TLDR InfoSec · STRATEGIES & TACTICS

ADVANCED CYBERCHEF TECHNIQUES - DEFEATING NANOCORE OBFUSCATION WITH MATH AND FLOW CONTROL

embeeresearch.io5 min read

Summary from the TLDR InfoSec newsletter

Security researchers utilized CyberChef to deobfuscate a Nanocore VBS loader, which encoded ASCII characters using mathematical operations and hexadecimal values. They utilized subsection tools and flow control to isolate operators, convert hex, perform calculations, and decode ASCII, demonstrating how advanced techniques can reverse complex obfuscations.