CTFtime.org

US Blue Hens

Also known as
  • bluehens
  • backup hens
  • sneaky birds
  • 4hens

Academic team University of Delaware

Sign in to join the team.



Participated in CTF events

Overall rating place: 433 with 114.789 pts in 2025

Country place: 50

PlaceEventCTF pointsRating points
145Hack.lu CTF 2025283.00005.772
414jailCTF 202550.00000.140
40K17 CTF3191.000011.593
398[DELAYED] CSAW CTF Qualification Round 202510.00000.061
260FortID CTF 2025400.00001.520
470ImaginaryCTF 2025700.00004.707
100snakeCTF 2025 Quals150.00001.913
152Break the Syntax CTF 2025372.00002.179
146UMDCTF 20252744.000012.152
78UMassCTF 20251098.00004.892
172DawgCTF 20254425.000020.455
1591753CTF 2025500.00005.028
154squ1rrel CTF 20251262.00002.824
88pingCTF 2025150.00001.117
74UTCTF 20259361.000043.324
113KalmarCTF 2025507.00002.262
106PwnMe CTF Quals 2025701.00002.033
69BITSCTF 20251675.00004.041

Overall rating place: 96 with 334.116 pts in 2024

Country place: 11

PlaceEventCTF pointsRating points
228 GlacierCTF 2024100.00000.616
29BlockCTF 2024 (Formerly SquareCTF)1426.000022.147
137DEADFACE CTF 20242293.00007.440
233TCP1P CTF 2024: Exploring Nusantara's Digital Realm207.00000.578
375BuckeyeCTF 2024180.00001.290
171DefCamp Capture the Flag (D-CTF) 2024 Quals291.00003.025
31jailCTF 20243176.00004.023
77m0leCon CTF 2025 Teaser100.00002.832
20CSAW CTF Qualification Round 20245914.000021.219
191CyberSpace CTF 2024650.00001.107
257L3akCTF 2024150.00000.265
61NahamCon CTF 20247109.000014.993
12BYUCTF 20249795.000022.542
2TBTL CTF 20243937.000031.369
2squ1rrel CTF 202411593.000036.375
22UMDCTF 20248577.000030.372
95cr3 CTF 2024118.00000.432
1HackPack CTF 2024 - LLM edition2950.000065.420
6RITSEC CTF 20245586.000021.578
665UTCTF 2024100.00000.306
24UNbreakable International 2024 - Individual Phase2847.000011.678
169KalmarCTF 2024100.00000.389
20Shakti CTF 20242750.000013.593
98GCC CTF 2024671.00001.377
543osu!gaming CTF 2024518.00001.442
10BraekerCTF1666.000013.056
62BITSCTF 20241722.00004.907
2320xL4ugh CTF 2024110.00000.423

Overall rating place: 131 with 247.133 pts in 2023

Country place: 14

PlaceEventCTF pointsRating points
8pingCTF 20233302.000018.410
32TUCTF 20232367.00007.134
106Square CTF 2023326.00003.620
42HK Cyber Security New Generation CTF Challenge 2023 (Online)2670.000014.181
207EKOPARTY CTF 2023314.00000.555
66TCP1P CTF 2023: First Step Beyond Nusantara1100.00002.432
387ASIS CTF Quals 202323.00000.659
172CSAW CTF Qualification Round 20231491.00003.264
127Cyber Heroines CTF600.00002.800
583PatriotCTF 2023510.00000.892
314HITCON CTF 2023 Quals50.00001.013
203DownUnderCTF 20231987.00007.957
345ImaginaryCTF 2023600.00001.492
237Crypto CTF 202356.00001.440
144UIUCTF 2023568.00005.981
100BSidesTLV 2023 CTF139.00000.592
595TJCTF 202324.00000.220
58BYUCTF 20236833.00006.443
172m0leCon CTF 2023 Teaser50.00001.248
509WaniCTF 2023741.00002.496
676UMDCTF 202310.00000.083
13TAMUctf 20239605.000025.674
756ångstromCTF 2023180.00004.923
3DawgCTF 20238595.000047.135
52cursedCTF 20231781.00003.407
5Bucket CTF 202314988.000027.599
47UMass CTF 2023925.00005.328
3463Cyber Apocalypse 2023: The Cursed Mission925.00000.935
72b01lers CTF534.00003.312
30WolvCTF 20235029.00008.048
133vikeCTF 2023100.00001.037
62UTCTF 2025 20233624.00009.365
135hxp CTF 202268.00002.095
104KalmarCTF 2023600.00001.125
28VU CYBERTHON 20231920.000015.346
6Incognito 4.012422.000023.544
1130xL4ughCTF 2023610.00002.192
28LA CTF 202310039.000016.660
522IrisCTF 202350.00000.155

