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#!/usr/bin/env ruby
# Usage exemple: ./fingerprint twitter.com api.twitter.com ton.twitter.com twitter.com tweetdeck.twitter.com userstream.twitter.com abs.twitter.com psb.twimg.com ton.twing.com video.twimg.com 2> /dev/null
# List of figerprint by domain name
require 'resolv'
require 'openssl'
require 'set'
hosts = Set.new
ips = Set.new
certs = Set.new
subjects = Set.new
cas = Set.new
fps = Set.new
keys = Set.new
resolver = Resolv::DNS.new
ARGV.each do |host|
$stderr.puts host
hosts << host
resolver.each_address(host) do |ip|
ip = ip.to_s
ips << ip
$stderr.puts " #{ip}"
tcp_client = TCPSocket.new ip, 443
ssl_client = OpenSSL::SSL::SSLSocket.new tcp_client
ssl_client.hostname = host
ssl_client.connect
cert = ssl_client.peer_cert
certs << cert
subject = cert.subject
subjects << subject
$stderr.puts " CN=#{subject}"
ca = cert.issuer
cas << ca
$stderr.puts " CA=#{ca}"
fp = OpenSSL::Digest::SHA256.hexdigest cert.to_der
fps << fp
$stderr.puts " fp=#{fp}"
key = ::OpenSSL::Digest::SHA256.hexdigest cert.public_key.to_der
keys << key
$stderr.puts " key=#{key}"
ssl_client.close
end
end
puts "#{hosts.size} hosts"
hosts.sort.each { |l| puts " #{l}"}
puts "#{ips.size} IPs"
ips.sort.each { |l| puts " #{l}"}
puts "#{fps.size} certificates"
fps.sort.each { |l| puts " #{l}"}
puts "#{cas.size} CAs"
cas.sort.each { |l| puts " #{l}"}
puts "#{subjects.size} subjects"
subjects.sort.each { |l| puts " #{l}"}
puts "#{keys.size} keys"
keys.sort.each { |l| puts " #{l}"}
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