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/ActivityTransitionEvent.java

@@ -0,0 +1,80 @@
+package com.google.android.gms.location;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import com.google.android.gms.common.internal.Objects;
+import com.google.android.gms.common.internal.Preconditions;
+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;
+
+@SafeParcelable.Class(creator = "ActivityTransitionEventCreator")
+@SafeParcelable.Reserved({1000})
+/* loaded from: classes3.dex */
+public class ActivityTransitionEvent extends AbstractSafeParcelable {
+    public static final Parcelable.Creator<ActivityTransitionEvent> CREATOR = new zzf();
+
+    @SafeParcelable.Field(getter = "getActivityType", id = 1)
+    private final int zza;
+
+    @SafeParcelable.Field(getter = "getTransitionType", id = 2)
+    private final int zzb;
+
+    @SafeParcelable.Field(getter = "getElapsedRealTimeNanos", id = 3)
+    private final long zzc;
+
+    @SafeParcelable.Constructor
+    public ActivityTransitionEvent(@SafeParcelable.Param(id = 1) int i, @SafeParcelable.Param(id = 2) int i4, @SafeParcelable.Param(id = 3) long j4) {
+        ActivityTransition.zza(i4);
+        this.zza = i;
+        this.zzb = i4;
+        this.zzc = j4;
+    }
+
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (!(obj instanceof ActivityTransitionEvent)) {
+            return false;
+        }
+        ActivityTransitionEvent activityTransitionEvent = (ActivityTransitionEvent) obj;
+        return this.zza == activityTransitionEvent.zza && this.zzb == activityTransitionEvent.zzb && this.zzc == activityTransitionEvent.zzc;
+    }
+
+    public int getActivityType() {
+        return this.zza;
+    }
+
+    public long getElapsedRealTimeNanos() {
+        return this.zzc;
+    }
+
+    public int getTransitionType() {
+        return this.zzb;
+    }
+
+    public int hashCode() {
+        return Objects.hashCode(Integer.valueOf(this.zza), Integer.valueOf(this.zzb), Long.valueOf(this.zzc));
+    }
+
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("ActivityType " + this.zza);
+        sb.append(" ");
+        sb.append("TransitionType " + this.zzb);
+        sb.append(" ");
+        sb.append("ElapsedRealTimeNanos " + this.zzc);
+        return sb.toString();
+    }
+
+    @Override // android.os.Parcelable
+    public void writeToParcel(Parcel parcel, int i) {
+        Preconditions.checkNotNull(parcel);
+        int beginObjectHeader = SafeParcelWriter.beginObjectHeader(parcel);
+        SafeParcelWriter.writeInt(parcel, 1, getActivityType());
+        SafeParcelWriter.writeInt(parcel, 2, getTransitionType());
+        SafeParcelWriter.writeLong(parcel, 3, getElapsedRealTimeNanos());
+        SafeParcelWriter.finishObjectHeader(parcel, beginObjectHeader);
+    }
+}