I am a beginner , study PHP sometimes , I’ll kown how to find PHP Back Door , Can U Help me ?
It’s can be a tricky task, depending on how backdoor was implemented.
The general idea is to search for files with suspicious code inside.
Such code can contain
exec() and other system functions calls.
It can also use variables as function names to make it harder to find:
$foo = 'e' . 'va' . 'l'; $foo($someEvilCode);
It’s easier to find these files if you have a list of “legal” files and their MD5-sums. Having such list you can compare actual files on your server with that list and find which was added or changed externally.
Are you hacker ? Frequently if a hacker gets access to your website they will install a “backdoor”
No, I’m on the Light side of the Force.
And that’s why topic starter asks about how to find them, I guess
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