I'm Using .Net Reflector with Reflexil to edit or view .net Assembly codes.

I see this picture in reflexil.net:


It Shows the "Compile" window. How can I see this window and edit codes?

  • 3
    Try dnSpy, it has far superior decompilation and it properly supports this feature and many others (debugging) without plugins.
    – mrexodia
    Dec 24 '16 at 14:48

Decompile a function with .NET Reflector, and in the Instructions tab of the Reflexil window, right click on an instruction and choose Replace all with code...:


  • Thanks @jason-geffner. Now I can open Compile Window. But I can't find the codes of decompiled program and all events are empty! Jun 22 '16 at 15:24

This blog that I wrote a a few years ago describes all the steps to modify a .net binary with Reflector and Reflexil. Not sure which steps you're missing but I recommended to read&compare.

However, Today I would recommend Telerik's JustDecompile though as it has built in de-obfuscation (de4dot) and has an option to replace a section with code which is much, much, easier than writing replacement code in IL.

/EDIT: Here's a blog I wrote about using JustDecompile and Reflector to modify a .net binary.

  • Your blog link is dead.
    – L29Ah
    Oct 31 '18 at 10:07
  • @L29Ah I checked both links and they seem to be fine, maybe temporary issue or maintenance when you checked?
    – Remko
    Nov 9 '18 at 13:31
  • Nope, check out this traceroute: bpaste.net/show/8f65550128e1
    – L29Ah
    Nov 12 '18 at 15:47

There is a nice tool to play with .NET assemblies (https://www.digitalbodyguard.com/graywolf.html)

GrayWolf – Is a reverse engineering tool (focused on .NET Framework Applications)

Currently - is in a late beta stage It is similar to IL-Spy but this has a focue on edit/attack. GrayWolf was a tool I created to carry out research. The focus is on editing applications to make change quickly.

What can it do: DE-ObfuScatE,Edit IL(Live), Add payloads, Edit attributes(public/privet), Copy strong names signing on EXE/DLL

  • is this program free? Sep 28 '16 at 13:42
  • @Ayrese yes it is Sep 30 '16 at 9:37
  • 4
    While GrayWolf was a great tool in its day, I think that there are more modern and better tools for .NET reversing, such as dnSpy. dnSpy offers a nicer UI and a more robust engine (de4dot's) for handling heavily obfuscated binaries, while being able to do everything (as far as I am aware) GrayWolf can - including but not limited to IL editing.
    – Martin
    Nov 21 '16 at 21:26
  • This does not answer the question which was specifically about Reflexil
    – Igor Skochinsky
    Dec 21 '16 at 11:15

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