format MS64 COFF

section '.text' code readable executable
public main
extrn MessageBoxA
extrn ExitProcess

main:
    mov rcx, 0
    mov rdx, hello
    mov r8, hello
    mov r9, 0
    call MessageBoxA

    mov ecx, 0
    call ExitProcess

section '.data' data readable writeable
hello db 'hello world', 0