Build your first LLVM Obfuscator

This tutorial guides you through building a basic LLVM-based string obfuscator, focusing on LLVM's modularity and its IR-level manipulation advantages over source-level obfuscation. Instead of using language-specific macros, it works on LLVM bytecode, enabling cross-language support and keeping source code clean. The example obfuscator encodes global strings using a ROR-1 transformation and injects a decoding function into the binary to restore strings at runtime. The post also provides practical LLVM plugin registration and function injection techniques to implement the obfuscation pass.