4f529f0683
Found a bug in my base64 converter My base64 conversion script is supposed to find the maximum length string that is guaranteed to be present if the input plain text string is somewhere in the original plain text code, however there was an off by 1 error which made some patterns 1 character longer than they should have been. Short patterns (ie 4 chars) were prone to false positives because they really were 3 character patterns which is too short to be useful. Long patterns were likely missing results. Should be fixed now.
PHP malware scanner
Traversing directories for files with php extensions and testing files against text or regexp rules, the rules based on self gathered samples and publicly vailable malwares/webshells. The goal is to find infected files and fight against kiddies, because to easy to bypass rules.
How to use?
$ php ./scan.php -h
Usage scan.php -d <directory> [-i=<directory|file>] [-e=.php] [--hide-ok] [--hide-whitelist]
-d Directory for searching
-e=.php Extension
-i=<directory|file> Directory of file to igonre
--hide-ok Hide OK aka not infected messages
--hide-whitelist Hide whitelisted messages
--extra-check Adds GoogleBot and htaccess to Scan List
--follow-symlink Follow symlinked directories
Ignore argument could be used multiple times and accept glob style matching ex.: "cache*", "??-cache.php" or "/cache" etc.
Patterns
There are two different pattern source, each line in these files is a patter so patterns_raw.txt lines searched as-is, patterns_re.txt used with preg_match function.
Whitelisting
See whitelist.txt file for a predefined MD5 hash list. Only the first 32 characters are used, rest of the line ignored so feel free to leave a comment.
Resources
- PHPScanner
- PMF - PHP Malware Finder
- check regexp online
- malware samples 1
- malware samples 2
- malware samples 3
- malware samples 4
Licensing
PHP malware scanner is licensed under the GNU General Public License v3.