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@Little-Ki
Little-Ki / Base64.ts
Last active September 19, 2023 02:43
[TypeScript] Base64
let Base64 = (function () {
let dic = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
let encode = (array: Int8Array | Uint8Array | number[]) => {
let result = [];
let i = 0;
while (i < array.length) {
let b0 = array[i++];
let b1 = array[i++];
let b2 = array[i++];
@Little-Ki
Little-Ki / [C++ Template] Fixed string ( < c++ 20 ).h
Last active September 18, 2023 03:47
[C++ Template] Fixed string ( < c++ 20 )
template<char ...c>
struct string{
constexpr static size_t N = sizeof...(c) + 1;
constexpr static const char data[N] = { c..., 0 };
};
template<char ...C>
auto make_string(string<C...>) -> string<C...>;
template<char ...C1, char C,char ...C2>
@Little-Ki
Little-Ki / [C++ Template] Make enumrate interval.h
Last active September 18, 2023 03:47
[C++ Template] Make enumrate interval
template<size_t ...args>
struct enumrate_interval_pack {};
template<size_t ...args>
struct enumrate_interval_impl {
using type = enumrate_interval_pack<args...>;
};
template<size_t l, size_t h, size_t ...args>
struct enumrate_interval {
@Little-Ki
Little-Ki / [C++ Template] Calculate hash by type name.hpp
Last active September 18, 2023 03:46
[C++ Template] Calculate hash by type name
#pragma once
template <typename T>
constexpr size_t hash_type()
{
size_t result{};
#ifdef _MSC_VER
#define F __FUNCSIG__
#else
#define F __PRETTY_FUNCTION__
@Little-Ki
Little-Ki / [C++ Template] NP decay.h
Last active September 18, 2023 03:47
[C++ Template] NP decay
#pragma once
#include <type_traits>
template<class _Ty>
struct np_decay_impl {
using _T0 = typename std::conditional_t<std::is_function_v<std::remove_pointer_t<_Ty>>, _Ty, std::remove_reference_t<_Ty>>;
using _T1 = typename std::conditional_t<std::is_function_v<std::remove_pointer_t<_Ty>>, _T0, std::remove_pointer_t<_T0>>;
using _T2 = typename std::conditional_t<std::is_array_v<_T1>, std::remove_extent_t<_T1>, _T1>;
using type = typename std::conditional_t<std::is_function_v<std::remove_pointer_t<_Ty>>, _T2, std::remove_cv_t<_T2>>;
};
@Little-Ki
Little-Ki / IRQL and memory protect
Last active October 25, 2020 07:26
[Code] [Kernel] IRQL, memory protection and memory modify
// To write other's memory in kernel, there has other rules, IRQL and memory protection.
// If you try to write memory when memory protection is enabled, you will get BSOD.
// In order to write other's memory, we should disable memory protection first and upgrade IRQL to level 2 (normally is 0).
// The sign of memory protection state is in CR0 register. So just modify it can change state.
// To change IRQL level, use KeRaiseIrqlToDpcLevel and KeLowerIrql, in 64 bits system, IRQL state stored in CR8 register, in 32 bits mode, it's in KPCR.
// Code:
KIRQL WPOFFx64()
@Little-Ki
Little-Ki / [1] Description
Last active March 13, 2024 12:53
[Code] [Kernel] ObRegisterCallbacks
// The ObRegisterCallbacks routine registers a list of callback routines for thread, process, and desktop handle operations.
// This function is a most public method used by anti cheat / anti virus software.
// Offical document:
// https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-obregistercallbacks
// Function syntax:
// NTSTATUS ObRegisterCallbacks(
// POB_CALLBACK_REGISTRATION CallbackRegistration,
// PVOID *RegistrationHandle
@Little-Ki
Little-Ki / GetNotifyVarAddress
Last active October 25, 2020 03:18
[Code] [Kernel] Bypass process, thread and image load notify routines
// When you tried to create thread in process, the anti cheat will detect it, the one reason is it uses PsSetCreateThreadNotifyRoutine.
// Then ac uses PsSetLoadImageNotifyRoutine to block loading of blacklisted drivers.
// PsSetLoadImageNotifyRoutine is not being used to block DLL injection.
// However, we can bypass both of these notifications by modifying a kernel variable: PspNotifyEnableMask. Why?
// PspCallThreadNotifyRoutines is a kernel function, this function iterating the installed notification routines and calling them.
// By analysis it in IDA, we can find a symbol named PspNotifyEnableMask, just fill it with zero will skip calling of any notification routines.
// But it's not clean way to do it and will also block process creation routines which is not a good thing (any process you start when PsSetCreateProcessNotifyRoutine is bypassed will not have ability to connect to internet).
// By look at function PsSetCreateThreadNotifyRoutine itself, we will see:
@Little-Ki
Little-Ki / SSDT_proxy
Last active October 23, 2020 15:05
[Code] [Kernel] SSDT proxy class
/* SSDT proxy class */
/*
#pragma pack(1)
struct SYSTEM_SERVICE_TABLE {
// This pointer points to an array of int
// In 32 bits mode, this array saves <function's address>.
// In 64 bits mode, this array saves <(function's address - table's address) << 4>.
// So we calculate the function's address by this way:
// In 32 bits mode : function's address = [table's address + 4 * index]
@Little-Ki
Little-Ki / EnumModule
Created October 23, 2020 14:51
[Code] [Kernel] Enum module which in current process
/* Enum module which in current process */
struct Module_t {
ULONG64 base;
ULONG64 size;
std::string name;
}
void EnumModule( std::vector<Module_t> & list )
{