Land #7574, Update open_proxy aux module
This commit is contained in:
wchen-r7
commit
00e4a8881f
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@ -7,7 +7,7 @@ require 'msf/core'
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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::Tcp
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include Msf::Exploit::Remote::HttpClient
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include Msf::Auxiliary::Scanner
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include Msf::Auxiliary::WmapScanServer
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include Msf::Auxiliary::Report
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@ -16,8 +16,10 @@ class MetasploitModule < Msf::Auxiliary
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super(update_info(info,
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'Name' => 'HTTP Open Proxy Detection',
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'Description' => %q{
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Checks if an HTTP proxy is open. False positive are avoided
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verifing the HTTP return code and matching a pattern.
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Checks if an HTTP proxy is open. False positive are avoided
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verifying the HTTP return code and matching a pattern.
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The CONNECT method is verified only the return code.
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HTTP headers are shown regarding the use of proxy or load balancer.
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},
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'References' =>
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[
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@ -31,224 +33,126 @@ class MetasploitModule < Msf::Auxiliary
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register_options(
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[
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Opt::RPORT(8080),
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OptBool.new('MULTIPORTS', [ false, 'Multiple ports will be used : 80, 1080, 3128, 8080, 8123', false ]),
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OptBool.new('RANDOMIZE_PORTS', [ false, 'Randomize the order the ports are probed', false ]),
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OptBool.new('VERIFY_CONNECT', [ false, 'Enable test for CONNECT method', false ]),
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OptBool.new('VERIFY_HEAD', [ false, 'Enable test for HEAD method', false ]),
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OptBool.new('LOOKUP_PUBLIC_ADDRESS', [ false, 'Enable test for retrieve public IP address via RIPE.net', false ]),
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OptString.new('SITE', [ true, 'The web site to test via alleged web proxy (default is www.google.com)', 'www.google.com' ]),
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OptString.new('ValidCode', [ false, "Valid HTTP code for a successfully request", '200,302' ]),
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OptString.new('ValidPattern', [ false, "Valid HTTP server header for a successfully request", 'server: gws' ]),
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OptString.new('UserAgent', [ true, 'The HTTP User-Agent sent in the request', 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)' ]),
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], self.class)
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register_advanced_options(
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[
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OptString.new('RIPE_ADDRESS', [ true, 'www.ripe.net IP address', '193.0.6.139' ]),
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OptBool.new('MULTIPORTS', [ false, 'Multiple ports will be used: 80, 443, 1080, 3128, 8000, 8080, 8123', false ]),
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OptBool.new('VERIFYCONNECT', [ false, 'Enable CONNECT HTTP method check', false ]),
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OptString.new('CHECKURL', [ true, 'The web site to test via alleged web proxy', 'http://www.google.com' ]),
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OptString.new('VALIDCODES', [ true, "Valid HTTP code for a successfully request", '200,302' ]),
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OptString.new('VALIDPATTERN', [ true, "Valid pattern match (case-sensitive into the headers and HTML body) for a successfully request", '<TITLE>302 Moved</TITLE>' ]),
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], self.class)
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register_wmap_options({
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'OrderID' => 1,
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'Require' => {},
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})
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'OrderID' => 1,
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'Require' => {},
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})
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end
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def run_host(target_host)
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check_url = datastore['CHECKURL']
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if datastore['VERIFYCONNECT']
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target_method = 'CONNECT'
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# CONNECT doesn't need <scheme> but need port
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check_url = check_url.gsub(/[http:\/\/|https:\/\/]/, '')
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if check_url !~ /:443$/
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check_url = check_url + ":443"
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end
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else
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target_method = 'GET'
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# GET only http request
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check_url = check_url.gsub(/https:\/\//, '')
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if check_url !~ /^http:\/\//i
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check_url = 'http://' + check_url
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end
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end
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target_ports = []
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if datastore['MULTIPORTS']
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target_ports = [ 80, 1080, 3128, 8080, 8123 ]
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target_ports = [ 80, 443, 1080, 3128, 8000, 8080, 8123 ]
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else
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target_ports.push(datastore['RPORT'].to_i)
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end
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target_ports.push(datastore['RPORT'].to_i)
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if datastore['RANDOMIZE_PORTS']
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target_ports = target_ports.sort_by { rand }
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end
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target_ports = target_ports.uniq
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site = datastore['SITE']
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user_agent = datastore['UserAgent']
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target_proxy_headers = [ 'Forwarded', 'Front-End-Https', 'Max-Forwards', 'Via', 'X-Cache', 'X-Cache-Lookup', 'X-Client-IP', 'X-Forwarded-For', 'X-Forwarded-Host' ]
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target_ports.each do |target_port|
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datastore['RPORT'] = target_port
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if target_host == site
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print_error("Target is the same as proxy site.")
