xc.com RE

xc.com.js

fetch('https://xc.com/js/tripledes.js')
  .then(res => res.text())
  .then(source => {
    eval(source.replace('export { encryptByDES, decryptByDES }', ''));
    const decryptKey = 'iZTE2V29USHROXhH';
    const encryptKey = 'Yo2NpZNkgVGRKSWN';
    
    CHAT_API.ws.addEventListener('message', ({ data }) => {
      const decrypted = JSON.parse(decryptByDES(arrToB64(data), decryptKey))?.result?.text;
      decrypted && console.log(decrypted);
    });
    
    const data = {
      id: Date.now(),
      method: '/chat/dialog/text',
      params: {
        msgText: 'Hello?'
      }
    };
    
    CHAT_API.ws.send(bToArr(encryptByDES(JSON.stringify(data), encryptKey)));
  });

function base64ToArrayBuffer(b64) {
  return Uint8Array.from(atob(b64), char => char.charCodeAt(0)).buffer
}

function ArrayBufferToBase64(bfr) {
  return btoa(String.fromCharCode(...new Uint8Array(bfr)));
}