local bit = require 'bit' local smb = require 'smb' local stdnse = require 'stdnse' local tab = require 'tab' local table = require "table" local openssl= stdnse.silent_require 'openssl' description = [[ Attempts to retrieve useful information about files shared on SMB volumes. The output is intended to resemble the output of the UNIX ls command. ]] --- -- @usage -- nmap -p 445 --script smb-ls --script-args 'share=c$,path=\temp' -- -- @output -- Host script results: -- | smb-ls: -- | Directory of \\192.168.56.101\c$\ -- | 2007-12-02 00:20:09 0 AUTOEXEC.BAT -- | 2007-12-02 00:20:09 0 CONFIG.SYS -- | 2007-12-02 00:53:39 Documents and Settings -- | 2009-09-08 13:26:10 e5a6b742d36facb19c5192852c43 -- | 2008-12-01 02:06:29 Inetpub -- | 2007-02-18 00:31:38 94720 msizap.exe -- | 2007-12-02 00:55:01 Program Files -- | 2008-12-01 02:05:52 temp -- | 2011-12-16 14:40:18 usr -- | 2007-12-02 00:42:40 WINDOWS -- |_ 2007-12-02 00:22:38 wmpub -- -- @args smb-ls.share the share to connect to -- @args smb-ls.path the path, relative to the share to list the contents from -- @args smb-ls.pattern [optional] the search pattern to execute (default: *) -- @args smb-ls.maxdepth [optional] the maximum depth to recurse into a directory -- @args smb-ls.maxfiles [optional] return only a certain amount of files -- @args smb-ls.checksum [optional] download each file and calculate a SHA1 checksum -- local arg_share = stdnse.get_script_args(SCRIPT_NAME .. '.share') local arg_path = stdnse.get_script_args(SCRIPT_NAME .. '.path') local arg_pattern = stdnse.get_script_args(SCRIPT_NAME .. '.pattern') or '*' local arg_maxfiles = tonumber(stdnse.get_script_args(SCRIPT_NAME .. '.maxfiles')) local arg_maxdepth = tonumber(stdnse.get_script_args(SCRIPT_NAME .. '.maxdepth')) local arg_checksum = stdnse.get_script_args(SCRIPT_NAME .. '.checksum') author = "Patrik Karlsson" license = "Same as Nmap--See http://nmap.org/book/man-legal.html" categories = {"discovery", "safe"} hostrule = function(host) return ( smb.get_port(host) ~= nil and arg_share and arg_path ) end -- checks whether the file entry is a directory local function is_dir(fe) return ( bit.band(fe.attrs, 16) == 16 ) end local function fail(err) return ("\n ERROR: %s"):format(err or "") end action = function(host) local status, smbstate = smb.start_ex(host, true, true, arg_share, nil, nil, nil) if ( not(status) ) then return fail("Failed to authenticate to server (" .. smbstate .. ")") end -- remove leading slash arg_path = ( arg_path:sub(1,2) == '\\' and arg_path:sub(2) or arg_path ) -- fixup checksum argument arg_checksum = ( arg_checksum == 'true' or arg_checksum == '1' ) and true or false local options = { max_depth = arg_maxdepth, max_files = arg_maxfiles } local depth, path, output, dirs = 0, arg_path, {}, {} local file_count, dir_count, total_bytes = 0, 0, 0 repeat local lstab = tab.new((arg_checksum and 4 or 3)) for fe in smb.find_files(smbstate, path .. '\\' .. arg_pattern, options ) do if ( arg_checksum and not(is_dir(fe)) ) then local status, content = smb.file_read(host, arg_share, path .. '\\' .. fe.fname, nil, {file_create_disposition=1}) local sha1 = ( status and stdnse.tohex(openssl.sha1(content)) or "" ) tab.addrow(lstab, fe.created, (is_dir(fe) and '' or fe.eof), fe.fname, sha1) else tab.addrow(lstab, fe.created, (is_dir(fe) and '' or fe.eof), fe.fname) end arg_maxfiles = ( arg_maxfiles and arg_maxfiles - 1 ) if ( arg_maxfiles == 0 ) then break end if ( is_dir(fe) ) then dir_count = dir_count + 1 if ( fe.fname ~= '.' and fe.fname ~= '..' ) then table.insert(dirs, { depth = depth + 1, path = path .. '\\' .. fe.fname } ) end else total_bytes = total_bytes + fe.eof file_count = file_count + 1 end end table.insert(output, { name = ("Directory of %s"):format( '\\\\' .. stdnse.get_hostname(host) .. '\\' .. arg_share .. path), tab.dump(lstab) }) path = nil if ( #dirs ~= 0 ) then local dir = table.remove(dirs, 1) depth = dir.depth if ( not(arg_maxdepth) or ( dir.depth < arg_maxdepth ) ) then path = dir.path table.insert(output, "") end end until(not(path) or arg_maxfiles == 0) smb.stop(smbstate) local summary = { name = "Total Files Listed:", ("%8d File(s)\t%d bytes"):format(file_count, total_bytes), ("%8d Dir(s)"):format(dir_count) } table.insert(output, "") table.insert(output, summary) return stdnse.format_output(true, output) end