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/reflect/jvm/internal/ConcurrentHashMapCache.java

@@ -0,0 +1,40 @@
+package kotlin.reflect.jvm.internal;
+
+import java.util.concurrent.ConcurrentHashMap;
+import kotlin.Metadata;
+import kotlin.jvm.functions.Function1;
+import kotlin.jvm.internal.Intrinsics;
+import kotlin.jvm.internal.SourceDebugExtension;
+
+@Metadata(d1 = {"\u0000&\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0000\n\u0002\u0018\u0002\n\u0002\u0018\u0002\n\u0002\b\u0002\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010\u0002\n\u0002\b\u0004\b\u0002\u0018\u0000*\u0004\b\u0000\u0010\u00012\b\u0012\u0004\u0012\u0002H\u00010\u0002B\u001d\u0012\u0016\u0010\u0003\u001a\u0012\u0012\b\u0012\u0006\u0012\u0002\b\u00030\u0005\u0012\u0004\u0012\u00028\u00000\u0004¢\u0006\u0002\u0010\u0006J\b\u0010\t\u001a\u00020\nH\u0016J\u0019\u0010\u000b\u001a\u00028\u00002\n\u0010\f\u001a\u0006\u0012\u0002\b\u00030\u0005H\u0016¢\u0006\u0002\u0010\rR\u001e\u0010\u0007\u001a\u0012\u0012\b\u0012\u0006\u0012\u0002\b\u00030\u0005\u0012\u0004\u0012\u00028\u00000\bX\u0082\u0004¢\u0006\u0002\n\u0000R\u001e\u0010\u0003\u001a\u0012\u0012\b\u0012\u0006\u0012\u0002\b\u00030\u0005\u0012\u0004\u0012\u00028\u00000\u0004X\u0082\u0004¢\u0006\u0002\n\u0000¨\u0006\u000e"}, d2 = {"Lkotlin/reflect/jvm/internal/ConcurrentHashMapCache;", "V", "Lkotlin/reflect/jvm/internal/CacheByClass;", "compute", "Lkotlin/Function1;", "Ljava/lang/Class;", "(Lkotlin/jvm/functions/Function1;)V", "cache", "Ljava/util/concurrent/ConcurrentHashMap;", "clear", "", "get", "key", "(Ljava/lang/Class;)Ljava/lang/Object;", "kotlin-reflection"}, k = 1, mv = {1, 9, 0}, xi = 48)
+@SourceDebugExtension({"SMAP\nCacheByClass.kt\nKotlin\n*S Kotlin\n*F\n+ 1 CacheByClass.kt\nkotlin/reflect/jvm/internal/ConcurrentHashMapCache\n+ 2 MapsJVM.kt\nkotlin/collections/MapsKt__MapsJVMKt\n+ 3 fake.kt\nkotlin/jvm/internal/FakeKt\n*L\n1#1,98:1\n72#2,2:99\n1#3:101\n*S KotlinDebug\n*F\n+ 1 CacheByClass.kt\nkotlin/reflect/jvm/internal/ConcurrentHashMapCache\n*L\n92#1:99,2\n92#1:101\n*E\n"})
+/* loaded from: classes3.dex */
+final class ConcurrentHashMapCache<V> extends CacheByClass<V> {
+    private final ConcurrentHashMap<Class<?>, V> cache;
+    private final Function1<Class<?>, V> compute;
+
+    /* JADX WARN: Multi-variable type inference failed */
+    public ConcurrentHashMapCache(Function1<? super Class<?>, ? extends V> compute) {
+        Intrinsics.checkNotNullParameter(compute, "compute");
+        this.compute = compute;
+        this.cache = new ConcurrentHashMap<>();
+    }
+
+    @Override // kotlin.reflect.jvm.internal.CacheByClass
+    public void clear() {
+        this.cache.clear();
+    }
+
+    @Override // kotlin.reflect.jvm.internal.CacheByClass
+    public V get(Class<?> key) {
+        Intrinsics.checkNotNullParameter(key, "key");
+        ConcurrentHashMap<Class<?>, V> concurrentHashMap = this.cache;
+        V v3 = (V) concurrentHashMap.get(key);
+        if (v3 != null) {
+            return v3;
+        }
+        V invoke = this.compute.invoke(key);
+        V v4 = (V) concurrentHashMap.putIfAbsent(key, invoke);
+        return v4 == null ? invoke : v4;
+    }
+}