Pdfy Htb Writeup Upd Now

Download the resulting PDF. Inside, you will see the text content of the server's password file. Scroll through the entries to find the HTB flag, which is typically appended as a comment or a user entry.

Upon launching the challenge, you are greeted with a simple web interface that prompts for a URL. The application’s stated purpose is to "turn your favorite web pages into portable PDF documents". pdfy htb writeup upd

Since the application blocks direct file:// or localhost inputs, the standard bypass is to host a malicious script on your own server. This script will redirect the wkhtmltopdf engine to the local file you want to read. Download the resulting PDF

Your server responds with a 302 Redirect to file:///etc/passwd . Upon launching the challenge, you are greeted with

Always validate and sanitize user-provided URLs. Blacklisting "localhost" or "file://" is rarely sufficient, as redirects can often bypass these filters.

You need a way to serve a 302 Redirect . You can use a simple PHP script or a Python server to achieve this. Use code with caution. Step B: Expose Your Server