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/adif/elcanomovil/uiSubscriptions/create/e.java

@@ -0,0 +1,63 @@
+package com.adif.elcanomovil.uiSubscriptions.create;
+
+import kotlin.Unit;
+import kotlin.jvm.functions.Function0;
+import kotlin.jvm.internal.Lambda;
+
+/* loaded from: classes3.dex */
+public final class e extends Lambda implements Function0 {
+
+    /* renamed from: a, reason: collision with root package name */
+    public final /* synthetic */ int f5309a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final /* synthetic */ SubscriptionCreationFragment f5310b;
+
+    /* JADX WARN: 'super' call moved to the top of the method (can break code semantics) */
+    public /* synthetic */ e(SubscriptionCreationFragment subscriptionCreationFragment, int i) {
+        super(0);
+        this.f5309a = i;
+        this.f5310b = subscriptionCreationFragment;
+    }
+
+    @Override // kotlin.jvm.functions.Function0
+    public final Object invoke() {
+        SubscriptionCreationViewModel viewModel;
+        SubscriptionCreationViewModel viewModel2;
+        SubscriptionCreationViewModel viewModel3;
+        SubscriptionCreationViewModel viewModel4;
+        SubscriptionCreationViewModel viewModel5;
+        SubscriptionCreationViewModel viewModel6;
+        SubscriptionCreationViewModel viewModel7;
+        switch (this.f5309a) {
+            case 0:
+                viewModel = this.f5310b.getViewModel();
+                viewModel.setRepetitionDay("L");
+                return Unit.INSTANCE;
+            case 1:
+                viewModel2 = this.f5310b.getViewModel();
+                viewModel2.setRepetitionDay("M");
+                return Unit.INSTANCE;
+            case 2:
+                viewModel3 = this.f5310b.getViewModel();
+                viewModel3.setRepetitionDay("X");
+                return Unit.INSTANCE;
+            case 3:
+                viewModel4 = this.f5310b.getViewModel();
+                viewModel4.setRepetitionDay("J");
+                return Unit.INSTANCE;
+            case 4:
+                viewModel5 = this.f5310b.getViewModel();
+                viewModel5.setRepetitionDay("V");
+                return Unit.INSTANCE;
+            case 5:
+                viewModel6 = this.f5310b.getViewModel();
+                viewModel6.setRepetitionDay("S");
+                return Unit.INSTANCE;
+            default:
+                viewModel7 = this.f5310b.getViewModel();
+                viewModel7.setRepetitionDay("D");
+                return Unit.INSTANCE;
+        }
+    }
+}