Design And Implementation Of Digital Forensics System For Android Mobile Phone

With the rapid development of mobile Internet technologies,the global smartphone penetration rate has increased year by year,completely changing the way people live and work.Smartphones have become the main medium for information transmission,which stores a large amount of personal privacy information.However,a large number of criminal activities targeting mobile devices have emerged in the society,such as SMS or e-mail fraud,e-commerce fraud,infringement of intellectual property rights,dissemination of harmful information,virus software,etc.Various new criminal activities have emerged one after another,and mobile device forensics has also been followed.The development of smart phones has received extensive attention.Among them,the Android operating system has the largest mobile device market share,which is about 85.9%.Therefore,how to perform digital forensics on mobile devices under the Android operating system will be of great significance to combat crime and information security issues.This article first elaborated on the research background and significance of the system,deeply analyzed the development status and future development trend of mobile digital forensics technology at home and abroad,and introduced in detail the relevant knowledge and technologies involved in the system research process,including the Android system architecture,the Root principle.,ADB debug bridge,MySQL database,.NET Framework and Android Bootloader principles.On this basis,the overall goal of the system is proposed,the overall architecture of the system is established,and the system functions are divided;the Android mobile phone data acquisition technology is further studied,including logic acquisition,temporary root acquisition,JTAG acquisition,and ISP acquisition.The logic acquisition engine based on Root authority and the physical acquisition engine based on Qualcomm processor are designed;the framework of the data analysis system is designed and implemented,and the e-commerce application program is completed.Based on the basic principle of digital forensics,this paper researches and designs a digital forensic system for Android mobile phones that meets national conditions and laws and regulations from the perspectives of data acquisition,data analysis,and data storage.Through rigorous testing,the results show that the various functions of the system have reached the design goals,and it satisfies the needs of the judicial department for digital evidence collection.It is of great significance for maintaining national information security and ensuring social stability.