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@realoriginal
realoriginal / Entry.c
Created March 29, 2023 16:40
TLDR: How a socks proxy client is written to tunnel connections from a 'teamserver' to an agent.
/*!
*
* RPROXICMP
*
* GuidePoint Security LLC
*
* Threat and Attack Simulation Team
*
!*/
@chhans
chhans / deploy-vm.sh
Last active February 16, 2023 08:30
Create Azure VM rerouting traffic
#!/bin/bash
if [ $# -ne 3 ]; then
echo "No argument supplied. Usage: $0 <name_to_take_over> <zone> <subscription>"
exit
fi
if [ -f "$HOME/.ssh/id_rsa.pub" ]; then
SSH_KEY="$HOME/.ssh/id_rsa.pub"
@tothi
tothi / certifried_with_krbrelayup.md
Last active December 18, 2024 19:47
Certifried combined with KrbRelayUp: non-privileged domain user to Domain Admin without adding/pre-owning computer accounts

Certifried combined with KrbRelayUp

Certifried (CVE-2022-26923) gives Domain Admin from non-privileged user with the requirement adding computer accounts or owning a computer account. Kerberos Relay targeting LDAP and Shadow Credentials gives a non-privileged domain user on a domain-joined machine local admin access on (aka owning) the machine. Combination of these two: non-privileged domain user escalating to Domain Admin without the requirement adding/owning computer accounts.

The attack below uses only Windows (no Linux tools interacting with the Domain), simulating a real-world attack scenario.

Prerequisites:

@CCob
CCob / patchless_amsi.h
Created April 17, 2022 16:18
In-Process Patchless AMSI Bypass
#ifndef PATCHLESS_AMSI_H
#define PATCHLESS_AMSI_H
#include <windows.h>
static const int AMSI_RESULT_CLEAN = 0;
PVOID g_amsiScanBufferPtr = nullptr;
unsigned long long setBits(unsigned long long dw, int lowBit, int bits, unsigned long long newValue) {
@jackullrich
jackullrich / mainc.c
Last active November 3, 2023 17:20
Single Step Encryption/Decryption
#include <Windows.h>
LONG SingleStepEncryptDecrypt(EXCEPTION_POINTERS* ExceptionInfo);
typedef VOID(__stdcall* Shellcode)();
LPBYTE ShellcodeBuffer;
ULONG_PTR PreviousOffset;
ULONG_PTR CurrentOffset;
ULONGLONG InstructionCount;
DWORD dwOld;
@EvanMcBroom
EvanMcBroom / no_strings.hpp
Last active November 3, 2024 03:43
Encrypt Strings at Compile Time
// Copyright (C) 2022 Evan McBroom
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
@gladiatx0r
gladiatx0r / Workstation-Takeover.md
Last active March 17, 2025 03:05
From RPC to RCE - Workstation Takeover via RBCD and MS-RPChoose-Your-Own-Adventure

Overview

In the default configuration of Active Directory, it is possible to remotely take over Workstations (Windows 7/10/11) and possibly servers (if Desktop Experience is installed) when their WebClient service is running. This is accomplished in short by;

  • Triggering machine authentication over HTTP via either MS-RPRN or MS-EFSRPC (as demonstrated by @tifkin_). This requires a set of credentials for the RPC call.
  • Relaying that machine authentication to LDAPS for configuring RBCD
  • RBCD takeover

The caveat to this is that the WebClient service does not automatically start at boot. However, if the WebClient service has been triggered to start on a workstation (for example, via some SharePoint interactions), you can remotely take over that system. In addition, there are several ways to coerce the WebClient service to start remotely which I cover in a section below.

@ajpc500
ajpc500 / log-forwarding-with-etw.ps1
Last active June 29, 2023 01:31
Quick-and-dirty PowerShell script to install Sysmon (SwiftOnSecurity config), SilkService and Winlogbeat, and forward logs to HELK based on IP set in environment variable "HELK_IP" (see Line 224).
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
$wc = New-Object System.Net.WebClient
if (!(Test-Path "C:\Tools")) {
New-Item -Path "C:\" -Name "Tools" -ItemType "directory"
}
# SYSMON
# Download Sysmon
$SysmonDirectory = "C:\Tools\Sysmon\"
@theevilbit
theevilbit / divide_and_conquer.c
Created January 17, 2021 15:11
Divide and Conquer NextGen AV bypass
/*
This is a POC for a generic technique I called internally on our red team assessment "Divide and Conquer", which can be used to bypass behavioral based NextGen AV detection. It works by splitting malicious actions and API calls into distinct processes.
*/
#include <stdio.h>
#include <tchar.h>
#include <windows.h>
#include "Commctrl.h"
#include <string>
@lrvick
lrvick / github-troll.md
Last active April 1, 2025 08:14
Trolling Github's DMCA repo with their own security flaws.