Decompiling an obfuscated .NET executable

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3.67/5 (3 votes)

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C#3.0

C#

I would like to know whether there are any techniques for decompiling a managed exe which has been obfuscated. Thanks.

Posted 24-Oct-10 1:54am

amshan1

Updated 24-Oct-10 2:31am

Nish Nishant

v2

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Toli Cuturicu 24-Oct-10 14:44pm

Somebody obfuscated it exactly for this reason: to stop you from decompiling it. So, don't attempt to do it! It is illegal.

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OriginalGriff · Answer 1 · 2010-10-24T01:59:00

Solution 1

The whole idea of using obfuscation is that you don't.
You decompile the exe before obfuscation, if you don't have the source.

Posted 24-Oct-10 1:59am

OriginalGriff

Nish Nishant · Answer 2 · 2010-10-24T02:20:00

Solution 2

There are some so-called de-obfuscators available for obfuscated .NET executables, but it's very unlikely that you will get the original code back. It would be far easier to run the de-compiled but obfuscated C# code through a debugger to figure out what the code does.

Posted 24-Oct-10 2:20am

Nish Nishant

Comments

amshan1 24-Oct-10 8:40am

thanks for your replay, just little help me out where can i get the de-obfuscators for. Net exe, any links or any idea will appresiate.

Nish Nishant 24-Oct-10 8:47am

I'm sorry but I've never had to use one so far. You'd have to google or bing them out I guess.

And again, it will be far more effective to debug and step through the decompiled code, and then refactor as you see fit until you have reasonably readable code. If your interests are academic and you want to understand the workings of the code that should be quite sufficient.

amshan1 24-Oct-10 9:10am

thnks i wil tryied