Pdfy Htb Writeup Upd Now

Entering a standard URL like http://google.com confirms the functionality—the application fetches the page and returns a PDF version of it.

If using wkhtmltopdf in production, ensure it is updated and configured with --disable-local-file-access to prevent this exact type of leak.

This writeup explores , a web-based Hack The Box (HTB) challenge categorized as "Easy." This challenge is a classic introduction to Server-Side Request Forgery (SSRF) , demonstrating how an application that renders web pages into PDFs can be coerced into leaking sensitive internal files. Challenge Overview Category: Web Difficulty: Easy pdfy htb writeup upd

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.

Leak the contents of /etc/passwd to retrieve the hidden flag. Primary Vulnerability: SSRF via the wkhtmltopdf tool. 1. Initial Enumeration Entering a standard URL like http://google

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".

If the application can fetch external web pages, can it fetch internal resources? Inputting file:///etc/passwd or http://localhost directly often results in a "URL not allowed" or similar error message, indicating a basic blacklist or security filter is in place. 2. Identifying the Technology Leak the contents of /etc/passwd to retrieve the hidden flag

Official PDFy Discussion - Page 2 - Challenges - Hack The Box