85 lines
2.3 KiB
Ruby
85 lines
2.3 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::Auxiliary
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include Msf::Exploit::Remote::Tcp
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include Msf::Auxiliary::Fuzzer
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'HTTP GET Request URI Fuzzer (Incrementing Lengths)',
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'Description' => %q{
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This module sends a series of HTTP GET request with incrementing URL lengths.
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},
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'Author' => [ 'nullthreat' ],
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'License' => MSF_LICENSE
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))
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register_options([
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Opt::RPORT(80),
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OptInt.new("MAXLENGTH", [true, "The longest string length to try", 16384] ),
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OptString.new("URIBASE", [true, "The base URL to use for the request fuzzer", "/"]),
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OptString.new("VHOST", [false, "The virtual host name to use in requests"])
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])
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end
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def do_http_get(uri='',opts={})
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@connected = false
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connect
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@connected = true
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sock.put("GET #{uri} HTTP/1.1\r\nHost: #{datastore['VHOST'] || rhost}\r\n\r\n")
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sock.get_once(-1, opts[:timeout] || 0.01)
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end
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def run
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last_str = nil
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last_inp = nil
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last_err = nil
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pre = make_http_uri_base
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cnt = 0
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1.upto(datastore['MAXLENGTH'].to_i) do |len|
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cnt += 1
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str = fuzzer_gen_string(len)
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# XXX: Encode the string or leave it raw? Best to make a new boolean option to enable/disable this
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uri = pre + str
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if(cnt % 100 == 0)
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print_status("Fuzzing with iteration #{cnt} using string length #{len}")
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end
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begin
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r = do_http_get(uri,:timeout => 0.25)
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rescue ::Interrupt
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print_status("Exiting on interrupt: iteration #{cnt} using string length #{len}")
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raise $!
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rescue ::Exception => e
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last_err = e
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ensure
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disconnect
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end
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if(not @connected)
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if(last_str)
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print_status("The service may have crashed: iteration:#{cnt-1} len=#{len} uri=''#{last_str}'' error=#{last_err}")
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else
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print_status("Could not connect to the service: #{last_err}")
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end
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return
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end
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last_str = str
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last_inp = @last_fuzzer_input
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end
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end
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def make_http_uri_base
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datastore['URIBASE']
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end
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end
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