187 lines
9.1 KiB
Ruby
187 lines
9.1 KiB
Ruby
#
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# Copyright (c) 2006-2019 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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module Modules
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# @note Purpose: avoid rewriting several times the same code.
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module BeEFJS
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# Builds the default beefjs library (all default components of the library).
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# @param [Object] req_host The request object
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def build_beefjs!(req_host)
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config = BeEF::Core::Configuration.instance
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# @note set up values required to construct beefjs
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beef_js = ''
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# @note location of sub files
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beef_js_path = "#{$root_dir}/core/main/client/"
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# @note External libraries (like jQuery) that are not evaluated with Eruby and possibly not obfuscated
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ext_js_sub_files = %w(lib/jquery-1.12.4.min.js lib/jquery-migrate-1.4.1.js lib/evercookie.js lib/json2.js lib/mdetect.js lib/jquery.blockUI.js)
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# @note BeEF libraries: need Eruby evaluation and obfuscation
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beef_js_sub_files = %w(beef.js browser.js browser/cookie.js browser/popup.js session.js os.js hardware.js dom.js logger.js net.js updater.js encode/base64.js encode/json.js net/local.js init.js mitb.js geolocation.js net/dns.js net/connection.js net/cors.js net/requester.js net/xssrays.js net/portscanner.js are.js)
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# @note Load websocket library only if WS server is enabled in config.yaml
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if config.get("beef.http.websocket.enable") == true
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beef_js_sub_files << "websocket.js"
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end
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# @note Load webrtc library only if WebRTC extension is enabled
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if config.get("beef.extension.webrtc.enable") == true
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beef_js_sub_files << "lib/webrtcadapter.js"
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beef_js_sub_files << "webrtc.js"
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end
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# @note antisnatchor: leave timeout.js as the last one!
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beef_js_sub_files << "timeout.js"
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ext_js_to_obfuscate = ''
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ext_js_to_not_obfuscate = ''
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# @note If Evasion is enabled, the final ext_js string will be ext_js_to_obfuscate + ext_js_to_not_obfuscate
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# @note If Evasion is disabled, the final ext_js will be just ext_js_to_not_obfuscate
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ext_js_sub_files.each { |ext_js_sub_file|
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if config.get("beef.extension.evasion.enable")
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if config.get("beef.extension.evasion.exclude_core_js").include?(ext_js_sub_file)
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print_debug "Excluding #{ext_js_sub_file} from core files obfuscation list"
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# do not obfuscate the file
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ext_js_sub_file_path = beef_js_path + ext_js_sub_file
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ext_js_to_not_obfuscate << (File.read(ext_js_sub_file_path) + "\n\n")
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else
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ext_js_sub_file_path = beef_js_path + ext_js_sub_file
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ext_js_to_obfuscate << (File.read(ext_js_sub_file_path) + "\n\n")
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end
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else
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# Evasion is not enabled, do not obfuscate anything
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ext_js_sub_file_path = beef_js_path + ext_js_sub_file
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ext_js_to_not_obfuscate << (File.read(ext_js_sub_file_path) + "\n\n")
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end
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}
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# @note construct the beef_js string from file(s)
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beef_js_sub_files.each { |beef_js_sub_file|
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beef_js_sub_file_path = beef_js_path + beef_js_sub_file
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beef_js << (File.read(beef_js_sub_file_path) + "\n\n")
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}
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# @note create the config for the hooked browser session
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hook_session_config = BeEF::Core::Server.instance.to_h
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# @note if http_host="0.0.0.0" in config ini, use the host requested by client
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unless hook_session_config['beef_public'].nil?
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if hook_session_config['beef_host'] != hook_session_config['beef_public']
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hook_session_config['beef_host'] = hook_session_config['beef_public']
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hook_session_config['beef_url'].sub!(/#{hook_session_config['beef_host']}/, hook_session_config['beef_public'])
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end
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end
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if hook_session_config['beef_host'].eql? "0.0.0.0"
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hook_session_config['beef_host'] = req_host
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hook_session_config['beef_url'].sub!(/0\.0\.0\.0/, req_host)
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end
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# @note set the XHR-polling timeout
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hook_session_config['xhr_poll_timeout'] = config.get("beef.http.xhr_poll_timeout")
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# @note set the hook file path and BeEF's cookie name
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hook_session_config['hook_file'] = config.get("beef.http.hook_file")
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hook_session_config['hook_session_name'] = config.get("beef.http.hook_session_name")
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# @note if http_port <> public_port in config ini, use the public_port
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unless hook_session_config['beef_public_port'].nil?
