Self Defending

Potency High

Resilience High

Cost High

Tags: rasp, tampering, debugging

Description

Self Defending protects functions and object literals concealing their logic, blocking code tampering attempts with anti-tampering techniques, and detecting debuggers to trigger defenses that thwart reverse engineering attempts. Countermeasures can be specified (optionally) to be executed when someone tries to debug or tamper with the code.

Note: if you intend to minify your code after protecting it with Jscrambler, make sure that the tolerateMinification flag is enabled in your application. This makes it so that the modifications done by this process are not treated as malicious by this and other transformations. We nonetheless recommend that you use Jscrambler after minifying your code, as the last step of your build process, for optimum results. You can learn more about how to configure your application here.

Code Annotation Example

// @jscrambler define selfDefending {threshold: 10480, options: [tolerateBenignPoisoning], countermeasures: {deleteCookies: 1, redirect: /logout}} as sd
// @jscrambler enable sd

Option Types

Name	Required	Default Value	Description
threshold	No	10240	Minimum size (in bytes) that a function / object literal must have to be targeted by the transformation.
options	No	[]	List of available options
countermeasures	No	{"deleteCookies": false,"realTimeNotifications": false,"selfDestruct": false}	List of available countermeasures

Options

Name	Description
tolerateBenignPoisoning	Blocks only malicious native function poisoning

Countermeasures

Name	Description
customCallback	Name of the `function` to be called as a countermeasure.
deleteCookies	Deletes all the cookies accessible via JavaScript.
redirect	Redirects the user to a specific URL.
realTimeNotifications	Sends a notification when a violation occurs.
selfDestruct	Attempts to damage the state and behavior of the application and/or the environment that is running the application.

Browser Compatibility

Browser	Compatible Versions	Tested Versions
Chrome	50+	50+
Firefox	50+	40+
Internet Explorer	8+	8+
Microsoft Edge	18+	18+
Safari	9.1+	9.1+

API Parameters

Example:

{
  "keys": {
    "accessKey": "XXXXXX",
    "secretKey": "YYYYYY"
  },
  "applicationId": "ZZZZZZ",
  "params": [
    {
      "name": "selfDefending",
      "options": {
        "threshold": 10240,
        "options": [],
        "countermeasures": {
          "customCallback": null,
          "deleteCookies": false,
          "redirect": null,
          "realTimeNotifications": false,
          "selfDestruct": false
        }
      }
    }
  ]
}