The walkthrough describes a hacking challenge involving a Local File Inclusion (LFI) vulnerability and demonstrates how to exploit it to retrieve a hidden flag.
Initial reconnaissance with nmap shows an open HTTP port with Apache, leading to exploration of a Lo-Fi music website with dynamic queries.
Intriguing parameters in the URL hint at an LFI vulnerability triggered by accessing the sensitive /etc/passwd file, proving access to arbitrary system files.
Finally, the flag is captured from a file named flag.txt by manipulating the vulnerable query.
Lessons learned emphasise the importance of secure coding practices to prevent such vulnerabilities, such as input validation, whitelisting, and proper access controls.
The walkthrough offers a concise outline of the entire process, making it easier for novices to understand the sequence of events and the reasoning behind each step.