Also known as
  • MarkTeam
  • My Code Works, I Don't Know Why
  • grep -o 'flag'

Academic team Universitas Negeri Semarang

Website: https://writeups.thebusfactoris1.online

Website: https://thebusfactoris1.online

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Hi! 👋 We’re an academic CTF team from Semarang State University.

We also run a community Discord that’s open for everyone! 🎉 Inside, we’ve got a CTF bot trainer loaded with tons of challenges you can play around with—and you can even submit your solutions directly to it.

So come hang out, practice, and have fun with us!

Join our community: https://discord.gg/dEKKgVdYHr

Participated in CTF events

Overall rating place: 634 with 74.113 pts in 2025

Country place: 19

PlaceEventCTF pointsRating points
103CrewCTF 2025308.00001.912
38Nullcon Berlin HackIM 2025 CTF2353.000010.007
71KubanCTF Qualifier 202513032.00000.000
45HITCON CTF 2025671.000015.541
67SekaiCTF 2025878.00009.094
117idekCTF 2025670.00004.312
50World Wide CTF 20254315.00007.839
197DownUnderCTF 20252041.000016.326
118L3akCTF 20251534.00002.797
118R3CTF 2025600.00000.873
112IERAE CTF 2025 - GMO Cybersecurity Contest679.00003.788
154smileyCTF 2025372.00002.497

Team members

Team writeups

EventTaskAction
Nullcon Berlin HackIM 2025 CTFdecryption execution service [500-100]read writeup
Nullcon Berlin HackIM 2025 CTFField trip [500-100]read writeup
Nullcon Berlin HackIM 2025 CTFMagnetic tape [500-100]read writeup
SekaiCTF 2025Gondola read writeup
World Wide CTF 2025FaultyCurve [436]read writeup
DownUnderCTF 2025Speak Friend, and Enter [195]read writeup
L3akCTF 2025Lowkey RSA [50]read writeup
L3akCTF 2025Mersenne Mayhem [198]read writeup
L3akCTF 2025Magical Oracle [436]read writeup