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/datastore/preferences/protobuf/Y.java

@@ -0,0 +1,63 @@
+package androidx.datastore.preferences.protobuf;
+
+import java.util.concurrent.ConcurrentHashMap;
+
+/* loaded from: classes.dex */
+public final class Y {
+
+    /* renamed from: c, reason: collision with root package name */
+    public static final Y f2881c = new Y();
+
+    /* renamed from: b, reason: collision with root package name */
+    public final ConcurrentHashMap f2883b = new ConcurrentHashMap();
+
+    /* renamed from: a, reason: collision with root package name */
+    public final J f2882a = new J();
+
+    public final InterfaceC0111b0 a(Class cls) {
+        InterfaceC0111b0 x3;
+        Class cls2;
+        AbstractC0133y.a(cls, "messageType");
+        ConcurrentHashMap concurrentHashMap = this.f2883b;
+        InterfaceC0111b0 interfaceC0111b0 = (InterfaceC0111b0) concurrentHashMap.get(cls);
+        if (interfaceC0111b0 != null) {
+            return interfaceC0111b0;
+        }
+        J j4 = this.f2882a;
+        j4.getClass();
+        Class cls3 = c0.f2894a;
+        if (!AbstractC0130v.class.isAssignableFrom(cls) && (cls2 = c0.f2894a) != null && !cls2.isAssignableFrom(cls)) {
+            throw new IllegalArgumentException("Message classes must extend GeneratedMessage or GeneratedMessageLite");
+        }
+        C0109a0 a2 = ((I) j4.f2852a).a(cls);
+        if ((a2.f2890d & 2) == 2) {
+            boolean isAssignableFrom = AbstractC0130v.class.isAssignableFrom(cls);
+            AbstractC0130v abstractC0130v = a2.f2887a;
+            if (isAssignableFrom) {
+                x3 = new T(c0.f2897d, AbstractC0124o.f2948a, abstractC0130v);
+            } else {
+                k0 k0Var = c0.f2895b;
+                C0123n c0123n = AbstractC0124o.f2949b;
+                if (c0123n == null) {
+                    throw new IllegalStateException("Protobuf runtime is not correctly loaded.");
+                }
+                x3 = new T(k0Var, c0123n, abstractC0130v);
+            }
+        } else if (AbstractC0130v.class.isAssignableFrom(cls)) {
+            x3 = (a2.f2890d & 1) == 1 ? S.x(a2, V.f2880b, G.f2849b, c0.f2897d, AbstractC0124o.f2948a, O.f2860b) : S.x(a2, V.f2880b, G.f2849b, c0.f2897d, null, O.f2860b);
+        } else if ((a2.f2890d & 1) == 1) {
+            U u3 = V.f2879a;
+            E e4 = G.f2848a;
+            k0 k0Var2 = c0.f2895b;
+            C0123n c0123n2 = AbstractC0124o.f2949b;
+            if (c0123n2 == null) {
+                throw new IllegalStateException("Protobuf runtime is not correctly loaded.");
+            }
+            x3 = S.x(a2, u3, e4, k0Var2, c0123n2, O.f2859a);
+        } else {
+            x3 = S.x(a2, V.f2879a, G.f2848a, c0.f2896c, null, O.f2859a);
+        }
+        InterfaceC0111b0 interfaceC0111b02 = (InterfaceC0111b0) concurrentHashMap.putIfAbsent(cls, x3);
+        return interfaceC0111b02 != null ? interfaceC0111b02 : x3;
+    }
+}