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https://github.com/nmap/nmap.git
synced 2025-12-09 06:01:28 +00:00
sql-injection with pipeline support and with two new arguments:
sql-injection.start (to define start crawling url) sql-injection.maxdepth (to set maximum depth to crawling)
This commit is contained in:
joao
@@ -19,6 +19,8 @@ require('stdnse')
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require('strbuf')
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require('listop')
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require('comm')
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require('http')
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require('nsedebug')
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author = "Eddie Bell <ejlbell@gmail.com>"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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@@ -35,52 +37,6 @@ local try = nmap.new_try(catch)
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portrule = shortport.port_or_service({80, 443}, {"http","https"})
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--[[
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Download a page from host:port http server. The url is passed
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straight to the get request, so shouldn't include the domain name
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--]]
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local function get_page(host, port, httpurl)
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local lines = ""
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local status = true
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local response = ""
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local opts = {timeout=10000, recv_before=false}
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-- connect to webserver
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--soc = nmap.new_socket()
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--soc:set_timeout(4000)
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--try(soc:connect(host.ip, port.number))
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httpurl = string.gsub(httpurl, "&", "&")
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--print(filename .. ": " .. httpurl)
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-- request page
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local query = strbuf.new()
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query = query .. "GET " .. httpurl .. " HTTP/1.1"
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query = query .. "Accept: */*"
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query = query .. "Accept-Language: en"
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query = query .. "User-Agent: Mozilla/5.0 (compatible; Nmap Scripting Engine; http://nmap.org/book/nse.html)"
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query = query .. "Host: " .. host.ip .. ":" .. port.number
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--try(soc:send(strbuf.dump(query, '\r\n') .. '\r\n\r\n'))
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soc, response, bopt = comm.tryssl(host, port, strbuf.dump(query, '\r\n') .. '\r\n\r\n' , opts)
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while true do
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status, lines = soc:receive_lines(1)
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if not status then break end
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response = response .. lines
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end
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soc:close()
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return response
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end
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-- Curried function: so we don't have to pass port and host around
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local function get_page_curried(host, port)
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return function(url)
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return get_page(host, port, url)
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end
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end
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--[[
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Pattern match response from a submitted injection query to see
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if it is vulnerable
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@@ -88,46 +44,72 @@ if it is vulnerable
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local function check_injection_response(response)
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if not (string.find(response, 'HTTP/1.1 200 OK')) then
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return false
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end
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response = string.lower(response)
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response = string.lower(response)
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if not (string.find(response, 'http/%d\.%d%s*[25]00')) then
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return false
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end
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return (string.find(response, "invalid query") or
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string.find(response, "sql syntax") or
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string.find(response, "odbc drivers error"))
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return (string.find(response, "invalid query") or
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string.find(response, "sql syntax") or
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string.find(response, "odbc drivers error"))
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end
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--[[
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Parse urls with queries and transform them into potentially
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injectable urls.
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--]]
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Replaces usual queries with malicious querie and return a table with them.
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]]--
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local function enumerate_inject_codes(injectable)
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local utab, k, v, urlstr, response
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local qtab, old_qtab, results
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local function build_injection_vector(urls)
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local utab, k, v, urlstr, response
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local qtab, old_qtab, results
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local all = {}
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results = {}
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utab = url.parse(injectable)
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qtab = url.parse_query(utab.query)
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for _, injectable in ipairs(urls) do
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if type(injectable) == "string" then
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utab = url.parse(injectable)
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qtab = url.parse_query(utab.query)
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for k, v in pairs(qtab) do
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old_qtab = qtab[k];
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qtab[k] = qtab[k] .. "'%20OR%20sqlspider"
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for k, v in pairs(qtab) do
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old_qtab = qtab[k];
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qtab[k] = qtab[k] .. "'%20OR%20sqlspider"
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utab.query = url.build_query(qtab)
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urlstr = url.build(utab)
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response = get_page_from_host(urlstr)
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utab.query = url.build_query(qtab)
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urlstr = url.build(utab)
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table.insert(all, urlstr)
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if (check_injection_response(response)) then
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table.insert(results, urlstr)
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end
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qtab[k] = old_qtab
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utab.query = url.build_query(qtab)
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end
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end
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end
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return all
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end
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qtab[k] = old_qtab
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utab.query = url.build_query(qtab)
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end
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return results
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--[[
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Creates a pipeline table and returns the result
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]]--
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local function inject(host, port, injectable)
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local all = {}
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local pOpts = {}
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pOpts.raw = true
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for k, v in pairs(injectable) do
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all = http.pGet(host, port, v, nil, nil, all)
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end
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return http.pipeline(host, port, all, pOpts)
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end
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--[[
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Checks is received responses matches with usual sql error messages,
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what potentially means that the host is vulnerable to sql injection.
