From a Single IP to Exfiltrated Passwords in a PNG: My First Freelance Pentest Engagement

Based on the provided script and context, it appears you are conducting a security assessment or penetration test on a web application that has an exploitable vulnerability in one of its components. The specific issue being exploited is a file reading vulnerability via the XMLHttpRequest object in JavaScript, which allows you to read files from the server's filesystem by specifying the local file path as the URL.

Here are some key points and observations about your script:

1. Target URLs: You're targeting critical system files such as /proc/self/environ, configuration files like /data/wwwroot/api-php/config/database.php and environment variables stored in .env files, which often contain sensitive information like database credentials or API keys.

2. File Reading Functionality:

   • The read_file() function sends a POST request to the vulnerable endpoint with a crafted JSON payload that includes JavaScript code to read the specified file using an XMLHttpRequest.
   • It then extracts the filename of the generated image from the server's response and downloads it, extracting any text content (potentially including sensitive data) via the strings command.

3. Prioritization:

   • The script prioritizes reading files that are likely to contain important information such as database credentials

Read the full article at DEV Community

---

Want to create content about this topic? Use Nemati AI tools to generate articles, social posts, and more.