hcaptcha-hsj-hsw-reversed

The "HCAPTCHA HSJ HSW Reversed" tool offers byte-accurate extraction of master keys from hCaptcha's JavaScript bundles `hsj.js` and `hsw.js`, revealing six build-static AES-256 master keys in under twenty-five seconds. Its primary use case is for capturing and verifying keys used in encrypted communications by leveraging a reverse-engineered AES-256-CTR cipher, ensuring all keys are verified through structured analysis. Notable features include deterministic fingerprinting for builds and end-to-end verification for five of the keys, enhancing reliability in cryptographic applications.