Hack This Site: Basic Mission 6

Click here: LEVEL 6

I remember that here I write SPOILERS!
I RECOMMEND to win the level alone, using also Google for Theory of arguments

 

 "An encryption system has been set up, which uses an unknown algorithm to change the text given. Requirements: Persistence, some general cryptography knowledge."

We need of

We must find out the mechanism trying words into the encryption system... We have a encrypted password, so we must do the reverse process of what encryption system does. Doing a lot of times, we note that password is encrypted in according to position of every character:

if a character is in first position, it remains the same

if a character is in second position, it is encrypted with the first character after it

if a character is in third position, it is encrypted with the second character after it

and so on...

For example I have: CIAO

Encrypted version will be==>CJCR

We instead, since we have an ENCRYPTED PASSWORD, we must decrypt it, so we must do the reverse process... So we have:

if a character is in first position, it remains the same

if a character is in second position, it is decrypted with the first character before it

if a character is in third position, it is decrypted with the second character before it

and so on...

===============> HTS: Basic Mission 7