Converts Windows Registry dates to a human readable format

windows_registry_date_convert.py

"""
Copyright (c) 2024 Marius Ciepluch

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""

from __future__ import division
import struct
from binascii import unhexlify
from datetime import datetime, timedelta

# Convert the hex string to a bytes-like object
nt_timestamp_bytes = unhexlify("ea47a027cf07da01")

# Unpack the bytes object to get the NT timestamp (as a tuple)
nt_timestamp_tuple = struct.unpack("<Q", nt_timestamp_bytes)

# Extract the integer from the tuple
nt_timestamp = nt_timestamp_tuple[0]

# Calculate the datetime from the NT timestamp
epoch = datetime(1601, 1, 1, 0, 0, 0)
nt_datetime = epoch + timedelta(microseconds=nt_timestamp / 10)

print(nt_datetime)  # This will print the calculated date and time