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/ReversedList.java

@@ -0,0 +1,77 @@
+package kotlin.collections;
+
+import com.google.firebase.analytics.FirebaseAnalytics;
+import java.util.Iterator;
+import java.util.List;
+import java.util.ListIterator;
+import kotlin.Metadata;
+import kotlin.jvm.internal.Intrinsics;
+
+/* JADX INFO: Access modifiers changed from: package-private */
+@Metadata(d1 = {"\u00002\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010!\n\u0002\b\u0002\n\u0002\u0010\b\n\u0002\b\u0003\n\u0002\u0010\u0002\n\u0002\b\u0007\n\u0002\u0010)\n\u0000\n\u0002\u0010+\n\u0002\b\u0004\b\u0002\u0018\u0000*\u0004\b\u0000\u0010\u00012\b\u0012\u0004\u0012\u0002H\u00010\u0002B\u0013\u0012\f\u0010\u0003\u001a\b\u0012\u0004\u0012\u00028\u00000\u0004¢\u0006\u0002\u0010\u0005J\u001d\u0010\n\u001a\u00020\u000b2\u0006\u0010\f\u001a\u00020\u00072\u0006\u0010\r\u001a\u00028\u0000H\u0016¢\u0006\u0002\u0010\u000eJ\b\u0010\u000f\u001a\u00020\u000bH\u0016J\u0016\u0010\u0010\u001a\u00028\u00002\u0006\u0010\f\u001a\u00020\u0007H\u0096\u0002¢\u0006\u0002\u0010\u0011J\u000f\u0010\u0012\u001a\b\u0012\u0004\u0012\u00028\u00000\u0013H\u0096\u0002J\u000e\u0010\u0014\u001a\b\u0012\u0004\u0012\u00028\u00000\u0015H\u0016J\u0016\u0010\u0014\u001a\b\u0012\u0004\u0012\u00028\u00000\u00152\u0006\u0010\f\u001a\u00020\u0007H\u0016J\u0015\u0010\u0016\u001a\u00028\u00002\u0006\u0010\f\u001a\u00020\u0007H\u0016¢\u0006\u0002\u0010\u0011J\u001e\u0010\u0017\u001a\u00028\u00002\u0006\u0010\f\u001a\u00020\u00072\u0006\u0010\r\u001a\u00028\u0000H\u0096\u0002¢\u0006\u0002\u0010\u0018R\u0014\u0010\u0003\u001a\b\u0012\u0004\u0012\u00028\u00000\u0004X\u0082\u0004¢\u0006\u0002\n\u0000R\u0014\u0010\u0006\u001a\u00020\u00078VX\u0096\u0004¢\u0006\u0006\u001a\u0004\b\b\u0010\t¨\u0006\u0019"}, d2 = {"Lkotlin/collections/ReversedList;", "T", "Lkotlin/collections/AbstractMutableList;", "delegate", "", "(Ljava/util/List;)V", "size", "", "getSize", "()I", "add", "", FirebaseAnalytics.Param.INDEX, "element", "(ILjava/lang/Object;)V", "clear", "get", "(I)Ljava/lang/Object;", "iterator", "", "listIterator", "", "removeAt", "set", "(ILjava/lang/Object;)Ljava/lang/Object;", "kotlin-stdlib"}, k = 1, mv = {1, 9, 0}, xi = 48)
+/* loaded from: classes3.dex */
+public final class ReversedList<T> extends AbstractMutableList<T> {
+    private final List<T> delegate;
+
+    public ReversedList(List<T> delegate) {
+        Intrinsics.checkNotNullParameter(delegate, "delegate");
+        this.delegate = delegate;
+    }
+
+    @Override // kotlin.collections.AbstractMutableList, java.util.AbstractList, java.util.List
+    public void add(int index, T element) {
+        int reversePositionIndex$CollectionsKt__ReversedViewsKt;
+        List<T> list = this.delegate;
+        reversePositionIndex$CollectionsKt__ReversedViewsKt = CollectionsKt__ReversedViewsKt.reversePositionIndex$CollectionsKt__ReversedViewsKt(this, index);
+        list.add(reversePositionIndex$CollectionsKt__ReversedViewsKt, element);
+    }
+
+    @Override // java.util.AbstractList, java.util.AbstractCollection, java.util.Collection, java.util.List
+    public void clear() {
+        this.delegate.clear();
+    }
+
+    @Override // java.util.AbstractList, java.util.List
+    public T get(int index) {
+        int reverseElementIndex$CollectionsKt__ReversedViewsKt;
+        List<T> list = this.delegate;
+        reverseElementIndex$CollectionsKt__ReversedViewsKt = CollectionsKt__ReversedViewsKt.reverseElementIndex$CollectionsKt__ReversedViewsKt(this, index);
+        return list.get(reverseElementIndex$CollectionsKt__ReversedViewsKt);
+    }
+
+    @Override // kotlin.collections.AbstractMutableList
+    public int getSize() {
+        return this.delegate.size();
+    }
+
+    @Override // java.util.AbstractList, java.util.AbstractCollection, java.util.Collection, java.lang.Iterable, java.util.List
+    public Iterator<T> iterator() {
+        return listIterator(0);
+    }
+
+    @Override // java.util.AbstractList, java.util.List
+    public ListIterator<T> listIterator() {
+        return listIterator(0);
+    }
+
+    @Override // kotlin.collections.AbstractMutableList
+    public T removeAt(int index) {
+        int reverseElementIndex$CollectionsKt__ReversedViewsKt;
+        List<T> list = this.delegate;
+        reverseElementIndex$CollectionsKt__ReversedViewsKt = CollectionsKt__ReversedViewsKt.reverseElementIndex$CollectionsKt__ReversedViewsKt(this, index);
+        return list.remove(reverseElementIndex$CollectionsKt__ReversedViewsKt);
+    }
+
+    @Override // kotlin.collections.AbstractMutableList, java.util.AbstractList, java.util.List
+    public T set(int index, T element) {
+        int reverseElementIndex$CollectionsKt__ReversedViewsKt;
+        List<T> list = this.delegate;
+        reverseElementIndex$CollectionsKt__ReversedViewsKt = CollectionsKt__ReversedViewsKt.reverseElementIndex$CollectionsKt__ReversedViewsKt(this, index);
+        return list.set(reverseElementIndex$CollectionsKt__ReversedViewsKt, element);
+    }
+
+    @Override // java.util.AbstractList, java.util.List
+    public ListIterator<T> listIterator(int index) {
+        return new ReversedList$listIterator$1(this, index);
+    }
+}