[root@id bwsfinder]# ./bwsfinder.pl -m w -t jsp -e -d /var/lib/tomcat6/webapps/ROOT/

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#                                                                              #

#       Bar4mi WebShell Finder Ver.0.5 (Simon Ryeo, bar4mi@gmail.com)          #

#                                                                              #

################################################################################

>>> Directory: /var/lib/tomcat6/webapps/ROOT/

>>> Mode: Find Webshells

>>> Max File Size: <= 100 Bytes

>>> Reading patterns

>>> Reading file list

Reading from /var/lib/tomcat6/webapps/ROOT/WEB-INFbtest

>>> Checking files

[###################]

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 Malicious Files => 1 files

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      jsp File browser:   10 line -> /var/lib/tomcat6/webapps/ROOT/board/zzzz.jsp

                jsp File browser 1.0

>>> Execution Time: 0 secs

https://code.google.com/p/bwsfinder/