Download the source code from the github and compile EvilSalsa and SalseoLoader. You will need Visual Studio installed to compile the code.
Compile those projects for the architecture of the windows box where your are going to use them(If the Windows supports x64 compile them for that architectures).
You can select the architecture inside Visual Studio in the left "Build" Tab in "Platform Target".
**(**If you can't find this options press in "Project Tab" and then in "<Project Name> Properties")
Then, build both projects (Build -> Build Solution) (Inside the logs will appear the path of the executable):
Prepare the Backdoor
First of all, you will need to encode the EvilSalsa.dll. To do so, you can use the python script encrypterassembly.py or you can compile the project EncrypterAssembly
Search for DllExport package (using Browse tab), and press Install (and accept the popup)
In your project folder have appeared the files: DllExport.bat and DllExport_Configure.bat
Uninstall DllExport
Press Uninstall (yeah, its weird but trust me, it is necessary)
Exit Visual Studio and execute DllExport_configure
Just exit Visual Studio
Then, go to your SalseoLoader folder and execute DllExport_Configure.bat
Select x64 (if you are going to use it inside a x64 box, that was my case), select System.Runtime.InteropServices (inside Namespace for DllExport) and press Apply
Open the project again with visual Studio
[DllExport] should not be longer marked as error
Build the solution
Select Output Type = Class Library (Project --> SalseoLoader Properties --> Application --> Output type = Class Library)