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/SleepSegmentEvent.java

@@ -0,0 +1,120 @@
+package com.google.android.gms.location;
+
+import android.content.Intent;
+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 com.google.android.gms.common.internal.safeparcel.SafeParcelableSerializer;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+@SafeParcelable.Class(creator = "SleepSegmentEventCreator")
+@SafeParcelable.Reserved({1000})
+/* loaded from: classes3.dex */
+public class SleepSegmentEvent extends AbstractSafeParcelable {
+    public static final Parcelable.Creator<SleepSegmentEvent> CREATOR = new zzag();
+    public static final int STATUS_MISSING_DATA = 1;
+    public static final int STATUS_NOT_DETECTED = 2;
+    public static final int STATUS_SUCCESSFUL = 0;
+
+    @SafeParcelable.Field(getter = "getStartTimeMillis", id = 1)
+    private final long zza;
+
+    @SafeParcelable.Field(getter = "getEndTimeMillis", id = 2)
+    private final long zzb;
+
+    @SafeParcelable.Field(getter = "getStatus", id = 3)
+    private final int zzc;
+
+    @SafeParcelable.Field(getter = "getMissingDataDurationMinutes", id = 4)
+    private final int zzd;
+
+    @SafeParcelable.Field(getter = "getNinetiethPctConfidence", id = 5)
+    private final int zze;
+
+    @ShowFirstParty
+    @SafeParcelable.Constructor
+    public SleepSegmentEvent(@SafeParcelable.Param(id = 1) long j4, @SafeParcelable.Param(id = 2) long j5, @SafeParcelable.Param(id = 3) int i, @SafeParcelable.Param(id = 4) int i4, @SafeParcelable.Param(id = 5) int i5) {
+        Preconditions.checkArgument(j4 <= j5, "endTimeMillis must be greater than or equal to startTimeMillis");
+        this.zza = j4;
+        this.zzb = j5;
+        this.zzc = i;
+        this.zzd = i4;
+        this.zze = i5;
+    }
+
+    public static List<SleepSegmentEvent> extractEvents(Intent intent) {
+        ArrayList arrayList;
+        Preconditions.checkNotNull(intent);
+        if (hasEvents(intent) && (arrayList = (ArrayList) intent.getSerializableExtra("com.google.android.location.internal.EXTRA_SLEEP_SEGMENT_RESULT")) != null) {
+            ArrayList arrayList2 = new ArrayList(arrayList.size());
+            int size = arrayList.size();
+            for (int i = 0; i < size; i++) {
+                byte[] bArr = (byte[]) arrayList.get(i);
+                Preconditions.checkNotNull(bArr);
+                arrayList2.add((SleepSegmentEvent) SafeParcelableSerializer.deserializeFromBytes(bArr, CREATOR));
+            }
+            return Collections.unmodifiableList(arrayList2);
+        }
+        return Collections.EMPTY_LIST;
+    }
+
+    public static boolean hasEvents(Intent intent) {
+        if (intent == null) {
+            return false;
+        }
+        return intent.hasExtra("com.google.android.location.internal.EXTRA_SLEEP_SEGMENT_RESULT");
+    }
+
+    public boolean equals(Object obj) {
+        if (obj instanceof SleepSegmentEvent) {
+            SleepSegmentEvent sleepSegmentEvent = (SleepSegmentEvent) obj;
+            if (this.zza == sleepSegmentEvent.getStartTimeMillis() && this.zzb == sleepSegmentEvent.getEndTimeMillis() && this.zzc == sleepSegmentEvent.getStatus() && this.zzd == sleepSegmentEvent.zzd && this.zze == sleepSegmentEvent.zze) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public long getEndTimeMillis() {
+        return this.zzb;
+    }
+
+    public long getSegmentDurationMillis() {
+        return this.zzb - this.zza;
+    }
+
+    public long getStartTimeMillis() {
+        return this.zza;
+    }
+
+    public int getStatus() {
+        return this.zzc;
+    }
+
+    public int hashCode() {
+        return Objects.hashCode(Long.valueOf(this.zza), Long.valueOf(this.zzb), Integer.valueOf(this.zzc));
+    }
+
+    public String toString() {
+        return "startMillis=" + this.zza + ", endMillis=" + this.zzb + ", status=" + this.zzc;
+    }
+
+    @Override // android.os.Parcelable
+    public void writeToParcel(Parcel parcel, int i) {
+        Preconditions.checkNotNull(parcel);
+        int beginObjectHeader = SafeParcelWriter.beginObjectHeader(parcel);
+        SafeParcelWriter.writeLong(parcel, 1, getStartTimeMillis());
+        SafeParcelWriter.writeLong(parcel, 2, getEndTimeMillis());
+        SafeParcelWriter.writeInt(parcel, 3, getStatus());
+        SafeParcelWriter.writeInt(parcel, 4, this.zzd);
+        SafeParcelWriter.writeInt(parcel, 5, this.zze);
+        SafeParcelWriter.finishObjectHeader(parcel, beginObjectHeader);
+    }
+}