recover_coinbase_wallet.js

var crypto = require('crypto');

// Your password goes here
var password = '***';
let utf8Encode = new TextEncoder();

                async function generateKey(e, n) {
                    const r = await crypto.subtle.importKey("raw", e, "PBKDF2", !1, ["deriveBits", "deriveKey"]);
                    return crypto.subtle.deriveKey({
                        name: "PBKDF2",
                        salt: n,
                        iterations: 3e5,
                        hash: "SHA-256"
                    }, r, {
                        name: "AES-GCM",
                        length: 256
                    }, !0, ["encrypt", "decrypt"])
                }

// Recovered wallet data goes here
var recovered = {"mnemonic":"","salt":[],"passwordIv":[]};
var pwd = utf8Encode.encode(password);
var salt = Buffer.from(recovered.salt);
generateKey(pwd, salt)
.then(k => {
  var decrypted = crypto.subtle.decrypt({name:"AES-GCM",iv:Buffer.from(recovered.passwordIv)}, k, Buffer.from(recovered.mnemonic, 'base64'));
decrypted.then(plaintext => console.log(new TextDecoder().decode(plaintext)));
});