.386

.model flat,stdcall ; модель памяти - flat
option casemap:none

; подключение необходимых библиотек:
;-------------------------------------
include \masm32\include\windows.inc   ;
include \masm32\include\kernel32.inc  ;
includelib \masm32\lib\kernel32.lib   ;
include \masm32\include\user32.inc    ;
includelib \masm32\lib\user32.lib     ;
;-------------------------------------

; секция данных
.data
alert_upper  db "Simply program",0
alert_text   db "Hello, World!",0

; секция кода
.code
start:

   invoke MessageBox, NULL, addr alert_text, addr alert_upper, MB_OK
   invoke ExitProcess, NULL
end start