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/kotlin/collections/MovingSubList.java

@@ -0,0 +1,39 @@
+package kotlin.collections;
+
+import com.google.firebase.analytics.FirebaseAnalytics;
+import java.util.List;
+import java.util.RandomAccess;
+import kotlin.Metadata;
+import kotlin.jvm.internal.Intrinsics;
+
+@Metadata(d1 = {"\u0000,\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0002\u0018\u0002\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010 \n\u0002\b\u0002\n\u0002\u0010\b\n\u0002\b\b\n\u0002\u0010\u0002\n\u0002\b\u0002\b\u0000\u0018\u0000*\u0006\b\u0000\u0010\u0001 \u00012\b\u0012\u0004\u0012\u0002H\u00010\u00022\u00060\u0003j\u0002`\u0004B\u0013\u0012\f\u0010\u0005\u001a\b\u0012\u0004\u0012\u00028\u00000\u0006¢\u0006\u0002\u0010\u0007J\u0016\u0010\u000e\u001a\u00028\u00002\u0006\u0010\u000f\u001a\u00020\tH\u0096\u0002¢\u0006\u0002\u0010\u0010J\u0016\u0010\u0011\u001a\u00020\u00122\u0006\u0010\n\u001a\u00020\t2\u0006\u0010\u0013\u001a\u00020\tR\u000e\u0010\b\u001a\u00020\tX\u0082\u000e¢\u0006\u0002\n\u0000R\u000e\u0010\n\u001a\u00020\tX\u0082\u000e¢\u0006\u0002\n\u0000R\u0014\u0010\u0005\u001a\b\u0012\u0004\u0012\u00028\u00000\u0006X\u0082\u0004¢\u0006\u0002\n\u0000R\u0014\u0010\u000b\u001a\u00020\t8VX\u0096\u0004¢\u0006\u0006\u001a\u0004\b\f\u0010\r¨\u0006\u0014"}, d2 = {"Lkotlin/collections/MovingSubList;", "E", "Lkotlin/collections/AbstractList;", "Ljava/util/RandomAccess;", "Lkotlin/collections/RandomAccess;", "list", "", "(Ljava/util/List;)V", "_size", "", "fromIndex", "size", "getSize", "()I", "get", FirebaseAnalytics.Param.INDEX, "(I)Ljava/lang/Object;", "move", "", "toIndex", "kotlin-stdlib"}, k = 1, mv = {1, 9, 0}, xi = 48)
+/* loaded from: classes3.dex */
+public final class MovingSubList<E> extends AbstractList<E> implements RandomAccess {
+    private int _size;
+    private int fromIndex;
+    private final List<E> list;
+
+    /* JADX WARN: Multi-variable type inference failed */
+    public MovingSubList(List<? extends E> list) {
+        Intrinsics.checkNotNullParameter(list, "list");
+        this.list = list;
+    }
+
+    @Override // kotlin.collections.AbstractList, java.util.List
+    public E get(int index) {
+        AbstractList.INSTANCE.checkElementIndex$kotlin_stdlib(index, this._size);
+        return this.list.get(this.fromIndex + index);
+    }
+
+    @Override // kotlin.collections.AbstractList, kotlin.collections.AbstractCollection
+    /* renamed from: getSize, reason: from getter */
+    public int get_size() {
+        return this._size;
+    }
+
+    public final void move(int fromIndex, int toIndex) {
+        AbstractList.INSTANCE.checkRangeIndexes$kotlin_stdlib(fromIndex, toIndex, this.list.size());
+        this.fromIndex = fromIndex;
+        this._size = toIndex - fromIndex;
+    }
+}