1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
local os = require "os"
local datetime = require "datetime"
local http = require "http"
local shortport = require "shortport"
local stdnse = require "stdnse"
local base64 = require "base64"
local smbauth = require "smbauth"
local string = require "string"
description = [[
This script enumerates information from remote HTTP services with NTLM
authentication enabled.
By sending a HTTP NTLM authentication request with null domain and user
credentials (passed in the 'Authorization' header), the remote service will
respond with a NTLMSSP message (encoded within the 'WWW-Authenticate' header)
and disclose information to include NetBIOS, DNS, and OS build version if
available.
]]
---
-- @usage
-- nmap -p 80 --script http-ntlm-info --script-args http-ntlm-info.root=/root/ <target>
--
-- @args http-ntlm-info.root The URI path to request
--
-- @output
-- 80/tcp open http
-- | http-ntlm-info:
-- | Target_Name: ACTIVEWEB
-- | NetBIOS_Domain_Name: ACTIVEWEB
-- | NetBIOS_Computer_Name: WEB-TEST2
-- | DNS_Domain_Name: somedomain.com
-- | DNS_Computer_Name: web-test2.somedomain.com
-- | DNS_Tree_Name: somedomain.com
-- |_ Product_Version: 6.1.7601
--
--@xmloutput
-- <elem key="Target_Name">TELME</elem>
-- <elem key="NetBIOS_Domain_Name">TELME</elem>
-- <elem key="NetBIOS_Computer_Name">GT4</elem>
-- <elem key="DNS_Domain_Name">telme.somedomain.com</elem>
-- <elem key="DNS_Computer_Name">gt4.telme.somedomain.com</elem>
-- <elem key="Product_Version">5.0.2195</elem>
author = "Justin Cacak"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"default", "discovery", "safe"}
portrule = shortport.http
local auth_blob = base64.enc( select( 2,
smbauth.get_security_blob(nil, nil, nil, nil, nil, nil, nil,
0x00000001 + -- Negotiate Unicode
0x00000002 + -- Negotiate OEM strings
0x00000004 + -- Request Target
0x00000200 + -- Negotiate NTLM
0x00008000 + -- Negotiate Always Sign
0x00080000 + -- Negotiate NTLM2 Key
0x20000000 + -- Negotiate 128
0x80000000 -- Negotiate 56
))
)
action = function(host, port)
local output = stdnse.output_table()
local root = stdnse.get_script_args(SCRIPT_NAME .. ".root") or "/"
-- Inject NTLM authorization header with null domain and user credentials
local opts = { header = { Authorization = "NTLM " .. auth_blob } }
local response = http.get( host, port, root, opts )
local recvtime = os.time()
-- Continue only if correct header (www-authenticate) and NTLM response are included
if response.header["www-authenticate"] and string.match(response.header["www-authenticate"], "NTLM ([a-zA-Z0-9///+=]*)") then
-- Extract NTLMSSP response and base64 decode
local data = base64.dec(string.match(response.header["www-authenticate"], "NTLM ([a-zA-Z0-9///+=]*)"))
-- Leverage smbauth.get_host_info_from_security_blob() for decoding
local ntlm_decoded = smbauth.get_host_info_from_security_blob(data)
if ntlm_decoded.timestamp then
-- 64-bit number of 100ns clicks since 1/1/1601
local unixstamp = ntlm_decoded.timestamp // 10000000 - 11644473600
datetime.record_skew(host, unixstamp, recvtime)
end
-- Target Name will always be returned under any implementation
output.Target_Name = ntlm_decoded.target_realm
-- Only display information returned (varies especially with open source implementations)
-- Additionally ignore responses with null values (very rare)
if ntlm_decoded.netbios_domain_name and #ntlm_decoded.netbios_domain_name > 0 then
output.NetBIOS_Domain_Name = ntlm_decoded.netbios_domain_name
end
if ntlm_decoded.netbios_computer_name and #ntlm_decoded.netbios_computer_name > 0 then
output.NetBIOS_Computer_Name = ntlm_decoded.netbios_computer_name
end
if ntlm_decoded.dns_domain_name and #ntlm_decoded.dns_domain_name > 0 then
output.DNS_Domain_Name = ntlm_decoded.dns_domain_name
end
if ntlm_decoded.fqdn and #ntlm_decoded.fqdn > 0 then
output.DNS_Computer_Name = ntlm_decoded.fqdn
end
if ntlm_decoded.dns_forest_name and #ntlm_decoded.dns_forest_name > 0 then
output.DNS_Tree_Name = ntlm_decoded.dns_forest_name
end
if ntlm_decoded.os_major_version then
output.Product_Version = ("%d.%d.%d"):format(
ntlm_decoded.os_major_version,
ntlm_decoded.os_minor_version,
ntlm_decoded.os_build)
end
return output
end
end
|