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]]--
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local function check_responses(queries, responses)
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local results = {}
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for k, v in pairs(responses) do
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if (check_injection_response(v)) then
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table.insert(results, queries[k])
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end
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end
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return results
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end
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--[[
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@@ -137,26 +119,26 @@ it in find_links()
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--]]
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local function check_redirects(page)
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local lpage = string.lower(page)
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local _, httpurl = nil
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local lpage = string.lower(page)
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local _, httpurl = nil
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-- meta redirects
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if(string.find(lpage, '<%s*meta%s*http%-equiv%s*=%s*"%s*refresh%s*"')) then
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_, _, httpurl = string.find(lpage, 'content%s*=%s*"%s*%d+%s*;%s*url%s*=%s*([^"]+)"')
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if httpurl then
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page = page .. 'href="' .. httpurl .. '"'
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end
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end
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-- meta redirects
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if(string.find(lpage, '<%s*meta%s*http%-equiv%s*=%s*"%s*refresh%s*"')) then
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_, _, httpurl = string.find(lpage, 'content%s*=%s*"%s*%d+%s*;%s*url%s*=%s*([^"]+)"')
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if httpurl then
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page = page .. 'href="' .. httpurl .. '"'
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end
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end
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-- http redirect
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if(string.find(lpage, 'HTTP/1.1 301 moved permanently')) then
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_, _, httpurl = string.find(lpage, 'location:%s*([^\n]+)')
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if httpurl then
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page = page .. 'href="' .. httpurl .. '"'
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end
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end
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-- http redirect
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if(string.find(lpage, 'HTTP/1.1 301 moved permanently')) then
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_, _, httpurl = string.find(lpage, 'location:%s*([^\n]+)')
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if httpurl then
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page = page .. 'href="' .. httpurl .. '"'
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end
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end
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return page
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return page
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end
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--[[
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@@ -165,11 +147,10 @@ away from current site!
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--]]
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local function is_local_link(url_parts, host)
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if url_parts.authority and
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not(url_parts.authority == host.name) then
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return false
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end
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return true
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if url_parts.authority and not(url_parts.authority == host.name) then
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return false
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end
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return true
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end
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--[[
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@@ -179,69 +160,83 @@ added to the inject list, which is returned.
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--]]
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local function find_links(list, base_path, page, host)
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local httpurl,injectable, url_parts
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local i, s, e
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local httpurl,injectable, url_parts
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local i, s, e
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injectable = {}
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url_parts = {}
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injectable = {}
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url_parts = {}
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for w in string.gmatch(page, 'href%s*=%s*"%s*[^"]+%s*"') do
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s, e = string.find(w, '"')
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httpurl = string.sub(w, s+1, string.len(w)-1)
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i = 1
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for w in string.gmatch(page, 'href%s*=%s*"%s*[^"]+%s*"') do
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s, e = string.find(w, '"')
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httpurl = string.sub(w, s+1, string.len(w)-1)
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i = 1
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-- parse out duplicates, otherwise we'll be here all day
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while list[i] and not(list[i] == httpurl) do
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i = i + 1
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end
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-- parse out duplicates, otherwise we'll be here all day
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while list[i] and not(list[i] == httpurl) do
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i = i + 1
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end
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url_parts = url.parse(httpurl)
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url_parts = url.parse(httpurl)
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if list[i] == nil and is_local_link(url_parts, host) and
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(not url_parts.scheme or url_parts.scheme == "http") then
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httpurl = url.absolute(base_path, httpurl)
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table.insert(list, httpurl)
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if url_parts.query then
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table.insert(injectable, httpurl)
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end
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end
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if list[i] == nil and is_local_link(url_parts, host) and
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(not url_parts.scheme or url_parts.scheme == "http") then
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httpurl = url.absolute(base_path, httpurl)
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table.insert(list, httpurl)
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if url_parts.query then
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table.insert(injectable, httpurl)
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end
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return injectable
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end
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end
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return injectable
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end
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action = function(host, port)
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local urllist, results, injectable
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local links, i, page
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local urllist, injectable
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local results = {}
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local links, i, page
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local injectableQs
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i = 1
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urllist = {}
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injectable = {}
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get_page_from_host = get_page_curried(host, port)
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i = 1
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urllist = {}
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injectable = {}
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-- start at the root
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table.insert(urllist, "/")
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-- start at the root
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if nmap.registry.args['sql-injection.start'] then
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table.insert(urllist, "/" .. nmap.registry.args['sql-injection.start'])
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else
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table.insert(urllist, "/")
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end
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while not(urllist[i] == nil) and i <= maxdepth do
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page = get_page_from_host(urllist[i])
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page = check_redirects(page)
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links = find_links(urllist, urllist[i], page, host)
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-- store all urls with queries for later analysis
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injectable = listop.append(injectable, links)
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i = i + 1
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end
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-- check for argument supplied max depth
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if nmap.registry.args['sql-injection.maxdepth'] then
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maxdepth = tonumber(nmap.registry.args['sql-injection.maxdepth'])
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stdnse.print_debug("maxdepth set to: " .. maxdepth)
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end
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if #injectable > 0 then
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stdnse.print_debug(1, "%s: Testing %d suspicious URLs", filename, #injectable )
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end
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while not(urllist[i] == nil) and i <= maxdepth do
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page = http.get(host, port, urllist[i], nil, nil)
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page = check_redirects(page.body)
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links = find_links(urllist, urllist[i], page, host)
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-- store all urls with queries for later analysis
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injectable = listop.append(injectable, links)
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i = i + 1
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end
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-- test all potentially vulnerable queries
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results = listop.map(enumerate_inject_codes, injectable)
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-- we can get multiple vulnerable URLS from a single query
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results = listop.flatten(results);
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if #injectable > 0 then
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stdnse.print_debug(1, "%s: Testing %d suspicious URLs", filename, #injectable )
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-- test all potentially vulnerable queries
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injectableQs = build_injection_vector(injectable)
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local responses = inject(host, port, injectableQs)
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results = check_responses(injectableQs, responses)
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end
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if not listop.is_empty(results) then
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return "Host might be vulnerable\n" .. table.concat(results, '\n')
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end
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-- we can get multiple vulnerable URLS from a single query
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--results = listop.flatten(results);
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return nil
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--if not listop.is_empty(results) then
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if #results > 0 then
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return "Host might be vulnerable\n" .. table.concat(results, '\n')
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end
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return nil
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end
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