The Mono Common Intermediate Language (CIL) disassembler. More information: https://www.mono-project.com/docs/tools+libraries/tools/monodis/.
monodis path/to/assembly.exe
monodis --output=path/to/output.il path/to/assembly.exe
monodis --assembly path/to/assembly.dll
monodis --assemblyref path/to/assembly.exe
monodis --method path/to/assembly.exe
monodis --manifest path/to/assembly.dll
monodis --mresources path/to/assembly.dll