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Comprehensive Overview of Reverse Engineering and Decompilation Techniques

This overview discusses the necessity and applications of reverse engineering, highlighting its role in recovering lost information, creating effective system documentation, and assisting in maintenance. It covers the identification of side effects and anomalies, migration to new hardware/software platforms, and facilitating software reuse. Additionally, examples of Java decompilers, like Jadclipse, ClassCracker, and DeCafe Pro, are provided, along with guidance on recovering bytecode from class files using tools such as javap. The overview also mentions Reflector and ILSpy as valuable decompilation tools.

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Comprehensive Overview of Reverse Engineering and Decompilation Techniques

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  1. Reverse Engineering

  2. Overview

  3. Overview

  4. Overview

  5. Need for RE • Recovery of lost information • providing proper system documentation • Assisting with maintenance • identification of side effects and anomalies • Migration to another hw/sw platform • Facilitating software reuse

  6. Example: Java Decompiler • How to recover bytecode from .class file under Unix/Win with JDK? % javap -c <filename> % javap -help (to see the options) • Java Decompilers - Jadclipse • ”ClassCracker” http://www.pcug.org.au/~mayon/ • “DeCafe Pro" from DeCafe, France athttp://decafe.hypermart.net/index.htm

  7. Class cracker JD

  8. Decompile .net • There are two tools that I like to use to decompile • Reflector • www.reflector.net (paid) • ILSpy • http://wiki.sharpdevelop.net/ILSpy.ashx (free)

  9. ILSpy

  10. Reflector

  11. Swf decompiler for flash

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