b01lersctf/bctf-infra
A writeup on the misc/bctf-infra challenge from b01lersctf. My solution races shutil.copytree, which first copies files and only applies file permissions afterwards — all triggered from within a Pyjail.
Simon
Einzinger.
Cybersecurity Student · Saarland University
A 24 year-old student writing about Capture-the-Flag (CTF) competitions, with an interest in side channels, running a little homelab K3S cluster that among other things serves this website.
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01
25. April 2026