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mgeeky-Penetration-Testing-.../red-teaming/markOwnedNodesInNeo4j.py

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2020-03-05 13:21:59 +01:00
#!/usr/bin/python3
#
# This script takes an input file containing Node names to be marked in Neo4j database as
# owned = True. The strategy for working with neo4j and Bloodhound becomes fruitful during
# complex Active Directory Security Review assessments or Red Teams. Imagine you've kerberoasted
# a number of accounts, access set of workstations or even cracked userPassword hashes. Using this
# script you can quickly instruct Neo4j to mark that principals as owned, which will enrich your
# future use of BloodHound.
#
# Mariusz B. / mgeeky
#
import sys
import os
import time
try:
from neo4j import GraphDatabase
except ImportError:
print('[!] "neo4j >= 1.7.0" required. Install it with: python3 -m pip install neo4j')
#
# ===========================================
#
# Specify neo4j connection details
NEO4J_CONNECTION_DETAILS = \
{
'Host': '127.0.0.1', # neo4j listening address.
'Port': 7687, # Bolt port
'User': 'neo4j',
'Pass': 'neo4j1'
}
#
# ===========================================
#
#
# Construct a MATCH ... SET owned=TRUE query of not more than this number of nodes.
# This number impacts single query execution time. If it is more than 1000, neo4j may complain
# about running out of heap memory space (java...).
#
numberOfNodesToAddPerStep = 500
def markNodes(tx, nodes):
query = ''
for i in range(len(nodes)):
n = nodes[i]
query += 'MATCH (n {name: "' + n + '"}) SET n.owned=TRUE RETURN 1'
if i < len(nodes) - 1: query += ' UNION'
query += '\n'
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tx.run(query)
def main(argv):
if len(argv) != 2:
print('''
Takes a file containing node names on input and marks them as Owned in specified neo4j database.
Usage: ./markOwnedNodesInNeo4j.py <nodes-file>
''')
return False
nodesFile = argv[1]
programStart = time.time()
if not os.path.isfile(nodesFile):
print(f'[!] Input file containing nodes does not exist: "{nodesFile}"!')
return False
nodes = []
with open(nodesFile) as f: nodes = [x.strip() for x in f.readlines()]
try:
driver = GraphDatabase.driver(
f"bolt://{NEO4J_CONNECTION_DETAILS['Host']}:{NEO4J_CONNECTION_DETAILS['Port']}",
auth = (NEO4J_CONNECTION_DETAILS['User'], NEO4J_CONNECTION_DETAILS['Pass']),
encrypted = False,
connection_timeout = 10,
max_retry_time = 5,
keep_alive = True
)
except Exception as e:
print(f'[-] Could not connect to the neo4j database. Reason: {str(e)}')
return False
print('[.] Connected to neo4j instance.')
if len(nodes) >= 200:
print('[*] Warning: Working with a large number of nodes may be time-consuming in large databases.')
print('\te.g. setting 1000 nodes as owned can take up to 10 minutes easily.')
print()
finishEta = 0.0
totalTime = 0.0
runs = 0
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print('[+] To be marked: {} nodes.'.format(len(nodes)))
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try:
with driver.session() as session:
for a in range(0, len(nodes), numberOfNodesToAddPerStep):
b = a + min(numberOfNodesToAddPerStep, len(nodes) - a)
print(f'[.] Marking nodes ({a}..{b}) ...')
start = time.time()
session.write_transaction(markNodes, nodes[a:b])
stop = time.time()
totalTime += (stop - start)
runs += 1
finishEta = ((len(nodes) / numberOfNodesToAddPerStep) - runs) * (totalTime / float(runs))
if finishEta < 0: finishEta = 0
print(f'[+] Marked {b-a} nodes in {stop - start:.3f} seconds. Finish ETA: in {finishEta:.3f} seconds.')
except KeyboardInterrupt:
print('[.] User interruption.')
driver.close()
return False
driver.close()
programStop = time.time()
print(f'\n[+] Nodes marked as owned successfully in {programStop - programStart:.3f} seconds.')
if __name__ == '__main__':
main(sys.argv)