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Proofread and format the smb-* scripts. This was mostly done by Ron already.

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david
2008-11-03 21:36:07 +00:00
parent 5e6e7151e9
commit e01984b2f5
8 changed files with 250 additions and 265 deletions
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59
scripts/smb-security-mode.nse
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@@ -4,30 +4,28 @@ Returns information about the SMB security level determined by SMB.
Here is how to interpret the output:
User-level security: Each user has a separate username/password that is used
User-level authentication: Each user has a separate username/password that is used
to log into the system. This is the default setup of pretty much everything
these days.
Share-level security: The anonymous account should be used to log in, then
Share-level authentication: The anonymous account should be used to log in, then
the password is given (in plaintext) when a share is accessed. All users who
have access to the share use this password. This was the original way of doing
things, but isn't commonly seen, now. If a server uses share-level security,
it is vulnerable to sniffing.
Challenge/response passwords: If enabled, the server can accept any type of
Challenge/response passwords supported: If enabled, the server can accept any type of
password:
* Plaintext
* LM and NTLM
* LMv2 and NTLMv2
If it isn't set, the server can only accept plaintext passwords. Most servers
are configured to use challenge/response these days. If a server is configured
to accept plaintext passwords, it is vulnerable to sniffing. LM and NTLM are
fairly secure, although there are some bruteforce attacks against them.
fairly secure, although there are some brute-force attacks against them.
Message signing: If required, all messages between the client and server must
sign be signed by a shared key, derived from the password and the server
be signed by a shared key, derived from the password and the server
challenge. If supported and not required, message signing is negotiated between
clients and servers and used if both support and request it. By default,
Windows clients don't sign messages, so if message signing isn't required by
@@ -36,11 +34,10 @@ man-in-the-middle attack, an attacker can negotiate no message signing. If
message signing isn't required, the server is vulnerable to man-in-the-middle
attacks.
See nselib/smb.lua for more information on the protocol itself.
This script will allow you to use smb arguments (username/password), but it probably
won't ever require them.
This script will allow you to use the <code>smb*</code> script arguments (to
set the username and password, etc.), but it probably won't ever require them.
]]
---
--@usage
-- nmap --script smb-security-mode.nse -p445 127.0.0.1
@@ -51,35 +48,33 @@ won't ever require them.
-- | SMB Security: Challenge/response passwords supported
-- |_ SMB Security: Message signing supported
--
--@args smbusername The SMB username to log in with. The form DOMAIN\username and username@DOMAIN
-- are NOT understood. To set a domain, use the smbdomain argument.
--@args smbusername The SMB username to log in with. The forms "DOMAIN\username" and "username@DOMAIN"
-- are not understood. To set a domain, use the <code>smbdomain</code> argument.
--@args smbdomain The domain to log in with. If you aren't in a domained environment, then anything
-- will (should?) be accepted by the server.
--@args smbpassword The password to connect with. Be cautious with this, since some servers will lock
-- accounts if the incorrect password is given (although it's rare for the
-- 'administrator' account to be lockoutable, in the off chance that it is, you could
-- get yourself in trouble).
-- 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.
--@args smbhash A password hash to use when logging in. This is given as a single hex string (32
-- characters) or a pair of hex strings (2 x 32 characters, optionally separated by a
-- single character). These hashes are the Lanman or NTLM hash of the user's password,
-- and are stored by systems, on the harddrive or memory. They can be retrived from memory
-- 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.
--@args smbguest If this is set to 'true' or '1', a 'guest' login will be attempted if the normal one
--@args smbguest If this is set to <code>true</code> or <code>1</code>, a guest login will be attempted if the normal one
-- fails. This should be harmless, but I thought I would disable it by default anyway
-- because I'm not entirely sure of any possible consequences.
--@args smbtype The type of SMB authentication to use. By default, NTLMv1 is used, which is a pretty
--@args smbtype The type of SMB authentication to use. These are the possible options:
-- * <code>v1</code>: Sends LMv1 and NTLMv1.
-- * <code>LMv1</code>: Sends LMv1 only.
-- * <code>NTLMv1</code>: Sends NTLMv1 only (default).
-- * <code>v2</code>: Sends LMv2 and NTLMv2.
-- * <code>LMv2</code>: Sends LMv2 only.
-- The default, <code>NTLMv1</code>, is a pretty
-- decent compromise between security and compatibility. If you are paranoid, you might
-- want to use 'v2' or 'lmv2' for this (actually, if you're paranoid, you should be
-- want to use <code>v2</code> or <code>lmv2</code> for this. (Actually, if you're paranoid, you should be
-- avoiding this protocol altogether :P). If you're using an extremely old system, you
-- might need to set this to 'v1' or 'lm', which are less secure but more compatible.
--
-- If you want finer grained control, 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
--
-- might need to set this to <code>v1</code> or <code>lm</code>, which are less secure but more compatible.
-----------------------------------------------------------------------
author = "Ron Bowes"
@@ -88,7 +83,7 @@ categories = {"discovery", "safe"}
require 'smb'
--- Check whether or not this script should be run.
-- Check whether or not this script should be run.
hostrule = function(host)
local port = smb.get_port(host)