This script find cookie by name in Chrome cookies database. It will try to find all cookie files in any Chrome profile directory and return the first one found. Should build it and compile to use for performance: bun build get-cookie.ts --compile

get-cookie.ts

#!/Users/bytedance/.bun/bin/bun
import { $ } from 'bun';
import crypto from "crypto";
import { Database } from "bun:sqlite";

const salt = "saltysalt";                // 盐
const iv = "".padStart(16, " ");         // 16-byte empty string (spaces)
const keyLengthBits = 128;               // 长度 (bits)
const iterations = 1003;                 // 迭代次数
const password = await getChromeSecurityKey();

async function getCookieFiles() {
  const chromeDir = `${Bun.env.HOME}/Library/Application Support/Google/Chrome`;
  const entries = await $`ls ${chromeDir}`.text();
  const cookieFiles = [];
  for (const entry of entries.split('\n')) {
    const dbPath = `${chromeDir}/${entry}/Cookies`;
    if (await Bun.file(dbPath).exists()) {
      cookieFiles.push(dbPath);
    }
  }
  return cookieFiles;
}

async function getCookie(cookieName: string, file: string) {
  const db = new Database(file, { readonly: true });
  const cookies = db.query(`SELECT host_key, name, value, encrypted_value FROM cookies WHERE name = '${cookieName}'`).all();
  if (cookies.length > 0) {
    return cookies[0];
  }
}

async function getChromeSecurityKey() {
  const key = await $`security find-generic-password -a "Chrome" -w`.text();
  return key.trim();
}

async function decryptCookie(encryptedCookie: Uint8Array) {
  const key = crypto.pbkdf2Sync(
    password,
    Buffer.from(salt, "utf8"),
    iterations,
    keyLengthBits / 8,   // convert bits → bytes
    "sha1"
  );

  // ---- AES-128-CBC Decrypt ----
  const decipher = crypto.createDecipheriv(
    "aes-128-cbc",
    key,
    Buffer.from(iv, "utf8")
  );

  // Equivalent to Arrays.copyOfRange(encryptedCookie, 3, encryptedCookie.length)
  const encryptedPayload = encryptedCookie.subarray(3);

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

  // ---- Result ----
  const textDecoder = new TextDecoder('utf-8');
  console.log(textDecoder.decode(decrypted.slice(32)));
}

if (Bun.argv.length !== 3) {
  console.log(`This script find cookie by name in Chrome cookies database.
It will try to find all cookie files in any Chrome profile directory and return the first one found.
$ Usage: get-cookie <cookie-name>`);
  process.exit(0);
}

const cookieFiles = await getCookieFiles();
for (const file of cookieFiles) {
  const cookie = await getCookie(Bun.argv[2], file);
  if (cookie) {
    if (cookie.value) console.log(cookie.value);
    else {
      await decryptCookie(cookie.encrypted_value);
      process.exit(0);
    }
  }
}

console.log('Not found');
process.exit(1);