![]() ![]() Whenever encoders like php-crypt have to be analysed the task is usually the same. In order to analyse this encoded script I will use my evalhook PHP extension, which is presented in the next section. The code uses base64_decode(), gzinflate() and eval(), a lot of base64 encoded strings, some variable function calls and some non printable characters that will cause problems for anyone loading and saving the file in an editor. $keystroke1 Įval ( $OO000OO000OO ( base64_decode ( 'LdA3sq In order to play around with the crypter I wrote a very simple Hello World script in PHP and let it be encoded by the demo version of the php-crypt online, - 13 ) Because I have yet to see a user space PHP encoding tool that is hard to break I took a quick look into it and present my results here in order to show how useless this type of encrypters is usually. ![]() PHP-Crypt is one of the type one obfuscators/encryptors/encoders that is implemented in PHP user space only. ![]() The first type is usually implemented in PHP user space and the second type requires a PHP extension written in C/C++ that hooks into the Zend Engine and provides an encryption of the executed Zend Engine bytecode. Infact there are two types of PHP encryption systems source code obfuscators/encryptors/encoders and bytecode obfuscators/encryptors/encoders. Therefore the idea behind php-crypt that was announced today in the PHP Development forum of Xing is nothing new. This article was written today by Stefan Esser after having seen an advertisement for php-crypt in the Xing PHP Development Forum.Įvery once in a while a new PHP encryption tool/service pops up and offers PHP “encryption”. Today we present you a short article about how to decode a PHP file encoded with the PHP encoder. ![]()
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