Decompilation
What is decompilation?
Compilation is the act of transforming a high-level language, into a low-level language such as machine code or bytecode. Decompilation is the reverse. It is the act of transforming a low-level language into a high-level language. Java source code is compiled into an intermediate language known as Java bytecode.
Step-by-Step Java Decompilation Example
On this page we present a step by step decompilation of the Jasmin code in listing 1 using a stack evaluation method and taking advantage of Java to Java bytecode patterns.
Listing 1
An Evaluation of Current Java Bytecode Decompilers
Decompilation of Java bytecode is the act of transforming Java bytecode to Java source code. Although easier than that of decompilation of machine code, problems still arise in Java bytecode decompilation. These include type inference of local variables and exception-handling.
Since the last such evaluation (2003) several new commercial, free and open-source Java decompilers have appeared and some of the older ones have been updated.
MPhil Transfer Report
Decompilation of Java bytecode is the act of transforming Java bytecode to Java source code. Although easier than that of decompilation of machine code, problems still arise in Java bytecode decompilation. These include type inference of local variables and exception-handling.
End of Year Review 2010 - Java Attacks & Defenses
Decompilation is a problem for the software industry, with the global revenue loss due to software piracy estimated to be more than $50 billion in 2008. There are several Java decompilers available but none are 100% effective, and many are obsolete/unmaintained.
We found Java Decompiler, JODE and Dava to be good Java decompilers but not perfect. Dava is particularily suited to aribtrary bytecode, while others are suited to javac generated bytecode.
SCAM2009 Presentation - Decompiling Java
Decompilation of Java bytecode is the act of transforming Java bytecode to Java source code. Although easier than that of decompilation of machine code, problems still arise in Java bytecode decompilation.
End of Year Review 2009 - Decompiling Java
Decompilation is a problem for the software industry, with the global revenue loss due to software piracy estimated to be more than $50 billion in 2008. There are several Java decompilers available but none are 100% effective, and many are obsolete/unmaintained.
We found Java Decompiler, JODE and Dava to be good Java decompilers but not perfect. Dava is particularily suited to aribtrary bytecode, while others are suited to javac generated bytecode.
Spring Review Week 2009: Obfuscating Transformations for Decompilation Resistant Java
Computer programs are written by a programmer in an English-like programming language, known as source-code. There are many programming languages available to programmers who can choose a language for their specific needs.
Decompiling Java - Working Document
Decompiling Java is a work-in-progress containing mostly background information relating to decompilation, obfuscation and watermarking.
