duo-bypass

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Duo One Time Password Generator

This is a little script I put together after I reverse engineered the Duo 2FA Mobile App and figured out how their auth flow works. This can be ported into probably a useful desktop app or chrome extention and can probably be used to write bots for MIT Services that require auth.

Usage

Install stuff,

pip install -r requirements.txt

Grab the text from the QR code, it is the format: XXXXXXXXXX-YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

Use https://www.base64decode.org/ to decode YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY and put it in 'host'

Decoded format should be in the format: api-XXXXX.duosecurity.com . Place that in "Host"

Then run:

./duo_activate.py

If everything worked you can then generate a code by running:

./duo_gen.py

Warning: These are HOTP tokens and generate codes increments a counter. If you get too far out of sync with the server it will stop accepting your codes.

./duo_export.py

Export the duo hotp secret as a QR code for inclusion in third-party hotp apps like freeotp.