The command in the service file typically uses a or a series of obfuscated shell commands.
The file is a password-protected archive associated with the "Persistence" challenge from the 2024 HTB (Hack The Box) Cyber Apocalypse CTF (Capture The Flag) . Challenge Overview Category : Forensics / Incident Response
Decoding the payload reveals a script that communicates with a remote server or simply contains the flag in a mangled format. 54623.rar
The archive is typically protected with the standard CTF password: hackthebox . : 7z x 54623.rar
: An attacker gained access to a server and established a way to maintain access. You are provided with a compressed archive of system files (often including /etc/ , /var/log/ , or specific configuration directories). Step-by-Step Write-up 1. Extraction and Initial Analysis The command in the service file typically uses
In this specific challenge, the persistence is hidden within a .
: Look into etc/systemd/system/ for unusual service files. The archive is typically protected with the standard
: Once extracted, you will find a directory structure mimicking a Linux root filesystem. The focus is usually on common persistence locations like cron jobs, systemd services, or shell profiles ( .bashrc ). 2. Identifying the Persistence Mechanism