Ayuda para desencriptar un plugin PHP

  • Autor Autor nicorto
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nicorto

Hola, hace poco me descargué un plugin y trae un php encriptado y la verdad no sé por que lo está y me preocupa cual sea su función.

PHP:
<?php
header('Content-type: image/png');
$encode_image_png_noref = "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";
$encode_image_png_1x1 = 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAGUExURQAAAP///6XZn90AAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAKSURBVBjTY2gAAACCAIGnAboQAAAAAElFTkSuQmCC';
if (isset($_SERVER['HTTP_REFERER'])) echo base64_decode( $encode_image_png_1x1 ); else echo base64_decode( $encode_image_png_noref );
?>

Si alguien sabe se lo agradezco, saludos
 
Hola, hace poco me descargué un plugin y trae un php encriptado y la verdad no sé por que lo está y me preocupa cual sea su función.

PHP:
<?php
header('Content-type: image/png');
$encode_image_png_noref = "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";
$encode_image_png_1x1 = 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAGUExURQAAAP///6XZn90AAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAKSURBVBjTY2gAAACCAIGnAboQAAAAAElFTkSuQmCC';
if (isset($_SERVER['HTTP_REFERER'])) echo base64_decode( $encode_image_png_1x1 ); else echo base64_decode( $encode_image_png_noref );
?>

Si alguien sabe se lo agradezco, saludos

-.-
si miras bien es solo una imagen...
si el referer es vacio coloca una img de 1x1, sino coloca una imagen distinta.
 
Hola, hace poco me descargué un plugin y trae un php encriptado y la verdad no sé por que lo está y me preocupa cual sea su función.

PHP:
<?php
header('Content-type: image/png');
$encode_image_png_noref = "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";
$encode_image_png_1x1 = 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAGUExURQAAAP///6XZn90AAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAKSURBVBjTY2gAAACCAIGnAboQAAAAAElFTkSuQmCC';
if (isset($_SERVER['HTTP_REFERER'])) echo base64_decode( $encode_image_png_1x1 ); else echo base64_decode( $encode_image_png_noref );
?>

Si alguien sabe se lo agradezco, saludos

puedes usar html y colocar esto para que que img es:
HTML:
<img src="data:image/png;base64,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">

y quedaria esto:
index-3c30588.png


---------- Post agregado en la hora: 23:07 ---------- Anterior post agregado en la hora: 23:06 ----------

y era necesario encriptarlo? saludos gracias

a ver... de esa manera ahorramos el agregar conjuntamente la imagen como archivo fisico... solo eso. en ves de tener un file llamado pepe.png, colocamos el code en base64 y listo. se usa mucho en CSS
ejemplo google lo usa mucho en sus doodles!
 
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