Decode provisioning profile

gistfile1.rb

#!/usr/bin/env ruby

require 'rubygems'

require 'openssl'

begin
  gem 'plist', '~> 3.1.0'
  require 'plist'
rescue Gem::LoadError
  abort "Please install plist gem with:\n  sudo gem install plist"
end

raw = File.read(ARGV[0])
# Extract the plist from the binary
regexp = /.*(<\?xml .*<\/plist>).*/mn
plist = raw.match(regexp)[1]
dict = Plist::parse_xml(plist)
puts dict.inspect

devcerts = dict["DeveloperCertificates"]
decoded_certs = []

devcerts.each do |data|
  cert = OpenSSL::X509::Certificate.new(data.read)
  decoded_certs << cert
end

puts ""
puts "Certificates: #{decoded_certs.length}"
puts ""
decoded_certs.each do |cert|
  puts "#{cert.to_text}"
end