Assembler NASM Macho64.asm

global start

section .text
start:
    mov         rax, 0x2000004 
    mov         rdi, 1         
    mov         rsi, msg
    mov         rdx, msg.len
    syscall

    mov         rax, 0x2000001 
    mov         rdi, 0
    syscall

section .data
msg:    db      "Hello World", 10
.len:   equ     $ - msg