The c99 shell script is a very good way to hack a php enable web server. You have to find an unsecure uploader to upload this file to the server. Here i used unsecure uploader means the uploader which can’t check for file extension and allow us to upload our executable scripts to the server.
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This c99 shell allows an attacker to hijack the php enable web server. This script is very user friendly and having very good interface so it is easy to use. You can issue any php command to run on the web server. You can use any of the commands given in the script to run on the web server.