.exe (VBs) decompile

Hi,

I have a program (written with Visual Studio 2005). It's compiled to an .exe, but now my question is if it's possible to decompile it again?

It's because I'd like to change some things to the program.
If you have experience with programming, please post here or send me a PM!

Thank you very much

 

I've not heard of tool that specifically decompiles VB.Net programs but they probably do exist.

Lutz Roeder produces a tool called Reflector that let's you look inside .Net executables and assemblies - http://www.aisto.com/roeder/dotnet/ so you can see the code. With some effort you could decompile in this way.

One problem with decompiling a .Net program is that people obfuscate programs to protect them from decompilation. If you opened the EXE with Reflector and you see meaningless names for classes and methods then it's been obfuscated and it will be harder to reconstruct the original source.

 

Thank you for your reply. I have tested the program and get this error when opening my .exe file with the Reflector:

Invalid number of data directories in NT header.

Code (markup):

 

I'm guessing here but ... some obfuscators place extra junk code into EXEs and assemblies to fool or even crash decompiler/ inspector tools like Reflector.

 

I have found another tool: VbsToExe.exe
With this you can convert VB-Scripts into EXE files, but you can also extract the original VB-Script from the EXE file. Unfortunately I'm blocked this time because of another nasty thing: a Password :s

Is there a way to find out the password (by using OllyDBG/HIEW or something?)

 

This is funny because if you'd like to change somethings to the program why not go back into the source code (that you write) and change it..

Maybe you meant... you have A program written in VB and you'd like to decompile it to the source code (because you don't have it) and make changes?

 

I never said I wrote the program ...
I said I have a program that is written with Visual Studio 2005 and I would like to change some things. Don't turn my words.

 

You may be able to make changes to the gui with a resource editor or a hex editor. Good luck.

 

Interesting thread, I think its best to redo the program if its not too hard. Please PM the program and I'll see what I can do to have your changes be done. I got some decompiles and other tools since I am a VB.Net programmer.

 

i ask the author if the software i doubt he likes it that people are decompiling his software without him knowing.