Mine

global _start
_start:

section .code
xor ebx, ebx
xor ecx, ecx
mul ecx
push 0x0a646c72
push 0x6f57206f
push 0x6c6c6548
push ebx
lea ecx, [esp]
inc ebx
push byte 0xc
pop edx
mov al, 4
int 0x80
mov al, 1
int 0x80