chowder

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

therustmonk

# Usage: git total [OPTION...]
#
# Options:
#
#   In theory, the command accepts all command line options supported by
#   the "git log" command. In reality, however, only few commit-limiting
#   options are useful. This includes:
#
#   --author=PATTERN, --committer=PATTERN
#       Displays the number of lines changed by a certain author.

dario2994

#!/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