Covert Java™: Techniques for Decompiling, Patching, and Reverse Engineering

Chapter 16. Intercepting Control Flow

	“Nothing is so simple it cannot be misunderstood.”
	--Freeman's Law

IN THIS CHAPTER

• Control Flow Defined 155

• Intercepting System Errors 155

• Intercepting System Streams 156

• Intercepting a Call to System.exit 158

• Reacting to a JVM Shutdown Using Hooks 160

• Intercepting Methods with a Dynamic Proxy 160

• The Java Virtual Machine Profiler Interface 163

• Quick Quiz 164

• In Brief 164

Control Flow Defined

Control flow is a sequence of execution of methods and instructions by a thread. The Java virtual machine (JVM) executes Java bytecode instructions in the order in which they are found in the class file. The control flow can be programmed using conditional statements such as if, else, and for or by invoking a method. Intercepting ...