smb-enum-processes
NSE detection rule by Ron Bowes · Same as Nmap--See https://nmap.org/book/man-legal.html
Pulls a list of processes from the remote server over SMB. This will determine
all running processes, their process IDs, and their parent processes. It is done
by querying the remote registry service, which is disabled by default on Vista;
on all other Windows versions, it requires Administrator privileges.
Since this requires administrator privileges, it isn't especially useful for a
penetration tester, since they can effectively do the same thing with metasploit
or other tools. It does, however, provide for a quick way to get process lists
for a bunch of systems at the same time.
WARNING: I have experienced crashes in <code>regsvc.exe</code> while making registry calls
against a fully patched Windows 2000 system; I've fixed the issue that caused
it, but there's no guarantee that it (or a similar vulnerability in the same code) won't
show up again. Since the process automatically restarts, it doesn't negatively
impact the system, besides showing a message box to the user.
local msrpcperformance = require "msrpcperformance"
local nmap = require "nmap"
local smb = require "smb"
local stdnse = require "stdnse"
local string = require "string"
local table = require "table"
description = [[
Pulls a list of processes from the remote server over SMB. This will determine
all running processes, their process IDs, and their parent processes. It is done
by querying the remote registry service, which is disabled by default on Vista;
on all other Windows versions, it requires Administrator privileges.
Since this requires administrator privileges, it isn't especially useful for a
penetration tester, since they can effectively do the same thing with metasploit
or other tools. It does, however, provide for a quick way to get process lists
for a bunch of systems at the same time.
WARNING: I have experienced crashes in <code>regsvc.exe</code> while making registry calls
against a fully patched Windows 2000 system; I've fixed the issue that caused
it, but there's no guarantee that it (or a similar vulnerability in the same code) won't
show up again. Since the process automatically restarts, it doesn't negatively
impact the system, besides showing a message box to the user.
]]
---
-- @usage
-- nmap --script smb-enum-processes.nse -p445 <host>
-- sudo nmap -sU -sS --script smb-enum-processes.nse -p U:137,T:139 <host>
--
---
-- @output
-- Host script results:
-- | smb-enum-processes:
-- |_ |_ Idle, System, smss, csrss, winlogon, services, logon.scr, lsass, spoolsv, msdtc, VMwareService, svchost, alg, explorer, VMwareTray, VMwareUser, wmiprvse
--
-- --
-- Host script results:
-- | smb-enum-processes:
-- | `+-Idle
-- | | `-System
-- | | `-smss
-- | | `+-csrss
-- | | `-winlogon
-- | | `+-services
-- | | | `+-spoolsv
-- | | | +-msdtc
-- | | | +-VMwareService
-- | | | +-svchost
-- | | | `-alg
-- | | +-logon.scr
-- | | `-lsass
-- | +-explorer
-- | | `+-VMwareTray
-- | | `-VMwareUser
-- |_ `-wmiprvse
--
-- --
-- Host script results:
-- | smb-enum-processes:
-- | PID PPID Priority Threads Handles
-- | ----- ----- -------- ------- -------
-- | 0 0 0 1 0 `+-Idle
-- | 4 0 8 49 395 | `-System
-- | 252 4 11 3 19 | `-smss
-- | 300 252 13 10 338 | `+-csrss
-- | 324 252 13 18 513 | `-winlogon
-- | 372 324 9 16 272 | `+-services
-- | 872 372 8 12 121 | | `+-spoolsv
-- | 896 372 8 13 151 | | +-msdtc
-- | 1172 372 13 3 53 | | +-VMwareService
-- | 1336 372 8 20 158 | | +-svchost
-- | 1476 372 8 6 90 | | `-alg
-- | 376 324 4 1 22 | +-logon.scr
-- | 384 324 9 23 394 | `-lsass
-- | 1720 1684 8 9 259 +-explorer
-- | 1796 1720 8 1 42 | `+-VMwareTray
-- | 1808 1720 8 1 44 | `-VMwareUser
-- |_ 1992 580 8 7 179 `-wmiprvse
-----------------------------------------------------------------------
author = "Ron Bowes"
copyright = "Ron Bowes"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"discovery", "intrusive"}
dependencies = {"smb-brute"}
function psl_mode (list, i)
local mode
-- Decide connector for process.