Overall rating place: 131 with 191.922 pts in 2022

Country place: 18

PlaceEventCTF pointsRating points
798X-MAS CTF 202210.00000.053
115KITCTFCTF 2022216.00000.666
11TUCTF 20226915.000014.952
35Square CTF 20221151.000010.405
55CTF After Dark - Fall 2022255.00000.000
27BuckeyeCTF 20223335.00009.974
80EKOPARTY CTF 20221926.00002.791
505Jade CTF100.00000.287
113ASIS CTF Quals 2022192.00005.275
295SekaiCTF 2022239.00000.622
130DownUnderCTF 2022 (Online) 2085.00004.281
238RomHack 2022 CTF100.00000.566
172CSAW CTF Qualification Round 20221186.00003.251
325Hacker's Playground 2022160.00000.807
604SHELLCTF 2022355.00001.456
460corCTF 2022110.00000.370
226TFC CTF 2022750.00001.968
150MCH2022 CTF600.00000.000
373Lexington Informatics Tournament CTF 2022653.00001.771
12BDSec CTF 20222850.000011.844
37ImaginaryCTF 20223950.00009.360
340Crypto CTF 202219.00000.350
159HSCTF 91831.00005.275
104DEF CON CTF Qualifier 202273.00002.893
101hackrocks & HackArmour CTF25.00001.128
203TJCTF 2022957.00002.554
33m0leCon CTF 2022 Teaser466.00007.644
13EZ CTF | Beginner Friendly6430.00000.000
251ångstromCTF 2022920.000011.048
41DawgCTF 2022500.00003.169
504NahamCon CTF 20221301.00001.305
87b01lers CTF554.00004.886
10TAMUctf 20224484.000015.184
204PlaidCTF 20221.00000.490
4HackPack CTF 20223724.000039.731
48 nullcon HackIM 2022482.00002.805
43RITSEC CTF 20222949.00009.447
18Wolverine Security Conference/CTF6370.000012.897
241OFPPT-CTF Morocco3185.00003.160
25VishwaCTF 20229914.000010.696
121UTCTF 2025 20222663.00004.886
88DaVinciCTF 20221368.00003.509
641337UP LIVE CTF2716.00005.915
24UMDCTF 202212321.000015.945
45FooBar CTF 20221012.00003.909
31TSJ CTF 2022589.00004.865
88DefCamp CTF 21-22 Online550.00005.101
123KnightCTF 20222675.00009.039

Overall rating place: 109 with 192.191 pts in 2021

Country place: 17

PlaceEventCTF pointsRating points
532X-MAS CTF 2021 Second Weekend6.00000.050
215idekCTF 2021100.00000.260
4NITECTF10766.000026.016
145VULNCON CTF 202110.00000.211
116HITCON CTF 202192.00002.018
22MetaCTF CyberGames 20219875.000016.875
2532021 Metasploit community CTF100.00001.425
375Cyber Santa is Coming to Town3000.00009.333
79Dragon CTF 2021247.00007.663
83TFC CTF 2021857.00004.638
16Damncon 20211553.00008.541
109Block CTF 202150.00001.071
509N1CTF 202168.00000.474
3Hackfest CTF 13th Edition - Casual2700.000022.544
88HTB Uni CTF 2021 - Quals2250.00005.453
43Intent CTF 2021300.00001.726
19K3RN3LCTF3768.00009.466
106eHaCON CTF 2K21176.00004.499
284DUNGEON - BSides Ahmedabad CTF 202166.00000.497
11DamCTF 20215652.000019.180
33CTF Internacional MetaRed 2021 - 3rd STAGE1531.00000.000
54Hack.lu CTF 2021812.000015.550
9Killer Queen CTF 20216186.000016.926
103BuckeyeCTF 2021554.00002.303
73ASIS CTF Quals 2021283.00009.274
148DEADFACE CTF2625.00006.083
51pbctf 2021629.00003.444
311DownUnderCTF 2021 (Online)1600.00002.460
161CSAW CTF Qualification Round 20211671.00000.000
131TMUCTF 2021946.00001.401
184ALLES! CTF 2021221.00002.078
544corCTF 2021305.00000.600
254Really Awesome CTF 2021850.00002.060
481InCTF 202110.00000.176
387BSides Noida CTF50.00000.151
152RaRCTF 20211070.00001.775
215UIUCTF 2021452.00001.087
153Crypto CTF 202160.00000.728
222ImaginaryCTF 2021980.00002.243
100Lexington Informatics Tournament CTF 20212279.00006.790
119redpwnCTF 20211720.00006.268
273Hack-A-Sat 2 Qualifiers48.00000.000
81CTFZone 20211176.00001.867
402WeCTF 202110.00000.000
216HSCTF 84199.00005.834
285THC CTF 202111.00000.121
89Circle City Con CTF 2021608.00000.000
118S.H.E.L.L. CTF1362.00000.000
208m0leCon CTF 2021 Teaser57.00000.487
58DCTF 20214250.00000.000
64DawgCTF 20212155.00000.000
116DEF CON CTF Qualifier 2021101.00003.043
262HeroCTF v3405.00001.490
72TAMUctf 20211050.00000.000
97S4CTF 2021114.00000.566
78UMDCTF 20214002.00000.000
271HackPack CTF 2021101.00000.000
139Midnight Sun CTF 2021 Quals153.00001.849
177BSides Canberra 2021 CTF61.00000.000
31Pragyan CTF 2021425.00001.642
40b01lers CTF1611.00000.000
149ångstromCTF 20211480.000011.060
223UMassCTF 2021561.00001.794
205LINE CTF 202150.00000.281
68Codefest CTF 20201557.00007.945
244UTCTF 20212945.00002.991
62DaVinciCTF 2021366.00003.386
150zer0pts CTF 2021247.00001.328
227Tenable CTF 20211950.00006.513
606DiceCTF 20211.00000.046
247justCTF [*] 2020150.00001.015
610x41414141 CTF6369.00000.000
1430xL4ughCTF550.00002.386
140TetCTF 2021200.00000.707

