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DE upbhack

Also known as
  • /upb/hack

Academic team Paderborn University

Website: https://upbhack.de

Twitter: https://twitter.com/upbhack

Sign in to join the team.



Professional Sanity Check Solvers ™️
We ❤️ sanity checks

Participated in CTF events

Overall rating place: 287 with 171.774 pts in 2025

Country place: 12

PlaceEventCTF pointsRating points
54BuckeyeCTF 20253007.000015.765
18DEADFACE CTF 20257571.000028.913
62Hack.lu CTF 2025926.000018.257
424QnQSec CTF 2025250.00000.629
324jailCTF 2025100.00000.237
457SunshineCTF 2025183.00001.320
84CrewCTF 2025450.00002.705
328ImaginaryCTF 20251100.00007.377
229BrunnerCTF 20251686.00001.887
178scriptCTF 20254232.00008.389
86UIUCTF 2025681.000014.263
117DownUnderCTF 20252841.000022.861
186L3akCTF 2025986.00001.796
46Grey Cat The Flag 20256528.000013.010
81Midnight Sun CTF 2025 Quals233.00006.235
79DamCTF 20252650.000021.099
63UniVsThreats 25 CTF644.00002.602
129UMDCTF 20253004.000013.322
54Texas Security Awareness Week 20251811.00006.975
93squ1rrel CTF 20252236.00004.984
231Cyber Apocalypse CTF 2025: Tales from Eldoria37525.000015.897
147PwnMe CTF Quals 2025459.00001.347
51x3CTF 2025 (feat. mvm)868.00003.715
78IrisCTF 20251860.00006.680

Overall rating place: 271 with 158.171 pts in 2024

Country place: 16

PlaceEventCTF pointsRating points
139BackdoorCTF 2024110.00000.911
61HTB University CTF 2024: Binary Badlands18575.00000.000
82World Wide CTF 2024831.00002.628
165SECCON CTF 13 Quals143.00003.979
169SunshineCTF 2024111.00000.748
166DEADFACE CTF 20241953.00006.329
5Haus der Flaggen/Flag Heist8925.000021.965
94IRON CTF 20242662.00004.194
102UIUCTF 20243272.000018.236
11CyberSecurityRumble Quals3877.000061.753
76UMDCTF 20242867.000010.053
54Midnight Sun CTF 2024 Quals625.00005.049
84TAMUctf 20241638.00005.651
45Cyber Apocalypse 2024: Hacker Royale17100.000020.961
414osu!gaming CTF 2024794.00002.201

Overall rating place: 148 with 222.955 pts in 2023

Country place: 11

PlaceEventCTF pointsRating points
1337C3 Potluck CTF1635.00008.554
53BackdoorCTF 20237426.000012.391
94HTB University CTF 2023: Brains & Bytes2550.00007.692
63 GlacierCTF 2023832.00003.513
811337UP LIVE CTF1960.00003.493
139CakeCTF 2023338.00000.000
20LakeCTF Quals 231332.000010.345
4THE HAXORCIST - A HALLOWEEN CTF6100.000023.172
598N1CTF 202350.00001.036
67DEADFACE CTF 20233800.000012.849
95DefCamp Capture the Flag (D-CTF) 2023 Quals273.00002.302
36Hack.lu CTF 2023738.000016.053
7SunshineCTF 20232896.000033.949
94CSAW CTF Qualification Round 20233110.00006.777
7nullcon HackIM CTF Goa 20234645.000020.003
53corCTF 2023896.00004.800
253 TFC CTF 2023350.00001.566
29ENOWARS 728064.791344.403
135zer0pts CTF 2023231.00003.268
818AmateursCTF 202310.00000.039
10CyberSecurityRumble Quals4342.000017.320
85UIUCTF 2023799.00008.515
126Google Capture The Flag 2023419.00006.117
80NahamCon CTF 20237084.000012.608
47justCTF 2023868.00007.721
24DanteCTF 20233029.000010.449
28TJCTF 2023878.00007.395
86BYUCTF 20235088.00004.772
18DeadSec CTF 20232018.00008.403
37p4ctf 2023 teaser224.00005.334
86HeroCTF v52305.00004.220
35UMDCTF 20238545.000016.998
5Space Heroes 202313730.000021.041
83Midnight Sun CTF 2023 Quals408.00003.408
120Bucket CTF 20232574.00004.095
53LINE CTF 2023322.00002.886
54Cyber Apocalypse 2023: The Cursed Mission16675.000017.166
135UTCTF 2025 2023998.00002.708
121LA CTF 20235104.00008.223
185DiceCTF 2023230.00001.696

