Php deobfuscator online code#
Now looking at this code it now starting to make a bit more sense. We know that ‘l94b537e’ is refers to the alphabet so I have replaced that with alph. We know that $GLOBALS = $GLOBALS so I have replaced all instances of this in the table also. With the use of the alphabet created from the array we need to look at the first section of code and repeat with each section. You may want to take a look at the Sample-GLOBALS which has the Sample file with all the variables converted to $GLOBALS required in order to run the script alphabet key script. If you use the above tool it will help cut down the time spent by creating the list of variables required to be further used for find and replace iteration.
Php deobfuscator online how to#
This shows you how to do it without the tool. Depending on what version you use you may need to still do an iteration of find and replace with the now viewable variables defined at the start of the code.įor the purpose of the tutorial and so you can understand what is happening under the hood I will show how to progress manually with the find and the replace. I have then built upon this to create Alphabet Soup to take in a webshell PHP file, de-obfuscates and outputs a text file where everything has been de-obfuscated and ready for viewing in its altered state. It’s called Alphabet Key and will print to console the numbers replaced by letters. This takes a lot of pain away from the process.
![php deobfuscator online php deobfuscator online](https://labs.detectify.com/wp-content/uploads/2019/05/PHP_Webshell_Deobfuscation_Tutorial_-_Google_Docs.png)
The fantastic helped me put together a python script which takes the hex and replaces our alphabet correctly to the right numbered variable. To help aid you through to de-obfuscation process and save you time I have created a script which automates for this malware family.Īutomated Method – Variable Names Alphabet Soup Script! – Python
Php deobfuscator online update#
So, what you can do now is manually go through the script and update each number with its corresponding letter or you can write a script to help! Manually de-obfuscating is a simple process but can be a time intensive. We now have our alphabet coming together and corresponding number. Sidenote – I had to do some basic tinkering adding quotation marks for it to work. I wrote a very basic PHP script which just printed out the values of each hex value given in the array as ASCII values and give it an index. I would need to do a string replace, so for every number it would look up the corresponding character. $GLOBALS is used more than once within the AW%XH\xdP3r " It’s normally only used in special circumstances so if you do see it appear in code it might warrant further investigation. If you would like to know more about GLOBALS you can find out more information in this video here Different superglobals in PHPīasically, it is being used so it can interact with a predefined variable which is defined outside of the scope of the function. GLOBALS is used within PHP for specific reasons.
![php deobfuscator online php deobfuscator online](https://miloserdov.org/wp-content/uploads/2020/05/obfuscated-javascript.png)
We can see that $GLOBALS is an Array () on the next line tf7ebf is defined as a global variable, then it states $GLOBALS being the value of $tf7ebf. As well as some other pieces of key information I will get to later.
![php deobfuscator online php deobfuscator online](https://maggick.fr/media/2020.01/bitlab_4.png)
We can do this via Php BeautifierĪs you can see in the picture the structure of the code is now quite prominent. Un-minify the codeįirst, we need to try and make the code more understandable, well at least so it was readable to a degree, it was horrendous in its current form. I have uploaded a sample to my Github repository where you can use to follow along. This tutorial will cover the malware know as: hexedglobals.3793 | Kidslug | php.obfuscated! | .003 | .004 DeObfuscation Tutorial for the $GLOBALS family of malware.In this article I will be covering the following:
![php deobfuscator online php deobfuscator online](https://miloserdov.org/wp-content/uploads/2020/05/javascript-firefox-2.png)
I’ve written a detailed report on the research and analysis process for the PHP Web Shell Hexedglobals.3793 variants, while this post is a how-to tutorial on the de-obfuscation. I would like to introduce you to some obfuscated malicious PHP files that I had recently found on a WordPress website.