Overall rating place: 287 with 103.878 pts in 2020

Country place: 43

PlaceEventCTF pointsRating points
136X-MAS CTF 20201244.00000.000
151pbctf 202039.00000.338
1662020 December Metasploit community CTF400.00004.932
176Cryptography CTF100.00000.000
197HITCON CTF 202050.00001.470
109Dragon CTF 2020197.00004.829
405Balsn CTF 2020110.00000.392
39Block CTF 2020501.00008.552
28SunshineCTF 20201104.00007.866
86KipodAfterFree CTF 202030.00000.439
28Newark Academy CTF 20206976.000013.339
67CyberYoddha CTF 20206460.000011.965
272CyberSecurityRumble CTF300.00000.859
29RaziCTF 202013244.00007.666
80Hack.lu CTF 2020835.000015.099
43Syskron Security CTF 20202620.000010.955
493N1CTF 202069.00000.299
304Hacktober CTF1380.00003.894
473b01lers CTF bootcamp100.00000.433
176DarkCTF2964.00002.929
177TokyoWesterns CTF 6th 2020219.00004.867
165DownUnderCTF 20201926.00003.522
279CSAW CTF Qualification Round 2020405.00005.636
233FwordCTF 2020635.00000.916
77Crypto CTF 2020143.00001.126
452InCTF 2020100.00000.384
274CyBRICS CTF 2020200.00000.793
472csictf 20201328.00001.434
232UIUCTF 2020140.00000.452
404CCTF 202026.00000.196
458rgbCTF 2020395.00000.454
138TSG CTF 2020156.00000.938
192ASIS CTF Quals 202080.00001.412
494redpwnCTF 20202022.00002.157
104UUTCTF 2020175.00000.841
407Zh3r0 CTF204.00000.251
145WeCTF 2020110.00000.448
2298NahamCon CTF75.00000.258
348Really Awesome CTF 20201900.00002.520
912HSCTF 7500.00000.745
444castorsCTF2050.00000.139
388Hack-A-Sat Qualifiers16.00000.165
100m0leCon CTF 2020 Teaser205.00001.687
541TJCTF 2020165.00001.334
71DEF CON CTF Qualifier 2020450.00007.024
722De1CTF 202027.00000.091
257Covid-19 CTF211.00000.000
95IJCTF 2020200.00000.583
221Houseplant CTF 20203550.00002.593
123WPICTF 2020876.00007.178
342PlaidCTF 20201.00000.287
480DawgCTF 2020695.00001.516
821TG:HACK 2020197.00000.458
552VirSecCon CTF590.00002.477
145Midnight Sun CTF 2020 Quals324.00003.162
428AUCTF 20202341.00001.357
294VolgaCTF 2020 Qualifier160.00001.358
69FireShell CTF 20201261.00003.565
128Securinets CTF Quals 2020866.00001.603
424riftCTF50.00000.240
57TAMUctf 20204843.00000.000
54b01lers CTF803.00003.189
117ångstromCTF 20202360.000014.233
276zer0pts CTF 2020100.00000.290
99UTCTF 20202398.00002.187
259Aero CTF 2020100.00000.422
74Pragyan CTF 2020450.00003.804
727NeverLAN CTF 2020350.00000.356
167riceteacatpanda3161.00002.252

