Kappa

“Great things are not done by impulse, but by a series of small things brought together.”

JavaScript Deobfuscation

• Skills Assessment
• ~ Summary

Summary

Congratulations on reaching the end of JavaScript Deobfuscation. We hope you can now recognize obfuscated scripts and deobfuscate them, decode their output, and replicate their functions.

The following is a summary of what we learned:

• First, we uncovered the HTML source code of the webpage and located the JavaScript code.
• Then, we learned about various ways to obfuscate JavaScript code.
• After that, we learned how to beautify and deobfuscate minified and obfuscated JavaScript code.
• Next, we went through the deobfuscated code and analyzed its main function.
• We then learned about HTTP requests and were able to replicate the main function of the obfuscated JavaScript code.
• Finally, we learned about various methods to encode and decode strings.

JavaScript Deobfuscation

1. Introduction
2. Source Code
3. Code Obfuscation
4. Basic Obfuscation
5. Advanced Obfuscation
6. Deobfuscation
7. Code Analysis
8. HTTP Requests
9. Decoding
10. Skills Assessment
11. ~ Summary