Natas 4

Once we login to the page we are greeted with

Immediately I thought we can use cURL to exploit this and obtain the password and thus I tried that by doing

curl -H "Referer: http://natas5.natas.labs.overthewire.org/" http://natas4.natas.labs.overthewire.org/

However i was faced with

Unauthorised access

turns out i forgot to put in the username and password from the previous part to login, so after adding that in and editing my curl request slightly

 curl -u natas4:QryZXc2e0zahULdHrtHxzyYkj59kUxLQ -H "Referer: http://natas5.natas.labs.overthewire.org/" http://natas4.natas.labs.overthewire.org/

We get the flag

Access granted. The password for natas5 is 0n35PkggAPm2zbEpOU802c0x0Msn1ToK