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/SetsKt___SetsKt.java

@@ -0,0 +1,124 @@
+package kotlin.collections;
+
+import java.util.Collection;
+import java.util.LinkedHashSet;
+import java.util.Set;
+import kotlin.Metadata;
+import kotlin.internal.InlineOnly;
+import kotlin.jvm.internal.Intrinsics;
+import kotlin.jvm.internal.SourceDebugExtension;
+import kotlin.sequences.Sequence;
+
+/* JADX INFO: Access modifiers changed from: package-private */
+@Metadata(d1 = {"\u0000\u001c\n\u0000\n\u0002\u0010\"\n\u0002\b\u0004\n\u0002\u0010\u0011\n\u0000\n\u0002\u0010\u001c\n\u0002\u0018\u0002\n\u0002\b\u0004\u001a,\u0010\u0000\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\u0006\u0010\u0003\u001a\u0002H\u0002H\u0086\u0002¢\u0006\u0002\u0010\u0004\u001a4\u0010\u0000\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\u000e\u0010\u0005\u001a\n\u0012\u0006\b\u0001\u0012\u0002H\u00020\u0006H\u0086\u0002¢\u0006\u0002\u0010\u0007\u001a-\u0010\u0000\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\f\u0010\u0005\u001a\b\u0012\u0004\u0012\u0002H\u00020\bH\u0086\u0002\u001a-\u0010\u0000\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\f\u0010\u0005\u001a\b\u0012\u0004\u0012\u0002H\u00020\tH\u0086\u0002\u001a,\u0010\n\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\u0006\u0010\u0003\u001a\u0002H\u0002H\u0087\b¢\u0006\u0002\u0010\u0004\u001a,\u0010\u000b\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\u0006\u0010\u0003\u001a\u0002H\u0002H\u0086\u0002¢\u0006\u0002\u0010\u0004\u001a4\u0010\u000b\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\u000e\u0010\u0005\u001a\n\u0012\u0006\b\u0001\u0012\u0002H\u00020\u0006H\u0086\u0002¢\u0006\u0002\u0010\u0007\u001a-\u0010\u000b\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\f\u0010\u0005\u001a\b\u0012\u0004\u0012\u0002H\u00020\bH\u0086\u0002\u001a-\u0010\u000b\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\f\u0010\u0005\u001a\b\u0012\u0004\u0012\u0002H\u00020\tH\u0086\u0002\u001a,\u0010\f\u001a\b\u0012\u0004\u0012\u0002H\u00020\u0001\"\u0004\b\u0000\u0010\u0002*\b\u0012\u0004\u0012\u0002H\u00020\u00012\u0006\u0010\u0003\u001a\u0002H\u0002H\u0087\b¢\u0006\u0002\u0010\u0004¨\u0006\r"}, d2 = {"minus", "", "T", "element", "(Ljava/util/Set;Ljava/lang/Object;)Ljava/util/Set;", "elements", "", "(Ljava/util/Set;[Ljava/lang/Object;)Ljava/util/Set;", "", "Lkotlin/sequences/Sequence;", "minusElement", "plus", "plusElement", "kotlin-stdlib"}, k = 5, mv = {1, 9, 0}, xi = 49, xs = "kotlin/collections/SetsKt")
+@SourceDebugExtension({"SMAP\n_Sets.kt\nKotlin\n*S Kotlin\n*F\n+ 1 _Sets.kt\nkotlin/collections/SetsKt___SetsKt\n+ 2 _Collections.kt\nkotlin/collections/CollectionsKt___CollectionsKt\n+ 3 fake.kt\nkotlin/jvm/internal/FakeKt\n*L\n1#1,139:1\n857#2,2:140\n847#2,2:142\n1#3:144\n*S KotlinDebug\n*F\n+ 1 _Sets.kt\nkotlin/collections/SetsKt___SetsKt\n*L\n28#1:140,2\n52#1:142,2\n*E\n"})
+/* loaded from: classes3.dex */
+public class SetsKt___SetsKt extends SetsKt__SetsKt {
+    public static <T> Set<T> minus(Set<? extends T> set, T t2) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        LinkedHashSet linkedHashSet = new LinkedHashSet(MapsKt__MapsJVMKt.mapCapacity(set.size()));
+        boolean z3 = false;
+        for (T t4 : set) {
+            boolean z4 = true;
+            if (!z3 && Intrinsics.areEqual(t4, t2)) {
+                z3 = true;
+                z4 = false;
+            }
+            if (z4) {
+                linkedHashSet.add(t4);
+            }
+        }
+        return linkedHashSet;
+    }
+
+    @InlineOnly
+    private static final <T> Set<T> minusElement(Set<? extends T> set, T t2) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        return minus(set, t2);
+    }
+
+    public static <T> Set<T> plus(Set<? extends T> set, T t2) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        LinkedHashSet linkedHashSet = new LinkedHashSet(MapsKt__MapsJVMKt.mapCapacity(set.size() + 1));
