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/android/gms/location/ActivityTransitionResult.java

@@ -0,0 +1,86 @@
+package com.google.android.gms.location;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Parcel;
+import android.os.Parcelable;
+import com.google.android.gms.common.internal.Preconditions;
+import com.google.android.gms.common.internal.ShowFirstParty;
+import com.google.android.gms.common.internal.safeparcel.AbstractSafeParcelable;
+import com.google.android.gms.common.internal.safeparcel.SafeParcelWriter;
+import com.google.android.gms.common.internal.safeparcel.SafeParcelable;
+import com.google.android.gms.common.internal.safeparcel.SafeParcelableSerializer;
+import java.util.Collections;
+import java.util.List;
+
+@SafeParcelable.Class(creator = "ActivityTransitionResultCreator")
+@SafeParcelable.Reserved({1000})
+/* loaded from: classes3.dex */
+public class ActivityTransitionResult extends AbstractSafeParcelable {
+    public static final Parcelable.Creator<ActivityTransitionResult> CREATOR = new zzi();
+
+    @SafeParcelable.Field(getter = "getTransitionEvents", id = 1)
+    private final List zza;
+
+    @SafeParcelable.Field(getter = "getExtras", id = 2)
+    private Bundle zzb;
+
+    public ActivityTransitionResult(@SafeParcelable.Param(id = 1) List<ActivityTransitionEvent> list) {
+        this.zzb = null;
+        Preconditions.checkNotNull(list, "transitionEvents list can't be null.");
+        if (!list.isEmpty()) {
+            for (int i = 1; i < list.size(); i++) {
+                Preconditions.checkArgument(list.get(i).getElapsedRealTimeNanos() >= list.get(i + (-1)).getElapsedRealTimeNanos());
+            }
+        }
+        this.zza = Collections.unmodifiableList(list);
+    }
+
+    public static ActivityTransitionResult extractResult(Intent intent) {
+        if (hasResult(intent)) {
+            return (ActivityTransitionResult) SafeParcelableSerializer.deserializeFromIntentExtra(intent, "com.google.android.location.internal.EXTRA_ACTIVITY_TRANSITION_RESULT", CREATOR);
+        }
+        return null;
+    }
+
+    public static boolean hasResult(Intent intent) {
+        if (intent == null) {
+            return false;
+        }
+        return intent.hasExtra("com.google.android.location.internal.EXTRA_ACTIVITY_TRANSITION_RESULT");
+    }
+
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+        return this.zza.equals(((ActivityTransitionResult) obj).zza);
+    }
+
+    public List<ActivityTransitionEvent> getTransitionEvents() {
+        return this.zza;
+    }
+
+    public int hashCode() {
+        return this.zza.hashCode();
+    }
+
+    @Override // android.os.Parcelable
+    public void writeToParcel(Parcel parcel, int i) {
+        Preconditions.checkNotNull(parcel);
+        int beginObjectHeader = SafeParcelWriter.beginObjectHeader(parcel);
+        SafeParcelWriter.writeTypedList(parcel, 1, getTransitionEvents(), false);
+        SafeParcelWriter.writeBundle(parcel, 2, this.zzb, false);
+        SafeParcelWriter.finishObjectHeader(parcel, beginObjectHeader);
+    }
+
+    @ShowFirstParty
+    @SafeParcelable.Constructor
+    public ActivityTransitionResult(@SafeParcelable.Param(id = 1) List list, @SafeParcelable.Param(id = 2) Bundle bundle) {
+        this(list);
+        this.zzb = bundle;
+    }
+}