Alex
GitHub
commit
31b2a1f458
|
|
@ -1,107 +1,34 @@
|
|||
# Original from here: https://github.com/nopfor/ntlm_challenger
|
||||
# Original from here: https://github.com/fortra/impacket/blob/master/examples/DumpNTLMInfo.py#L568
|
||||
|
||||
import datetime
|
||||
import struct
|
||||
|
||||
from impacket import ntlm
|
||||
from impacket.smb3 import WIN_VERSIONS
|
||||
import contextlib
|
||||
|
||||
|
||||
def decoder(byte_string, decode_type):
|
||||
if decode_type == "byte":
|
||||
return byte_string.decode("UTF-8").replace("\x00", "")
|
||||
else:
|
||||
return int.from_bytes(byte_string, "little")
|
||||
|
||||
|
||||
def parse_version(version_bytes):
|
||||
major_version = version_bytes[0]
|
||||
minor_version = version_bytes[1]
|
||||
product_build = decoder(version_bytes[2:4], "int")
|
||||
if product_build in WIN_VERSIONS:
|
||||
return f"{WIN_VERSIONS[product_build]} Build {product_build}"
|
||||
else:
|
||||
return f"Windows {major_version}.{minor_version} Build {product_build}"
|
||||
|
||||
|
||||
def parse_target_info(target_info_bytes):
|
||||
MsvAvEOL = 0x0000
|
||||
MsvAvNbComputerName = 0x0001
|
||||
MsvAvNbDomainName = 0x0002
|
||||
MsvAvDnsComputerName = 0x0003
|
||||
MsvAvDnsDomainName = 0x0004
|
||||
MsvAvDnsTreeName = 0x0005
|
||||
MsvAvFlags = 0x0006
|
||||
MsvAvTimestamp = 0x0007
|
||||
MsvAvSingleHost = 0x0008
|
||||
MsvAvTargetName = 0x0009
|
||||
MsvAvChannelBindings = 0x000A
|
||||
|
||||
def parse_challenge(challange):
|
||||
target_info = {
|
||||
"MsvAvNbComputerName": None,
|
||||
"MsvAvDnsDomainName": None,
|
||||
"hostname": None,
|
||||
"domain": None,
|
||||
"os_version": None
|
||||
}
|
||||
info_offset = 0
|
||||
|
||||
while info_offset < len(target_info_bytes):
|
||||
av_id = decoder(target_info_bytes[info_offset:info_offset + 2], "int")
|
||||
av_len = decoder(target_info_bytes[info_offset + 2:info_offset + 4], "int")
|
||||
av_value = target_info_bytes[info_offset + 4:info_offset + 4 + av_len]
|
||||
|
||||
info_offset = info_offset + 4 + av_len
|
||||
|
||||
if av_id == MsvAvEOL:
|
||||
pass
|
||||
elif av_id == MsvAvNbComputerName:
|
||||
target_info["MsvAvNbComputerName"] = decoder(av_value, "byte")
|
||||
elif av_id == MsvAvNbDomainName:
|
||||
target_info["MsvAvNbDomainName"] = decoder(av_value, "byte")
|
||||
elif av_id == MsvAvDnsComputerName:
|
||||
target_info["MsvAvDnsComputerName"] = decoder(av_value, "byte")
|
||||
elif av_id == MsvAvDnsDomainName:
|
||||
target_info["MsvAvDnsDomainName"] = decoder(av_value, "byte")
|
||||
elif av_id == MsvAvDnsTreeName:
|
||||
target_info["MsvAvDnsTreeName"] = decoder(av_value, "byte")
|
||||
elif av_id == MsvAvFlags:
|
||||
pass
|
||||
elif av_id == MsvAvTimestamp:
|
||||
filetime = decoder(av_value, "int")
|
||||
microseconds = (filetime - 116444736000000000) / 10
|
||||
time = datetime.datetime(1970, 1, 1) + datetime.timedelta(microseconds=microseconds)
|
||||
target_info["MsvAvTimestamp"] = time.strftime("%b %d, %Y %H:%M:%S.%f")
|
||||
elif av_id == MsvAvSingleHost:
|
||||
target_info["MsvAvSingleHost"] = decoder(av_value, "byte")
|
||||
elif av_id == MsvAvTargetName:
|
||||
target_info["MsvAvTargetName"] = decoder(av_value, "byte")
|
||||
