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Better error reporting for smb-mbenum

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Check for error 71 (0x47), which means the server is simply not a master
or backup browser and will not respond.

Also teardown the SMB session as far as it has been established, to be
nice.
This commit is contained in:
dmiller 2014-02-19 22:35:34 +00:00
parent b3b5f8c377
commit b8873f42cd
1 changed files with 39 additions and 25 deletions
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64
scripts/smb-mbenum.nse
View file

@ -153,39 +153,53 @@ action = function(host, port)
return "\n The argument smb-mbenum.format contained an invalid value."
end
local errstr = nil
status, err = smb.negotiate_protocol(smbstate, {})
if ( not(status) ) then
log("ERROR: smb.negotiate_protocol failed")
return "\n ERROR: Failed to connect to browser service"
errstr = "\n ERROR: Failed to connect to browser service: " .. err
else
status, err = smb.start_session(smbstate, {})
if ( not(status) ) then
log("ERROR: smb.start_session failed")
errstr = "\n ERROR: Failed to connect to browser service: " .. err
else
status, err = smb.tree_connect(smbstate, path, {})
if ( not(status) ) then
log("ERROR: smb.tree_connect failed")
errstr = "\n ERROR: Failed to connect to browser service: " .. err
else
status, entries = msrpc.rap_netserverenum2(smbstate, domain, filter, detail_level)
if ( not(status) ) then
log("ERROR: msrpc.rap_netserverenum2 failed")
-- 71 == 0x00000047, ERROR_REQ_NOT_ACCEP
-- http://msdn.microsoft.com/en-us/library/cc224501.aspx
if entries:match("= 71$") then
errstr = "Not a master or backup browser"
else
errstr = "\n ERROR: " .. entries
end
end
end
status, err = smb.tree_disconnect(smbstate)
if ( not(status) ) then log("ERROR: smb.tree_disconnect failed") end
end
status, err = smb.logoff(smbstate)
if ( not(status) ) then log("ERROR: smb.logoff failed") end
end
status, err = smb.start_session(smbstate, {})
if ( not(status) ) then
log("ERROR: smb.negotiate_protocol failed")
return "\n ERROR: Failed to connect to browser service"
end
status, err = smb.tree_connect(smbstate, path, {})
if ( not(status) ) then
log("ERROR: smb.negotiate_protocol failed")
return "\n ERROR: Failed to connect to browser service"
end
status, entries = msrpc.rap_netserverenum2(smbstate, domain, filter, detail_level)
if ( not(status) ) then
log("ERROR: msrpc.call_lanmanapi failed")
return "\n ERROR: " .. entries
end
status, err = smb.tree_disconnect(smbstate)
if ( not(status) ) then log("ERROR: smb.tree_disconnect failed") end
status, err = smb.logoff(smbstate)
if ( not(status) ) then log("ERROR: smb.logoff failed") end
status, err = smb.stop(smbstate)
if ( not(status) ) then log("ERROR: smb.stop failed") end
if errstr then
return errstr
end
local results, output = {}, {}
for k, _ in pairs(ServerTypes) do
for _, server in ipairs(entries) do