GAMpass

Written by Amado Tejada

Many Google Workspace admins use GAM or GAMADV-XTD3 to manage their instance. Currently, the secrets needed for these tools are stored on disk in plaintext.

GAMpass is a simple tool to encrypt & decrypt GAM secrets at runtime using your biometrics with unopass

Requirements

• python 3.6+
• pip install -r requirements.txt
• unopass configured
• GAM/GAMADV-XTD3 configured

Only tested on macOS 12.4+

GAMpass is a work in progress, and should be considered beta software.

First time setup

Back up your plaintext secrets in a different directory before you run setup. Once you verify you can encrypt/decrypt secrets you can delete the backup.

1. Meet the requirements
2. Move gampass.py to the same directory as GAM's secrets files, usually ~/.gam/
3. Run python gampass.py setup*
   • this encrypts GAM all secrets
     • ["client_secrets.json", "oauth2service.json", "oauth2.txt"]
     • If you have multiple GAM domains, all will be encrypted
   • this will generate a new gampass.key file.
   • this adds gampass and gampass_cli alias to ~/.zshrc
     • if you don't use ~/.zshrc, adjust in gampass.py

4. Open 1Password
   • create a vault named gampass
   • add a new password item with the title gamkey
   • add the content of the gampass.key the credential field

GAM Usage

Use this to make GAM calls

Put gampass before the GAM command

gampass gam [gam args]

gampass gam select domain2 save | gam info domain

• macOS Touch ID prompts for your biometrics decrypting the secrets

• GAM results

GAMpass CLI Usage

Use only this to manage your GAM secrets

Usage: gampass_cli [option]

Options:
        encrypt                 Encrypt GAM all secrets
        decrypt                 Decrypt GAM all secrets
        setup                   Setup a key and encrypt secrets
        updates                 View updates documentation
        sync                    Encrypt all domains with existing 1Password key
Example:
        gampass_cli sync

Limitations

Everything that works with GAM should work via GAMpass, except for the following:

• Scheduled workflows via cron, etc., do not work because intentionally biometrics are prompted to decrypt the secrets.

License

GAMpass is released under the MIT License