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/DetectedActivity.java

@@ -0,0 +1,82 @@
+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.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 java.util.Comparator;
+import kotlinx.coroutines.debug.internal.DebugCoroutineInfoImplKt;
+
+@SafeParcelable.Class(creator = "DetectedActivityCreator")
+@SafeParcelable.Reserved({1000})
+/* loaded from: classes3.dex */
+public class DetectedActivity extends AbstractSafeParcelable {
+    public static final int IN_VEHICLE = 0;
+    public static final int ON_BICYCLE = 1;
+    public static final int ON_FOOT = 2;
+    public static final int RUNNING = 8;
+    public static final int STILL = 3;
+    public static final int TILTING = 5;
+    public static final int UNKNOWN = 4;
+    public static final int WALKING = 7;
+
+    @SafeParcelable.Field(id = 1)
+    int zzb;
+
+    @SafeParcelable.Field(id = 2)
+    int zzc;
+    public static final Comparator zza = new zzk();
+    public static final Parcelable.Creator<DetectedActivity> CREATOR = new zzl();
+
+    @SafeParcelable.Constructor
+    public DetectedActivity(@SafeParcelable.Param(id = 1) int i, @SafeParcelable.Param(id = 2) int i4) {
+        this.zzb = i;
+        this.zzc = i4;
+    }
+
+    @ShowFirstParty
+    public final boolean equals(Object obj) {
+        if (obj instanceof DetectedActivity) {
+            DetectedActivity detectedActivity = (DetectedActivity) obj;
+            if (this.zzb == detectedActivity.zzb && this.zzc == detectedActivity.zzc) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public int getConfidence() {
+        return this.zzc;
+    }
+
+    public int getType() {
+        int i = this.zzb;
+        if (i > 22 || i < 0) {
+            return 4;
+        }
+        return i;
+    }
+
+    @ShowFirstParty
+    public final int hashCode() {
+        return Objects.hashCode(Integer.valueOf(this.zzb), Integer.valueOf(this.zzc));
+    }
+
+    public String toString() {
+        int type = getType();
+        return "DetectedActivity [type=" + (type != 0 ? type != 1 ? type != 2 ? type != 3 ? type != 4 ? type != 5 ? type != 7 ? type != 8 ? type != 16 ? type != 17 ? Integer.toString(type) : "IN_RAIL_VEHICLE" : "IN_ROAD_VEHICLE" : DebugCoroutineInfoImplKt.RUNNING : "WALKING" : "TILTING" : "UNKNOWN" : "STILL" : "ON_FOOT" : "ON_BICYCLE" : "IN_VEHICLE") + ", confidence=" + this.zzc + "]";
+    }
+
+    @Override // android.os.Parcelable
+    public void writeToParcel(Parcel parcel, int i) {
+        Preconditions.checkNotNull(parcel);
+        int beginObjectHeader = SafeParcelWriter.beginObjectHeader(parcel);
+        SafeParcelWriter.writeInt(parcel, 1, this.zzb);
+        SafeParcelWriter.writeInt(parcel, 2, this.zzc);
+        SafeParcelWriter.finishObjectHeader(parcel, beginObjectHeader);
+    }
+}