http://binternet.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/HTB/Easy/37.html
(check_file_type($_FILES["myFile"]) && filesize($_FILES['myFile']['tmp_name']) < 60000)) { Looking at the results, we see a few interesting variables , most notably the $_FILES global variable.
we can also see that we must not upload a file that is too large, AND (&&) we need to make sure the check_file_type function allows us to proceed.
so let's run the grep command again, this time looking for the check_file_type...