adfoster-r7
63 lines
2.0 KiB
Ruby
63 lines
2.0 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Post
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Windows Gather DNS Cache',
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'Description' => %q{ This module displays the records stored in the DNS cache.},
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'License' => MSF_LICENSE,
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'Author' => [ 'Borja Merino <bmerinofe[at]gmail.com>'],
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'Platform' => [ 'win' ],
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'SessionTypes' => [ 'meterpreter' ],
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'Compat' => {
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'Meterpreter' => {
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'Commands' => %w[
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stdapi_railgun_api
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stdapi_railgun_memread
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]
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}
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}
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)
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)
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end
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def run
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rtable = Rex::Text::Table.new(
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'Header' => 'DNS Cached Entries',
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'Indent' => 3,
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'Columns' => ['TYPE', 'DOMAIN']
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)
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client.railgun.add_dll('dnsapi') if !client.railgun.get_dll('dnsapi')
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client.railgun.add_function('dnsapi', 'DnsGetCacheDataTable', 'DWORD', [['PBLOB', 'cacheEntries', 'inout']])
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result = client.railgun.dnsapi.DnsGetCacheDataTable('aaaa')
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address = result['cacheEntries'].unpack1('V')
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# typedef struct _DNS_CACHE_ENTRY
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# struct _DNS_CACHE_ENTRY* pNext;
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# PWSTR pszName;
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# unsigned short wType;
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# unsigned short wDataLength;
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# unsigned long dwFlags;
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while (address != 0)
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struct_pointer = client.railgun.memread(address, 10)
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# Get the pointer to the DNS record name
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domain_pointer = struct_pointer[4, 4].unpack1('V')
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dns_type = struct_pointer[8, 2].unpack1('h*').reverse
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# According to the restrictions on valid host names, we read a maximum of 255 characters for each entry
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domain_name = client.railgun.memread(domain_pointer, 255).split("\x00\x00").first
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rtable << [dns_type, domain_name]
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# Get the next _DNS_CACHE_ENTRY struct pointer
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address = struct_pointer[0, 4].unpack1('V')
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end
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print_status(rtable.to_s)
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end
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end
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