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darwin_path_generator.py
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darwin_path_generator.py
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# Sample implementation of Darwin_USER_ folders path generation
# Copyright (c) 2017 Yogesh Khatri <yogesh@swiftforensics.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You can get a copy of the complete license here:
# <http://www.gnu.org/licenses/>.
#
# Script Name : darwin_path_generator.py
# Author : Yogesh Khatri
# Last Updated : 4/25/2017
# Purpose/Usage: This script will generate the DARWIN_USER_ folder path
# given a user's UUID and UID. These are the folders found
# under /var/folders/
#
from __future__ import print_function
import binascii
def GetDarwinPath(uuid, uid):
'''Returns DARWIN_USER_FOLDER path constructed from UUID and UID for
osx older than Mavericks(10.9)'''
charset ='+-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
uuid = uuid.replace('-', '') # strip '-' if present
#Convert uid to hex 8 byte string
uid = '{:08x}'.format(int(uid)) # input uid may be int or string (decimal)
hex_string = uuid + uid
binary_string = ''.join('{0:04b}'.format(int(c, 16)) for c in hex_string) # get binary string
size = len(binary_string)
darwin_path = ''
for x in range(0, size, 6):
index = binary_string[x:x+6]
darwin_path += charset[int(index, 2)]
if x == 6:
darwin_path += '/' + darwin_path
return darwin_path
def GetDarwinPath2(uuid, uid):
'''Returns DARWIN_USER_FOLDER path constructed from UUID and UID.
This is the algorithm for newer osx - Mavericks(10.9) thru Sierra(10.12)'''
charset ='0123456789_bcdfghjklmnpqrstvwxyz'
uuid = uuid.replace('-', '') # strip '-' if present
#Convert uid to hex 8 byte string
uid = '{:08x}'.format(int(uid)) # input uid may be int or string (decimal)
hex_string = uuid + uid
binary_string = ''.join('{0:04b}'.format(int(c, 16)) for c in hex_string) # get binary string
size = len(binary_string)
darwin_path = ''
for x in range(0, size, 5):
index = binary_string[x:x+5]
darwin_path += charset[int(index, 2)]
if x == 5:
darwin_path += '/'
return darwin_path
#print(GetDarwinPath2('3CEEF7A5-A3D9-47DC-82C1-8E386A1EA83B', 502))
# Computing path for root user
root_uuid='FFFFEEEEDDDDCCCCBBBBAAAA00000000'
root_uid = 0
path_on_older_mac = GetDarwinPath(root_uuid, root_uid)
path_on_newer_mac = GetDarwinPath2(root_uuid, root_uid)
print('Darwin folder path for root on older macs is /var/folders/' + path_on_older_mac)
print('Darwin folder path for root on newer macs is /var/folders/' + path_on_newer_mac)