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metasploit-framework
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Added TARGETACTION options and wildcard support

unstable
Jose Selvi 2012-03-25 11:09:17 +03:00 committed by Tod Beardsley
parent 5d8fbefc3d
commit 1d6b2eb3fe
1 changed files with 36 additions and 14 deletions
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50
modules/auxiliary/server/fakedns.rb
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@ -45,8 +45,8 @@ class Metasploit3 < Msf::Auxiliary
OptAddress.new('SRVHOST', [ true, "The local host to listen on.", '0.0.0.0' ]), OptAddress.new('SRVHOST', [ true, "The local host to listen on.", '0.0.0.0' ]),
OptPort.new('SRVPORT', [ true, "The local port to listen on.", 53 ]), OptPort.new('SRVPORT', [ true, "The local port to listen on.", 53 ]),
OptAddress.new('TARGETHOST', [ false, "The address that all names should resolve to", nil ]), OptAddress.new('TARGETHOST', [ false, "The address that all names should resolve to", nil ]),
OptString.new('DOMAINBYPASS', [ true, "The list of domain names we want to fully resolve", 'www.google.com']), OptString.new('TARGETDOMAIN', [ true, "The list of target domain names we want to fully resolver (bypass) or fake resolve (fake)", 'www.google.com']),
OptString.new('TARGETACTION', [ true, "Action for TARGETDOMAIN (fake|bypass)", 'BYPASS']),
], self.class) ], self.class)
register_advanced_options( register_advanced_options(
@ -88,7 +88,8 @@ class Metasploit3 < Msf::Auxiliary
@sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_REUSEADDR, 1) @sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_REUSEADDR, 1)
@sock.bind(datastore['SRVHOST'], @port) @sock.bind(datastore['SRVHOST'], @port)
@run = true @run = true
@domain_bypass_list = datastore['DOMAINBYPASS'].split @domain_target_list = datastore['DOMAINTARGET'].split
@bypass = ( datastore['TARGETACTION'].upcase == "BYPASS" )
print_status("DNS server started") print_status("DNS server started")
begin begin
@ -137,17 +138,38 @@ class Metasploit3 < Msf::Auxiliary
answer = Resolv::DNS::Resource::IN::A.new( @targ || ::Rex::Socket.source_address(addr[3].to_s) ) answer = Resolv::DNS::Resource::IN::A.new( @targ || ::Rex::Socket.source_address(addr[3].to_s) )
# Identify potential domain exceptions # Identify potential domain exceptions
@domain_bypass_list.each do |ex| @match_target = false
if (name.to_s <=> ex) == 0 @match_name = ""
# Resolve the exception domain @domain_target_list.each do |ex|
ip = Resolv::DNS.new().getaddress(name).to_s escaped = Regexp.escape(ex).gsub('\*','.*?')
answer = Resolv::DNS::Resource::IN::A.new( ip ) regex = Regexp.new "^#{escaped}$", Regexp::IGNORECASE
if (@log_console) #if ( ex == name.to_s )
print_status("DNS bypass domain found: #{ex}") if ( name.to_s =~ regex )
print_status("DNS bypass domain #{ex} resolved #{ip}") @match_target = true
end @match_name = ex
end end
end end
if (@match_target and not @bypass) or (not @match_target and @bypass)
# Resolve FAKE response
if (@log_console)
print_status("DNS target domain found: #{@match_name}")
print_status("DNS target domain #{@match_name} faked")
end
else
# Resolve the exception domain
begin
ip = Resolv::DNS.new().getaddress(name).to_s
answer = Resolv::DNS::Resource::IN::A.new( ip )
rescue ::Exception => e
print_error("Error resolving #{name.to_s}")
next
end
if (@log_console)
print_status("DNS bypass domain found: #{@match_name}")
print_status("DNS bypass domain #{@match_name} resolved #{ip}")
end
end
request.add_answer(name, 60, answer) request.add_answer(name, 60, answer)