I'm trying to write a custom smb signature to restrict access to certain shares. It's based on Custom App-ID for a specific SMB share
My share pattern is '\\america\credit'. Unfortunately, it didn't work for me and I opened a support case. But they asked me to post the sig. here to verify it first before they look at this further. Can some one please, check the signature ?
<entry name="And Condition 2">
<entry name="Or Condition 1">
<pattern>\x 5c 00 5c 00 61 00 6d 00 65 00 72 00 69 00 63 00 61 00 5c 00 63 00 72 00 65 00 64 00 69 00 74 00\x</pattern>
<comment>string in unicode matches "\\america\credit"</comment>
<description>App-ID to identify and control access to a specific SMB share</description>
I think you want to remove the <or-condition> as that will make the entry contained inside that tag optional. as i read it the signature would fire on all traffic, not just the path you want to match.
Looking at a packet capture, the raw hex stream doesn't include spaces. So yours would be:
I haven't tested this, but it may be worth a shot. I know the article linked shows spaces, but that seems odd to me because the pattern is specifying hex (using \x in front and back). Might be worth trying.
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