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if hook_session_config['beef_port'] != hook_session_config['beef_public_port']
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hook_session_config['beef_port'] = hook_session_config['beef_public_port']
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hook_session_config['beef_url'].sub!(/#{hook_session_config['beef_port']}/, hook_session_config['beef_public_port'])
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if hook_session_config['beef_public_port'] == '443'
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hook_session_config['beef_url'].sub!(/http:/, 'https:')
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end
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end
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end
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# @note Set some WebSocket properties
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if config.get("beef.http.websocket.enable")
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hook_session_config['websocket_secure'] = config.get("beef.http.websocket.secure")
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hook_session_config['websocket_port'] = config.get("beef.http.websocket.port")
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hook_session_config['ws_poll_timeout'] = config.get("beef.http.websocket.ws_poll_timeout")
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hook_session_config['ws_connect_timeout'] = config.get("beef.http.websocket.ws_connect_timeout")
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hook_session_config['websocket_sec_port']= config.get("beef.http.websocket.secure_port")
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end
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# @note Set if PhishingFrenzy integration is enabled
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if config.get("beef.integration.phishing_frenzy.enable")
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hook_session_config['phishing_frenzy_enable'] = config.get("beef.integration.phishing_frenzy.enable")
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end
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# @note populate place holders in the beef_js string and set the response body
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eruby = Erubis::FastEruby.new(beef_js)
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@hook = eruby.evaluate(hook_session_config)
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if config.get("beef.extension.evasion.enable")
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evasion = BeEF::Extension::Evasion::Evasion.instance
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@final_hook = ext_js_to_not_obfuscate + evasion.add_bootstrapper + evasion.obfuscate(ext_js_to_obfuscate + @hook)
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else
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@final_hook = ext_js_to_not_obfuscate + @hook
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end
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# @note Return the final hook to be sent to the browser
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@body << @final_hook
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end
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# Finds the path to js components
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# @param [String] component Name of component
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# @return [String|Boolean] Returns false if path was not found, otherwise returns component path
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def find_beefjs_component_path(component)
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component_path = component
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component_path.gsub!(/beef./, '')
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component_path.gsub!(/\./, '/')
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component_path.replace "#{$root_dir}/core/main/client/#{component_path}.js"
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return false if not File.exists? component_path
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component_path
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end
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# Builds missing beefjs components.
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# @param [Array] beefjs_components An array of component names
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def build_missing_beefjs_components(beefjs_components)
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# @note verifies that @beef_js_cmps is not nil to avoid bugs
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@beef_js_cmps = '' if @beef_js_cmps.nil?
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if beefjs_components.is_a? String
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beefjs_components_path = find_beefjs_component_path(beefjs_components)
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raise "Invalid component: could not build the beefjs file" if not beefjs_components_path
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beefjs_components = {beefjs_components => beefjs_components_path}
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end
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beefjs_components.keys.each { |k|
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next if @beef_js_cmps.include? beefjs_components[k]
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# @note path to the component
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component_path = beefjs_components[k]
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# @note we output the component to the hooked browser
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config = BeEF::Core::Configuration.instance
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if config.get("beef.extension.evasion.enable")
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evasion = BeEF::Extension::Evasion::Evasion.instance
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@body << evasion.obfuscate(File.read(component_path) + "\n\n")
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else
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@body << File.read(component_path) + "\n\n"
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end
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# @note finally we add the component to the list of components already generated so it does not get generated numerous times.
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if @beef_js_cmps.eql? ''
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@beef_js_cmps = component_path
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else
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@beef_js_cmps += ",#{component_path}"
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end
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}
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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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end
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