title: MD5 hashes and Regular Expressions
body: <p>I received a <code>MD5</code> hash and a <code>Regular Expression</code> which have the same plaintext..
  How do I use the <code>Regular Expression</code> to crack the <code>MD5</code> hash and find the text behind the <code>MD5</code>? </p>
  
  <pre><code>b89e49cab317f2681be60fb3d1c0f8f8
  [(a|c|d)n-t\|]{8}
  </code></pre>