Blackberry Application - Reverse Engineering
Java code compiled for the BlackBerry goes through the following steps using the tools mentioned: Code is compiled using the javac.exe compiler, and an application JAR file is generated. At this point, all Java methods, constructs, and classes are fair game. The preverify.exe tool is run against the generated JAR files and looks for code constructs that are not allowed in JME applications (for example, calls to Java native invocation or invalid Java instructions). The pre-verifier is used in both BlackBerry and JME development. Once the pre-verifier step completes, the Classes are marked as verified. RIM’s compiler, rapc.exe, converts the verified JAR file to a BlackBerry executable COD file. Rapc is an optimizing compiler that removes symbolic information and adds RIM proprietary instructions to the binary in order to reduce size and improve performance. If the application is going to be deployed to a real device or to a simulator with security enabled, the COD file i...