elif av_id == MsvAvChannelBindings:
|
||||
target_info["MsvAvChannelBindings"] = av_value
|
||||
challange = ntlm.NTLMAuthChallenge(challange)
|
||||
av_pairs = ntlm.AV_PAIRS(challange["TargetInfoFields"][:challange["TargetInfoFields_len"]])
|
||||
if av_pairs[ntlm.NTLMSSP_AV_HOSTNAME] is not None:
|
||||
with contextlib.suppress(Exception):
|
||||
target_info["hostname"] = av_pairs[ntlm.NTLMSSP_AV_HOSTNAME][1].decode("utf-16le")
|
||||
if av_pairs[ntlm.NTLMSSP_AV_DNS_DOMAINNAME] is not None:
|
||||
with contextlib.suppress(Exception):
|
||||
target_info["domain"] = av_pairs[ntlm.NTLMSSP_AV_DNS_DOMAINNAME][1].decode("utf-16le")
|
||||
if "Version" in challange.fields:
|
||||
version = challange["Version"]
|
||||
if len(version) >= 4:
|
||||
major_version = version[0]
|
||||
minor_version = version[1]
|
||||
product_build = struct.unpack("<H", version[2:4])[0]
|
||||
if product_build in WIN_VERSIONS:
|
||||
target_info["os_version"] = f"{WIN_VERSIONS[product_build]} Build {product_build}"
|
||||
else:
|
||||
target_info["os_version"] = f"{major_version}.{minor_version} Build {product_build}"
|
||||
return target_info
|
||||
|
||||
|
||||
def parse_challenge(challenge_message):
|
||||
# TargetNameFields
|
||||
target_name_fields = challenge_message[12:20]
|
||||
target_name_len = decoder(target_name_fields[0:2], "int")
|
||||
target_name_offset = decoder(target_name_fields[4:8], "int")
|
||||
|
||||
# TargetInfoFields
|
||||
target_info_fields = challenge_message[40:48]
|
||||
target_info_len = decoder(target_info_fields[0:2], "int")
|
||||
target_info_offset = decoder(target_info_fields[4:8], "int")
|
||||
|
||||
# Version
|
||||
version = None
|
||||
version_bytes = challenge_message[48:56]
|
||||
version = parse_version(version_bytes)
|
||||
|
||||
# TargetName
|
||||
target_name = challenge_message[target_name_offset:target_name_offset + target_name_len]
|
||||
target_name = decoder(target_name, "byte")
|
||||
|
||||
# TargetInfo
|
||||
target_info_bytes = challenge_message[target_info_offset:target_info_offset + target_info_len]
|
||||
target_info = parse_target_info(target_info_bytes)
|
||||
|
||||
return {
|
||||
"target_name": target_name,
|
||||
"version": version,
|
||||
"target_info": target_info
|
||||
}
|
||||
|
|
|
|||
|
|
@ -52,9 +52,9 @@ class winrm(connection):
|
|||
|
||||
def enum_host_info(self):
|
||||
ntlm_info = parse_challenge(base64.b64decode(self.challenge_header.split(" ")[1].replace(",", "")))
|
||||
self.domain = ntlm_info["target_info"]["MsvAvDnsDomainName"]
|
||||
self.hostname = ntlm_info["target_info"]["MsvAvNbComputerName"]
|
||||
self.server_os = ntlm_info["version"]
|
||||
self.domain = ntlm_info["domain"]
|
||||
self.hostname = ntlm_info["hostname"]
|
||||
self.server_os = ntlm_info["os_version"]
|
||||
self.logger.extra["hostname"] = self.hostname
|
||||
|
||||
self.output_filename = os.path.expanduser(f"~/.nxc/logs/{self.hostname}_{self.host}_{datetime.now().strftime('%Y-%m-%d_%H%M%S')}")
|
||||
|
|
|
|||
|
|
@ -1,10 +1,10 @@
|
|||
import os
|
||||
import struct
|
||||
import logging
|
||||
|
||||
from io import StringIO
|
||||
from six import indexbytes
|
||||
from datetime import datetime
|
||||
|
||||
