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Nikola Stojkovski EntityPlantt

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@chowder
chowder / README.md
Last active September 16, 2024 12:13
Exporting Microsoft Authenticator TOTP secrets

Background

Workplaces may enforce TOTP 2FA to be enabled Office 365 accounts, which require the Microsoft Authenticator app to be installed.

Regular TOTP applications (such as Aegis, Authy, or LastPass) cannot be used as Microsoft uses a proprietary scheme called phonefactor. Furthermore, the application requires Google Services Framework (GSF) to be installed (likely to provide device notifications), and will refuse to work when it is not present on the device.

Forunately, after the registration is complete, the underlying mechanism the app uses to generate TOTP codes is regular otpauth, and its secrets can be exported with a little bit of effort.

Extracting the keys

@dario2994
dario2994 / generate_hcn.py
Last active September 12, 2024 20:21
Highly composite numbers list
#!/usr/bin/env python3
# This program prints all hcn (highly composite numbers) <= MAXN (=10**18)
#
# The value of MAXN can be changed arbitrarily. When MAXN = 10**100, the
# program needs less than one second to generate the list of hcn.
from math import log
MAXN = 10**18