The mobile botnet, developed from the traditional PC-based botnets, has become a practical underlying trend.In this paper, we design a mobile botnet, which exploits a novel com mand and control (C&C) strategy named Push-Styled C&C.It utilizes Google cloud messaging (GCM) service as the botnet channel.Compared with traditional botnet, Push-Styled C&C avoids direct communications between botmasters and bots, which makes mobile botnets more stealthy and resilient.Since mobile devices users are sensitive to battery power and traffic consump tion, Push-Styled botnet also applies adaptive network connection strategy to reduce traffic consumption and cost.To prove the effi cacy of our design, we implemented the prototype of Push-Style C&C in Android.The experiment results show that botnet traffic can be concealed in legal GCM traffic with low traffic cost.