Overall rating place: 119 with 200.235 pts in 2022

Country place: 10

PlaceEventCTF pointsRating points
51X-MAS CTF 20221497.00003.795
19KITCTFCTF 20223146.00007.880
16HTB University CTF 2022 : Supernatural Hacks5000.000017.366
4Hacker Things CTF 20224425.000016.512
282GlacierCTF 202250.00000.347
19SunshineCTF 20221338.00007.934
217Square CTF 2022151.00001.397
14COMPFEST CTF 20221449.00008.807
56SECCON CTF 2022 Quals779.000019.085
30p4ctf 2022235.00003.858
21BuckeyeCTF 20223592.000010.934
23Hack.lu CTF 20221863.000026.863
56Jade CTF1495.00004.005
201DEADFACE CTF1030.00003.125
107ASIS CTF Quals 2022204.00005.599
22CyberSecurityRumble CTF2924.000022.455
328SekaiCTF 2022239.00000.614
54CakeCTF 2022661.00000.000
853corCTF 20221.00000.032
144BDSec CTF 2022850.00003.313
236ImaginaryCTF 20221250.00002.856
54vsCTF 20222769.00004.916
72Google Capture The Flag 2022646.00009.697
69Access Denied CTF 20226353.00005.967
406Tenable CTF 2022700.00001.876
24n00bzCTF 20225831.00007.042
113DEF CON CTF Qualifier 202273.00002.834
61BYUCTF 20222238.00000.000
164Hack-A-Sat 3 Qualifiers36.00000.595
64saarCTF 20228310.39876.237
312Cyber Apocalypse CTF 2022: Intergalactic Chase 4275.00005.476
26San Diego CTF 20223905.000010.803
225EZ CTF | Beginner Friendly1745.00000.000
280ångstromCTF 2022850.000010.200
61Digital Overdose Conference 2022 CTF750.00004.616
12PatriotCTF8051.000010.549
130NahamCon CTF 20224453.00004.487
143Incognito 3.0280.00000.771
13CUCTF 1.02281.000015.982
71b01lers CTF657.00005.810
53THCon 2k22198.00001.905
114TAMUctf 2022900.00002.766
12CrewCTF 20229050.00009.711
105DCTF 2022500.00001.843
142Securinets CTF Quals 2022 100.00000.623
16JerseyCTF II8385.000019.156
31Winja CTF | Nullcon Berlin 2022903.00005.675
174PlaidCTF 20221.00000.570
94HackPack CTF 2022400.00003.698
241 nullcon HackIM 20221.00000.106
4Imperial CTF 22 Quals855.000024.043
114Midnight Sun CTF 2022 Quals29.00000.365
181UMassCTF 2022464.00001.561
55Space Heroes 20222644.00005.861
212RITSEC CTF 2022500.00001.626
31LINE CTF 2022686.00004.109
13Wolverine Security Conference/CTF7461.000015.394
11OFPPT-CTF Morocco20022.000021.120
46VishwaCTF 20227467.00007.882
291zer0pts CTF 2022115.00000.844
65UTCTF 2025 20224576.00008.437
235DaVinciCTF 2022348.00000.926
1181337UP LIVE CTF1373.00003.003
13Engineer CTF7264.000017.653
72Pragyan CTF 2022583.00000.757
107UMDCTF 20222668.00003.464
85FooBar CTF 2022505.00001.965
111D^3CTF 202210.00000.217
297TSJ CTF 2022100.00000.774
152MHSCTF 2022500.00000.000
43VU CYBERTHON 2022203.00006.466
67Decompetition v2.0243.61001.238
62Hayyim CTF 2022139.00000.853
37STAY ~/ CTF 20229261.94003.904
22Cyber Grabs CTF 0x03 Junior3650.000014.001
103DiceCTF 2022503.00002.199
82Insomni'hack teaser 2022161.00001.312
537Real World CTF 4th32.00000.505
78KnightCTF 20223375.000011.449
110TetCTF 2022200.00000.937

