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/kotlinx/coroutines/BuildersKt.java

@@ -0,0 +1,39 @@
+package kotlinx.coroutines;
+
+import kotlin.Metadata;
+import kotlin.Unit;
+import kotlin.coroutines.Continuation;
+import kotlin.coroutines.CoroutineContext;
+import kotlin.jvm.functions.Function2;
+
+@Metadata(d1 = {"kotlinx/coroutines/BuildersKt__BuildersKt", "kotlinx/coroutines/BuildersKt__Builders_commonKt"}, k = 4, mv = {1, 9, 0}, xi = 48)
+/* loaded from: classes3.dex */
+public final class BuildersKt {
+    public static final <T> Deferred<T> async(CoroutineScope coroutineScope, CoroutineContext coroutineContext, CoroutineStart coroutineStart, Function2<? super CoroutineScope, ? super Continuation<? super T>, ? extends Object> function2) {
+        return BuildersKt__Builders_commonKt.async(coroutineScope, coroutineContext, coroutineStart, function2);
+    }
+
+    public static /* synthetic */ Deferred async$default(CoroutineScope coroutineScope, CoroutineContext coroutineContext, CoroutineStart coroutineStart, Function2 function2, int i, Object obj) {
+        return BuildersKt__Builders_commonKt.async$default(coroutineScope, coroutineContext, coroutineStart, function2, i, obj);
+    }
+
+    public static final <T> Object invoke(CoroutineDispatcher coroutineDispatcher, Function2<? super CoroutineScope, ? super Continuation<? super T>, ? extends Object> function2, Continuation<? super T> continuation) {
+        return BuildersKt__Builders_commonKt.invoke(coroutineDispatcher, function2, continuation);
+    }
+
+    public static final Job launch(CoroutineScope coroutineScope, CoroutineContext coroutineContext, CoroutineStart coroutineStart, Function2<? super CoroutineScope, ? super Continuation<? super Unit>, ? extends Object> function2) {
+        return BuildersKt__Builders_commonKt.launch(coroutineScope, coroutineContext, coroutineStart, function2);
+    }
+
+    public static /* synthetic */ Job launch$default(CoroutineScope coroutineScope, CoroutineContext coroutineContext, CoroutineStart coroutineStart, Function2 function2, int i, Object obj) {
+        return BuildersKt__Builders_commonKt.launch$default(coroutineScope, coroutineContext, coroutineStart, function2, i, obj);
+    }
+
+    public static final <T> T runBlocking(CoroutineContext coroutineContext, Function2<? super CoroutineScope, ? super Continuation<? super T>, ? extends Object> function2) throws InterruptedException {
+        return (T) BuildersKt__BuildersKt.runBlocking(coroutineContext, function2);
+    }
+
+    public static final <T> Object withContext(CoroutineContext coroutineContext, Function2<? super CoroutineScope, ? super Continuation<? super T>, ? extends Object> function2, Continuation<? super T> continuation) {
+        return BuildersKt__Builders_commonKt.withContext(coroutineContext, function2, continuation);
+    }
+}