Htb Writeup Upd [upd]: Pdfy

The modified PDF file is then uploaded to the system.

The HTTP service running on port 8080 appears to be a REST API for managing PDFs.

Locate the target flag string—typically appended at the bottom of the system file or hidden in a custom directory—to complete the challenge! 🛡️ Remediation: How to Fix SSRF in PDF Generators pdfy htb writeup upd

Upon reading config.php , we discover potential hardcoded credentials or a path to a web shell. In this scenario, we find the application allows uploading files, which we can leverage. 4. Gaining Initial Foothold

Use code with caution. 2. Trigger the SSRF The modified PDF file is then uploaded to the system

\write18cat /root/root.txt

If the remote target is behaving unexpectedly, try running wkhtmltopdf locally with various inputs to understand how it handles redirects and local file protocols. 🛡️ Remediation: How to Fix SSRF in PDF

22/tcp OpenSSH 8.9p1 80/tcp nginx 1.18.0 5000/tcp Werkzeug httpd 2.3.0 (Python 3.10)