linux/x86 system-beep shellcode 45 bytes

/* By Thomas Rinsma <me[at]th0mas.nl> (16 apr. 2008) Shellcode makes system speaker beep once, 45 bytes: ; int fd = open("/dev/tty10", O_RDONLY); push byte 5 pop eax cdq push edx push 0x30317974 push 0x742f2f2f push 0x7665642f mov ebx, esp mov ecx, edx int 80h ; ioctl(fd, KDMKTONE (19248), 66729180); mov ebx, eax push byte 54 pop eax mov ecx, 4294948047 not ecx mov edx, 66729180 int 80h */ main() { char shellcode[] = "\x6a\x05\x58\x99\x52\x68\x74\x79\x31\x30\x68\x2f\x2f\x2f\x74" "\x68\x2f\x64\x65\x76\x89\xe3\x89\xd1\xcd\x80\x89\xc3\x6a\x36" "\x58\xb9\xcf\xb4\xff\xff\xf7\xd1\xba\xdc\x34\xfa\x03\xcd\x80"; (*(void (*)()) shellcode)(); }