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
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
Check for API keys or database passwords in config.js or .env . codem-chat.rar
Found a .git folder inside the RAR? Use a tool like GitTools to recover deleted commits that might contain the flag.
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
Look for how the application handles incoming messages. Is there a lack of sanitization that could lead to XSS (Cross-Site Scripting)?
In Node.js chat apps, check if the merge or clone functions are used on user-provided JSON, which could lead to Remote Code Execution (RCE). Key files might include app
Install the unrar utility via sudo apt install unrar and use unrar x codem-chat.rar .