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/AbstractCollection.java

@@ -0,0 +1,130 @@
+package kotlin.collections;
+
+import java.util.Collection;
+import java.util.Iterator;
+import kotlin.Metadata;
+import kotlin.SinceKotlin;
+import kotlin.jvm.functions.Function1;
+import kotlin.jvm.internal.CollectionToArray;
+import kotlin.jvm.internal.Intrinsics;
+import kotlin.jvm.internal.SourceDebugExtension;
+import kotlin.jvm.internal.markers.KMappedMarker;
+
+@SinceKotlin(version = "1.1")
+@Metadata(d1 = {"\u00006\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010\u001e\n\u0002\b\u0002\n\u0002\u0010\b\n\u0002\b\u0003\n\u0002\u0010\u000b\n\u0002\b\u0006\n\u0002\u0010(\n\u0000\n\u0002\u0010\u0011\n\u0002\u0010\u0000\n\u0002\b\u0005\n\u0002\u0010\u000e\n\u0000\b'\u0018\u0000*\u0006\b\u0000\u0010\u0001 \u00012\b\u0012\u0004\u0012\u0002H\u00010\u0002B\u0007\b\u0004¢\u0006\u0002\u0010\u0003J\u0016\u0010\b\u001a\u00020\t2\u0006\u0010\n\u001a\u00028\u0000H\u0096\u0002¢\u0006\u0002\u0010\u000bJ\u0016\u0010\f\u001a\u00020\t2\f\u0010\r\u001a\b\u0012\u0004\u0012\u00028\u00000\u0002H\u0016J\b\u0010\u000e\u001a\u00020\tH\u0016J\u000f\u0010\u000f\u001a\b\u0012\u0004\u0012\u00028\u00000\u0010H¦\u0002J\u0015\u0010\u0011\u001a\n\u0012\u0006\u0012\u0004\u0018\u00010\u00130\u0012H\u0015¢\u0006\u0002\u0010\u0014J'\u0010\u0011\u001a\b\u0012\u0004\u0012\u0002H\u00150\u0012\"\u0004\b\u0001\u0010\u00152\f\u0010\u0016\u001a\b\u0012\u0004\u0012\u0002H\u00150\u0012H\u0014¢\u0006\u0002\u0010\u0017J\b\u0010\u0018\u001a\u00020\u0019H\u0016R\u0012\u0010\u0004\u001a\u00020\u0005X¦\u0004¢\u0006\u0006\u001a\u0004\b\u0006\u0010\u0007¨\u0006\u001a"}, d2 = {"Lkotlin/collections/AbstractCollection;", "E", "", "()V", "size", "", "getSize", "()I", "contains", "", "element", "(Ljava/lang/Object;)Z", "containsAll", "elements", "isEmpty", "iterator", "", "toArray", "", "", "()[Ljava/lang/Object;", "T", "array", "([Ljava/lang/Object;)[Ljava/lang/Object;", "toString", "", "kotlin-stdlib"}, k = 1, mv = {1, 9, 0}, xi = 48)
+@SourceDebugExtension({"SMAP\nAbstractCollection.kt\nKotlin\n*S Kotlin\n*F\n+ 1 AbstractCollection.kt\nkotlin/collections/AbstractCollection\n+ 2 _Collections.kt\nkotlin/collections/CollectionsKt___CollectionsKt\n*L\n1#1,50:1\n1747#2,3:51\n1726#2,3:54\n*S KotlinDebug\n*F\n+ 1 AbstractCollection.kt\nkotlin/collections/AbstractCollection\n*L\n19#1:51,3\n22#1:54,3\n*E\n"})
+/* loaded from: classes3.dex */
+public abstract class AbstractCollection<E> implements Collection<E>, KMappedMarker {
+    @Override // java.util.Collection
+    public boolean add(E e4) {
+        throw new UnsupportedOperationException("Operation is not supported for read-only collection");
+    }
+
+    @Override // java.util.Collection
+    public boolean addAll(Collection<? extends E> collection) {
+        throw new UnsupportedOperationException("Operation is not supported for read-only collection");
+    }
+
+    @Override // java.util.Collection
+    public void clear() {
+        throw new UnsupportedOperationException("Operation is not supported for read-only collection");
+    }
+
+    @Override // java.util.Collection
+    public boolean contains(E element) {
+        if (isEmpty()) {
+            return false;
+        }
+        Iterator<E> it = iterator();
+        while (it.hasNext()) {
+            if (Intrinsics.areEqual(it.next(), element)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /* JADX WARN: Multi-variable type inference failed */
+    @Override // java.util.Collection
+    public boolean containsAll(Collection<? extends Object> elements) {
+        Intrinsics.checkNotNullParameter(elements, "elements");
+        Collection<? extends Object> collection = elements;
+        if (collection.isEmpty()) {
+            return true;
+        }
+        Iterator<T> it = collection.iterator();
+        while (it.hasNext()) {
+            if (!contains(it.next())) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /* renamed from: getSize */
+    public abstract int get_size();
+
+    @Override // java.util.Collection
+    public boolean isEmpty() {
+        return size() == 0;
+    }
+
+    @Override // java.util.Collection, java.lang.Iterable
+    public abstract Iterator<E> iterator();
+
+    @Override // java.util.Collection
+    public boolean remove(Object obj) {
+        throw new UnsupportedOperationException("Operation is not supported for read-only collection");
+    }
+
+    @Override // java.util.Collection
+    public boolean removeAll(Collection<? extends Object> collection) {
+        throw new UnsupportedOperationException("Operation is not supported for read-only collection");
+    }
+
+    @Override // java.util.Collection
+    public boolean retainAll(Collection<? extends Object> collection) {
+        throw new UnsupportedOperationException("Operation is not supported for read-only collection");
+    }
+
+    @Override // java.util.Collection
+    public final /* bridge */ int size() {
+        return get_size();
+    }
+
+    @Override // java.util.Collection
+    public Object[] toArray() {
+        return CollectionToArray.toArray(this);
+    }
+
+    public String toString() {
+        return CollectionsKt___CollectionsKt.joinToString$default(this, ", ", "[", "]", 0, null, new Function1<E, CharSequence>(this) { // from class: kotlin.collections.AbstractCollection$toString$1
+            final /* synthetic */ AbstractCollection<E> this$0;
+
+            /* JADX WARN: 'super' call moved to the top of the method (can break code semantics) */
+            /* JADX WARN: Multi-variable type inference failed */
+            {
+                super(1);
+                this.this$0 = this;
+            }
+
+            /* JADX WARN: Multi-variable type inference failed */
+            @Override // kotlin.jvm.functions.Function1
+            public /* bridge */ /* synthetic */ CharSequence invoke(Object obj) {
+                return invoke((AbstractCollection$toString$1<E>) obj);
+            }
+
+            /* JADX WARN: Can't rename method to resolve collision */
+            @Override // kotlin.jvm.functions.Function1
+            public final CharSequence invoke(E e4) {
+                return e4 == this.this$0 ? "(this Collection)" : String.valueOf(e4);
+            }
+        }, 24, null);
+    }
+
+    @Override // java.util.Collection
+    public <T> T[] toArray(T[] array) {
+        Intrinsics.checkNotNullParameter(array, "array");
+        return (T[]) CollectionToArray.toArray(this, array);
+    }
+}