https://qooah.com/2014/02/14/%e5%b7%b2%e6%9c%89850000%e5%80%8b%e7%a7%bb%e5%8b%95%e8%a8%ad%e5%82%99%e8%a2%ab%e7%ac%ac%e4%b8%80%e4%be%8bandroid-bootkit%e6%84%9f%e6%9f%93/