.net 8 Windows Form error

[lethach]

D:\Projects\KysoPDF_NET8\KySoPDF\KySoPDF\tools\BitMono>BitMono.CLI.exe -f "D:\Projects\KysoPDF_NET8\KySoPDF\KySoPDF\bin\Release\net8.0-windows\KySoPDF.dll"
[2025-10-01 17:42:03 INF][BitMono.CLI.Program] File: D:\Projects\KysoPDF_NET8\KySoPDF\KySoPDF\bin\Release\net8.0-windows\KySoPDF.dll
[2025-10-01 17:42:03 INF][BitMono.CLI.Program] Dependencies (libs): D:\Projects\KysoPDF_NET8\KySoPDF\KySoPDF\bin\Release\net8.0-windows
[2025-10-01 17:42:03 INF][BitMono.CLI.Program] Everything is seems to be ok, starting obfuscation..
[2025-10-01 17:42:03 INF][BitMono.CLI.Program]
___ _ __ __ ___
/ _ )() // |/ /__ ___ ___
/ _ / / / /|/ / _ / _ / _
///_// /_/_////___/
https://github.com/sunnamed434/BitMono
BitMono v0.35.6.0
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.BitMonoObfuscator] Module KySoPDF, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.BitMonoObfuscator] Module Target Framework: .NETCoreApp 8.0
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.BitMonoObfuscator] Module PE TimeDateStamp: 01/09/2068 09:51:13
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.BitMonoObfuscator] Module culture: unknown
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.BitMonoObfuscator] BitMono running on: OS: Microsoft Windows NT 10.0.26100.0, .NET 8.0.20 v8.0, x64 bits
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.Notifiers.ProtectionsNotifier] (1) Enabled protection(s): AntiILdasm
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.Notifiers.ProtectionsNotifier] (16) Disabled protection(s): AntiDe4dot, AntiDebugBreakpoints, AntiDecompiler, BillionNops, BitDecompiler, BitDotNet, BitMethodDotnet, BitMono, BitTimeDateStamp, CallToCalli, DotNetHook, FullRenamer, NoNamespaces, ObjectReturnType, StringsEncryption, UnmanagedString
[2025-10-01 17:42:04 INF][BitMono.Obfuscation.BitMonoObfuscator] Starting resolving dependencies...
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Runtime, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Windows.Forms, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Collections, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.ComponentModel.Primitives, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.ComponentModel.EventBasedAsync, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: DocumentFormat.OpenXml, Version=3.3.0.0, Culture=neutral, PublicKeyToken=8fb06cb64d019a17
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Security.Cryptography, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: Syncfusion.Pdf.NET, Version=31.1.22.0, Culture=neutral, PublicKeyToken=null
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Drawing.Common, Version=8.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: Syncfusion.Compression.NET, Version=31.1.22.0, Culture=neutral, PublicKeyToken=null
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.ComponentModel.TypeConverter, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: PdfiumViewer, Version=2.14.5.0, Culture=neutral, PublicKeyToken=97c6f28bf5a3df6e
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Threading, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Diagnostics.Process, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Drawing.Primitives, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: Microsoft.Win32.Registry, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Configuration.ConfigurationManager, Version=8.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Management, Version=9.0.0.9, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Text.Json, Version=9.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Linq, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Collections.NonGeneric, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: DocumentFormat.OpenXml.Framework, Version=3.3.0.0, Culture=neutral, PublicKeyToken=8fb06cb64d019a17
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Console, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.Windows.Forms.Primitives, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: System.ComponentModel, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] Successfully resolved dependency: Syncfusion.Licensing, Version=31.1.22.0, Culture=neutral, PublicKeyToken=632609b4d040f6b4
[2025-10-01 17:42:05 INF][BitMono.Obfuscation.BitMonoObfuscator] References resolve have been completed!
Something went wrong! System.ArgumentException: Instruction does not have a parameter or parameter index operand.
at AsmResolver.DotNet.Code.Cil.CilInstructionExtensions.GetParameterIndex(CilInstruction instruction) in //src/AsmResolver.DotNet/Code/Cil/CilInstructionExtensions.cs:line 261
at AsmResolver.DotNet.Code.Cil.CilInstructionExtensions.GetParameter(CilInstruction instruction, ParameterCollection parameters) in //src/AsmResolver.DotNet/Code/Cil/CilInstructionExtensions.cs:line 236
at AsmResolver.DotNet.Code.Cil.CilInstructionCollection.ExpandMacro(CilInstruction instruction) in //src/AsmResolver.DotNet/Code/Cil/CilInstructionCollection.cs:line 259
at AsmResolver.DotNet.Code.Cil.CilInstructionCollection.ExpandMacros() in //src/AsmResolver.DotNet/Code/Cil/CilInstructionCollection.cs:line 229
at BitMono.Obfuscation.BitMonoObfuscator.ExpandMacros() in /home/runner/work/BitMono/BitMono/src/BitMono.Obfuscation/BitMonoObfuscator.cs:line 211
at BitMono.Core.Pipeline.InvokablePipeline.InvokeMethodAsync(Delegate invokeMethod) in /home/runner/work/BitMono/BitMono/src/BitMono.Core/Pipeline/InvokablePipeline.cs:line 43
at BitMono.Core.Pipeline.InvokablePipeline.InvokeInternalAsync(Delegate invokeMethod) in /home/runner/work/BitMono/BitMono/src/BitMono.Core/Pipeline/InvokablePipeline.cs:line 32
at BitMono.Obfuscation.BitMonoObfuscator.ProtectAsync() in /home/runner/work/BitMono/BitMono/src/BitMono.Obfuscation/BitMonoObfuscator.cs:line 58
at BitMono.Obfuscation.Starter.BitMonoStarter.StartAsync(StarterContext context, IDataWriter dataWriter) in /home/runner/work/BitMono/BitMono/src/BitMono.Obfuscation/Starter/BitMonoStarter.cs:line 25
at BitMono.CLI.Program.Main(String[] args) in /home/runner/work/BitMono/BitMono/src/BitMono.CLI/Program.cs:line 70
at BitMono.CLI.Program.Main(String[] args) in /home/runner/work/BitMono/BitMono/src/BitMono.CLI/Program.cs:line 92

criticals.json
logging.json
obfuscation.json
protections.json

[lethach]

I erase logs and run again. I attached this log:
bitmono-2025-10-01-17-44-12.log

[sunnamed434]

Hi @lethach
That's a bug of AsmResolver (which we use to edit the Assembly), see issue 678 and PR with a fix, hope they would release that fix as soon as possible.

As a fix for now - try to use older version of BitMono from releases.

[lethach]

Thank you! I used version 0.35.5 with some protections (attached file below) and it worked. Enabling other protections prevents the program from starting.

protections.json

[sunnamed434]

@lethach which other protections u tried that prevents program from starting? There some protections that are only compatible with Mono/Unity, but not with normal .NET, e.g.: BitMono, BitDotNet, BitDecompiler, AntiDecompiler, etc

You can see a whole list of protections in docs here, you can also see there if that protection is compatible with your runtime.