Google TOTP decode and self-generate

Pre-requirements

An ubuntu system

with python3 supports with python3-pip with package installer, likes apt

Step1. Export TOTP

Export your TOTP from Google Authenticator by using "Transfer Codes". Take a screenshot of the generated QR-Code.

Step 2. Decode the exports

Step 2-1. Decode QR-code

Install dependencies

sudo apt install -y libzbar0

pip install pyzbar pillow

Run the script

from pyzbar.pyzbar import decode
from PIL import Image

img = Image.open('google_auth.jpg')

decoded_objects = decode(img)

for obj in decoded_objects:
    print('Type:', obj.type)
    print('Data:', obj.data.decode('utf-8'), '\n')

The script output should be

Type: QRCODE
Data: otpauth-migration://offline?data=...

Just save the string after data paramater