sroettger

IERAE CTF 2024 - Intel CET Bypass Challenge

IERAE CTF had one of the coolest pwn challenges I've done in the while. It was written by hugeh0ge.

Here's the full source:

// gcc chal.c -fno-stack-protector -static -o chal
#include <stdio.h>
#include 

jackullrich

#include <Windows.h>

LONG SingleStepEncryptDecrypt(EXCEPTION_POINTERS* ExceptionInfo);
typedef VOID(__stdcall* Shellcode)();

LPBYTE ShellcodeBuffer;
ULONG_PTR PreviousOffset;
ULONG_PTR CurrentOffset;
ULONGLONG InstructionCount;
DWORD dwOld;

tyranid

Param(
    [Parameter(Mandatory, Position = 0)]
    [string]$HostDrive,
    [Parameter(Mandatory, Position = 1)]
    [string]$LocalDrive
)

# Script to map a host drive inside a Windows Docker Server Container
# You need to be an admin in the container for this to work.
# Use as .\map_host_drive C: X:

mattifestation

filter Expand-DefenderAVSignatureDB {
<#
.SYNOPSIS

Decompresses a Windows Defender AV signature database (.VDM file).

.DESCRIPTION

Expand-DefenderAVSignatureDB extracts a Windows Defender AV signature database (.VDM file). This function was developed by reversing mpengine.dll and with the help of Tavis Ormandy and his LoadLibrary project (https://github.com/taviso/loadlibrary). Note: Currently, "scrambled" databases are not supported although, I have yet to encounter a scrambled database. Thus far, all databases I've encountered are zlib-compressed.

adulau

Introduction

As the Ghidra open source community is growing, trying to document the new projects around Ghidra. Feel free to fork the gist and propose improvements.

CPU support

• New 6502 language module for Ghidra
• Atmel AVR helpers for Ghidra - ATmega328p
• Processor definitions for DMG and CGB in Ghidra - Gameboy CPU (LR35902) (WiP)
• ghidra based disassembly of the x68000's IPL.

mimura1133

#!/bin/bash
# Original : https://raw.githubusercontent.com/Microsoft/linux-vm-tools/master/arch/install-config.sh

###############################################################################
# Update our machine to the latest code if we need to.
#

if [ "$(id -u)" -ne 0 ]; then
    echo 'This script must be run with root privileges' >&2
    exit 1

jeffmcjunkin

MATCH (u:User)-[r:AdminTo|MemberOf*1..]->(c:Computer
RETURN u.name

That’ll return a list of users who have admin rights on at least one system either explicitly or through group membership
---------------

MATCH 
(U:User)-[r:MemberOf|:AdminTo*1..]->(C:Computer)
WITH
U.name as n,

jaredhaight

::
::#######################################################################
::
:: Change file associations to protect against common ransomware attacks
:: Note that if you legitimately use these extensions, like .bat, you will now need to execute them manually from cmd or powershell
:: Alternatively, you can right-click on them and hit 'Run as Administrator' but ensure it's a script you want to run :) 
:: ---------------------
ftype htafile="%SystemRoot%\system32\NOTEPAD.EXE" "%1"
ftype WSHFile="%SystemRoot%\system32\NOTEPAD.EXE" "%1"
ftype batfile="%SystemRoot%\system32\NOTEPAD.EXE" "%1"

HarmJ0y

# PowerView's last major overhaul is detailed here: http://www.harmj0y.net/blog/powershell/make-powerview-great-again/
#   tricks for the 'old' PowerView are at https://gist.github.com/HarmJ0y/3328d954607d71362e3c

# the most up-to-date version of PowerView will always be in the dev branch of PowerSploit:
#   https://github.com/PowerShellMafia/PowerSploit/blob/dev/Recon/PowerView.ps1

# New function naming schema:
#   Verbs:
#       Get : retrieve full raw data sets
#       Find : ‘find’ specific data entries in a data set