string finalPath = string.Empty;
string substratePath = "/Library/MobileSubstrate/DynamicLibraries/";
bool bySymlink = false;
if (!Directory.Exists(substratePath)) //Если папки не существует (скрыт твиком xCon), то пытаемся получить доступ к файлам через созданный нами симлинк
{
  string symlinkPath = CreateSymlimk(substratePath);
  if (!string.IsNullOrEmpty(symlinkPath))
  {
    bySymlink = true;
    finalPath = symlinkPath;
  }
}
else
{
  finalPath = substratePath;
}
bool detected = false;
string detectedFile = string.Empty;
try
{
  if (!string.IsNullOrEmpty(finalPath))
  {
    string[] plistFiles = Directory.GetFiles(finalPath, "*.plist"));
    foreach (var plistFile in plistFiles)
    {
      if (File.Exists(plistFile))
      {
        StreamReader file = File.OpenText(plistFile);
        string con = file.ReadToEnd();
        string bundle = "app_bundle";
        if (con.Contains(bundle))
        {
          detectedFile = plistFile;
          detected = true;
          break;
        }
      }
    }
  }
}
catch (Exception ex)
{
  Debug.LogError(ex.ToString());
}

if (File.Exists("/var/mobile/Library/Preferences/jp.akusio.kernbypass.plist")
{
  StreamReader file = File.OpenText("/var/mobile/Library/Preferences/jp.akusio.kernbypass.plist");
  string con = file.ReadToEnd();
  if (con.Contains("app_bundle")
  {
    //detected
  }
}

JavaVM*    java_vm;
jint JNI_OnLoad(JavaVM* vm, void* reserved) {
    java_vm = vm;
    return JNI_VERSION_1_6;
}
int CheckParentDirectoryAccess()
{
    JNIEnv* jni_env = 0;
    (*java_vm)->AttachCurrentThread(java_vm, &jni_env, NULL);
    jclass uClass = (*jni_env)->FindClass(jni_env, "com/unity3d/player/UnityPlayer");
    jfieldID activityID = (*jni_env)->GetStaticFieldID(jni_env, uClass, "currentActivity", "Landroid/app/Activity;");
    jobject obj_activity = (*jni_env)->GetStaticObjectField(jni_env, uClass, activityID);
    jclass classActivity = (*jni_env)->FindClass(jni_env, "android/app/Activity");
    jmethodID mID_func = (*jni_env)->GetMethodID(jni_env, classActivity,
                                                      "getPackageManager", "()Landroid/content/pm/PackageManager;");
    jobject pm = (*jni_env)->CallObjectMethod(jni_env, obj_activity, mID_func);
    jmethodID pmmID = (*jni_env)->GetMethodID(jni_env, classActivity,
                                                      "getPackageName", "()Ljava/lang/String;");
    jstring pName = (*jni_env)->CallObjectMethod(jni_env, obj_activity, pmmID);
    jclass pm_class = (*jni_env)->GetObjectClass(jni_env, pm);
    jmethodID mID_ai = (*jni_env)->GetMethodID(jni_env, pm_class, "getApplicationInfo","(Ljava/lang/String;I)Landroid/content/pm/ApplicationInfo;");
    jobject ai = (*jni_env)->CallObjectMethod(jni_env, pm, mID_ai, pName, 128);
    jclass ai_class = (*jni_env)->GetObjectClass(jni_env, ai);
    jfieldID nfieldID = (*jni_env)->GetFieldID(jni_env, ai_class,"dataDir","Ljava/lang/String;");
    jstring nDir = (*jni_env)->GetObjectField(jni_env, ai, nfieldID);
    const char *nDirStr = (*jni_env)->GetStringUTFChars(jni_env, nDir, 0);
    char parentDir[200];
    snprintf(parentDir, sizeof(parentDir), "%s/..", nDirStr);
    if (access(parentDir, W_OK) != 0)
    {
         return 1;
    }
  else
  {
    return 0;
  }
}

Lazy<byte[]> defaultResult = new Lazy<byte[]>(() => new byte[20]);
            if (Application.platform != RuntimePlatform.Android)
                return defaultResult.Value;
#if UNITY_ANDROID
var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
  if (unityPlayer == null)
    throw new InvalidOperationException("unityPlayer == null");
  var _currentActivity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
  if (_currentActivity == null)
    throw new InvalidOperationException("_currentActivity == null");
            var packageManager = _currentActivity.Call<AndroidJavaObject>("getPackageManager");
            if (packageManager == null)
                throw new InvalidOperationException("getPackageManager() == null");
            // http://developer.android.com/reference/android/content/pm/PackageManager.html#GET_SIGNATURES
            const int getSignaturesFlag = 64;
            var packageInfo = packageManager.Call<AndroidJavaObject>("getPackageInfo", PackageName, getSignaturesFlag);
            if (packageInfo == null)
                throw new InvalidOperationException("getPackageInfo() == null");
            var signatures = packageInfo.Get<AndroidJavaObject[]>("signatures");
            if (signatures == null)
                throw new InvalidOperationException("signatures() == null");
            using (var sha1 = new SHA1Managed())
            {
                var hashes = signatures.Select(s => s.Call<byte[]>("toByteArray"))
                    .Where(s => s != null)
                    .Select<byte[], byte[]>(sha1.ComputeHash);
                var result = hashes.FirstOrDefault() ?? defaultResult.Value;
                return result;
            }
#else
            return defaultResult.Value;
#endif

internal int Value
{
  get { return _salt ^ _saltedValue; }
  set { _saltedValue = _salt ^ value; }
}

private static int[] refNumbers;
internal static void Start()
{
  refNumbers = new int[1000];
  for (int i = 0; i < refNumbers.Length; i++)
  {
    refNumbers[i] = i;
  }
}
internal static bool Check()
{
  for (int i = 0; i < 1000; i++)
  {
    if (!refNumbers [i].Equals(i))
      return true;
  }
}