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/K0/a.java

@@ -0,0 +1,54 @@
+package K0;
+
+import android.os.StatFs;
+import com.google.firebase.remoteconfig.FirebaseRemoteConfig;
+import java.io.File;
+import kotlin.ranges.RangesKt;
+import kotlinx.coroutines.CoroutineDispatcher;
+import kotlinx.coroutines.Dispatchers;
+import r3.n;
+import r3.u;
+import r3.z;
+
+/* loaded from: classes.dex */
+public final class a {
+
+    /* renamed from: a, reason: collision with root package name */
+    public z f974a;
+
+    /* renamed from: b, reason: collision with root package name */
+    public final u f975b = n.f8299a;
+
+    /* renamed from: c, reason: collision with root package name */
+    public double f976c = 0.02d;
+
+    /* renamed from: d, reason: collision with root package name */
+    public final long f977d = 10485760;
+
+    /* renamed from: e, reason: collision with root package name */
+    public final long f978e = 262144000;
+
+    /* renamed from: f, reason: collision with root package name */
+    public final CoroutineDispatcher f979f = Dispatchers.getIO();
+
+    public final j a() {
+        long j4;
+        z zVar = this.f974a;
+        if (zVar == null) {
+            throw new IllegalStateException("directory == null");
+        }
+        if (this.f976c > FirebaseRemoteConfig.DEFAULT_VALUE_FOR_DOUBLE) {
+            try {
+                File e4 = zVar.e();
+                e4.mkdir();
+                StatFs statFs = new StatFs(e4.getAbsolutePath());
+                j4 = RangesKt.coerceIn((long) (this.f976c * statFs.getBlockCountLong() * statFs.getBlockSizeLong()), this.f977d, this.f978e);
+            } catch (Exception unused) {
+                j4 = this.f977d;
+            }
+        } else {
+            j4 = 0;
+        }
+        return new j(j4, this.f979f, this.f975b, zVar);
+    }
+}