1 files changed, 162 insertions, 0 deletions
diff --git a/scripts/snmp-processes.nse b/scripts/snmp-processes.nse
new file mode 100644
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--- /dev/null
+++ b/scripts/snmp-processes.nse
@@ -0,0 +1,162 @@
+local nmap = require "nmap"
+local shortport = require "shortport"
+local snmp = require "snmp"
+local stdnse = require "stdnse"
+
+description = [[
+Attempts to enumerate running processes through SNMP.
+]]
+
+---
+-- @usage
+-- nmap -sU -p 161 --script=snmp-processes <target>
+-- @output
+-- | snmp-processes:
+-- |   1:
+-- |     Name: System Idle Process
+-- |   4:
+-- |     Name: System
+-- |   256:
+-- |     Name: smss.exe
+-- |     Path: \SystemRoot\System32\
+-- |   308:
+-- |     Name: csrss.exe
+-- |     Path: C:\WINDOWS\system32\
+-- |     Params: ObjectDirectory=\Windows SharedSection=1024,3072,512 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserS
+-- |   332:
+-- |     Name: winlogon.exe
+-- |   380:
+-- |     Name: services.exe
+-- |     Path: C:\WINDOWS\system32\
+-- |   392:
+-- |     Name: lsass.exe
+-- |_    Path: C:\WINDOWS\system32\
+--
+-- @xmloutput
+-- <table key="1">
+--   <elem key="Name">System Idle Process</elem>
+-- </table>
+-- <table key="4">
+--   <elem key="Name">System</elem>
+-- </table>
+-- <table key="256">
+--   <elem key="Name">smss.exe</elem>
+--   <elem key="Path">\SystemRoot\System32\</elem>
+-- </table>
+-- <table key="308">
+--   <elem key="Name">csrss.exe</elem>
+--   <elem key="Path">C:\WINDOWS\system32\</elem>
+--   <elem key="Params">ObjectDirectory=\Windows SharedSection=1024,3072,512 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserS</elem>
+-- </table>
+-- <table key="332">
+--   <elem key="Name">winlogon.exe</elem>
+-- </table>
+-- <table key="380">
+--   <elem key="Name">services.exe</elem>
+--   <elem key="Path">C:\WINDOWS\system32\</elem>
+-- </table>
+-- <table key="392">
+--   <elem key="Name">lsass.exe</elem>
+--   <elem key="Path">C:\WINDOWS\system32\</elem>
+-- </table>
+
+author = "Patrik Karlsson"
+license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
+categories = {"default", "discovery", "safe"}
+dependencies = {"snmp-brute"}
+
+-- Version 0.4
+-- Created 01/15/2010 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
+-- Revised 01/19/2010 - v0.2 - fixed loop that would occur if a mib did not exist
+-- Revised 01/19/2010 - v0.3 - removed debugging output and renamed file
+-- Revised 04/11/2010 - v0.4 - moved snmp_walk to snmp library <patrik@cqure.net>
+
+
+portrule = shortport.port_or_service(161, "snmp", "udp", {"open", "open|filtered"})
+
+--- Gets a value for the specified oid
+--
+-- @param tbl table containing <code>oid</code> and <code>value</code>
+-- @param oid string containing the object id for which the value should be extracted
+-- @return value of relevant type or nil if oid was not found
+function get_value_from_table( tbl, oid )
+
+  for _, v in ipairs( tbl ) do
+    if v.oid == oid then
+      return v.value
+    end
+  end
+
+  return nil
+end
+
+--- Processes the table and creates the script output
+--
+-- @param tbl table containing <code>oid</code> and <code>value</code>
+-- @return table suitable for <code>stdnse.format_output</code>
+function process_answer( tbl )
+
+  local swrun_name = "1.3.6.1.2.1.25.4.2.1.2"
+  local swrun_pid = "1.3.6.1.2.1.25.4.2.1.1"
+  local swrun_path = "1.3.6.1.2.1.25.4.2.1.4"
+  local swrun_params = "1.3.6.1.2.1.25.4.2.1.5"
+  local new_tbl = stdnse.output_table()
+
+  for _, v in ipairs( tbl ) do
+
+    if ( v.oid:match("^" .. swrun_pid) ) then
+      local item = stdnse.output_table()
+      local objid = v.oid:gsub( "^" .. swrun_pid, swrun_name)
+      local value = get_value_from_table( tbl, objid )
+
+      if value then
+        item["Name"] = value
+      end
+
+      objid = v.oid:gsub( "^" .. swrun_pid, swrun_path)
+      value =  get_value_from_table( tbl, objid )
+
+      if value and value:len() > 0 then
+        item["Path"] = value
+      end
+
+      objid = v.oid:gsub( "^" .. swrun_pid, swrun_params)
+      value = get_value_from_table( tbl, objid )
+
+      if value and value:len() > 0 then
+        item["Params"] = value
+      end
+
+      -- key (PID) must be a string for output to work.
+      new_tbl[tostring(v.value)] = item
+    end
+
+  end
+
+  return new_tbl
+
+end
+
+
+action = function(host, port)
+
+  local data, snmpoid = nil, "1.3.6.1.2.1.25.4.2"
+  local shares = {}
+  local status
+
+  local snmpHelper = snmp.Helper:new(host, port)
+  snmpHelper:connect()
+
+  status, shares = snmpHelper:walk( snmpoid )
+
+  if (not(status)) or ( shares == nil ) or ( #shares == 0 ) then
+    return
+  end
+
+  shares = process_answer( shares )
+
+  nmap.set_port_state(host, port, "open")
+
+  return shares
+end
+