Analyzing Android Encryption Processes with Frida

analyze_android_encryption_7.js

Java.perform(function(){
    var cipher = Java.use("javax.crypto.Cipher")
    cipher.init.overload('int', 'java.security.Key', 'java.security.spec.AlgorithmParameterSpec').implementation = function(opmode,key,algorithmParameter){
        var base64 = Java.use('java.util.Base64');
        console.log("Key "+base64.getEncoder().encodeToString(key.getEncoded()));
        console.log("Opmode String: "+ this.getOpmodeString(opmode));
        console.log("Algorithm: "+this.getAlgorithm())

        this.init.overload('int', 'java.security.Key', 'java.security.spec.AlgorithmParameterSpec').call(this,opmode,key,algorithmParameter)
    }
})