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scripts/ssh-auth-methods.nse
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dmiller
Handle libssh2 errors on connect. Closes #2616. Fixes #1014
04 окт 2024, 21:21
04 окт 2024, 21:21
f1325d7
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local shortport = require "shortport" local stdnse = require "stdnse" local libssh2_util = require "libssh2-utility" local rand = require "rand" description = [[ Returns authentication methods that a SSH server supports. This is in the "intrusive" category because it starts an authentication with a username which may be invalid. The abandoned connection will likely be logged. ]] --- -- @usage -- nmap -p 22 --script ssh-auth-methods --script-args="ssh.user=<username>" <target> -- -- @output -- 22/tcp open ssh syn-ack -- 22/tcp open ssh syn-ack -- | ssh-auth-methods: -- | Supported authentication methods: -- | publickey -- | password -- | Banner: This is a private system. Use of this system constitutes -- |_consent to monitoring. -- -- @xmloutput -- <table key="Supported authentication methods"> -- <elem>publickey</elem> -- <elem>password</elem> -- </table> -- <elem key="Banner">This is a private system. Use of this system constitutes
consent to monitoring.
</elem> author = "Devin Bjelland" license = "Same as Nmap--See https://nmap.org/book/man-legal.html" categories = {"auth", "intrusive"} local username = stdnse.get_script_args("ssh.user") or rand.random_alpha(5) portrule = shortport.ssh function action (host, port) local result = stdnse.output_table() local helper = libssh2_util.SSHConnection:new() local status, err = helper:connect_pcall(host, port) if not status then return "Failed to connect to ssh server: " .. err end local authmethods = helper:list(username) result["Supported authentication methods"] = authmethods result["Banner"] = helper:banner() return result end