Primer paso de la investigacion. Se aportan el .apk, las carpetas con el apk extraido y el apk descompilado. El archivo API_DOCUMENTATION.md es un archivo donde se anotaran los descubrimientos del funcionamiento de la API, y los .py son scripts para probar la funcionalidad de la API con los métodos que vayamos encontrando. Finalmente, los archivos .js son scripts de Frida para extraer informacion de la APP durante la ejecucion.

apk_decompiled/sources/com/google/firebase/components/EventBus.java

@@ -0,0 +1,116 @@
+package com.google.firebase.components;
+
+import com.google.firebase.events.Event;
+import com.google.firebase.events.EventHandler;
+import com.google.firebase.events.Publisher;
+import com.google.firebase.events.Subscriber;
+import java.util.ArrayDeque;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executor;
+
+/* JADX INFO: Access modifiers changed from: package-private */
+/* loaded from: classes3.dex */
+public class EventBus implements Subscriber, Publisher {
+    private final Executor defaultExecutor;
+    private final Map<Class<?>, ConcurrentHashMap<EventHandler<Object>, Executor>> handlerMap = new HashMap();
+    private Queue<Event<?>> pendingEvents = new ArrayDeque();
+
+    public EventBus(Executor executor) {
+        this.defaultExecutor = executor;
+    }
+
+    private synchronized Set<Map.Entry<EventHandler<Object>, Executor>> getHandlers(Event<?> event) {
+        ConcurrentHashMap<EventHandler<Object>, Executor> concurrentHashMap;
+        try {
+            concurrentHashMap = this.handlerMap.get(event.getType());
+        } catch (Throwable th) {
+            throw th;
+        }
+        return concurrentHashMap == null ? Collections.EMPTY_SET : concurrentHashMap.entrySet();
+    }
+
+    /* JADX INFO: Access modifiers changed from: private */
+    public static /* synthetic */ void lambda$publish$0(Map.Entry entry, Event event) {
+        ((EventHandler) entry.getKey()).handle(event);
+    }
+
+    public void enablePublishingAndFlushPending() {
+        Queue<Event<?>> queue;
+        synchronized (this) {
+            try {
+                queue = this.pendingEvents;
+                if (queue != null) {
+                    this.pendingEvents = null;
+                } else {
+                    queue = null;
+                }
+            } catch (Throwable th) {
+                throw th;
+            }
+        }
+        if (queue != null) {
+            Iterator<Event<?>> it = queue.iterator();
+            while (it.hasNext()) {
+                publish(it.next());
+            }
+        }
+    }
+
+    @Override // com.google.firebase.events.Publisher
+    public void publish(Event<?> event) {
+        Preconditions.checkNotNull(event);
+        synchronized (this) {
+            try {
+                Queue<Event<?>> queue = this.pendingEvents;
+                if (queue != null) {
+                    queue.add(event);
+                    return;
+                }
+                for (Map.Entry<EventHandler<Object>, Executor> entry : getHandlers(event)) {
+                    entry.getValue().execute(new e(2, entry, event));
+                }
+            } catch (Throwable th) {
+                throw th;
+            }
+        }
+    }
+
+    @Override // com.google.firebase.events.Subscriber
+    public synchronized <T> void subscribe(Class<T> cls, Executor executor, EventHandler<? super T> eventHandler) {
+        try {
+            Preconditions.checkNotNull(cls);
+            Preconditions.checkNotNull(eventHandler);
+            Preconditions.checkNotNull(executor);
+            if (!this.handlerMap.containsKey(cls)) {
+                this.handlerMap.put(cls, new ConcurrentHashMap<>());
+            }
+            this.handlerMap.get(cls).put(eventHandler, executor);
+        } catch (Throwable th) {
+            throw th;
+        }
+    }
+
+    @Override // com.google.firebase.events.Subscriber
+    public synchronized <T> void unsubscribe(Class<T> cls, EventHandler<? super T> eventHandler) {
+        Preconditions.checkNotNull(cls);
+        Preconditions.checkNotNull(eventHandler);
+        if (this.handlerMap.containsKey(cls)) {
+            ConcurrentHashMap<EventHandler<Object>, Executor> concurrentHashMap = this.handlerMap.get(cls);
+            concurrentHashMap.remove(eventHandler);
+            if (concurrentHashMap.isEmpty()) {
+                this.handlerMap.remove(cls);
+            }
+        }
+    }
+
+    @Override // com.google.firebase.events.Subscriber
+    public <T> void subscribe(Class<T> cls, EventHandler<? super T> eventHandler) {
+        subscribe(cls, this.defaultExecutor, eventHandler);
+    }
+}