mirror of
https://github.com/nmap/nmap.git
synced 2025-12-09 06:01:28 +00:00
c7eb8011d9
of scripts chosen from when using -sC (but it's still just another category and so can be chosen with --script like any other). On top of updating the docs with information about this new category, I've also updated sections to emphasize that the "default" category, -sC and -A are considered intrusive and should not be run against target networks without permission. The new list is very similar to the previous "safe,intrusive" list: Added: finger, ircServerInfo, RealVNC_auth_bypass Removed: HTTPpasswd Here are the 21 scripts in this new category: anonFTP dns-test-open-recursion finger ftpbounce HTTPAuth HTTP_open_proxy ircServerInfo MSSQLm MySQLinfo nbstat RealVNC_auth_bypass robots rpcinfo showHTMLTitle showOwner SMTPcommands SNMPsysdesr SSHv1-support SSLv2-support UPnP-info zoneTrans
140 lines
3.3 KiB
Lua
140 lines
3.3 KiB
Lua
-- SNMP system detection script
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-- rev 0.4 (6-11-2007)
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id = "SNMPv1"
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description = "Attempts to extract system information from SNMP service"
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author = "Thomas Buchanan <tbuchanan@thecompassgrp.net>"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"default", "discovery", "safe"}
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require "shortport"
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portrule = shortport.portnumber(161, "udp", {"open", "open|filtered"})
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action = function(host, port)
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-- create the socket used for our connection
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local socket = nmap.new_socket()
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-- set a reasonable timeout value
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socket:set_timeout(5000)
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-- do some exception handling / cleanup
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local catch = function()
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socket:close()
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end
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local try = nmap.new_try(catch)
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-- connect to the potential SNMP system
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try(socket:connect(host.ip, port.number, "udp"))
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local payload
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-- build a SNMP v1 packet
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-- copied from packet capture of snmpget exchange
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-- get value: 1.3.6.1.2.1.1.1.0 (SNMPv2-MIB::sysDescr.0)
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payload = "\048\039\002\001\000\004\006" .. "public" -- community string = public
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payload = payload .. "\160\026\002\002\111\012\002\001"
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payload = payload .. "\000\002\001\000\048\014\048\012"
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payload = payload .. "\006\008\043\006\001\002\001\001"
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payload = payload .. "\001\000\005\000"
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try(socket:send(payload))
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local status
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local response
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-- read in any response we might get
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status, response = socket:receive_bytes(1)
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if (not status) then
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return
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end
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if (response == "TIMEOUT") then
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return
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end
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-- since we got something back, the port is definitely open
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nmap.set_port_state(host, port, "open")
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local result
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result = string.match(response, "\001\001%z\004.(.*)")
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-- build a SNMP v1 packet
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-- copied from packet capture of snmpget exchange
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-- get value: 1.3.6.1.2.1.1.3.0 (SNMPv2-MIB::sysUpTime.0)
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payload = "\048\039\002\001\000\004\006" .. "public" -- community string = public
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payload = payload .. "\160\026\002\002\101\040\002\001"
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payload = payload .. "\000\002\001\000\048\014\048\012"
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payload = payload .. "\006\008\043\006\001\002\001\001"
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payload = payload .. "\003\000\005\000"
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try(socket:send(payload))
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-- read in any response we might get
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status, response = socket:receive_bytes(1)
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if (not status) then
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return result
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end
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if (response == "TIMEOUT") then
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return result
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end
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try(socket:close())
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local start, stop = response:find("\006\001\002\001\001\003\000")
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if start == nil then
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return result
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end
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local uplen,uptime,s1,s2,s3,s4
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uplen = response:byte(stop + 2)
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s1,s2,s3,s4 = response:byte(stop + 3, stop + 3 + uplen)
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if uplen == 4 then
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uptime = s1*(2^24) + s2*(2^16) + s3*(2^8) + s4
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elseif uplen == 3 then
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uptime = s1*(2^16) + s2*(2^8) + s3
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elseif uplen == 2 then
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uptime = s1*(2^8) + s2
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elseif uplen == 1 then
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uptime = s1
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else
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return result
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end
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local days, hours, minutes, seconds, htime, mtime, stime
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days = math.floor(uptime / 8640000)
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htime = math.fmod(uptime, 8640000)
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hours = math.floor(htime / 360000)
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mtime = math.fmod(htime, 360000)
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minutes = math.floor(mtime / 6000)
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stime = math.fmod(mtime, 6000)
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seconds = stime / 100
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local dayLabel
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if days == 1 then
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dayLabel = " day, "
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else
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dayLabel = " days, "
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end
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result = result .. "\n System uptime: " .. days .. dayLabel .. hours .. ":" .. minutes .. ":" .. seconds
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result = result .. " (" .. tostring(uptime) .. " timeticks)"
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return result
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end
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