A standard scan with Nmap typically reveals several open ports, including: Allows anonymous login. Port 80 (HTTP): Hosts a PRTG Network Monitor login page. Port 135/445 (RPC/SMB): Standard Windows networking ports. Phase 2: User Access (FTP & Information Disclosure)
The quickest path to the user flag involves the FTP service: netmon-htb
Searching through the PRTG configuration files (typically in C:\ProgramData\Paessler\PRTG Network Monitor ) reveals backup configuration files. Phase 3: Privilege Escalation (PRTG Exploitation) A standard scan with Nmap typically reveals several
For finding PRTG-specific RCE exploits.
If the 2018 password fails on the live login page, updating it to the current year (e.g., PrTg@dmin2019 ) often works, as highlighted by Faisal Husaini . PrTg@dmin2019 ) often works
This provides read access to the C:\Users\Public directory, where the user.txt flag is often located.