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/androidx/lifecycle/u0.java

@@ -0,0 +1,55 @@
+package androidx.lifecycle;
+
+import android.app.Application;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Arrays;
+import java.util.List;
+import kotlin.collections.ArraysKt;
+import kotlin.collections.CollectionsKt;
+import kotlin.jvm.internal.Intrinsics;
+
+/* loaded from: classes.dex */
+public abstract class u0 {
+
+    /* renamed from: a, reason: collision with root package name */
+    public static final List f3437a = CollectionsKt.listOf((Object[]) new Class[]{Application.class, n0.class});
+
+    /* renamed from: b, reason: collision with root package name */
+    public static final List f3438b = CollectionsKt.listOf(n0.class);
+
+    public static final Constructor a(Class modelClass, List signature) {
+        Intrinsics.checkNotNullParameter(modelClass, "modelClass");
+        Intrinsics.checkNotNullParameter(signature, "signature");
+        Constructor<?>[] constructors = modelClass.getConstructors();
+        Intrinsics.checkNotNullExpressionValue(constructors, "modelClass.constructors");
+        for (Constructor<?> constructor : constructors) {
+            Class<?>[] parameterTypes = constructor.getParameterTypes();
+            Intrinsics.checkNotNullExpressionValue(parameterTypes, "constructor.parameterTypes");
+            List list = ArraysKt.toList(parameterTypes);
+            if (Intrinsics.areEqual(signature, list)) {
+                Intrinsics.checkNotNull(constructor, "null cannot be cast to non-null type java.lang.reflect.Constructor<T of androidx.lifecycle.SavedStateViewModelFactoryKt.findMatchingConstructor>");
+                return constructor;
+            }
+            if (signature.size() == list.size() && list.containsAll(signature)) {
+                throw new UnsupportedOperationException("Class " + modelClass.getSimpleName() + " must have parameters in the proper order: " + signature);
+            }
+        }
+        return null;
+    }
+
+    public static final w0 b(Class modelClass, Constructor constructor, Object... params) {
+        Intrinsics.checkNotNullParameter(modelClass, "modelClass");
+        Intrinsics.checkNotNullParameter(constructor, "constructor");
+        Intrinsics.checkNotNullParameter(params, "params");
+        try {
+            return (w0) constructor.newInstance(Arrays.copyOf(params, params.length));
+        } catch (IllegalAccessException e4) {
+            throw new RuntimeException("Failed to access " + modelClass, e4);
+        } catch (InstantiationException e5) {
+            throw new RuntimeException("A " + modelClass + " cannot be instantiated.", e5);
+        } catch (InvocationTargetException e6) {
+            throw new RuntimeException("An exception happened in constructor of " + modelClass, e6.getCause());
+        }
+    }
+}