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/y0/a.java

@@ -0,0 +1,85 @@
+package y0;
+
+import C.w;
+import android.util.Log;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.channels.FileChannel;
+import java.util.HashMap;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+import kotlin.jvm.internal.Intrinsics;
+
+/* loaded from: classes.dex */
+public final class a {
+
+    /* renamed from: e, reason: collision with root package name */
+    public static final HashMap f8974e = new HashMap();
+
+    /* renamed from: a, reason: collision with root package name */
+    public final boolean f8975a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final File f8976b;
+
+    /* renamed from: c, reason: collision with root package name */
+    public final Lock f8977c;
+
+    /* renamed from: d, reason: collision with root package name */
+    public FileChannel f8978d;
+
+    public a(String name, File file, boolean z3) {
+        Lock lock;
+        Intrinsics.checkNotNullParameter(name, "name");
+        this.f8975a = z3;
+        this.f8976b = file != null ? new File(file, w.n(name, ".lck")) : null;
+        HashMap hashMap = f8974e;
+        synchronized (hashMap) {
+            try {
+                Object obj = hashMap.get(name);
+                if (obj == null) {
+                    obj = new ReentrantLock();
+                    hashMap.put(name, obj);
+                }
+                lock = (Lock) obj;
+            } catch (Throwable th) {
+                throw th;
+            }
+        }
+        this.f8977c = lock;
+    }
+
+    public final void a(boolean z3) {
+        this.f8977c.lock();
+        if (z3) {
+            File file = this.f8976b;
+            try {
+                if (file == null) {
+                    throw new IOException("No lock directory was provided.");
+                }
+                File parentFile = file.getParentFile();
+                if (parentFile != null) {
+                    parentFile.mkdirs();
+                }
+                FileChannel channel = new FileOutputStream(file).getChannel();
+                channel.lock();
+                this.f8978d = channel;
+            } catch (IOException e4) {
+                this.f8978d = null;
+                Log.w("SupportSQLiteLock", "Unable to grab file lock.", e4);
+            }
+        }
+    }
+
+    public final void b() {
+        try {
+            FileChannel fileChannel = this.f8978d;
+            if (fileChannel != null) {
+                fileChannel.close();
+            }
+        } catch (IOException unused) {
+        }
+        this.f8977c.unlock();
+    }
+}