Webshell and removal Verification

I accidentally saw this source code today. I just went over it. If you say this bad source code, you still encrypt it for domain name verification. If you want to verify it, you will also put a backdoor. How good is this, below is a simple look, there is not much technical content.

It is obvious that there is a $ OOO0O0O00 open this file (obviously, what is the microshield) The following files are encrypted:

One by one, the qq sdk file SNS. php encryption performs domain name verification. You can replace the original version without decryption. By the way, the backdoor file is found in "Funcs. inc. the php file contains one sentence:

Finally, you can use http://tool.lu/php/to decrypt the data. The complete serial search tool is grepwin.