Overall rating place: 134 with 163.015 pts in 2021

Country place: 8

PlaceEventCTF pointsRating points
4BackdoorCTF 20212443.000021.860
8X-MAS CTF 2021 Second Weekend9205.000012.007
120hxp CTF 202185.00001.695
437SECCON CTF 202153.00000.997
106idekCTF 2021608.00001.117
232NITECTF100.00000.286
93VULNCON CTF 202110.00000.307
55HITCON CTF 2021354.00006.431
65MetaCTF CyberGames 20217975.000013.115
2172021 Metasploit community CTF100.00001.440
53Dragon CTF 2021437.000013.208
8CyberSecurityRumble CTF3819.000026.104
216Balsn CTF 202150.00000.560
111Block CTF 202150.00001.065
47HTB Uni CTF 2021 - Quals3025.00007.477
44K3RN3LCTF1893.00004.665
156DUNGEON - BSides Ahmedabad CTF 2021157.00001.134
37DamCTF 20213772.000011.978
65Hack.lu CTF 2021632.000012.195
144BuckeyeCTF 2021351.00001.479
51ASIS CTF Quals 2021369.000012.248
44DEADFACE CTF5275.000012.411
63pbctf 2021492.00002.707
136Digital Overdose 2021 Autumn CTF1675.00005.183
6TastelessCTF 20212405.000027.890
167TSG CTF 2021300.00002.635
12SunshineCTF 2021813.00009.649
142CSAW CTF Qualification Round 20211938.00000.000
40ALLES! CTF 20211053.00009.867
49WMCTF 2021452.00002.153
302FwordCTF 202110.00000.092
48corCTF 20214630.00008.934
168Really Awesome CTF 20211300.00003.148
116InCTF 2021210.00001.239
20BSides Noida CTF3756.00007.809
144Crypto CTF 202160.00000.743
146Google Capture The Flag 2021223.00004.079
362Cyber Apocalypse 20215200.00006.506
38Midnight Sun CTF 2021 Quals1023.000011.270
114NahamCon CTF 20216425.00005.645

Overall rating place: 152 with 162.110 pts in 2020

Country place: 7

PlaceEventCTF pointsRating points
52Brixel CTF winter edition615.00000.000
95hxp CTF 2020129.00002.488
21Dragon CTF 20201717.000038.916
56SunshineCTF 2020656.00004.596
152CyberYoddha CTF 20204200.00007.717
5CyberSecurityRumble CTF6838.000022.837
15DamCTF 20204665.000012.001
331TastelessCTF 20201.00000.080
39TokyoWesterns CTF 6th 20201533.000032.683
47ALLES! CTF 2020845.00004.657
99Google Capture The Flag 2020475.00007.379
131Crypto CTF 202053.00000.485
53InCTF 20201801.00005.791
15rgbCTF 202012318.000014.145
111Zh3r0 CTF2317.00002.436
734DEF CON CTF Qualifier 2020200.00002.790
87WPICTF 20201176.00009.655
930PlaidCTF 20201.00000.115
13HackPack CTF 20205199.00000.000
41Midnight Sun CTF 2020 Quals1124.000010.987
206Insomni'hack teaser 202072.00001.980

