure API [367]read writeup
ASIS CTF Finals 2018Proxy-Proxy [237]read writeup
ASIS CTF Finals 2018Red Bands [343]read writeup
ASIS CTF Finals 2018Bit Square [260]read writeup
ASIS CTF Finals 2018ASVDB [152]read writeup
ASIS CTF Finals 2018Inception [131]read writeup
ASIS CTF Finals 2018SPM [322]read writeup
DefCamp CTF Finals 2018TicketCore read writeup
DefCamp CTF Finals 2018Scribbles [343]read writeup
Hack.lu CTF 2018Relations [205]read writeup
Hack.lu CTF 2018Escape the Grid [500]read writeup
Hackover CTF 2018Bwv2342 [499]read writeup
Hackover CTF 2018oblivious transfer [500]read writeup
Hackover CTF 2018secure_hash v2 [488]read writeup
Hackover CTF 2018Flagmaker [500]read writeup
Teaser Dragon CTF 20183NTERPRISE s0lution [278]read writeup
Teaser Dragon CTF 2018Nodepad [330]read writeup
Teaser Dragon CTF 2018AES-128-TSB [219]read writeup
Teaser Dragon CTF 2018Chains of Trust [391]read writeup
DefCamp CTF Qualification 2018Online linter [242]read writeup
DefCamp CTF Qualification 2018Even more lucky? [50]read writeup
DefCamp CTF Qualification 2018Lucky? [50]read writeup
DefCamp CTF Qualification 2018Ransomware [50]read writeup
DefCamp CTF Qualification 2018Get Admin [220]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierMisc 300 [300]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierMisc 200 (Constellation) [200]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierMisc 100 [100]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierRe Other 400 (Parsletongue) [400]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online Qualifier Forensics-Crypto 2 300 [300]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online Qualifier Forensics-Crypto 2 100 [100]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierForensics-Crypto 2 200 (DeepDive) [200]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierForensics-Crypto 1 400 [400]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierReversing-Binary 400 [400]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierReversing-Binary 300 [300]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierReversing-Binary 100 [100]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierOffensive-Analysis 200 [200]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierOffensive-Analysis 300 [300]read writeup
Trend Micro CTF 2018 - Raimund Genes Cup - Online QualifierOffensive-Analysis 400 [400]read writeup
HackIT CTF 2018coffee_overflow [1000]read writeup
DEF CON CTF Qualifier 2018exzendtential-crisis [140]read writeup
DEF CON CTF Qualifier 2018ddtek: Preview [151]read writeup
DEF CON CTF Qualifier 2018ghettohackers: Throwback [121]read writeup
DEF CON CTF Qualifier 2018race wars [135]read writeup
DEF CON CTF Qualifier 2018flagsifier [271]read writeup
DEF CON CTF Qualifier 2018sbva [110]read writeup
PlaidCTF 2018idIoT: Camera [150]read writeup
ASIS CTF Quals 2018 Just Sort! [176]read writeup
ASIS CTF Quals 2018Iran [230]read writeup
ASIS CTF Quals 2018The most Boring [195]read writeup
ASIS CTF Quals 2018Tokyo [260]read writeup
ASIS CTF Quals 2018Plastic [64]read writeup
ASIS CTF Quals 2018Shapiro [218]read writeup
ASIS CTF Quals 2018 Left or Right? [88]read writeup
ASIS CTF Quals 2018Warm up [27]read writeup
ASIS CTF Quals 2018Gameshop [426]read writeup
ASIS CTF Quals 2018Sharp eyes [260]read writeup
ASIS CTF Quals 2018Good WAF [131]read writeup
*ctf 2018SimpleWeb [132]read writeup
*ctf 2018milktea [526]read writeup
*ctf 2018wasm [714]read writeup
*ctf 2018primitive [869]read writeup
*ctf 2018ssss [606]read writeup
*ctf 2018ssss2 [625]read writeup
BackdoorCTF 2018mind-fcuk [250]read writeup
BackdoorCTF 2018re-curse [150]read writeup
HITB-XCTF GSEC CTF 2018 Qualshacku [606]read writeup
HITB-XCTF GSEC CTF 2018 Qualssbsub [769]read writeup
HITB-XCTF GSEC CTF 2018 Qualshex [869]read writeup
HITB-XCTF GSEC CTF 2018 QualsBaby FS [1000]read writeup
HITB-XCTF GSEC CTF 2018 QualsPHP lover [769]read writeup
VolgaCTF 2018 QualsCorp monitoring [200]read writeup
N1CTF 2018baby_neural_network [740]read writeup
N1CTF 2018patience [769]read writeup
SECCON 2017 Online CTFVery smooth [300]read writeup
PlaidCTF 2017bigpicture [200]read writeup
0CTF 2017 QualsBabyHeap2017 [250]read writeup
0CTF 2017 QualsEasiestPrintf [150]read writeup
Codegate 2017 prequalsMeow [365]read writeup
Codegate 2017 prequalsBabyPwn [50]read writeup
DefCamp CTF Finals 2016SMS [200]read writeup
HITCON CTF 2016 QualsSecret Holder [100]read writeup
DefCamp CTF Qualification 2016My Gift [200]read writeup
DefCamp CTF Qualification 2016Warm heap [100]read writeup
CSAW CTF Qualification Round 2016Tutorial [200]read writeup
CSAW CTF Qualification Round 2016Aul [100]read writeup
CSAW CTF Qualification Round 2016Warmup [50]read writeup
Boston Key Party CTF 2016unholy [4]read writeup
Internetwache CTF 2016Exp 60 - EquationSolver [60]read writeup
Internetwache CTF 2016Exp 50 - Ruby's count [50]read writeup
Internetwache CTF 2016Code 60 - It's Prime Time! [60]read writeup
Internetwache CTF 2016Code 50 - A numbers game [50]read writeup
Internetwache CTF 2016Crypto 90 - Bank [90]read writeup
Internetwache CTF 2016Crypto 60 - Oh Bob! [60]read writeup
Internetwache CTF 2016Rev 80 - Eso Tape [80]read writeup
Internetwache CTF 2016Rev 60 File Checker [60]read writeup
Internetwache CTF 2016Rev 50 - SPIM [50]read writeup
Internetwache CTF 2016Misc 60 - Quick Run [60]read writeup
Internetwache CTF 2016Misc 90 - BarParty [90]read writeup
Internetwache CTF 2016Misc 50 - The Hidden Message [50]read writeup
Internetwache CTF 2016Rev 90 - The Cube [90]read writeup