JavaScript Obfuscation | Dead Code Injection, String Encoding & More
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🖥️ Presentation
https://tinyurl.com/javascript-obfusc...
📌 About
Did you know that carefully encoded source code can help you bypass basic security filters and make it more difficult for novice defenders to analyse the code?
In HackerForce's latest video, sunflower covers everything you need to know about obfuscation using JavaScript, including:
The importance of JavaScript obfuscation and its practical applications in red team assessments
An exploration of the 'javascript-obfuscator' tool and its presets, including various options such as dead code injection, string array encoding in Base64, and other advanced techniques
Utilising 'javascript-obfuscator' to obfuscate our previously crafted HTML smuggling payload
And much more
No adversary delivers payloads unobfuscated; therefore, whether you're a defender or an offensive engineer, this knowledge is essential!
📚 Resources
'javascript-obfuscator' tool: https://github.com/javascript-obfusca...
'javascript-obfuscator' tool's online version: https://obfuscator.io/
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⏱️ Timestamps
00:00 Introduction
01:21 What is payload obfuscation?
03:20 Tool: 'javascript-obfuscator'
03:49: Installing 'javascript-obfuscator'
04:52: Our structure of payload delivery
05:51: Using 'javascript-obfuscator'
06:22 'javascript-obfuscator' presets
07:42 Analysing 'javascript-obfuscator' obfuscation
08:52 Using the 'high-obfuscation' preset
09:45 Implementing dead code injection
11:22 Implementing string array encoding (Base64)
12:59 Converting numbers to expression equivalent
14:06 Upcoming
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