500$ Secrets: Uncovering Critical Vulnerabilities with Advanced JavaScript Analysis

About Me

Hi everyone! My name is Satyam Pawale, also known as @hackersatty in the bug bounty world. I started bug hunting in 2024 and have been passionate about finding security vulnerabilities ever since.

This blog is meant to share my experience and help others learn from it. If you like it or have any feedback, feel free to drop a comment below. Let’s get started!

JavaScript’s Secret Vault: Discovering Critical Vulnerabilities in Plain Sight

In this article, I’ll share how I uncovered a critical vulnerability in a subdomain of test.redacted.com through an in-depth JavaScript analysis. By combining various tools and techniques, I identified unrestricted access to sensitive endpoints and functionality. This write-up is a guide for bug bounty hunters looking to dive deeper into web application vulnerabilities. Stay tuned till the end for an invitation to connect with me for further insights.

Step 1: Hunting for JavaScript Files

JavaScript files are treasure troves for security researchers. My approach began with identifying and downloading JavaScript files from the target subdomain: