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/Z.java

@@ -0,0 +1,121 @@
+package androidx.datastore.preferences.protobuf;
+
+import java.util.AbstractList;
+import java.util.Arrays;
+import java.util.RandomAccess;
+
+/* loaded from: classes.dex */
+public final class Z extends AbstractC0110b implements RandomAccess {
+
+    /* renamed from: d, reason: collision with root package name */
+    public static final Z f2884d;
+
+    /* renamed from: b, reason: collision with root package name */
+    public Object[] f2885b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public int f2886c;
+
+    static {
+        Z z3 = new Z(new Object[0], 0);
+        f2884d = z3;
+        z3.f2891a = false;
+    }
+
+    public Z(Object[] objArr, int i) {
+        this.f2885b = objArr;
+        this.f2886c = i;
+    }
+
+    @Override // androidx.datastore.preferences.protobuf.AbstractC0110b, java.util.AbstractList, java.util.AbstractCollection, java.util.Collection, java.util.List
+    public final boolean add(Object obj) {
+        a();
+        int i = this.f2886c;
+        Object[] objArr = this.f2885b;
+        if (i == objArr.length) {
+            this.f2885b = Arrays.copyOf(objArr, ((i * 3) / 2) + 1);
+        }
+        Object[] objArr2 = this.f2885b;
+        int i4 = this.f2886c;
+        this.f2886c = i4 + 1;
+        objArr2[i4] = obj;
+        ((AbstractList) this).modCount++;
+        return true;
+    }
+
+    public final void b(int i) {
+        if (i < 0 || i >= this.f2886c) {
+            StringBuilder t2 = C.w.t(i, "Index:", ", Size:");
+            t2.append(this.f2886c);
+            throw new IndexOutOfBoundsException(t2.toString());
+        }
+    }
+
+    @Override // androidx.datastore.preferences.protobuf.InterfaceC0132x
+    public final InterfaceC0132x d(int i) {
+        if (i >= this.f2886c) {
+            return new Z(Arrays.copyOf(this.f2885b, i), this.f2886c);
+        }
+        throw new IllegalArgumentException();
+    }
+
+    @Override // java.util.AbstractList, java.util.List
+    public final Object get(int i) {
+        b(i);
+        return this.f2885b[i];
+    }
+
+    @Override // java.util.AbstractList, java.util.List
+    public final Object remove(int i) {
+        a();
+        b(i);
+        Object[] objArr = this.f2885b;
+        Object obj = objArr[i];
+        if (i < this.f2886c - 1) {
+            System.arraycopy(objArr, i + 1, objArr, i, (r2 - i) - 1);
+        }
+        this.f2886c--;
+        ((AbstractList) this).modCount++;
+        return obj;
+    }
+
+    @Override // java.util.AbstractList, java.util.List
+    public final Object set(int i, Object obj) {
+        a();
+        b(i);
+        Object[] objArr = this.f2885b;
+        Object obj2 = objArr[i];
+        objArr[i] = obj;
+        ((AbstractList) this).modCount++;
+        return obj2;
+    }
+
+    @Override // java.util.AbstractCollection, java.util.Collection, java.util.List
+    public final int size() {
+        return this.f2886c;
+    }
+
+    @Override // java.util.AbstractList, java.util.List
+    public final void add(int i, Object obj) {
+        int i4;
+        a();
+        if (i >= 0 && i <= (i4 = this.f2886c)) {
+            Object[] objArr = this.f2885b;
+            if (i4 < objArr.length) {
+                System.arraycopy(objArr, i, objArr, i + 1, i4 - i);
+            } else {
+                Object[] objArr2 = new Object[((i4 * 3) / 2) + 1];
+                System.arraycopy(objArr, 0, objArr2, 0, i);
+                System.arraycopy(this.f2885b, i, objArr2, i + 1, this.f2886c - i);
+                this.f2885b = objArr2;
+            }
+            this.f2885b[i] = obj;
+            this.f2886c++;
+            ((AbstractList) this).modCount++;
+            return;
+        }
+        StringBuilder t2 = C.w.t(i, "Index:", ", Size:");
+        t2.append(this.f2886c);
+        throw new IndexOutOfBoundsException(t2.toString());
+    }
+}