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/CollectionsKt__CollectionsKt$binarySearchBy$1.java

@@ -0,0 +1,37 @@
+package kotlin.collections;
+
+import kotlin.Metadata;
+import kotlin.comparisons.ComparisonsKt;
+import kotlin.jvm.functions.Function1;
+import kotlin.jvm.internal.Lambda;
+import kotlin.jvm.internal.SourceDebugExtension;
+
+/* JADX INFO: Add missing generic type declarations: [T] */
+/* JADX WARN: Incorrect field signature: TK; */
+@Metadata(d1 = {"\u0000\u0012\n\u0000\n\u0002\u0010\b\n\u0002\b\u0002\n\u0002\u0010\u000f\n\u0002\b\u0003\u0010\u0000\u001a\u00020\u0001\"\u0004\b\u0000\u0010\u0002\"\u000e\b\u0001\u0010\u0003*\b\u0012\u0004\u0012\u0002H\u00030\u00042\u0006\u0010\u0005\u001a\u0002H\u0002H\n¢\u0006\u0004\b\u0006\u0010\u0007"}, d2 = {"<anonymous>", "", "T", "K", "", "it", "invoke", "(Ljava/lang/Object;)Ljava/lang/Integer;"}, k = 3, mv = {1, 9, 0}, xi = 176)
+@SourceDebugExtension({"SMAP\nCollections.kt\nKotlin\n*S Kotlin\n*F\n+ 1 Collections.kt\nkotlin/collections/CollectionsKt__CollectionsKt$binarySearchBy$1\n*L\n1#1,522:1\n*E\n"})
+/* loaded from: classes3.dex */
+public final class CollectionsKt__CollectionsKt$binarySearchBy$1<T> extends Lambda implements Function1<T, Integer> {
+    final /* synthetic */ Comparable $key;
+    final /* synthetic */ Function1<T, K> $selector;
+
+    /* JADX WARN: 'super' call moved to the top of the method (can break code semantics) */
+    /* JADX WARN: Incorrect types in method signature: (Lkotlin/jvm/functions/Function1<-TT;+TK;>;TK;)V */
+    public CollectionsKt__CollectionsKt$binarySearchBy$1(Function1 function1, Comparable comparable) {
+        super(1);
+        this.$selector = function1;
+        this.$key = comparable;
+    }
+
+    /* JADX WARN: Can't rename method to resolve collision */
+    @Override // kotlin.jvm.functions.Function1
+    public final Integer invoke(T t2) {
+        return Integer.valueOf(ComparisonsKt.compareValues((Comparable) this.$selector.invoke(t2), this.$key));
+    }
+
+    /* JADX WARN: Multi-variable type inference failed */
+    @Override // kotlin.jvm.functions.Function1
+    public /* bridge */ /* synthetic */ Integer invoke(Object obj) {
+        return invoke((CollectionsKt__CollectionsKt$binarySearchBy$1<T>) obj);
+    }
+}