if #list == 1 then
mode = "only"
elseif i == 1 then
mode = "first"
elseif i < #list then
mode = "middle"
else
mode = "last"
end
return mode
end
function psl_print (psl, lvl)
-- Print out table header.
local result = {}
if lvl == 2 then
result[#result+1] = " PID PPID Priority Threads Handles\n"
result[#result+1] = "----- ----- -------- ------- -------\n"
end
-- Find how many root processes there are.
local roots = {}
for i, ps in pairs(psl) do
if psl[ps.ppid] == nil or ps.ppid == ps.pid then
table.insert(roots, i)
end
end
table.sort(roots)
-- Create vertical sibling bars.
local bars = {}
if #roots ~= 1 then
table.insert(bars, 2)
end
-- Print out each root of the tree.
for i, root in ipairs(roots) do
local mode = psl_mode(roots, i)
psl_tree(psl, root, 0, bars, mode, lvl, result)
end
return table.concat(result)
end
function psl_tree (psl, pid, column, bars, mode, lvl, result)
local ps = psl[pid]
-- Delete vertical sibling link.
if mode == "last" then
table.remove(bars)
end
-- Print information table.
local info = ""
if lvl == 2 then
info = string.format("% 5d % 5d % 8d % 7d % 7d ", ps.pid, ps.ppid, ps.prio, ps.thrd, ps.hndl)
end
-- Print vertical sibling bars.
local prefix = ""
for i=1, #bars do
prefix = prefix .. string.rep(" ", bars[i] - 1) .. "|"
end
-- Strings used to separate processes from one another.
local separators = {
first = "`+-";
last = " `-";
middle = " +-";
only = "`-";
}
-- Format process itself.
result[#result+1] = "\n" .. info .. prefix .. separators[mode] .. ps.name
-- Find children of the process.
local children = {}
for child_pid, child in pairs(psl) do
if child_pid ~= pid and child.ppid == pid then
table.insert(children, child_pid)
end
end
table.sort(children)
-- Add vertical sibling link between children.
column = column + #separators[mode]
if #children > 1 then
table.insert(bars, column + 2)
end
-- Format process's children.
for i, pid in ipairs(children) do
local mode = psl_mode(children, i)
psl_tree(psl, pid, column, bars, mode, lvl, result)
end
return result
end
hostrule = function(host)
return smb.get_port(host) ~= nil
end
action = function(host)
-- Get the process list
local status, result = msrpcperformance.get_performance_data(host, "230")
if status == false then
return stdnse.format_output(false, result)
end
-- Get the process table
local process = result["Process"]
-- Put the processes into an array, and sort them by pid.
local names = {}
for i, v in pairs(process) do
if i ~= "_Total" then
names[#names + 1] = i
end
end
table.sort(names, function (a, b) return process[a]["ID Process"] < process[b]["ID Process"] end)
-- Put the processes into an array indexed by pid and with a value equal
-- to the name (so we can look it up easily when we need to).
local process_id = {}
for i, v in pairs(process) do
process_id[v["ID Process"]] = i
end
-- Fill the process list table.
--
-- Used fields:
-- Creating Process ID
-- Handle Count
-- ID Process
-- Priority Base
-- Thread Count
--
-- Unused fields:
-- % Privileged Time
-- % Processor Time
-- % User Time
-- Elapsed Time
-- IO Data Bytes/sec
-- IO Data Operations/sec
-- IO Other Bytes/sec
-- IO Other Operations/sec
-- IO Read Bytes/sec
-- IO Read Operations/sec
-- IO Write Bytes/sec
-- IO Write Operations/sec
-- Page Faults/sec
-- Page File Bytes
-- Page File Bytes Peak
-- Pool Nonpaged Bytes
-- Pool Paged Bytes
-- Private Bytes
-- Virtual Bytes
-- Virtual Bytes Peak
-- Working Set
-- Working Set Peak
local psl = {}
for i, name in ipairs(names) do
if name ~= "_Total" then
psl[process[name]["ID Process"]] = {
name = name;
pid = process[name]["ID Process"];
ppid = process[name]["Creating Process ID"];
prio = process[name]["Priority Base"];
thrd = process[name]["Thread Count"];
hndl = process[name]["Handle Count"];
}
end
end
-- Produce final output.
local response
if nmap.verbosity() == 0 then
response = "|_ " .. table.concat(names, ", ")
else
response = "\n" .. psl_print(psl, nmap.verbosity())
end
return response
end