Nmap citrix-brute-xml NSE Script
This page contains detailed information about how to use the citrix-brute-xml NSE script. For list of all NSE scripts, visit the Nmap NSE Library.
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Script Overview
Script source code: https://github.com/nmap/nmap/tree/master/scripts/citrix-brute-xml.nse
Script categories: intrusive, brute
Target service / protocol: http, https, tcp
Target network port(s): 8080, 80, 443
List of CVEs: -
Script Description
The citrix-brute-xml.nse script attempts to guess valid credentials for the Citrix PN Web Agent XML Service. The XML service authenticates against the local Windows server or the Active Directory.
This script makes no attempt of preventing account lockout. If the password list contains more passwords than the lockout-threshold accounts will be locked.
Citrix-brute-xml NSE Script Arguments
This is a full list of arguments supported by the citrix-brute-xml.nse script:
smbdomainThe domain to log in with. If you aren't in a domain environment, then anything will (should?) be accepted by the server.
smbhashA password hash to use when logging in. This is given as a single hex string (32 characters) or a pair of hex strings (both 32 characters, optionally separated by a single character). These hashes are the LanMan or NTLM hash of the user's password, and are stored on disk or in memory. They can be retrieved from memory using the fgdump or pwdump tools.
smbnoguestUse to disable usage of the 'guest' account.
smbpasswordThe password to connect with. Be cautious with this, since some servers will lock accounts if the incorrect password is given. Although it's rare that the Administrator account can be locked out, in the off chance that it can, you could get yourself in trouble. To use a blank password, leave this parameter off altogether.
smbtypeThe type of SMB authentication to use. These are the possible options:
v1
: Sends LMv1 and NTLMv1.LMv1
: Sends LMv1 only.NTLMv1
: Sends NTLMv1 only (default).v2
: Sends LMv2 and NTLMv2.LMv2
: Sends LMv2 only.NTLMv2
: Doesn't exist; the protocol doesn't support NTLMv2 alone. The default,NTLMv1
, is a pretty decent compromise between security and compatibility. If you are paranoid, you might want to usev2
orlmv2
for this. (Actually, if you're paranoid, you should be avoiding this protocol altogether!). If you're using an extremely old system, you might need to set this tov1
orlm
, which are less secure but more compatible. For information, seesmbauth.lua
.
The SMB username to log in with. The forms "DOMAIN\username" and "username@DOMAIN" are not understood. To set a domain, use the smbdomain
argument.
Debug level at which default callbacks will print detailed parsing info. Default: 3
http.host
The value to use in the Host header of all requests unless otherwise set. By default, the Host header uses the output of stdnse.get_hostname()
.
Limit the received body to specific number of bytes. An oversized body results in an error unless script argument http.truncated-ok
or request option truncated_ok
is set to true. The default is 2097152 (2MB). Use value -1 to disable the limit altogether. This argument can be overridden case-by-case with request option max_body_size
.
The maximum memory size (in bytes) of the cache.
http.max-pipeline
If set, it represents the number of outstanding HTTP requests that should be sent together in a single burst. Defaults to http.pipeline
(if set), or to what function get_pipeline_limit
returns.
If set, it represents the number of HTTP requests that'll be sent on one connection. This can be set low to make debugging easier, or it can be set high to test how a server reacts (its chosen max is ignored).
http.truncated-ok
Do not treat oversized body as error. (Use response object flag truncated
to check if the returned body has been truncated.) This argument can be overridden case-by-case with request option truncated_ok
.
The value of the User-Agent header field sent with requests. By default it is "Mozilla/5.0 (compatible; Nmap Scripting Engine; https://nmap.org/book/nse.html)"
. A value of the empty string disables sending the User-Agent header field.
The filename of an alternate password database. Default: nselib/data/passwords.lst
unpwdb.passlimit
The maximum number of passwords passwords
will return (default unlimited).
The maximum amount of time that any iterator will run before stopping. The value is in seconds by default and you can follow it with ms
, s
, m
, or h
for milliseconds, seconds, minutes, or hours. For example, unpwdb.timelimit=30m
or unpwdb.timelimit=.5h
for 30 minutes. The default depends on the timing template level (see the module description). Use the value 0
to disable the time limit.
The maximum number of usernames usernames
will return (default unlimited).
The filename of an alternate username database. Default: nselib/data/usernames.lst
- - -
To use these script arguments, add them to the Nmap command line using the --script-args arg1=value,[arg2=value,..]
syntax. For example:
nmap --script=citrix-brute-xml --script-args smbdomain=value,smbhash=value <target>
Citrix-brute-xml NSE Script Example Usage
Here's an example of how to use the citrix-brute-xml.nse script:
nmap --script=citrix-brute-xml --script-args=userdb=<userdb>,passdb=<passdb>,ntdomain=<domain> -p 80,443,8080 <host>
Citrix-brute-xml NSE Script Example Output
Here's a sample output from the citrix-brute-xml.nse script:
PORT STATE SERVICE REASON
8080/tcp open http-proxy syn-ack
| citrix-brute-xml:
| Joe:password => Must change password at next logon
| Luke:summer => Login was successful
|_ Jane:secret => Account is disabled
Citrix-brute-xml NSE Script Example XML Output
There is no sample XML output for this module. However, by providing the -oX <file>
option, Nmap will produce a XML output and save it in the file.xml
file.
Author
- Patrik Karlsson
References
- https://nmap.org/nsedoc/scripts/citrix-brute-xml.html
- https://github.com/nmap/nmap/tree/master/scripts/citrix-brute-xml.nse
See Also
Related NSE scripts to the citrix-brute-xml.nse script:
Visit Nmap NSE Library for more scripts.
The citrix-brute-xml.nse script may fail with the following error messages. Check for the possible causes by using the code snippets highlighted below found in the script source code. This can often times help in identifying the root cause of the problem.
FAILED: No domain specified (use ntdomain argument)
Here is a relevant code snippet related to the "FAILED: No domain specified (use ntdomain argument)" error message:
112: local args = nmap.registry.args
113: local ntdomain = args.ntdomain
114: local valid_accounts = {}
115:
116: if not ntdomain then
117: return "FAILED: No domain specified (use ntdomain argument)"
118: end
119:
120: status, nextUser = unpwdb.usernames()
121:
122: if not status then
Trying %s/%s => Login Failed, Reason: %s
Here is a relevant code snippet related to the "Trying %s/%s => Login Failed, Reason: %s" error message:
148: stdnse.debug1("Trying %s/%s => Login Correct, Info: %s", username, password, account.message)
149: else
150: stdnse.debug1("Trying %s/%s => Login Correct", username, password)
151: end
152: else
153: stdnse.debug1("Trying %s/%s => Login Failed, Reason: %s", username, password, account.message)
154: end
155: password = nextPass()
156: end
157:
158: nextPass("reset")
Version
This page has been created based on Nmap version 7.92.
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