Notes on Adapty.js Script

General Information

• Title: Adapty.js Script
• Date: 2024-09-29
• Author: chxm1023
• Source URL: Adapty.js

Functionality Overview

The script is designed to interact with the API of Adapty for validating in-app purchases and managing subscriptions.

Rewrite Local

• Pattern: Matches URLs for Adapty API, particularly those involved with analytics or purchase validations.
• Script: Uses adapty.js from GitHub to handle response bodies for these URLs.

Man-In-The-Middle (MITM)

• Hostname Intercepted: api.adapty.io

Script Details

Variables and Constants

• User Agent and Profile ID: Extracted from request headers.
• Current Time: Captured using Date.now().

Apps and Subscriptions

• List of Apps:
  • SketchAR
  • Universal (TVRemote)
  • Lingvist
  • ChatAI
  • FacePlus
  • Batched
• String Identifiers:
  • Each app has a unique identifier for subscription ID, bundle ID, and a dynamic key (dy).

Template Structures

• PremiumTemplate: Data structure representing a lifetime subscription.
• ReceiptTemplate: Represents purchase receipt information.

Main Processing Loop

• Iterates through the list of apps to check if the user-agent matches any app pattern.
• Based on the app type (dypda or dypdb), constructs subscription and receipt data.

Response Modification

• Analytics and Purchase Handling:
  • Modifies the response data (chxm1023) for purchase validation and analytics profiles.
  • Updates attributes such as app ID, profile ID, subscriptions, and validation results.
• Receipt Validation:
  • Constructs receipt validation data, including receipt details, status, and renewal info.

Logging

• Outputs a message linking back to a Telegram channel.

Conclusion

The script effectively modifies responses for specific API endpoints related to in-app purchases and subscriptions through Adapty, enabling certain functionalities for app users based on their usage patterns.