Overall rating place: 202 with 111.742 pts in 2019

Country place: 9

PlaceEventCTF pointsRating points
49hxp 36C3 CTF624.00004.497
40watevrCTF 2019887.00004.421
83X-MAS CTF 20192160.00002.846
627OverTheWire Advent Bonanza 201958.00000.168
196CTFZone 2019 Quals1.00000.175
13RITSEC CTF 20196098.000011.492
38Square CTF 20192150.00007.482
100Syskron Security CTF 20191641.00004.701
54Real World CTF 2019 Quals128.00001.631
65TokyoWesterns CTF 5th 2019625.000017.937
39Crypto CTF 2019700.00004.385
60CyBRICS CTF Quals 2019472.00003.616
91Google Capture The Flag 2019 (Quals)455.000010.473
9Midnight Sun CTF 2019 Finals6915.000012.108
214Facebook CTF 2019582.00000.741
9FAUST CTF 201914414.468820.407
130DEF CON CTF Qualifier 2019315.00005.353
160PlaidCTF 2019261.00004.876
13Midnight Sun CTF 2019 Quals4606.000016.913
66CONFidence CTF 2019 Teaser295.00003.083

Overall rating place: 153 with 116.974 pts in 2018

Country place: 9

PlaceEventCTF pointsRating points
5035C3 CTF466.000012.845
1088X-MAS CTF 20186.00000.033
158Pwn2Win CTF 201870.00000.645
77RITSEC CTF 20182111.00006.079
106Square CTF 201829502.00007.955
61BSides Delhi CTF 2018501.00003.272
79HITCON CTF 2018407.00006.055
99Teaser Dragon CTF 201878.00001.120
72DefCamp CTF Qualification 2018407.00003.000
328WhiteHat Grand Prix 2018 – Quals10.00000.156
194TJCTF 2018345.00003.768
39CODE BLUE CTF 2018 Quals284.00002.434
45CTFZone 2018 Quals464.00002.663
29Meepwn CTF Quals 20182520.00006.935
28Google Capture The Flag 2018 (Quals)1630.000021.341
9Midnight Sun CTF 2018 Finals2098.000010.621
15FAUST CTF 20188771.000014.595
44RCTF 20181965.00004.741
44DEF CON CTF Qualifier 2018948.000017.661
40ASIS CTF Quals 2018991.000010.675
21Midnight Sun CTF 2018 Quals810.00008.268

Team members

Team writeups

EventTaskAction
UIUCTF 2025ai-clippy read writeup
CyberSecurityRumble CTFPDFCARNAGE [486]read writeup
CyberSecurityRumble CTFV1RUSCHECK0R3000 [200]read writeup
CyberSecurityRumble CTFROBERTISAGANGSTA [318]read writeup
CyberSecurityRumble CTFTHREE LITTLE KEYS [474]read writeup
CyberSecurityRumble CTFSCRAMBLE [378]read writeup
CrewCTF 2022Policy Violation Pt.2 [648]read writeup
CrewCTF 2022Policy Violation Pt.1 [142]read writeup
CrewCTF 2022Em31l Pt.2 [906]read writeup
CrewCTF 2022Em31l Pt.1 [767]read writeup
CrewCTF 2022Paint [767]read writeup
CrewCTF 2022Screenshot Pt. 3 [513]read writeup
CrewCTF 2022Screenshot Pt. 2 [498]read writeup
CrewCTF 2022Screenshot Pt. 1 [353]read writeup
Imperial CTF 22 QualsEscape Master [75]read writeup
BackdoorCTF 2021beyond the mountain [500]read writeup
hxp CTF 2021gipfel [85]read writeup
DamCTF 2021md5flow [499]read writeup
TokyoWesterns CTF 6th 2020circular [370]read writeup
TokyoWesterns CTF 6th 2020 The Melancholy of Alice [242]read writeup
TokyoWesterns CTF 6th 2020sqrt [216]read writeup
PlaidCTF 2019R u SAd? [150]read writeup
Midnight Sun CTF 2019 QualsDr. Evil [893]read writeup
Midnight Sun CTF 2019 QualsMarcoolio [725]read writeup
Midnight Sun CTF 2019 QualsTulpan257 [451]read writeup
Midnight Sun CTF 2019 QualsPolyshell [482]read writeup
Midnight Sun CTF 2019 Qualsopen-gyckel-crypto [226]read writeup
Midnight Sun CTF 2019 QualsEZDSA [223]read writeup
WCTF 2018 ONLINErsa [120]read writeup
Google Capture The Flag 2018 (Quals)Bookshelf [363]read writeup
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