Created
January 28, 2016 12:20
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Find OS X AD user UniqueID collisions
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#!/usr/bin/python | |
# -*- coding: utf-8 -*- | |
import sys | |
import base64 | |
userids = dict() | |
with open(sys.argv[1]) as f: | |
for line in f: | |
if line.startswith("dn:"): | |
username = line.partition("=")[2].partition(",")[0] | |
elif line.startswith("objectGUID:"): | |
guidb64 = line.rstrip().partition(" ")[2] | |
guidbin = base64.b64decode(guidb64) | |
guidbe = guidbin[3] + guidbin[2] + guidbin[1] + guidbin[0] | |
uniqueid = int(guidbe.encode("hex"), 16) & 0x7fffffff | |
if uniqueid in userids: | |
print "Collision: %d = %s, %s" % (uniqueid, username, userids[uniqueid]) | |
userids[uniqueid] = username |
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#!/bin/bash | |
# This limits results to usernames starting with x for testing, adjust as appropriate: (&(objectClass=user)(cn=x*)) | |
ldapsearch -LLL -H ldap://dc01.domain.example -b 'OU=Users,DC=domain,DC=example' -E pr=1000/noprompt "(&(objectClass=user)(cn=x*))" objectGUID > accounts.txt |
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