from nxc.helpers.ntlm_parser import parse_challenge
|
||||
from nxc.config import process_secret
|
||||
from nxc.connection import connection, dcom_FirewallChecker, requires_admin
|
||||
from nxc.logger import NXCAdapter
|
||||
|
|
@ -18,7 +18,6 @@ from impacket.dcerpc.v5 import transport, epm
|
|||
from impacket.dcerpc.v5.rpcrt import RPC_C_AUTHN_LEVEL_PKT_PRIVACY, RPC_C_AUTHN_WINNT, RPC_C_AUTHN_GSS_NEGOTIATE, RPC_C_AUTHN_LEVEL_PKT_INTEGRITY, MSRPC_BIND, MSRPCBind, CtxItem, MSRPCHeader, SEC_TRAILER, MSRPCBindAck
|
||||
from impacket.dcerpc.v5.dcomrt import DCOMConnection
|
||||
from impacket.dcerpc.v5.dcom.wmi import CLSID_WbemLevel1Login, IID_IWbemLevel1Login, IWbemLevel1Login
|
||||
import contextlib
|
||||
|
||||
MSRPC_UUID_PORTMAP = uuidtup_to_bin(("E1AF8308-5D1F-11C9-91A4-08002B14A0FA", "3.0"))
|
||||
|
||||
|
|
@ -86,7 +85,6 @@ class wmi(connection):
|
|||
def enum_host_info(self):
|
||||
# All code pick from DumpNTLNInfo.py
|
||||
# https://github.com/fortra/impacket/blob/master/examples/DumpNTLMInfo.py
|
||||
ntlmChallenge = None
|
||||
|
||||
bind = MSRPCBind()
|
||||
item = CtxItem()
|
||||
|
|
@ -123,39 +121,19 @@ class wmi(connection):
|
|||
if buffer != 0:
|
||||
response = MSRPCHeader(buffer)
|
||||
bindResp = MSRPCBindAck(response.getData())
|
||||
|
||||
ntlmChallenge = ntlm.NTLMAuthChallenge(bindResp["auth_data"])
|
||||
|
||||
if ntlmChallenge["TargetInfoFields_len"] > 0:
|
||||
av_pairs = ntlm.AV_PAIRS(ntlmChallenge["TargetInfoFields"][: ntlmChallenge["TargetInfoFields_len"]])
|
||||
if av_pairs[ntlm.NTLMSSP_AV_HOSTNAME][1] is not None:
|
||||
try:
|
||||
self.hostname = av_pairs[ntlm.NTLMSSP_AV_HOSTNAME][1].decode("utf-16le")
|
||||
except Exception:
|
||||
self.hostname = self.host
|
||||
if av_pairs[ntlm.NTLMSSP_AV_DNS_DOMAINNAME][1] is not None:
|
||||
try:
|
||||
self.domain = av_pairs[ntlm.NTLMSSP_AV_DNS_DOMAINNAME][1].decode("utf-16le")
|
||||
except Exception:
|
||||
self.domain = self.args.domain
|
||||
if av_pairs[ntlm.NTLMSSP_AV_DNS_HOSTNAME][1] is not None:
|
||||
with contextlib.suppress(Exception):
|
||||
self.fqdn = av_pairs[ntlm.NTLMSSP_AV_DNS_HOSTNAME][1].decode("utf-16le")
|
||||
if "Version" in ntlmChallenge.fields:
|
||||
version = ntlmChallenge["Version"]
|
||||
if len(version) >= 4:
|
||||
self.server_os = "Windows NT %d.%d Build %d" % (indexbytes(version, 0), indexbytes(version, 1), struct.unpack("<H", version[2:4])[0])
|
||||
ntlm_info = parse_challenge(bindResp["auth_data"])
|
||||
self.domain = ntlm_info["domain"]
|
||||
self.hostname = ntlm_info["hostname"]
|
||||
self.server_os = ntlm_info["os_version"]
|
||||
self.logger.extra["hostname"] = self.hostname
|
||||
else:
|
||||
self.hostname = self.host
|
||||
|
||||
if self.args.local_auth:
|
||||
self.domain = self.hostname
|
||||
if self.args.domain:
|
||||
self.domain = self.args.domain
|
||||
self.fqdn = f"{self.hostname}.{self.domain}"
|
||||
|
||||
self.logger.extra["hostname"] = self.hostname
|
||||
|
||||
self.output_filename = os.path.expanduser(f"~/.nxc/logs/{self.hostname}_{self.host}_{datetime.now().strftime('%Y-%m-%d_%H%M%S')}".replace(":", "-"))
|
||||
|
||||
def print_host_info(self):
|
||||
|
|
|
|||
Loading…
Reference in New Issue