ChoiSG

using System;
using DInvoke;
using System.Diagnostics;
using System.Runtime.InteropServices;
using DynamicInvoke = DInvoke.DynamicInvoke;
using Data = DInvoke.Data;

namespace dinvokeSyscall
{
    class Program

milo2012

function Get-System {
<#
.SYNOPSIS

GetSystem functionality inspired by Meterpreter's getsystem.

Author: Will Schroeder (@harmj0y), Matthew Graeber (@mattifestation)  
License: BSD 3-Clause  
Required Dependencies: PSReflect  

med0x2e

Steps:

1- apt-get install mono-complete     
2- apt-get install wine winetricks -y
3- winetricks dotnet35  
4- winetricks dotnet48 
5- dpkg --add-architecture i386 && apt-get update && apt-get install wine32
6- rm -Rf ~/.wine
7- WINEPREFIX=~/.wine32 WINEARCH=win32 wineboot
8- wine GadgetToJScript.NET3.5.exe -r -c helloworld.cs -d System.Windows.Forms.dll -w hta -o hello

rvrsh3ll

using System;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;

namespace DinjectorWithQUserAPC
{


    public class Program

Frycos

TLDR

Cisco Security Manager is an enterprise-class security management application that provides insight into and control of Cisco security and network devices. Cisco Security Manager offers comprehensive security management (configuration and event management) across a wide range of Cisco security appliances, including Cisco ASA Adaptive Security Appliances, Cisco IPS Series Sensor Appliances, Cisco Integrated Services Routers (ISRs), Cisco Firewall Services Modules (FWSMs), Cisco Catalyst, Cisco Switches and many more. Cisco Security Manager allows you to manage networks of all sizes efficiently-from small networks to large networks consisting of hundreds of devices.

Several pre-auth vulnerabilities were submitted to Cisco on 2020-07-13 and (according to Cisco) patched in version 4.22 on 2020-11-10. Release notes didn't state anything about the vulnerabilities, security advisories were not published. All payload are processed in the context of NT AUTHORITY\SYSTEM.

byt3bl33d3r

This is a variation of the technique originally discovered by subtee and described here

TL;DR It essentially allows you to turn any .NET application into a lolbin by providing a configuration file and specifying the <appDomainManagerAssembly> element pointing to a specially crafted .NET assembly which executes when the application is loaded.

This variation allows you to load the AppDomainManager assembly from a UNC path or HTTP(s) server. Also disables ETW thanks to the <etwEnable> element :)

1. Copy some binary you love to say, C:\Test. Lets use aspnet_compiler.exe as an example
2. Compile test.cs to test.dll with a signed strong name, this is required to load an assembly outside of a .NET applications base directory.
3. Host test.dll on a remote SMB or HTTP(S) server

Arno0x

/*
Author: Arno0x0x, Twitter: @Arno0x0x
Completely based on @Flangvik netloader

This partial rewrite of @Flangvik Netloader includes the following changes:

	- Allow loading of an XOR encrypted binary to bypass antiviruses
		To encrypt the initial binary you can use my Python transformFile.py script.
		Example: ./transformFile.py -e xor -k mightyduck -i Rubeus.bin -o Rubeus.xor
		

xpn

// A very rough x64 POC for spoofing environment variables similar to argument spoofing with a focus on
// setting the COMPlus_ETWEnabled=0 var for disabling ETW in .NET.
//
// Works by launching the target process suspended, reading PEB, updates the ptr used to store environment variables,
// and then resuming the process.
//
// (https://blog.xpnsec.com/hiding-your-dotnet-complus-etwenabled/)

#define INJECT_PARAM L"COMPlus_ETWEnabled=0\0\0\0"
#define INJECT_PARAM_LEN 43

Cyb3rWard0g

Initial Notes:

• The .NET Runtime Event Provider requires setting COMPLUS_ETWEnabled=1 in your process' environment.
• CLRConfig will look for configurations in the following places in the following order:
  • Look at environment variables (prepending COMPlus_ to the name)
  • Look at the framework registry keys (HKCU\Software\Microsoft\.NETFramework
  • Look at the framework registry keys HKLM\Software\Microsoft\.NETFramework)
• These can be set in the following ways:
  • Setting the environment variable COMPlus_:
• Windows

rvrsh3ll

using System;
using System.IO;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Net;
using System.IO.Compression;

    public class Payload
    {