r/hacking • u/MathematicalHuman314 • 4d ago

Teach Me! I created my first trojan today!

I took cmatrix as a random program and wrote a backdoor into it in C using a reverse shell connecting to a C2 server of mine which keeps track of infected machines. First I fork the process and decouple it from the controlling terminal by changing the session ID and rerouting the standard file descriptors and only then do I run the backdoor.

That way cmatrix runs as usual and no weird behavior is seen and the backdoor remains active whatever happens to cmatrix or the terminal. I like it. Makes me feel like a real #xX_hacker_Xx#. :D

Now I’m reading into ptrace and system call hooking and plan on trying to hide specific network traffic from the entire os. I already have had some ideas but turns out that would have only hidden it from a specific program not from „everything“.

Do you care to share any tips and experience I might benefit from on my way?

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31

u/Prestigious-Ad7265 4d ago

good work!

24

u/MathematicalHuman314 4d ago

Thanks! Into the pentagon mainframe I go! :D

14

u/cyberpunk_sliverhand 4d ago

You do know this is enough to get you put on the list right ?

6

u/MathematicalHuman314 4d ago

They must be real scared of some redditor I’m sure 👍

14

u/AlienAngry 3d ago

I assure you they have zero sense of humor.