basic loader (32bit/64bit)

[icrypto]

.Your code does not work as such. I ran it with some change

:MASM64 Assembler doesn't accept

.386
.model flat,stdcall

:and this Entrypoint format

start:
         
end start

 : Instead it accept this Entrypoint format

start proc

start endp

.For 64bit build I'm using ml64.exe from Visual Studio
?Can you successfully build 64bit application with your modified code