# Regarding pattern matching in bro **URL:** \ **Category:** Zeek\ **Created:** [March 22, 2002, 7:44am UTC](https://community.zeek.org/t/regarding-pattern-matching-in-bro/221 "2002-03-22T07:44:57Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Vern](https://yyz1.discourse-cdn.com/flex011/user_avatar/community.zeek.org/vern/32/630_2.png) [@Vern](https://community.zeek.org/u/Vern)\ **Post date:** [March 22, 2002, 7:44am UTC](https://community.zeek.org/t/regarding-pattern-matching-in-bro/221/1 "2002-03-22T07:44:57Z")
> Is it possible to do a pattern matching using bro scripts > for a hex pattern. > for eg: > "90 31 C0 99 52 52 B017 CD80 68 CC 73 68" > or it supports only pattern matching for strings. What do you mean by a "hex pattern"? You can search for 8-bit regular expressions, e.g. /\x90\x31\xc0\x99/. Bro's regular expressions operate on strings, but strings can contain arbitrary binary data.     Vern ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/zeek/original/1X/f09d732bc2cc7c7cc7e35db67cf4e1d5233ce7a7.png) [@system](https://community.zeek.org/u/system)\ **Post date:** [May 6, 2022, 3:36pm UTC](https://community.zeek.org/t/regarding-pattern-matching-in-bro/221/2 "2022-05-06T15:36:26Z")