Novel virtual machine software protection method based on stack hiding

The invention discloses a novel virtual machine software protection method based on stack hiding, and belongs to the field of mobile application reinforcement. The method comprises the steps: analyzing a DEX file into a data structure DeHelper, enabling an instruction mapping module to add an obfuscated byte code instruction to each protected function, randomly inserting a return instruction intothe obfuscated byte code instruction, and counting the frequency of the obfuscated byte codes; enabling the instruction mapping module to perform bit operation or exchange operation on byte codes andoperands in each new byte code mapping instruction to form a new remapping instruction set B; writing an unprotected function set in the data structure DeHelper and an original SO file in the APK1 into a data file S, performing repackaging to generate the APK2 and performing signing; enabling an Android end initialization module to extract DEX and SO files of a protected App from the data file S,and creating an index and a