bats3c’s gists

bats3c / fake_image_loads.c

Created June 14, 2021 13:37

	#include <stdio.h>
	#include <windows.h>
	#include <winternl.h>

	#define DLL_TO_FAKE_LOAD L"\\??\\C:\\windows\\system32\\calc.exe"

	BOOL FakeImageLoad()
	{
	HANDLE hFile;
	SIZE_T stSize = 0;

bats3c / yara_scan_mem.c

Created September 4, 2020 16:22

Yara Scan Memory

	INT ToReportOrNotToReportThatIsTheQuestion( YR_SCAN_CONTEXT* Context,
	INT Message,
	PVOID pMessageData,
	PVOID pUserData
	)
	{
	if (Message == CALLBACK_MSG_RULE_MATCHING)
	{
	((int)pUserData) = 1;
	}

bats3c / yara_setup_rules.c

Created September 4, 2020 16:15

Basic Yara Usage

	#define RULE_ALLOW_ALL "rule Allow { condition: false }"

	YRInitalize();

	RtlCopyMemory(cRule, RULE_ALLOW_ALL, strlen(RULE_ALLOW_ALL));

	if (YRCompilerCreate(&yrCompiler) != ERROR_SUCCESS)
	{
	return -1;
	}

bats3c / restore_callback.c

Created September 4, 2020 15:32

Restore the callback so we can report an event, then rehook it

	typedef VOID(WINAPI * EtwEventCallback_) (EVENT_RECORD *EventRecord);

	VOID DoOriginalEtwCallback( EVENT_RECORD *EventRecord )
	{
	DWORD dwOldProtect;

	VirtualProtect(lpCallbackOffset, sizeof(OriginalBytes), PAGE_EXECUTE_READWRITE, &dwOldProtect);
	memcpy(lpCallbackOffset, OriginalBytes, sizeof(OriginalBytes));
	VirtualProtect(lpCallbackOffset, sizeof(OriginalBytes), dwOldProtect, &dwOldProtect);

bats3c / hook_etw_callback.c

Created September 4, 2020 15:12

Hook The ETW Callback

	VOID HookEtwCallback()
	{
	DWORD oldProtect, oldOldProtect;

	unsigned char boing[] = { 0x49, 0xbb, 0xde, 0xad, 0xc0, 0xde, 0xde, 0xad, 0xc0, 0xde, 0x41, 0xff, 0xe3 };

	(void *)(boing + 2) = &EtwCallbackHook;

	VirtualProtect(lpCallbackOffset, 13, PAGE_EXECUTE_READWRITE, &oldProtect);
	memcpy(lpCallbackOffset, boing, sizeof(boing));

bats3c / pattern_search_etwcallback.c

Last active September 4, 2020 14:42

Pattern search for the ETW callback

	#define PATTERN "\x48\x83\xec\x38\x4c\x8b\x0d"

	DWORD i;
	LPVOID lpCallbackOffset;

	for (i = 0; i < 0xfffff; i++)
	{
	if (!memcmp((PVOID)(dwBase + i), (unsigned char*)PATTERN, strlen(PATTERN)))
	{
	lpCallbackOffset = (LPVOID)(dwBase + i);

bats3c / locate_wevtsvc_base_address.c

Last active September 4, 2020 14:32

Locate the base address of wevtsvc.dll

	DWORD_PTR dwBase;
	DWORD i, dwSizeNeeded;
	HMODULE hModules[102400];
	TCHAR szModule[MAX_PATH];

	if (EnumProcessModules(GetCurrentProcess(), hModules, sizeof(hModules), &dwSizeNeeded))
	{
	for (int i = 0; i < (dwSizeNeeded / sizeof(HMODULE)); i++)
	{
	ZeroMemory((PVOID)szModule, MAX_PATH);

bats3c / syscall_dropper.c

Created August 11, 2020 16:59

bats3c / ldrloaddll_hook.c

Last active January 11, 2025 07:19

Hook LdrLoadDll to whitelist DLLs being loaded into a process

	#include <stdio.h>
	#include <windows.h>
	#include <winternl.h>

	#define dwAllowDllCount 1
	CHAR cAllowDlls[dwAllowDllCount][MAX_PATH] = {
	"W:\\allowed.dll"
	};

	VOID HookLoadDll(LPVOID lpAddr);

bats3c / simple_dll_injection.c

Created August 7, 2020 01:04

	VOID InjectDll(DWORD dwPid, LPCVOID lpDllPath)
	{
	LPVOID lpBuffer;
	HANDLE hProcess, hThread;

	hProcess = OpenProcess(PROCESS_ALL_ACCESS, 0, dwPid);
	if (!hProcess)
	{
	return;
	}

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