mirror of
https://github.com/rapid7/metasploitable3.git
synced 2024-08-27 00:01:06 +02:00
85 lines
1.8 KiB
Ruby
85 lines
1.8 KiB
Ruby
|
#!/usr/bin/env ruby
|
||
|
|
||
|
require 'rqrcode'
|
||
|
require 'fileutils'
|
||
|
|
||
|
# Installing rmagick is weird.
|
||
|
# Do:
|
||
|
# brew install imagemagick
|
||
|
# brew unlink imagemagick
|
||
|
# brew install imagemagick@6 && brew link imagemagick@6 --force
|
||
|
# gem install rmagick
|
||
|
#
|
||
|
# https://stackoverflow.com/questions/39494672/rmagick-installation-cant-find-magickwand-h
|
||
|
require 'Rmagick'
|
||
|
include Magick
|
||
|
|
||
|
class SevenOfDiamonds
|
||
|
|
||
|
TEMPPATH = File.expand_path(File.join(__FILE__, '..', '.temp'))
|
||
|
|
||
|
def initialize
|
||
|
make_temp_folder
|
||
|
end
|
||
|
|
||
|
def make_temp_folder
|
||
|
Dir.mkdir(TEMPPATH) unless Dir.exists?(TEMPPATH)
|
||
|
end
|
||
|
|
||
|
def clear
|
||
|
FileUtils.rm_rf(TEMPPATH) if Dir.exists?(TEMPPATH)
|
||
|
end
|
||
|
|
||
|
def make_flag(source_image_path, out_path)
|
||
|
bin = File.read(source_image_path)
|
||
|
h = get_hex(bin)
|
||
|
generate_qr_codes(h)
|
||
|
make_gif(out_path)
|
||
|
end
|
||
|
|
||
|
def print_status(msg='')
|
||
|
puts "[*] #{msg}"
|
||
|
end
|
||
|
|
||
|
def get_hex(bin)
|
||
|
h = bin.unpack('H*').first
|
||
|
print_status("Hex string size: #{h.length}")
|
||
|
h
|
||
|
end
|
||
|
|
||
|
def generate_qr_codes(text)
|
||
|
str_length = 50
|
||
|
max_fname_length = (text.length / str_length).round.to_s.length
|
||
|
counter = 0
|
||
|
(0..text.length).step(str_length) do |i|
|
||
|
s = text[i, str_length]
|
||
|
if !s.nil? && !s.empty?
|
||
|
counter += 1
|
||
|
qr = RQRCode::QRCode.new(s)
|
||
|
File.open(File.join(TEMPPATH, "#{counter.to_s.rjust(max_fname_length, '0')}.png"), 'wb') { |f| f.write(png = qr.as_png) }
|
||
|
print_status("QR ##{counter} generated: #{s}")
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
|
||
|
def make_gif(out_path)
|
||
|
gif = ImageList.new(*Dir[".temp/*.png"])
|
||
|
gif.delay = 10
|
||
|
gif.write(out_path)
|
||
|
print_status("GIF written as: #{out_path}")
|
||
|
end
|
||
|
|
||
|
end
|
||
|
|
||
|
if __FILE__ == $PROGRAM_NAME
|
||
|
source_image_path = 'hint.png'
|
||
|
out_image_path = 'hint.gif'
|
||
|
card = SevenOfDiamonds.new
|
||
|
begin
|
||
|
card.make_flag(source_image_path, out_image_path)
|
||
|
ensure
|
||
|
card.clear
|
||
|
end
|
||
|
|
||
|
end
|