SteamAutoAuth

A chrome web extension to ease logging into multiple steam accounts.

Features

• Easily manage multiple Steam accounts within the extension
• Automatically log in to accounts
• Instantly generate Steam Guard mobile authenticator codes
• Everything is stored locally on your device

Usage

Installing the Extension In Chrome

1. Download the latest release or clone the repository.

2. If you cloned the repository, run npm install && npm run build.

3. Go to chrome://extensions.

4. Enable the developer mode, then click Load Unpacked.

   • If you downloaded the release, just unzip the folder and load it.
   • If you cloned the repository, load the folder in build/chrome-mv3

5. The extension should now be loaded.

How to add an account

To add an account, click the extension's icon in the chrome bar and click Add Account.

Enter the username (required) of the account as well as the password and/or shared secret.

You can also bulk import accounts by clicking Add Bulk on the Add Account screen. The format is Username:Password:SharedSecret.

Now when you enter the username in the Steam Login Username Input, the password and/or the code will automatically be input, as well as all the Sign In/Submit buttons being clicked.

Note: There is a small delay before the script kicks in to ensure the username isn't changed in the input box.

If you want more details as to what exactly happens:

• Username and Password

  • When the username is detected in the username input, the password will automatically be entered into the password input.
  • The sign in button is automatically pressed after a delay assuming no new characters have been input into the username input.

• Username and Shared Secret

  • When the username is detected in the account name box, and the sign in button is pressed, the shared secret is used to generate a code which is inserted into the code input and automatically presses the submit button.

• Username, Password and Shared Secret

  • When the username is detected in the username input, the password will automatically be entered into the password input.
  • The sign in button is automatically pressed after a delay assuming no new characters have been input into the username input.
  • Once the Steam Guard Code input is shown, the shared secret is used to generate a code which is inserted into the code input and automatically presses the submit button.

Shared Secret

What is a shared secret?

TL;DR: Essentially a code which generates your Steam Guard Code, depending on the time, so you can login.

• Shared Secret is a code generated by Steam when you get mobile authenticator.
• Using a series of steps involving the current time your steam guard code is generated.
• Since it involves the current time, it changes every 30 seconds.
• The steps do not require an internet connection and therefore, the code can be generated offline.

You will need either a rooted Android phone, an iPhone or Steam Desktop Authenticator.

How to get your shared secret

Rooted Android

iOS/iPhone

Steam Desktop Authenticator

Security

All account details are kept in chrome.storage.local (i.e. your local device). Nothing is sent to a server.

Help

If you have any queries or need help, make an issue here.