Zero days aren't magic--they're missed opportunities. From Day Zero to Zero Day teaches you how to find them before anyone else does.

In this hands-on guide, award-winning white-hat hacker Eugene "Spaceraccoon" Lim breaks down the real-world process of vulnerability discovery. You'll retrace the steps behind past CVEs, analyze open source and embedded targets, and build a repeatable workflow for uncovering critical flaws in code.

Whether you're new to vulnerability research or sharpening an existing skill set, this book will show you how to think--and work--like a bug hunter.

You'll learn how to:

• Identify promising targets across codebases, protocols, and file formats.
  
• Trace code paths with taint analysis and map attack surfaces with precision.
  
• Reverse engineer binaries using Ghidra, Frida, and angr.
  
• Apply coverage-guided fuzzing, symbolic execution, and variant analysis.
  
• Build and validate proof-of-concept exploits to demonstrate real-world impact.
  

If you're ready to stop reading write-ups and start writing them, From Day Zero to Zero Day is your guide.