Bastion
Gaining Access
Nmap scan revealed a lot of ports:
Windows Backup
When checking the SMB shares, we fnd that the Backups share does not require credentials to access.
When checking the files, we can see that there's a WindowsImageBackup directory within it.
Within it, there was a few .vhd files.
These file can actually be mounted and they do not requrie credentials at all!
From here, because this is a Windows backup, we can directly go to the C:\Windows\System32\config file to use the SYSTEM and SAM registry folders and dump the credentials via samdump2.
Then, this hash is easily cracked using hashcat.
Afterwards, we can SSH in as the L4mpje user.
Privilege Escalation
mRemoteNG
In the user's directory, I enumerated all the directories that I could using dir /all.
Within the AppData\Roaming folder, we can find some files related to mRemoteNG.
Checking the confCons.xml file, we can find an encrypted password for the Administrator.
mRemoteNG passwords can be decrypted using this repository:
Then, we can SSH in as the administrator using this password.
