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_extracted/messaging_event.proto

@@ -0,0 +1,89 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package reporting;
+
+// Describes a Firebase Messaging event on a client.
+// LINT.IfChange
+message MessagingClientEvent {
+  // The project number used to send the message.
+  int64 project_number = 1;
+
+  // The message id aka persistent id.
+  string message_id = 2;
+
+  // The instance id or fid of the app the message is sent to.
+  string instance_id = 3;
+
+  enum MessageType {
+    UNKNOWN = 0;
+    DATA_MESSAGE = 1;
+    TOPIC = 2;
+    DISPLAY_NOTIFICATION = 3;
+  }
+
+  // The type of the message.
+  MessageType message_type = 4;
+
+  enum SDKPlatform {
+    UNKNOWN_OS = 0;
+    ANDROID = 1;
+    IOS = 2;
+    WEB = 3;
+  }
+
+  // The platform of the recipient.
+  SDKPlatform sdk_platform = 5;
+
+  // The package name for Android apps or the bundle id for iOS apps.
+  string package_name = 6;
+
+  // The collapse key set for this message.
+  string collapse_key = 7;
+
+  // Priority level of the message.
+  // 5 = normal, 10 = high
+  int32 priority = 8;
+
+  // TTL for the message, if set.
+  int32 ttl = 9;
+
+  // The topic the message is sent to.
+  string topic = 10;
+
+  // An id generated by the server to group all messages belonging to a single
+  // request together.
+  int64 bulk_id = 11;
+
+  enum Event {
+    UNKNOWN_EVENT = 0;
+    MESSAGE_DELIVERED = 1;
+    MESSAGE_OPEN = 2;
+  }
+  // The status for the event being logged.
+  Event event = 12;
+
+  // Label provided by developer for analytics purposes.
+  string analytics_label = 13;
+
+  // The id of the Firebase notifications campaign
+  int64 campaign_id = 14;
+
+  // The name of the Firebase notifications campaign ("Notification name"
+  // parameter set in campaign composer in Firebase console).
+  string composer_label = 15;
+}
+// LINT.ThenChange(//depot/google3/logs/proto/firebase/cloud_messaging/client/messaging_event.proto)