[Snort-sigs] question on byte_jump

Joel Esler joel.esler at ...435...
Tue Feb 20 01:42:26 EST 2007

The "detection pointer" will be at the end of the previous content match.  Since Byte_jumps are essentially treated as content matches, it will be at the end of the previous jump.


On Tue, Feb 20, 2007 at 03:17:45PM +0900, it looks like Dongwook Kim sent me:
>    Hi,
>    I'm trying to write a rule using byte_jump option.
>    The situation I've encountered is something like below.
>    content:"|00000000|"; byte_jump:4,0,relative;
>    byte_jump:4,0,relative,align;
>    In the second byte_jump above, where the detection pointer will be
>    relative to? Is it the last matched content |00000000| or whatever
>    point using the first byte_jump?
>    D Kim

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joel esler          senior security consultant         1-706-627-2101
         gpg key: http://demo.sourcefire.com/jesler.pgp.key

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