49 lines
1.2 KiB
Ruby
49 lines
1.2 KiB
Ruby
# Psnuffle password sniffer add-on class for HTTP GET URL's
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# part of psnuffle sniffer auxiliary module
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#
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# Very simple example how to write sniffer extensions
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#
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# Sniffer class for GET URL's
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class SnifferURL < BaseProtocolParser
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def register_sigs
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self.sigs = {
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:get => /^GET\s+([^\n]+)\s+HTTP\/\d\.\d/i,
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:webhost => /^HOST\:\s+([^\n\r]+)/i,
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}
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end
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def parse(pkt)
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# We want to return immediantly if we do not have a packet which is handled by us
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return unless pkt.is_tcp?
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return if (pkt.tcp_sport != 80 and pkt.tcp_dport != 80)
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s = find_session((pkt.tcp_sport == 80) ? get_session_src(pkt) : get_session_dst(pkt))
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self.sigs.each_key do |k|
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# There is only one pattern per run to test
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matched = nil
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matches = nil
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if(pkt.payload =~ self.sigs[k])
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matched = k
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matches = $1
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sessions[s[:session]].merge!({k => matches})
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end
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case matched
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when :webhost
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sessions[s[:session]].merge!({k => matches})
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if(s[:get])
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print_status("HTTP GET: #{s[:session]} http://#{s[:webhost]}#{s[:get]}")
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sessions.delete(s[:session])
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return
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end
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when nil
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# No matches, no saved state
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end # end case matched
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end # end of each_key
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end # end of parse
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end # end of URL sniffer
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