After fuzzing a working parameter, we now have to fuzz the correct value that would return the flag content we need. This section will discuss fuzzing for parameter values, which should be fairly similar to fuzzing for parameters, once we develop our wordlist.

for i in $(seq 1 1000); do echo $i >> ids.txt; done
ffuf -w ids.txt:FUZZ -u http://admin.academy.htb:PORT/admin/admin.php -X POST -d 'id=FUZZ' -H 'Content-Type: application/x-www-form-urlencoded' -fs xxx
curl http://admin.academy.htb:PORT/admin/admin.php -X POST -d 'id=key' -H 'Content-Type: application/x-www-form-urlencoded'