.net-core: Equivalent of ILDASM / ILASM

Is there the equivalent of ILDASM / ILASM for the .net-core?

Specifically, I'm looking for something that runs on Linux (Hence why the .net-core).

3 Answers

Both the ildasm and ilasm tools are built with CoreCLR from this repo: . They include similar functionality as the versions shipped with Windows (sans GUI, etc.).

There are nuget packages shipped that include them as well (), but they are platform-specific and also require a matching version of CoreCLR to use, so they are not straightforward to consume via nuget. The easiest way to run these on your platform is to just build them from source from the coreclr repo.

It does not appear there is a native Microsoft tool that serves these functions on Linux and it is not currently built into the dot-net-core.

However, Mono allows the assembly and disassembly of IL code:

Installation Instructions can be found here.

What you are looking for is:

ilasm - For assembling monodis - For disassembling 

These are found in the package mono-utils:

e.g. On Debian 8 I did the following:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF echo "deb jessie" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list sudo apt-get update apt-get install mono-devel mono-utils 

However, FYI, for those trying to create exports, Mono does not appear to handle the x64 export syntax.

Let's 'install' ildasm tool using related nuget-package:

• define RID (Runtime Identifier)

dotnet --info # execution result .. Runtime Environment: OS Name: ubuntu OS Version: 18.04 OS Platform: Linux RID: ubuntu.18.04-x64 # <---- .. 

• download the package runtime.{RID}.Microsoft.NETCore.ILDAsm. For my case it is: runtime.ubuntu.18.04-x64.Microsoft.NETCore.ILDAsm
• unarchive it and extract executable file '/runtimes/{RID}/native/ildasm'
• grant it execution permission and copy to .NET runtime folder (call dotnet --list-runtimes to list runtimes)

chmod +x ildasm sudo mv ildasm /usr/share/dotnet/shared/ 

• create symlink

ln -s /usr/share/dotnet/shared/ ildasm 

• run ildasm

./ildasm {path}/project.dll >> {path}/project.il 

The same steps are applicable for ilasm.

As an alternate way consider using dotnet-ildasm tool:

# install .net core runtime if required # sudo apt-get update; \ # sudo apt-get install -y apt-transport-https && \ # sudo apt-get update && \ # sudo apt-get install -y dotnet-runtime-3.0 # find required tool dotnet tool search ildasm # output: # Package ID Latest Version Authors Downloads Verified # --------------------------------------------------------------------------- # dotnet-ildasm 0.12.2 pjbgf 100154 # dotasm 1.0.1 DotAsm 434 # install tool dotnet tool install -g dotnet-ildasm 

Output IL to file:

# go to project folder cd ../project/bin/Debug/netx.x dotnet ildasm program.dll -o program.il