Connected — HackTheBox 🔒
A Hard Linux machine running FreePBX — full writeup locked until the box retires.
Linux
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Lost My Flag Printer — DalCTF 2026
A setuid helper pins an eBPF flag-printer into a world-accessible PROG_ARRAY then chmod 000s the program pin; loading an unprivileged socket-filter that bpf_tail_calls index 0 runs the root-loaded printer and fills the readable flag map.