Some Protections don't work

[rafak360]

I'm using the GUI ConfuserEx.exe.

My Project is a CLR Windows Forms C++/CLI .NET Framework 4.5 Windows 10

Preset: Maximum

Protections:

typescramble throws the following exception:

[ERROR] Failed to calcuate maxstack.

anti tamper throws the following exception:

[ERROR] Unknown error occurred.
Exception: System.InvalidOperationException: Reusing old body locations is enabled. Can't remove bodies.
   at dnlib.DotNet.Writer.MethodBodyChunks.Remove(MethodBody methodBody)
   at Confuser.Protections.AntiTamper.NormalMode.CreateSections(ModuleWriterBase writer)
   at Confuser.Protections.AntiTamper.NormalMode.WriterEvent(Object sender, ModuleWriterEventArgs e)
   at dnlib.DotNet.Writer.EventHandler2`1.Invoke(Object sender, TEventArgs e)
   at dnlib.DotNet.Writer.ModuleWriterOptionsBase.RaiseEvent(Object sender, ModuleWriterEventArgs e)
   at dnlib.DotNet.Writer.ModuleWriterBase.OnWriterEvent(ModuleWriterEvent evt)
   at dnlib.DotNet.Writer.ModuleWriterBase.Metadata_MetadataEvent(Object sender, MetadataWriterEventArgs e)
   at dnlib.DotNet.Writer.Metadata.OnMetadataEvent(MetadataEvent evt)
   at dnlib.DotNet.Writer.NativeModuleWriter.Write()
   at dnlib.DotNet.Writer.NativeModuleWriter.WriteImpl()
   at dnlib.DotNet.Writer.ModuleWriterBase.Write(Stream dest)
   at Confuser.Core.ConfuserEngine.WriteModule(ConfuserContext context)
   at Confuser.Core.ProtectionPipeline.ExecuteStage(PipelineStage stage, Action`1 func, Func`1 targets, ConfuserContext context)
   at Confuser.Core.ConfuserEngine.RunPipeline(ProtectionPipeline pipeline, ConfuserContext context)
   at Confuser.Core.ConfuserEngine.RunInternal(ConfuserParameters parameters, CancellationToken token)

resources makes my application not able to launch.

The rest of the Protections seem to be working fine.

Is there a fix for these issues though?

[mkaring]

The typescramble protection is unlikely to work in a mixed-mode assembly.
The resource protection got some bugfixes since the last version, maybe it works with the current snapshot.

For the anti tamper protection, I found the cause for your issue and fixed it in the #292 pull request. It would you great if you could check with this build if your issue has been resolved.

[rafak360]

The typescramble protection is unlikely to work in a mixed-mode assembly.
The resource protection got some bugfixes since the last version, maybe it works with the current snapshot.

For the anti tamper protection, I found the cause for your issue and fixed it in the #292 pull request. It would you great if you could check with this build if your issue has been resolved.

Thanks @mkaring that build solved the anti tamper issue in my CLR Project, however typescramble and resource still a problem.

[mkaring]

@rafak360: I'm looking into the issue with the resource protection.
As for the typescamble: Don't get your hopes up. This isn't a protection that should be enabled for the entire assembly …

[ElektroKill]

I could look into the typescramble problem but I would need a small program to reproduce the error. If you are able to provide that I would be thankful!

[rafak360]

I could look into the typescramble problem but I would need a small program to reproduce the error. If you are able to provide that I would be thankful!

@ElektroKill I made a simple program to expose that error in typescramble, it's just an Empty CLR Project generated by Visual Studio, here it is:
Small Program

[mkaring]

@ElektroKill: The linked pull request, now contains two failing tests. One for the resources protection and one for the typescramble. The second is all yours.

[ElektroKill]

I've identified the TypeScrambler issue to be caused by improper detection of whether the method has a return type. The C++/CLI runtime contains a lot of modifier signatures over the actual return types which cause the detection to fail. I am working on a fix right now.