viewstats.com-decrypt.js

const crypto = require('crypto');
const {
  TextDecoder
} = require('util');

// Static Key and IV (from client JS)
const base64IV = "Wzk3LCAxMDksIC0xMDAsIC05MCwgMTIyLCAtMTI0LCAxMSwgLTY5LCAtNDIsIDExNSwgLTU4LCAtNjcsIDQzLCAtNzUsIDMxLCA3NF0=";
const base64Key = "Wy0zLCAtMTEyLCAxNSwgLTEyNCwgLTcxLCAzMywgLTg0LCAxMDksIDU3LCAtMTI3LCAxMDcsIC00NiwgMTIyLCA0OCwgODIsIC0xMjYsIDQ3LCA3NiwgLTEyNywgNjUsIDc1LCAxMTMsIC0xMjEsIDg5LCAtNzEsIDUwLCAtODMsIDg2LCA5MiwgLTQ2LCA0OSwgNTZd";

function parseKey(base64Str) {
  const jsonStr = Buffer.from(base64Str, 'base64').toString('utf8');
  return Uint8Array.from(JSON.parse(jsonStr));
}

// AES-GCM Decrypt
function decrypt(buffer, key, iv) {
  const tag = buffer.slice(-16); // auth tag = last 16 bytes
  const encrypted = buffer.slice(0, -16); // encrypted data
  const decipher = crypto.createDecipheriv('aes-256-gcm', key, iv);
  decipher.setAuthTag(tag);

  const decrypted = Buffer.concat([
    decipher.update(encrypted),
    decipher.final()
  ]);

  const decoded = new TextDecoder().decode(decrypted);
  return JSON.parse(decoded);
}

async function fetchAndDecrypt(url, token) {
  const iv = parseKey(base64IV);
  const key = parseKey(base64Key);

  const res = await fetch(url, {
    headers: {
      'accept': '*/*',
      'authorization': `Bearer ${token}`,
      'referer': 'https://www.viewstats.com/',
    }
  });

  const contentType = res.headers.get("content-type") || "";

  if (contentType.includes("application/json")) {
    return await res.json();
  }

  const buffer = Buffer.from(await res.arrayBuffer());
  return decrypt(buffer, key, iv);
}

(async () => {
  const token = '32ev9m0qggn227ng1rgpbv5j8qllas8uleujji3499g9had6oj7f0ltnvrgi00cq';
  const url = `https://api.viewstats.com/channels/%40mrbeast`;

  try {
    const result = await fetchAndDecrypt(url, token);
    console.dir(result, {
      depth: null
    });
  } catch (err) {
    console.error("❌ Decryption failed:", err.message);
  }
})();

Thanks to
https://youtu.be/TEwE3fol_As?si=YOfHmwYfouLb82cC