Teach you how to modify IL files

A long time ago encountered a project, which called a well-encapsulated DLL, obfuscation encryption shell also scrambled name, anti-compiled out also looks like head large, direct IL modified rebuild DLL solves the problem.

Recently, you need to change one of these DLLs, log down the steps

First copy the DLL separately to see the DLL runtime

　　　

Then export the. Il file

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The following is familiar with IL can be arbitrary modification of this IL file

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Modify Complete, save

Open to

C:\WINDOWS\Microsoft.NET\Framework

Determined the folder

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727

Win+r cmd Run

Generate the IL that has just been modified, if any. res resource files need to be entered together

ilasm the source file . Il source file. res /Output= destination file . DLL /DLL

The modification succeeds.

Teach you how to modify IL files