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/datatransport/cct/CctBackendFactory.java

@@ -0,0 +1,15 @@
+package com.google.android.datatransport.cct;
+
+import X1.b;
+import X1.c;
+import X1.h;
+import androidx.annotation.Keep;
+
+@Keep
+/* loaded from: classes3.dex */
+public class CctBackendFactory {
+    public h create(c cVar) {
+        b bVar = (b) cVar;
+        return new U1.c(bVar.f2012a, bVar.f2013b, bVar.f2014c);
+    }
+}

apk_decompiled/sources/com/google/android/datatransport/runtime/backends/TransportBackendDiscovery.java

@@ -0,0 +1,13 @@
+package com.google.android.datatransport.runtime.backends;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.IBinder;
+
+/* loaded from: classes3.dex */
+public class TransportBackendDiscovery extends Service {
+    @Override // android.app.Service
+    public final IBinder onBind(Intent intent) {
+        return null;
+    }
+}

apk_decompiled/sources/com/google/android/datatransport/runtime/scheduling/jobscheduling/AlarmManagerSchedulerBroadcastReceiver.java

@@ -0,0 +1,40 @@
+package com.google.android.datatransport.runtime.scheduling.jobscheduling;
+
+import R0.h;
+import W1.j;
+import W1.t;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.util.Base64;
+import c2.k;
+import c2.l;
+import g2.AbstractC0377a;
+
+/* loaded from: classes3.dex */
+public class AlarmManagerSchedulerBroadcastReceiver extends BroadcastReceiver {
+
+    /* renamed from: a, reason: collision with root package name */
+    public static final /* synthetic */ int f5509a = 0;
+
+    /* JADX WARN: Type inference failed for: r0v3, types: [java.lang.Object, java.lang.Runnable] */
+    @Override // android.content.BroadcastReceiver
+    public final void onReceive(Context context, Intent intent) {
+        String queryParameter = intent.getData().getQueryParameter("backendName");
+        String queryParameter2 = intent.getData().getQueryParameter("extras");
+        int intValue = Integer.valueOf(intent.getData().getQueryParameter("priority")).intValue();
+        int i = intent.getExtras().getInt("attemptNumber");
+        t.b(context);
+        h a2 = j.a();
+        a2.o(queryParameter);
+        a2.f1415c = AbstractC0377a.b(intValue);
+        if (queryParameter2 != null) {
+            a2.f1414b = Base64.decode(queryParameter2, 0);
+        }
+        l lVar = t.a().f1961d;
+        j b4 = a2.b();
+        ?? obj = new Object();
+        lVar.getClass();
+        lVar.f4271e.execute(new k(lVar, b4, i, obj));
+    }
+}

apk_decompiled/sources/com/google/android/datatransport/runtime/scheduling/jobscheduling/JobInfoSchedulerService.java

@@ -0,0 +1,45 @@
+package com.google.android.datatransport.runtime.scheduling.jobscheduling;
+
+import F.n;
+import R0.h;
+import W1.j;
+import W1.t;
+import android.app.job.JobParameters;
+import android.app.job.JobService;
+import android.util.Base64;
+import c2.k;
+import c2.l;
+import g2.AbstractC0377a;
+
+/* loaded from: classes3.dex */
+public class JobInfoSchedulerService extends JobService {
+
+    /* renamed from: a, reason: collision with root package name */
+    public static final /* synthetic */ int f5510a = 0;
+
+    @Override // android.app.job.JobService
+    public final boolean onStartJob(JobParameters jobParameters) {
+        String string = jobParameters.getExtras().getString("backendName");
+        String string2 = jobParameters.getExtras().getString("extras");
+        int i = jobParameters.getExtras().getInt("priority");
+        int i4 = jobParameters.getExtras().getInt("attemptNumber");
+        t.b(getApplicationContext());
+        h a2 = j.a();
+        a2.o(string);
+        a2.f1415c = AbstractC0377a.b(i);
+        if (string2 != null) {
+            a2.f1414b = Base64.decode(string2, 0);
+        }
+        l lVar = t.a().f1961d;
+        j b4 = a2.b();
+        n nVar = new n(3, this, jobParameters);
+        lVar.getClass();
+        lVar.f4271e.execute(new k(lVar, b4, i4, nVar));
+        return true;
+    }
+
+    @Override // android.app.job.JobService
+    public final boolean onStopJob(JobParameters jobParameters) {
+        return true;
+    }
+}