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o Improved rpcinfo.nse to better sort and display available RPC

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services. [Sven Klemm]
This commit is contained in:
fyodor
2008-01-06 17:12:09 +00:00
parent 165e79a95d
commit 8e9ca576d2
2 changed files with 39 additions and 10 deletions
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4
CHANGELOG
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@@ -1,5 +1,9 @@
# Nmap Changelog ($Id$); -*-text-*-
o Improved rpcinfo.nse to better sort and display available RPC
services. [Sven Klemm]
4.52
o Fixed Nmap Winpcap installer to use CurrentVersion registry key on

45
scripts/rpcinfo.nse
View File

@@ -16,7 +16,7 @@ local fillrpc = function()
local path = nmap.fetchfile("nmap-rpc")
if path == nil then
return false
return false, "Can't read from RPC file!"
end
local file = io.open(path, "r")
@@ -52,16 +52,13 @@ action = function(host, port)
local try, catch
local transaction_id = "nmap"
local socket = nmap.new_socket()
local result = ""
if not fillrpc() then
stdnse.print_debug("rpcinfo: Can't read from RPC file!")
return
end
local result = " \n"
catch = function() socket:close() end
try = nmap.new_try( catch )
try( fillrpc() )
local ntohl = function( s )
return bit.lshift(s:byte(1),24) + bit.lshift(s:byte(2),16) +
bit.lshift(s:byte(3),8) + s:byte(4)
@@ -83,6 +80,7 @@ action = function(host, port)
status, answer_part = socket:receive_bytes( 1 )
if status then answer = answer .. answer_part end
end
socket:close()
local fragment_length = answer:byte(4) + answer:byte(3) * 256 + answer:byte(2) * 65536
if answer:sub(5,8) == transaction_id and answer:byte(12) == 1 and answer:byte(16) == 0 and answer:byte(28) == 0 then
@@ -97,9 +95,9 @@ action = function(host, port)
answer_part = answer_part:sub( fragment_length + 4 + 1 )
end
while answer:byte(4) == 1 and answer:len() >= 20 do
local dir = { udp = {}, tcp = {}}
local rpc_prog, rpc_vers, rpc_proto, rpc_port
if result:len() > 0 then result = result .. '\n' end
while answer:byte(4) == 1 and answer:len() >= 20 do
rpc_prog = ntohl( answer:sub(5,8))
rpc_vers = ntohl( answer:sub(9,12))
rpc_proto = ntohl( answer:sub(13,16))
@@ -110,7 +108,34 @@ action = function(host, port)
elseif rpc_proto == 17 then
rpc_proto = "udp"
end
result = result .. string.format("%s(%d) %d/%s",rpc_numbers[rpc_prog] or rpc_prog,rpc_vers,rpc_port,rpc_proto)
if not dir[rpc_proto][rpc_port] then dir[rpc_proto][rpc_port] = {} end
if not dir[rpc_proto][rpc_port][rpc_prog] then dir[rpc_proto][rpc_port][rpc_prog] = {} end
table.insert( dir[rpc_proto][rpc_port][rpc_prog], rpc_vers )
end
local format_version = function( version_table )
if #version_table == 1 then return version_table[1] end
table.sort( version_table )
for i=2,#version_table do
if version_table[i-1] ~= version_table[i] - 1 then
return table.concat( version_table, ',' )
end
end
return string.format('%d-%d',version_table[1],version_table[#version_table])
end
for rpc_proto, o in pairs(dir) do
local ports = {}
for rpc_port, i in pairs(o) do table.insert(ports, rpc_port) end
table.sort(ports)
for i, rpc_port in ipairs(ports) do
i = o[rpc_port]
for rpc_prog, versions in pairs(o[rpc_port]) do
versions = format_version( versions )
local name = rpc_numbers[rpc_prog] or ''
result = result .. string.format('%d %-5s %5d/%s %s\n',rpc_prog,versions,rpc_port,rpc_proto,name)
end
end
end
end