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/api/SessionSubscriber.java

@@ -0,0 +1,71 @@
+package com.google.firebase.sessions.api;
+
+import com.google.android.gms.measurement.internal.a;
+import kotlin.Metadata;
+import kotlin.jvm.internal.Intrinsics;
+
+@Metadata(d1 = {"\u0000(\n\u0002\u0018\u0002\n\u0002\u0010\u0000\n\u0000\n\u0002\u0010\u000b\n\u0002\b\u0002\n\u0002\u0018\u0002\n\u0002\b\u0003\n\u0002\u0010\u0002\n\u0000\n\u0002\u0018\u0002\n\u0002\b\u0003\bf\u0018\u00002\u00020\u0001:\u0002\r\u000eJ\u0010\u0010\t\u001a\u00020\n2\u0006\u0010\u000b\u001a\u00020\fH&R\u0012\u0010\u0002\u001a\u00020\u0003X¦\u0004¢\u0006\u0006\u001a\u0004\b\u0002\u0010\u0004R\u0012\u0010\u0005\u001a\u00020\u0006X¦\u0004¢\u0006\u0006\u001a\u0004\b\u0007\u0010\b¨\u0006\u000f"}, d2 = {"Lcom/google/firebase/sessions/api/SessionSubscriber;", "", "isDataCollectionEnabled", "", "()Z", "sessionSubscriberName", "Lcom/google/firebase/sessions/api/SessionSubscriber$Name;", "getSessionSubscriberName", "()Lcom/google/firebase/sessions/api/SessionSubscriber$Name;", "onSessionChanged", "", "sessionDetails", "Lcom/google/firebase/sessions/api/SessionSubscriber$SessionDetails;", "Name", "SessionDetails", "com.google.firebase-firebase-sessions"}, k = 1, mv = {1, 7, 1}, xi = 48)
+/* loaded from: classes3.dex */
+public interface SessionSubscriber {
+
+    @Metadata(d1 = {"\u0000\f\n\u0002\u0018\u0002\n\u0002\u0010\u0010\n\u0002\b\u0005\b\u0086\u0001\u0018\u00002\b\u0012\u0004\u0012\u00020\u00000\u0001B\u0007\b\u0002¢\u0006\u0002\u0010\u0002j\u0002\b\u0003j\u0002\b\u0004j\u0002\b\u0005¨\u0006\u0006"}, d2 = {"Lcom/google/firebase/sessions/api/SessionSubscriber$Name;", "", "(Ljava/lang/String;I)V", "CRASHLYTICS", "PERFORMANCE", "MATT_SAYS_HI", "com.google.firebase-firebase-sessions"}, k = 1, mv = {1, 7, 1}, xi = 48)
+    /* loaded from: classes3.dex */
+    public enum Name {
+        CRASHLYTICS,
+        PERFORMANCE,
+        MATT_SAYS_HI
+    }
+
+    @Metadata(d1 = {"\u0000\"\n\u0002\u0018\u0002\n\u0002\u0010\u0000\n\u0000\n\u0002\u0010\u000e\n\u0002\b\u0006\n\u0002\u0010\u000b\n\u0002\b\u0002\n\u0002\u0010\b\n\u0002\b\u0002\b\u0086\b\u0018\u00002\u00020\u0001B\r\u0012\u0006\u0010\u0002\u001a\u00020\u0003¢\u0006\u0002\u0010\u0004J\t\u0010\u0007\u001a\u00020\u0003HÆ\u0003J\u0013\u0010\b\u001a\u00020\u00002\b\b\u0002\u0010\u0002\u001a\u00020\u0003HÆ\u0001J\u0013\u0010\t\u001a\u00020\n2\b\u0010\u000b\u001a\u0004\u0018\u00010\u0001HÖ\u0003J\t\u0010\f\u001a\u00020\rHÖ\u0001J\t\u0010\u000e\u001a\u00020\u0003HÖ\u0001R\u0011\u0010\u0002\u001a\u00020\u0003¢\u0006\b\n\u0000\u001a\u0004\b\u0005\u0010\u0006¨\u0006\u000f"}, d2 = {"Lcom/google/firebase/sessions/api/SessionSubscriber$SessionDetails;", "", "sessionId", "", "(Ljava/lang/String;)V", "getSessionId", "()Ljava/lang/String;", "component1", "copy", "equals", "", "other", "hashCode", "", "toString", "com.google.firebase-firebase-sessions"}, k = 1, mv = {1, 7, 1}, xi = 48)
+    /* loaded from: classes3.dex */
+    public static final /* data */ class SessionDetails {
+        private final String sessionId;
+
+        public SessionDetails(String sessionId) {
+            Intrinsics.checkNotNullParameter(sessionId, "sessionId");
+            this.sessionId = sessionId;
+        }
+
+        public static /* synthetic */ SessionDetails copy$default(SessionDetails sessionDetails, String str, int i, Object obj) {
+            if ((i & 1) != 0) {
+                str = sessionDetails.sessionId;
+            }
+            return sessionDetails.copy(str);
+        }
+
+        /* renamed from: component1, reason: from getter */
+        public final String getSessionId() {
+            return this.sessionId;
+        }
+
+        public final SessionDetails copy(String sessionId) {
+            Intrinsics.checkNotNullParameter(sessionId, "sessionId");
+            return new SessionDetails(sessionId);
+        }
+
+        public boolean equals(Object other) {
+            if (this == other) {
+                return true;
+            }
+            return (other instanceof SessionDetails) && Intrinsics.areEqual(this.sessionId, ((SessionDetails) other).sessionId);
+        }
+
+        public final String getSessionId() {
+            return this.sessionId;
+        }
+
+        public int hashCode() {
+            return this.sessionId.hashCode();
+        }
+
+        public String toString() {
+            return a.n(new StringBuilder("SessionDetails(sessionId="), this.sessionId, ')');
+        }
+    }
+
+    Name getSessionSubscriberName();
+
+    boolean isDataCollectionEnabled();
+
+    void onSessionChanged(SessionDetails sessionDetails);
+}