Re: Snort -Problem with rule -

[강명훈 <mhkang589 () gmail com>]

PCRE tries to check strings 'or+1=1'. Does strings 'or+(one or more)'
actually exist in the packet?

2017-05-01 11:19 GMT+09:00 Al Lewis (allewi) <allewi () cisco com>:

> Replay the pcap file into snort with the -r option.
>
> Check the manual for more info. http://manual-snort-org.s3-
> website-us-east-1.amazonaws.com/node8.html
>
>
>
> Albert Lewis
> ENGINEER.SOFTWARE ENGINEERING
> SOURCEfire, Inc. now part of Cisco
> Email: allewi () cisco com<mailto:allewi () cisco com>
>
> From: Joe Bowes <joebowes50 () yahoo com<mailto:joebowes50 () yahoo com>>
> Reply-To: "joebowes50 () yahoo com<mailto:joebowes50 () yahoo com>" <
> joebowes50 () yahoo com<mailto:joebowes50 () yahoo com>>
> Date: Sunday, April 30, 2017 at 7:38 PM
> To: allewi <allewi () cisco com<mailto:allewi () cisco com>>, "
> younes.abderrahmane31 () gmail com<mailto:younes.abderrahmane31 () gmail com>" <
> younes.abderrahmane31 () gmail com<mailto:younes.abderrahmane31 () gmail com>>,
> 'snort-users' <snort-users () lists sourceforge net<mailto:snort-
> users () lists sourceforge net>>
> Subject: Re: [Snort-users] Snort -Problem with rule -
>
> Hello.....i am working on a class assignment.....having a hard
> time....need to learn how to export packets from wireshark into
> Snort.....any help greatly appreciated.
>
> Sent from Yahoo Mail on Android<https://overview.mail.
> yahoo.com/mobile/?.src=Android>
>
> On Sun, Apr 30, 2017 at 4:26 PM, Al Lewis (allewi)
> <allewi () cisco com<mailto:allewi () cisco com>> wrote:
> Hello,
>
>     It may be easier to get help if you included a pcap of the traffic.
>
> Thanks.
>
> Albert Lewis
> ENGINEER.SOFTWARE ENGINEERING
> SOURCEfire, Inc. now part of Cisco
> Email: allewi () cisco com<mailto:allewi () cisco com>
>
>
>
>
>
>
>
>
> On 4/28/17, 9:05 PM, "younes.abderrahmane31 () gmail com<mailto:younes.
> abderrahmane31 () gmail com>" <younes.abderrahmane31 () gmail com<mailto:younes.
> abderrahmane31 () gmail com>> wrote:
>
> > Hello everyone
> > I am trying to test SQLI with a snort
> > I have two machines:
> > 1- Where I installedSNORT, and the application dvwa (to test sql
> injection)
> > 2- The machine which is going to make the attack Sqli injection on the
> dvwa application
> > So in the first machine I added this rule (in local.rule), To detect Sqli
> > (https://www.linkedin.com/pulse/detecting-sql-
> injections-real-time-mission-impossible-val-smirnov)
> > ************************************************************
> > alert tcp any any -> any any (msg:"SQL 1 = 1 - possible sql injection
> attempt"; flow:to_server,established; content:"1%3D1"; fast_pattern:only;
> http_client_body; pcre:"/or\++1%3D1/Pi"; metadata:policy balanced-ips drop,
> policy security-ips drop, service http; reference:url,ferruh.mavituna.
> com/sql-injection-cheatsheet-oku/; classtype:web-application-attack;
> sid:10000002; rev:002;)
> > **************************************************************
> >
> > And after the test
> > sudo snort -T -c /etc/snort/snort.conf -i eth0
> > sudo snort -A console -c /etc/snort/snort.conf -i eth0
> > Snort detect nothing (for  exemple ‘1or1=1#)
> >
> > But when I deleted the part pcre of the rule, snort detect it
> > ***********************************************************
> ***********************************
> > alert tcp any any -> any any (msg:"SQL 1 = 1 - possible sql injection
> attempt"; flow:to_server,established; content:"1%3D1"; sid:10000002;
> rev:002;)
> > ***********************************************************
> ************************************
> > Someone can help me, why the first rule does not work  (pcre )
> > Thank's.
> >
> >
> > Sent from Mail for Windows 10
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