6 replies to this topic

[colinsouth]

Iv made backdoors using server/client .exes, but want to step it up to using a .dll for the server...

Problem is, I dont really know how.

I understand DLLs and making them, obviously, but how do I create a backdoor as one... am i missing something??

PS Using C++, Dev-C++

Thanks for any responce

[AgentSmith15]

Iv made backdoors using server/client .exes, but want to step it up to using a .dll for the server...

Problem is, I dont really know how.

I understand DLLs and making them, obviously, but how do I create a backdoor as one... am i missing something??

PS Using C++, Dev-C++

Thanks for any responce

I think you are getting the wrong idea. First off it obvious you don't know any C++ because if you did you wouldn't be asking. Second, no one is going to code anything for you. Third, you have no idea what a Dll is and they could be used for "back-doors"


I really suggest you start with a simple "Hello World" and go from there.

[colinsouth]

Dont be a prick, I'm not asking anyone to code a single line of code for me.

I've written the DLL injection, and know how to make DLLs.

Im really missing the point though...

Do I make a DLL that just deals with the network stuff, to bypass firewall, to just send the data to client via its host process; or what?

No need for your non constructive post.

[AgentSmith15]

Sorry, the way you worded your first sentence made it sound like "I've made backdoors using client/server exe's." Which sounded like I clicked a few options and made a backdoor.

I've heard of people having problems using GCC created DLLs, so be aware of that.


Try googling "opensc"; third link down

[colinsouth]

Just browsing through the C++ sources there when you send that message

Do I inject the DLL then hook the injected process to use it?!

What goes into the DLL...


I just don't get it... it's probably so obvious once I realise.

[SickO]

Just browsing through the C++ sources there when you send that message

Do I inject the DLL then hook the injected process to use it?!

What goes into the DLL...


I just don't get it... it's probably so obvious once I realise.

I guess there isnt really a difference in win32 executable backdoor vs a dll backdoor. It depends on your needs really. A dll backdoor would be useful if you would want to have some specific overview from a certain program.
For example one might be interested only in victims mIRC client socket connections. So he could inject it via some executable and dll then modifies mirc enough to get itself started everytime mirc is. (Though mirc has some level of protections against things like that)

And by the way, mostly hooks are done with dll's. To hook something in a specific application then you inject a dll into it which has hooks in it to gain control of things. Doesnt seem to me that this subject is that old to you.

[CWarrier]

I'm new to dll injection so i have been reading some articles over CodeProject and some other places. The main(only) purpose of dll injection is to gain trust of a firewall system that may be installed on the victim's pc. If you inject your dll into internet explorer for example, you can communicate with your client/server via http without a problem. because the FW thinks that the process that wants to transfer data over the internet is the legit program i.e IE. i'm doing the same thing with a code cave injection method and i'm including all my functions into my dll and the support functions into the injector exe...like injection the dll, auto start, melting....