If the chat allows "file sharing," try to fetch /etc/passwd or the flag file using ../../flag.txt . 4. Conclusion & Flag
The provided file is a . After downloading, the first step is to check its contents without fully extracting to see the file structure. Command: unrar l codem-chat.rar codem-chat.rar
Install the unrar utility via sudo apt install unrar and use unrar x codem-chat.rar . If the chat allows "file sharing," try to
Look for how the application handles incoming messages. Is there a lack of sanitization that could lead to XSS (Cross-Site Scripting)? If the chat allows "file sharing
The archive typically contains source code for a Node.js or Python-based chat application. Key files might include app.js , package.json , or a hidden .env file. 2. Static Analysis