February 15, 2023: Decrypting Salted Base64 of finance.yahoo.com using Google Apps Script

function myFunction() {
  // Load crypto-js.min.js.
  const cdnjs =
    "https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.1.1/crypto-js.min.js";
  eval(UrlFetchApp.fetch(cdnjs).getContentText());

  // Retrieve HTML and retrieve salted base64.
  const url = "https://finance.yahoo.com/quote/PGEN/press-releases"; // This is a sample URL.
  const html = UrlFetchApp.fetch(url)
    .getContentText()
    .match(/root.App.main = ([\s\S\w]+?);\n/);
  if (!html || html.length == 1) return;
  const tempObj = JSON.parse(html[1].trim().replace(/\n/g, ""));
  let obj;
  if (
    typeof tempObj.context.dispatcher.stores === "string" ||
    tempObj.context.dispatcher.stores instanceof String
  ) {
    const keyFile =
      "https://github.com/ranaroussi/yfinance/raw/main/yfinance/scrapers/yahoo-keys.txt";
    const res = UrlFetchApp.fetch(keyFile);
    const keys = res.getContentText().split("\n").filter(String);
    obj = keys.reduce((ar, key) => {
      try {
        obj = JSON.parse(
          CryptoJS.enc.Utf8.stringify(
            CryptoJS.AES.decrypt(tempObj.context.dispatcher.stores, key.trim())
          )
        );
        ar.push(obj);
      } catch (e) {
        // console.log(e.message)
      }
      return ar;
    }, []);
    if (obj.length == 0) {
      throw new Error(
        "Specification at the server side might be changed. Please check it."
      );
    }
    obj = obj[0];
  } else {
    obj = tempObj.context.dispatcher.stores;
  }
  console.log(obj);
}