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/DeepRecursiveScope.java

@@ -0,0 +1,30 @@
+package kotlin;
+
+import kotlin.coroutines.Continuation;
+import kotlin.coroutines.RestrictsSuspension;
+import kotlin.jvm.internal.DefaultConstructorMarker;
+import kotlin.jvm.internal.Intrinsics;
+
+@SinceKotlin(version = "1.7")
+@Metadata(d1 = {"\u0000\"\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010\u0000\n\u0002\b\u0006\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0010\u0001\n\u0002\u0018\u0002\n\u0000\b7\u0018\u0000*\u0004\b\u0000\u0010\u0001*\u0004\b\u0001\u0010\u00022\u00020\u0003B\u0007\b\u0004¢\u0006\u0002\u0010\u0004J\u0016\u0010\u0005\u001a\u00028\u00012\u0006\u0010\u0006\u001a\u00028\u0000H¦@¢\u0006\u0002\u0010\u0007J2\u0010\u0005\u001a\u0002H\b\"\u0004\b\u0002\u0010\t\"\u0004\b\u0003\u0010\b*\u000e\u0012\u0004\u0012\u0002H\t\u0012\u0004\u0012\u0002H\b0\n2\u0006\u0010\u0006\u001a\u0002H\tH¦@¢\u0006\u0002\u0010\u000bJ\u001f\u0010\f\u001a\u00020\r*\n\u0012\u0002\b\u0003\u0012\u0002\b\u00030\n2\b\u0010\u0006\u001a\u0004\u0018\u00010\u0003H\u0087\u0002\u0082\u0001\u0001\u000e¨\u0006\u000f"}, d2 = {"Lkotlin/DeepRecursiveScope;", "T", "R", "", "()V", "callRecursive", "value", "(Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", "S", "U", "Lkotlin/DeepRecursiveFunction;", "(Lkotlin/DeepRecursiveFunction;Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", "invoke", "", "Lkotlin/DeepRecursiveScopeImpl;", "kotlin-stdlib"}, k = 1, mv = {1, 9, 0}, xi = 48)
+@RestrictsSuspension
+@WasExperimental(markerClass = {ExperimentalStdlibApi.class})
+/* loaded from: classes3.dex */
+public abstract class DeepRecursiveScope<T, R> {
+    public /* synthetic */ DeepRecursiveScope(DefaultConstructorMarker defaultConstructorMarker) {
+        this();
+    }
+
+    public abstract Object callRecursive(T t2, Continuation<? super R> continuation);
+
+    public abstract <U, S> Object callRecursive(DeepRecursiveFunction<U, S> deepRecursiveFunction, U u3, Continuation<? super S> continuation);
+
+    @Deprecated(level = DeprecationLevel.ERROR, message = "'invoke' should not be called from DeepRecursiveScope. Use 'callRecursive' to do recursion in the heap instead of the call stack.", replaceWith = @ReplaceWith(expression = "this.callRecursive(value)", imports = {}))
+    public final Void invoke(DeepRecursiveFunction<?, ?> deepRecursiveFunction, Object obj) {
+        Intrinsics.checkNotNullParameter(deepRecursiveFunction, "<this>");
+        throw new UnsupportedOperationException("Should not be called from DeepRecursiveScope");
+    }
+
+    private DeepRecursiveScope() {
+    }
+}