2024-10-31
StellarJWT - JWT Exploitation and Chained SUID Privilege Escalation
Technical writeup detailing the compromise of the 'StellarJWT' challenge. The methodology involves identifying and decoding an exposed JSON Web Token (JWT) for user enumeration, followed by a dictionary attack using Hydra for SSH access. Privilege escalation is achieved through a chained exploitation of NOPASSWD SUID binaries: using 'socat' for horizontal movement and 'chown' for '/etc/passwd' modification to gain final root access.