Overall rating place: 190 with 116.478 pts in 2019

Country place: 22

PlaceEventCTF pointsRating points
331KipodAfterFree CTF 201910.00000.297
318X-MAS CTF 2019325.00000.460
705OverTheWire Advent Bonanza 201958.00000.164
135TUCTF 20195881.000012.017
338D^3CTF 201910.00000.000
24RITSEC CTF 20195167.00009.247
96Pwn2Win CTF 2019124.00001.746
80Newbie CTF(N-CTF) 20194182.00000.000
275Hack.lu CTF 2019105.00001.089
287HITCON CTF 2019 Quals50.00001.122
63Square CTF 20191150.00004.046
127Rooters CTF564.00001.615
124Syskron Security CTF 20191401.00004.002
180Balsn CTF 2019106.00000.471
43BSides Delhi CTF 20191423.00002.318
284PwnThyBytes CTF 20191.00000.091
930picoCTF 201911201.00000.000
133Teaser Dragon CTF 2019189.00002.101
136InCTF 2019150.00000.950
51SEC-T CTF 2019743.00003.105
62Newark Academy CTF 20195685.000015.969
89CSAW CTF Qualification Round 20191501.000012.216
166DefCamp CTF Qualification 20196.00000.165
173Affinity CTF 2019 - Quals261.00000.896
91N1CTF 201912.00000.310
133TokyoWesterns CTF 5th 2019305.00008.754
74Chaos Communication Camp 2019204.00001.567
39h4ckc0n 20192140.00006.613
26Saudi CTF2700.00000.000
73redpwnCTF 20192545.00004.776
43Crypto CTF 2019604.00003.810
114De1CTF 2019527.00001.353
165CyBRICS CTF Quals 2019130.00001.031
25peaCTF 20198550.00000.000
106ISITDTU CTF 2019 Quals610.00001.163
1012HSCTF 6131.00000.197
773DEF CON CTF Qualifier 2019100.00001.633
103INS'hAck 2019501.00003.154
37UUTCTF 2019845.00004.965
44Blaze CTF 2019840.00006.565
516ASIS CTF Quals 201911.00000.238
993ångstromCTF 201950.00000.234
340PlaidCTF 201911.00000.462
24WPICTF 20191581.00005.554
117Byte Bandits CTF 2019126.00001.097
196ENCRYPT CTF801.00004.399
175VolgaCTF 2019 Qualifier400.00003.485
75Securinets CTF Quals 20193709.00003.757
1700CTF/TCTF 2019 Quals75.00001.571
62CONFidence CTF 2019 Teaser301.00003.163
417UTCTF 2019400.00000.421
40Pragyan CTF 20191975.000012.994
48Aero CTF 2019923.00003.796
166BSidesSF 2019 CTF163.00000.795
191TAMUctf 198289.000013.856
13STEM CTF: Cyber Challenge 20191100.000010.489
11BITSCTF 20191544.000014.320
77nullcon HackIM 2019598.00002.000

Overall rating place: 191 with 98.653 pts in 2018

Country place: 20

PlaceEventCTF pointsRating points
36X-MAS CTF 20184153.00008.253
157hxp CTF 2018101.00001.514
64OverTheWire Advent Bonanza 2018150.00000.837
16Pwn2Win CTF 20181221.00009.852
36BCTF 2018945.00002.482
28TUCTF 20188688.000022.528
28RITSEC CTF 20183411.000010.129
15Square CTF 201874157.000021.070
16P.W.N. CTF1664.00009.252
60BSides Delhi CTF 2018526.00003.422
130HITCON CTF 2018307.00004.384
122Teaser Dragon CTF 201878.00001.073
155CSAW CTF Qualification Round 20181301.00007.280

Organized CTF events

NameWeight
BlueHens CTF 202434.05
BlueHens CTF 202324.61
BlueHens CTF 202224.61
BlueHens CTF 202122.62

Team members

Team writeups

EventTaskAction
BlueHens CTF 2023Simp 2/2 [369]read writeup
BlueHens CTF 2023Simp 1/2 [152]read writeup
WolvCTF 2023Homework Help [265]read writeup
ångstromCTF 2022dreams [210]read writeup
RITSEC CTF 2022Spaced Out [370]read writeup
BlueHens CTF 2021aHead Of The curve (Probably) [493]read writeup
BlueHens CTF 2021conFidential_searcH_and_dEstroy [500]read writeup
ISITDTU CTF 2019 QualsRecovery [100]read writeup
ISITDTU CTF 2019 QualsPytecode [100]read writeup
TUCTF 2018apl read writeup
Square CTF 2018C5: de-anonymization read writeup
Square CTF 2018C2: flipping-bits read writeup