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else
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check_host(target_host,target_port,site,user_agent)
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end
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verify_target(target_host,target_port,target_method,check_url,target_proxy_headers)
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end
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end
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def check_pattern(res,pattern)
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def verify_target(target_host,target_port,target_method,check_url,target_proxy_headers)
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if (res =~ /#{pattern}/i)
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return 1
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else
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return 0
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end
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vprint_status("#{peer} - Sending a web request... [#{target_method}][#{check_url}]")
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end
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def write_request(method,site,user_agent)
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request = method + " http://" + site + "/ HTTP/1.1" + "\r\n" +
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"Host: " + site + "\r\n" +
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"Connection: close" + "\r\n" +
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"User-Agent: #{user_agent}" + "\r\n" +
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"Accept-Encoding: *" + "\r\n" +
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"Accept-Charset: ISO-8859-1,UTF-8;q=0.7,*;q=0.7" + "\r\n" +
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"Cache-Control: no" + "\r\n" +
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"Accept-Language: de,en;q=0.7,en-us;q=0.3" + "\r\n" +
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"\r\n"
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return request
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end
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def send_request(site,user_agent)
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datastore['RPORT'] = target_port
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begin
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connect
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request = write_request('GET',site,user_agent)
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sock.put(request)
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res = sock.get_once(-1, 10)
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disconnect
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validcodes = datastore['ValidCode'].split(/,/)
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is_valid = 0
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retcode = 0
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retvia = 'n/a'
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retsrv = 'n/a'
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if (res and res.match(/^HTTP\/1\.[01]\s+([^\s]+)\s+(.*)/))
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retcode = $1
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if (res.match(/Server: (.*)/))
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retsrv = $1.chomp
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end
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if (res.match(/Via: (.*)\((.*)\)/))
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retvia = $2
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end
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validcodes.each do |validcode|
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if (retcode.to_i == validcode.to_i)
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is_valid += 1
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end
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end
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if (check_pattern(res,datastore['ValidPattern']) == 1)
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is_valid += 1
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end
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end
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retres = [ is_valid, retcode, retvia, retsrv ]
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return retres
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
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rescue ::Timeout::Error, ::Errno::EPIPE
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end
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end
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def send_request_ripe(user_agent)
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ripe_address = datastore['RIPE_ADDRESS']
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begin
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connect
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request = write_request('GET',ripe_address,user_agent)
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sock.put(request)
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res = sock.get_once(-1, 10)
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disconnect
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retres = 0
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if (res and res.match(/^HTTP\/1\.[01]\s+([^\s]+)\s+(.*)/))
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retcode = $1
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if (retcode.to_i == 200)
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res.match(/Your IP Address is: <strong>(\s+)([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})(\s+)<\/strong>/m)
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retres = "#{$2}.#{$3}.#{$4}.#{$5}"
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end
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end
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return retres
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
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rescue ::Timeout::Error, ::Errno::EPIPE
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end
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end
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def check_host(target_host,target_port,site,user_agent)
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vprint_status("Checking #{target_host}:#{target_port} [#{site}]")
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is_valid,retcode,retvia,retsrv = send_request(site,user_agent)
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if (is_valid == 2)
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print_status("#{target_host}:#{target_port} is a potentially OPEN proxy [#{retcode}] (#{retvia})")
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report_note(
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:host => target_host,
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:port => target_port,
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:method => 'GET',
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:proto => 'tcp',
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:sname => (ssl ? 'https' : 'http'),
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:type => 'OPEN PROXY',
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:data => 'Open proxy'
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res = send_request_cgi(
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'uri' => check_url,
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'method' => target_method,
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'version' => '1.1'
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)
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if (datastore['VERIFY_CONNECT'])
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return if not res
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permit_connect,retcode,retvia,retsrv = send_request(site,user_agent)
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vprint_status("#{peer} - Returns with '#{res.code}' status code [#{target_method}][#{check_url}]")
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if (permit_connect == 2)
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print_status("#{target_host}:#{target_port} CONNECT method successfully tested")
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valid_codes = datastore['VALIDCODES'].split(/,/)
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target_proxy_headers_results = []
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target_proxy_headers.each do |proxy_header|
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if (res.headers.to_s.match(/#{proxy_header}: (.*)/))
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proxy_header_value = $1
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# Ok...I don't like it but works...
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target_proxy_headers_results.push("\n |_ #{proxy_header}: #{proxy_header_value}")
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end
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end
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if target_proxy_headers_results.any?
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proxy_headers = target_proxy_headers_results.join()
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end
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if datastore['VERIFYCONNECT']
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# Verifiying CONNECT we check only the return code
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if valid_codes.include?(res.code.to_s)
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print_good("#{peer} - Potentially open proxy [#{res.code}][#{target_method}]#{proxy_headers}")
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report_note(
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:host => target_host,
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:port => target_port,
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:method => 'CONNECT'
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:method => target_method,
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:proto => 'tcp',
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:sname => (ssl ? 'https' : 'http'),
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:type => 'OPEN HTTP PROXY',
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:data => 'Open http proxy (CONNECT)'
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)
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end
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end
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else
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# Verify return code && (headers.pattern or body.pattern)
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if valid_codes.include?(res.code.to_s) && (res.headers.include?(datastore['VALIDPATTERN']) || res.body.include?(datastore['VALIDPATTERN']))
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if (datastore['VERIFY_HEAD'])
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permit_connect,retcode,retvia,retsrv = send_request(site,user_agent)
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if (permit_connect == 2)
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print_status("#{target_host}:#{target_port} HEAD method successfully tested")
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print_good("#{peer} - Potentially open proxy [#{res.code}][#{target_method}]#{proxy_headers}")
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report_note(
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:host => target_host,
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:port => target_port,
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:method => 'HEAD'
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:method => target_method,
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:proto => 'tcp',
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:sname => (ssl ? 'https' : 'http'),
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:type => 'OPEN HTTP PROXY',
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:data => 'Open http proxy (GET)'
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)
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end
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end
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if (datastore['LOOKUP_PUBLIC_ADDRESS'])
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retres = send_request_ripe(user_agent)
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if (retres != 0)
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print_status("#{target_host}:#{target_port} using #{retres} public IP address")
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end
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end
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Timeout::Error, ::Errno::EPIPE => e
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vprint_error("#{peer} - The port '#{target_port}' is unreachable!")
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return nil
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end
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end
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end
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