Infiltrator
Windows
Insane
4.4
MACHINE RATING2155
USER OWNS1744
SYSTEM OWNS31/08/2024
RELEASEDMachine Synopsis
Infiltrator is an Insane Windows Active Directory machine that starts with a website that an attacker can scrape for possible usernames on the machine. One user doesn't have Kerberos pre-authentication enabled, and his password can be cracked. Afterwards, an intricate attack chain focused on Active Directory permissions allows the attacker to get access to the machine over WinRM as the user `M.harris`. Once on the machine, the attacker can identify that the whole company communicates through the `Output Messenger` application. Infiltrating the application, switching users, reverse engineering a binary, and using the application's API, he can eventually land a shell as the user `O.martinez` on the remote machine. Afterwards, he discovers a network capture file with a backup archive and a BitLocker volume recovery key. Unlocking the volume, another backup folder contains an `ntds.dit` file from which he can read sensitive user information and find a valid password for the user `lan_managment`. This new user can read the GMSA password of the user `infiltrator_svc$`. This last user can exploit a vulnerable ESC4 certificate template. Finally, he can get the Administrator's hash and compromise the whole domain through the certificate exploitation.
Machine Matrix
