I exploit a misconfigured Nginx alias to read the jwt.secret file, then forge an admin JWT token to access the hidden post containing the flag.
I send concurrent requests to exploit a non-atomic post count check, exceeding the 12-post threshold needed to unlock the flag endpoint.
I override the validation server via a debug cookie, serve a future-dated signed timestamp from my own server, and chain the unlocked feature into RCE to read the flag.
I race a symlink swap between a large file and /proc/pid/environ to sneak past the os.stat zero-size check and leak the flag from the environment.
I inject a reflection-based payload into an unsanitized Dynamic LINQ Where() call to execute arbitrary commands and read the flag from the filesystem.
