keyalg RSA -keysize 2048 -validity 10000 keytool -genkey -v -keystore my-release-key.keystore -alias alias_name \.If prompted for a password, create your own password. The APK must be signed before you run on your device.īefore signing an apk, create a key if you don’t have an existing one. This will create a my_application.apkfile:Īfter recompiling (building) the apk the new apk will be generated in Dist folder. Once you have made your changes, you need to repack the APK. You can just change the orientation of the main activity in the Manifest file or you can change the app name from strings.xml file.(just to check the recompiled apk is working or not).# Now use the JD (Java Decompiler) to inspect the source # Convert the Dex files into standard class files If you wish to decompile any java files, you can do the following: You can still make some changes in manifest.xml and res folder. You can skip this part if you don’t wish to check the Code. This below part is to see convert Dex files to java files. This will create an “application” directory with assets, resources, compiled code, etc. dex2jar - Converts Android dex files to class/jar files.įirst, Take any apk file and unpack(decompile) it.zipalign - archive alignment tool, that comes with the Android SDK.jarsigner Java tool for signing JAR/APK files, that comes with the JDK.keytool - Java tool for creating keys/certs, that comes with the JDK.In this case we are using to extract files from apk and rebuild. apktool - tool for reverse engineering Android apk files. Decompile and Recompile An android APK using Apktool
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