/*
Name   : 53 bytes "high" frequency system beep x86 linux
Date   : Tue Jun  1 14:25:27 2010
Author : gunslinger_ <yudha.gunslinger[at]gmail.com>
Web    : http://devilzc0de.org
blog   : http://gunslingerc0de.wordpress.com
tested on : linux debian (must run as root!) 
*/

char *shellcode=
    "\xeb\x24"                    /* jmp    0x8048086 */
    "\x31\xc0"                    /* xor    %eax,%eax */
    "\xb0\x05"                    /* mov    $0x5,%al */
    "\x5b"                        /* pop    %ebx */
    "\x89\xd1"                    /* mov    %edx,%ecx */
    "\xcd\x80"                    /* int    $0x80 */
    "\x89\xc3"                    /* mov    %eax,%ebx */
    "\x6a\x36"                    /* push   $0x36 */
    "\x58"                        /* pop    %eax */
    "\xb9\xcf\xb4\xff\xff"        /* mov    $0xffffb4cf,%ecx */
    "\xf7\xd1"                    /* not    %ecx */
    "\xba\xdc\x01\xa6\x03"        /* mov    $0x3a601dc,%edx */
    "\xcd\x80"                    /* int    $0x80 */
    "\x31\xc0"                    /* xor    %eax,%eax */
    "\xfe\xc0"                    /* inc    %al */
    "\x31\xdb"                    /* xor    %ebx,%ebx */
    "\xcd\x80"                    /* int    $0x80 */
    "\xe8\xd7\xff\xff\xff"        /* call   0x8048062 */
    "\x2f"                        /* das     */
    "\x64"                        /* fs */
    "\x65"                        /* gs */
    "\x76\x2f"                    /* jbe    0x80480bf */
    "\x74\x74"                    /* je     0x8048106 */
    "\x79\x31"                    /* jns    0x80480c5 */
    "\x30"                        /* .byte 0x30 */
    "";

int main(void)
{
    ((void (*)(void)) shellcode)();
    return 0;
}