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PHP Hex Shell
PHP Hex Shell is a cleverly obfuscated PHP backdoor that hackers and security professionals use quite often. The main trick is that it converts almost all its code into hexadecimal characters. When you open the file, it just looks like a huge messy string of hex values instead of normal PHP code. This helps it sneak past antivirus programs and web application firewalls.
Here's how it works: Once uploaded to the server, the shell decodes itself using functions like hex2bin(), pack('H*'), or eval(). After decoding, the real shell activates. From there, you can run system commands, upload or download files, browse directories, edit files, and even connect to databases.
Many of these are hex versions of popular shells like c99 or r57. Penetration testers use them during authorized security assessments, but unfortunately, malicious hackers also drop them on compromised websites to maintain persistent access.
In short, it's a very effective tool but also quite dangerous. If you're testing it on your own server, be careful. Using it without permission on someone else's system is illegal in most places. This info is shared for educational and defensive security purposes only.
Here's how it works: Once uploaded to the server, the shell decodes itself using functions like hex2bin(), pack('H*'), or eval(). After decoding, the real shell activates. From there, you can run system commands, upload or download files, browse directories, edit files, and even connect to databases.
Many of these are hex versions of popular shells like c99 or r57. Penetration testers use them during authorized security assessments, but unfortunately, malicious hackers also drop them on compromised websites to maintain persistent access.
In short, it's a very effective tool but also quite dangerous. If you're testing it on your own server, be careful. Using it without permission on someone else's system is illegal in most places. This info is shared for educational and defensive security purposes only.
