Dead Code Injection

Dead Code Injection is the practice of inserting blocks of code into a program that are never actually executed but serve to confuse an analyst or automated tool. This "dead" or "junk" code can mimic the structure of real logic, contain misleading variables, or perform meaningless calculations.

Its purpose is to increase the size and complexity of the code, making it harder for an attacker to identify the real, functional logic. When an analyst is looking at the code, they have to spend time determining which parts are actually doing something and which are just noise.

This is a common and effective obfuscation technique that is relatively easy to implement but can be very effective at slowing down manual analysis. It is often used in combination with other techniques like control flow flattening to create a dense, confusing codebase.

While it does not change the functionality of the program, it significantly increases the cognitive load for anyone trying to understand it. It is a simple but powerful tool in the obfuscator's toolkit.