Reverse%20Engineering

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Reverse Engineering
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Overview
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Overview
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Overview
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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

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Example Java Decompiler

• How to recover bytecode from .class file under
  Unix/Win with JDK?
• javap -c ltfilenamegt
• javap -help (to see the options)
• Java Decompilers
• - Jadclipse
• ClassCracker http//www.pcug.org.au/mayon/
• DeCafe Pro" from DeCafe, France at
  http//decafe.hypermart.net/index.htm

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Class cracker JD
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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)

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ILSpy
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Reflector
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Swf decompiler for flash