+        linkedHashSet.addAll(set);
+        linkedHashSet.add(t2);
+        return linkedHashSet;
+    }
+
+    @InlineOnly
+    private static final <T> Set<T> plusElement(Set<? extends T> set, T t2) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        return plus(set, t2);
+    }
+
+    public static final <T> Set<T> plus(Set<? extends T> set, T[] elements) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        Intrinsics.checkNotNullParameter(elements, "elements");
+        LinkedHashSet linkedHashSet = new LinkedHashSet(MapsKt__MapsJVMKt.mapCapacity(set.size() + elements.length));
+        linkedHashSet.addAll(set);
+        CollectionsKt__MutableCollectionsKt.addAll(linkedHashSet, elements);
+        return linkedHashSet;
+    }
+
+    public static final <T> Set<T> minus(Set<? extends T> set, T[] elements) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        Intrinsics.checkNotNullParameter(elements, "elements");
+        LinkedHashSet linkedHashSet = new LinkedHashSet(set);
+        CollectionsKt__MutableCollectionsKt.removeAll(linkedHashSet, elements);
+        return linkedHashSet;
+    }
+
+    public static <T> Set<T> minus(Set<? extends T> set, Iterable<? extends T> elements) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        Intrinsics.checkNotNullParameter(elements, "elements");
+        Collection<?> convertToListIfNotCollection = CollectionsKt__MutableCollectionsKt.convertToListIfNotCollection(elements);
+        if (convertToListIfNotCollection.isEmpty()) {
+            return CollectionsKt___CollectionsKt.toSet(set);
+        }
+        if (convertToListIfNotCollection instanceof Set) {
+            LinkedHashSet linkedHashSet = new LinkedHashSet();
+            for (T t2 : set) {
+                if (!convertToListIfNotCollection.contains(t2)) {
+                    linkedHashSet.add(t2);
+                }
+            }
+            return linkedHashSet;
+        }
+        LinkedHashSet linkedHashSet2 = new LinkedHashSet(set);
+        linkedHashSet2.removeAll(convertToListIfNotCollection);
+        return linkedHashSet2;
+    }
+
+    public static <T> Set<T> plus(Set<? extends T> set, Iterable<? extends T> elements) {
+        int size;
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        Intrinsics.checkNotNullParameter(elements, "elements");
+        Integer collectionSizeOrNull = CollectionsKt__IterablesKt.collectionSizeOrNull(elements);
+        if (collectionSizeOrNull != null) {
+            size = set.size() + collectionSizeOrNull.intValue();
+        } else {
+            size = set.size() * 2;
+        }
+        LinkedHashSet linkedHashSet = new LinkedHashSet(MapsKt__MapsJVMKt.mapCapacity(size));
+        linkedHashSet.addAll(set);
+        CollectionsKt__MutableCollectionsKt.addAll(linkedHashSet, elements);
+        return linkedHashSet;
+    }
+
+    public static final <T> Set<T> plus(Set<? extends T> set, Sequence<? extends T> elements) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        Intrinsics.checkNotNullParameter(elements, "elements");
+        LinkedHashSet linkedHashSet = new LinkedHashSet(MapsKt__MapsJVMKt.mapCapacity(set.size() * 2));
+        linkedHashSet.addAll(set);
+        CollectionsKt__MutableCollectionsKt.addAll(linkedHashSet, elements);
+        return linkedHashSet;
+    }
+
+    public static final <T> Set<T> minus(Set<? extends T> set, Sequence<? extends T> elements) {
+        Intrinsics.checkNotNullParameter(set, "<this>");
+        Intrinsics.checkNotNullParameter(elements, "elements");
+        LinkedHashSet linkedHashSet = new LinkedHashSet(set);
+        CollectionsKt__MutableCollectionsKt.removeAll(linkedHashSet, elements);
+        return linkedHashSet;
+    }
+}