Chiaki helper script to determine Account ID from any modern browser

README.md

Instructions

1. Open the browser of your choice
2. Visit https://playstation.com (and sign out if you are signed in)
3. Open the developer tools for your browser, and click on the network activity tab
4. Choose to preserve the network log on the network tab

5. Now sign back into the playstation site
6. Search the network activity for requests named id, and click on one of them
7. Find the Request Headers section and look for the Authorization header
8. Record the bearer token of the authorization header that matches: Authorization: Bearer [COPY_ALPHANUM_HERE], you will need this in a second
9. Open a new tab, and navigate to https://web.np.playstation.com/ (it will say 'Access Denied', it's safe to ignore)

10. Open the developer tools, navigate to the console tab, copy & paste the script from here into the console, and hit enter
11. Enter the bearer token and click OK

Congrats, you should see your account id, and if you are using a browser that supports clipboard writes, it will already be in your clipboard.

index.js

(async () => {
  const bearerToken = window.prompt(
    `Enter the Authorization header bearer token here:`
  );

  function longToByteArray(long) {
    let byteArray = [0, 0, 0, 0, 0, 0, 0, 0];
    let big = BigInt(long);

    for (let index = 0; index < byteArray.length; index++) {
      const byte = Number(big & 0xffn);
      byteArray[index] = byte;
      big = BigInt((big - BigInt(byte)) / 256n);
    }

    return byteArray;
  }

  function arrayBufferToBase64(buffer) {
    let binary = '';
    const bytes = new Uint8Array(buffer);
    for (let i = 0; i < bytes.byteLength; i++) {
      binary += String.fromCharCode(bytes[i]);
    }
    return window.btoa(binary);
  }

  let base64AccountId;
  try {
    const res = await fetch(
      'https://web.np.playstation.com/api/basicProfile/v1/profile/users/me',
      {
        credentials: 'include',
        headers: {
          'User-Agent':
            'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:104.0) Gecko/20100101 Firefox/104.0',
          Accept: '*/*',
          'Accept-Language': 'en-US,en;q=0.5',
          Authorization: `Bearer ${bearerToken}`,
          'Content-Type': 'application/json; charset=utf-8',
        },
      }
    );
    const { accountId } = await res.json();
    base64AccountId = arrayBufferToBase64(longToByteArray(accountId));
  } catch (err) {
    console.error(`Something went wrong... Sorry!`);
    console.error(err);
  }

  try {
    await navigator.permissions.query({ name: 'clipboard-write' });
  } catch (err) {}

  try {
    await navigator.clipboard.writeText(base64AccountId);
    console.log(`Account ID has been copied to clipboard successfully!`);
  } catch (err) {
    console.error(err);
  }
  if (base64AccountId) {
    console.log(`Account ID is ${base64AccountId}`);
  }
})();