The fifth basic web mission is very different from the prior missions (except maybe in one way the second mission) in that it requires an extensive use of logic. Actually this mission doesn’t have anything to do with hacking, but it teaches a very valuable lesson, which we will come to later.
By looking at the source code, we can only see the two forms. Nothing interesting. The next step is to try out the password encryption form. Type anything, and you can see that it does work. It shows you the encrypted string. Logically, the task is simply to construct a string that is encrypted to the code you were given. I got dg7847>l. First, try with something simple: