A simple python script to decompress LZ4 DLLs.
Check out the below link for a full post explaining why this is necessary and under what circumstances it will be helpful. https://securitygrind.com/reverse-engineering-a-xamarin-application/
./lz4_decompress input.dll
This outputs a file in the form of input_out.dll, this assembly can now be decompiled using tools such as ILSpy.