f1rst 3 min read BKCTF 2023 - Metadata checker
A writeup for the Metadata checker challenge from BKCTF 2023.
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Field notes on security research, systems, and the web — CTF writeups, infrastructure deep-dives, and the occasional certification retrospective.
2023
5 posts
f1rst 3 min read 
f1rst 3 min read RITSEC CTF 2023 Writeup
Writeup for the Web challenges of RITSEC CTF 2023.
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f1rst 4 min read The DEW - Space Heroes CTF
Writeup for The DEW challenge from Space Heroes CTF.
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f1rst 4 min read Writeup ångstromCTF 2023
Writeup for 2 challenges from ångstromCTF 2023.
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f1rst 8 min read Writeup Web 247CTF
Writeups for 247CTF web challenges: trusted client, secured session, compare the pair, and a race condition in ACID flag bank.
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