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Hacking and Security => Hacking and Security => Topic started by: zohraan on September 06, 2012, 12:14:32 PM

Title: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: zohraan on September 06, 2012, 12:14:32 PM

How to make a Permanent Backdoor in Linux Servers after compromising the target ? Help and thanks advanced for you help ...

Title: Re: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: z3ro on September 06, 2012, 01:22:12 PM

netcat...

Title: Re: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: ca0s on September 06, 2012, 01:22:28 PM

Have you ever heard about rootkits?

Title: Re: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: Daemon on September 06, 2012, 07:15:45 PM

Please, do some more searching before posting a generalized question like that. GOOGLE will be more than happy to give you a ton of results for linux backdoor; 2, 920, 000 results.
Once you have the idea down, and have tried getting it to work on your VM or test comp, then feel free to ask us specific questions about the problems your having. Hacker's (or just computer geeks like me) value independence, so we help those who have already helped themselves.

Hopefully you learn something and find what you need, gl mate.

Title: Re: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: noob on September 09, 2012, 03:53:51 AM

http://evilzone.org/security-tools/trixd00r-v0-0-1-an-invisible-tcpip-based-backdoor-for-unix-systems/msg15228/#msg15228

Title: Re: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: zohraan on September 09, 2012, 09:08:27 PM

Yeah thanks ... :)

Title: Re: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: NeX on September 10, 2012, 11:31:39 PM

It can't be really permanent, but you have few options..
1. Inserting into kernel (recompiling kernel or LKM)
2. Adding to startup
If you use the 1st one, it's more difficult to get detected if you recompile the kernel (unless it's poorly coded, then it'll just oops the kernel XD)
Adding stuff to startup is not a clever idea, because it's like.. really visible XD

If you're interested in doing kernel level stuff you can ask me questions, I've messed with that stuff a bit ;)

Title: Re: How to make a Permanent Backdoor in Linux Servers ? Help
Post by: zohraan on September 11, 2012, 08:34:37 AM

Thanks for coming ... :))

Quote from: NeX on September 10, 2012, 11:31:39 PM

It can't be really permanent, but you have few options..
1. Inserting into kernel (recompiling kernel or LKM)
2. Adding to startup
If you use the 1st one, it's more difficult to get detected if you recompile the kernel (unless it's poorly coded, then it'll just oops the kernel XD)
Adding stuff to startup is not a clever idea, because it's like.. really visible XD

If you're interested in doing kernel level stuff you can ask me questions, I've messed with that stuff a bit ;)