Challenge 01:
Filename: login.html
Today I will share some of my answer in previous FLARE challenge. It was really fun and interesting but I only managed to answer the first 4 because of free time. maybe i will continue the next batch asap. :)
Analysis:
The file requesting for the right
flag to satisfied the condition and alert the message “Correct flag”.
Upon analysis the function used
to encrypt the hidden flag is rot13 encryption (symmetric encryption) means the
encryption function can be also used to decrypt the encrypted string.
Fig 1 challenge #1 code
So I just put alert box to the
code to see what happen if I put the "PyvragFvqrYbtvafNerRnfl@syner-ba.pbz"
as input:
Fig 2 Modified code
the alert result is the correct flag to trigger the right alert.
Fig 3 decrypted flag
Fig 4 trigger the correct flag. :)
