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/sessions/SessionsActivityLifecycleCallbacks.java

@@ -0,0 +1,94 @@
+package com.google.firebase.sessions;
+
+import android.app.Activity;
+import android.app.Application;
+import android.os.Bundle;
+import kotlin.Metadata;
+import kotlin.Unit;
+import kotlin.jvm.internal.Intrinsics;
+
+@Metadata(d1 = {"\u00000\n\u0002\u0018\u0002\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010\u000b\n\u0002\b\u0006\n\u0002\u0018\u0002\n\u0002\b\u0005\n\u0002\u0010\u0002\n\u0000\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0002\b\b\bÀ\u0002\u0018\u00002\u00020\u0001B\u0007\b\u0002¢\u0006\u0002\u0010\u0002J\u001a\u0010\u0010\u001a\u00020\u00112\u0006\u0010\u0012\u001a\u00020\u00132\b\u0010\u0014\u001a\u0004\u0018\u00010\u0015H\u0016J\u0010\u0010\u0016\u001a\u00020\u00112\u0006\u0010\u0012\u001a\u00020\u0013H\u0016J\u0010\u0010\u0017\u001a\u00020\u00112\u0006\u0010\u0012\u001a\u00020\u0013H\u0016J\u0010\u0010\u0018\u001a\u00020\u00112\u0006\u0010\u0012\u001a\u00020\u0013H\u0016J\u0018\u0010\u0019\u001a\u00020\u00112\u0006\u0010\u0012\u001a\u00020\u00132\u0006\u0010\u001a\u001a\u00020\u0015H\u0016J\u0010\u0010\u001b\u001a\u00020\u00112\u0006\u0010\u0012\u001a\u00020\u0013H\u0016J\u0010\u0010\u001c\u001a\u00020\u00112\u0006\u0010\u0012\u001a\u00020\u0013H\u0016R$\u0010\u0003\u001a\u00020\u00048\u0000@\u0000X\u0081\u000e¢\u0006\u0014\n\u0000\u0012\u0004\b\u0005\u0010\u0002\u001a\u0004\b\u0006\u0010\u0007\"\u0004\b\b\u0010\tR(\u0010\n\u001a\u0004\u0018\u00010\u000b2\b\u0010\n\u001a\u0004\u0018\u00010\u000b@FX\u0086\u000e¢\u0006\u000e\n\u0000\u001a\u0004\b\f\u0010\r\"\u0004\b\u000e\u0010\u000f¨\u0006\u001d"}, d2 = {"Lcom/google/firebase/sessions/SessionsActivityLifecycleCallbacks;", "Landroid/app/Application$ActivityLifecycleCallbacks;", "()V", "hasPendingForeground", "", "getHasPendingForeground$com_google_firebase_firebase_sessions$annotations", "getHasPendingForeground$com_google_firebase_firebase_sessions", "()Z", "setHasPendingForeground$com_google_firebase_firebase_sessions", "(Z)V", "lifecycleClient", "Lcom/google/firebase/sessions/SessionLifecycleClient;", "getLifecycleClient", "()Lcom/google/firebase/sessions/SessionLifecycleClient;", "setLifecycleClient", "(Lcom/google/firebase/sessions/SessionLifecycleClient;)V", "onActivityCreated", "", "activity", "Landroid/app/Activity;", "savedInstanceState", "Landroid/os/Bundle;", "onActivityDestroyed", "onActivityPaused", "onActivityResumed", "onActivitySaveInstanceState", "outState", "onActivityStarted", "onActivityStopped", "com.google.firebase-firebase-sessions"}, k = 1, mv = {1, 7, 1}, xi = 48)
+/* loaded from: classes3.dex */
+public final class SessionsActivityLifecycleCallbacks implements Application.ActivityLifecycleCallbacks {
+    public static final SessionsActivityLifecycleCallbacks INSTANCE = new SessionsActivityLifecycleCallbacks();
+    private static boolean hasPendingForeground;
+    private static SessionLifecycleClient lifecycleClient;
+
+    private SessionsActivityLifecycleCallbacks() {
+    }
+
+    public static /* synthetic */ void getHasPendingForeground$com_google_firebase_firebase_sessions$annotations() {
+    }
+
+    public final boolean getHasPendingForeground$com_google_firebase_firebase_sessions() {
+        return hasPendingForeground;
+    }
+
+    public final SessionLifecycleClient getLifecycleClient() {
+        return lifecycleClient;
+    }
+
+    @Override // android.app.Application.ActivityLifecycleCallbacks
+    public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
+        Intrinsics.checkNotNullParameter(activity, "activity");
+    }
+
+    @Override // android.app.Application.ActivityLifecycleCallbacks
+    public void onActivityDestroyed(Activity activity) {
+        Intrinsics.checkNotNullParameter(activity, "activity");
+    }
+
+    @Override // android.app.Application.ActivityLifecycleCallbacks
+    public void onActivityPaused(Activity activity) {
+        Intrinsics.checkNotNullParameter(activity, "activity");
+        SessionLifecycleClient sessionLifecycleClient = lifecycleClient;
+        if (sessionLifecycleClient != null) {
+            sessionLifecycleClient.backgrounded();
+        }
+    }
+
+    @Override // android.app.Application.ActivityLifecycleCallbacks
+    public void onActivityResumed(Activity activity) {
+        Unit unit;
+        Intrinsics.checkNotNullParameter(activity, "activity");
+        SessionLifecycleClient sessionLifecycleClient = lifecycleClient;
+        if (sessionLifecycleClient != null) {
+            sessionLifecycleClient.foregrounded();
+            unit = Unit.INSTANCE;
+        } else {
+            unit = null;
+        }
+        if (unit == null) {
+            hasPendingForeground = true;
+        }
+    }
+
+    @Override // android.app.Application.ActivityLifecycleCallbacks
+    public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
+        Intrinsics.checkNotNullParameter(activity, "activity");
+        Intrinsics.checkNotNullParameter(outState, "outState");
+    }
+
+    @Override // android.app.Application.ActivityLifecycleCallbacks
+    public void onActivityStarted(Activity activity) {
+        Intrinsics.checkNotNullParameter(activity, "activity");
+    }
+
+    @Override // android.app.Application.ActivityLifecycleCallbacks
+    public void onActivityStopped(Activity activity) {
+        Intrinsics.checkNotNullParameter(activity, "activity");
+    }
+
+    public final void setHasPendingForeground$com_google_firebase_firebase_sessions(boolean z3) {
+        hasPendingForeground = z3;
+    }
+
+    public final void setLifecycleClient(SessionLifecycleClient sessionLifecycleClient) {
+        lifecycleClient = sessionLifecycleClient;
+        if (sessionLifecycleClient == null || !hasPendingForeground) {
+            return;
+        }
+        hasPendingForeground = false;
+        sessionLifecycleClient.foregrounded();
+    }
+}