Cheers
Challenge Information
Category: Web Security
Level: easy
Points: 50
description
I Have a Message for you.
Solution
after access the lab

and i already review source and i got no thing

so , we see he tell us undefined index this mean un initialized (i mean it doesn't have value ) so i'll we try to send it as parameter and set any value like this :

and send

well, it's great finding now we repeat same proccess with gimme_flag parameter like this :

and send it

done
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