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nmap/scripts/imap-capabilities.nse
bmenrigh 7c63ab6bcd Adding the imap-capabilities script and supporting imap library.
The imap-capabilities script is mostly feature-complete but I could
see adding some analysis code to warn users of non-SSL'd IMAP servers
that offer STARTTLS without NOLOGIN.

The imap "library" is really a joke.  It does the minimum required to
support getting capabilities and nothing more.  IMAP requires each
command to use a unique identifier like 000, 001, 002, etc.  Right now
the identifier is hardcoded to a001.  To make a real imap library that
supports logging in, and other IMAP features a state variable will
have to be maintained to change the command uid.  It would be nice to
see the library get updated so that IMAP brute-forcing could be
supported.
2009-06-08 23:21:56 +00:00

43 lines
1.1 KiB
Lua

description = [[
Retrieves IMAP email server capabilities.
IMAP4rev1 capabilities are defined in RFC 3501. The CAPABILITY command
allows a client to ask a server what commands it supports and possibly
any site-specific policy.
]]
---
-- @output
-- 143/tcp open imap
-- |_ imap-capabilities: LOGINDISABLED IDLE IMAP4 LITERAL+ STARTTLS NAMESPACE IMAP4rev1
author = "Brandon Enright <bmenrigh@ucsd.edu>"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"default"}
require 'imap'
require 'shortport'
require 'stdnse'
portrule = shortport.port_or_service({143}, "imap")
action = function(host, port)
local capa, err = imap.capabilities(host, port)
if type(capa) == "table" then
-- Convert the capabilities table into an array of strings.
local capstrings = {}
local cap, args
for cap, args in pairs(capa) do
table.insert(capstrings, cap)
end
return stdnse.strjoin(" ", capstrings)
elseif type(err) == "string" then
stdnse.print_debug(1, "%s: '%s' for %s", filename, err, host.ip)
return
else
return "server doesn't support CAPABILITIES"
end
end