port new code from other projects, minor fixes, bump ver

appveyor.yml

@@ -1,4 +1,4 @@
-version: 0.7.1.{build}
+version: 0.7.2.{build}
 skip_commits:
   files:
     - README.md

wufuc/core.h

@@ -1,16 +0,0 @@
-#pragma once
-
-DWORD WINAPI NewThreadProc(LPVOID lpParam);
-BOOL PatchWU(HMODULE hModule);
-
-HMODULE WINAPI _LoadLibraryExA(
-    _In_       LPCSTR  lpFileName,
-    _Reserved_ HANDLE  hFile,
-    _In_       DWORD   dwFlags
-);
-
-HMODULE WINAPI _LoadLibraryExW(
-    _In_       LPCWSTR lpFileName,
-    _Reserved_ HANDLE  hFile,
-    _In_       DWORD   dwFlags
-);

wufuc/dllmain.c

@@ -1,20 +1,23 @@
 #include <Windows.h>
-#include "core.h"
+
-#include "util.h"
+#include "helpers.h"
+#include "logging.h"
+#include "hooks.h"
 
 BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
     switch (ul_reason_for_call) {
     case DLL_PROCESS_ATTACH:
     {
-        if (!IsOperatingSystemSupported() || IsWow64()) {
+        if (!IsOperatingSystemSupported() || IsWow64())
             return FALSE;
-        }
+        
         DisableThreadLibraryCalls(hModule);
         HANDLE hThread = CreateThread(NULL, 0, NewThreadProc, NULL, 0, NULL);
         CloseHandle(hThread);
         break;
     }
     case DLL_PROCESS_DETACH:
+        logging_free();
         break;
     default:
         break;

wufuc/helpers.c

@@ -0,0 +1,120 @@
+#include <Windows.h>
+#include <stdint.h>
+#include <tchar.h>
+#include <TlHelp32.h>
+#include <Psapi.h>
+
+#include "logging.h"
+#include "helpers.h"
+
+static BOOL m_checkedIsWindows7 = FALSE;
+static BOOL m_isWindows7 = FALSE;
+static BOOL m_checkedIsWindows8Point1 = FALSE;
+static BOOL m_isWindows8Point1 = FALSE;
+
+static ISWOW64PROCESS fpIsWow64Process = NULL;
+static BOOL m_checkedIsWow64 = FALSE;
+static BOOL m_isWow64 = FALSE;
+
+static TCHAR m_emod_basename[MAX_PATH];
+
+BOOL CompareWindowsVersion(BYTE Operator, DWORD dwMajorVersion, DWORD dwMinorVersion, WORD wServicePackMajor, WORD wServicePackMinor, DWORD dwTypeMask) {
+    OSVERSIONINFOEX osvi;
+    ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
+    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
+    osvi.dwMajorVersion = dwMajorVersion;
+    osvi.dwMinorVersion = dwMinorVersion;
+    osvi.wServicePackMajor = wServicePackMajor;
+    osvi.wServicePackMinor = wServicePackMinor;
+
+    DWORDLONG dwlConditionMask = 0;
+    VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, Operator);
+    VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION, Operator);
+    VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, Operator);
+    VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMINOR, Operator);
+
+    return VerifyVersionInfo(&osvi, dwTypeMask, dwlConditionMask);
+}
+
+BOOL IsWindows7(void) {
+    if (!m_checkedIsWindows7) {
+        m_isWindows7 = CompareWindowsVersion(VER_EQUAL, 6, 1, 0, 0, VER_MAJORVERSION | VER_MINORVERSION);
+        m_checkedIsWindows7 = TRUE;
+    }
+    return m_isWindows7;
+}
+
+BOOL IsWindows8Point1(void) {
+    if (!m_checkedIsWindows8Point1) {
+        m_isWindows8Point1 = CompareWindowsVersion(VER_EQUAL, 6, 3, 0, 0, VER_MAJORVERSION | VER_MINORVERSION);
+        m_checkedIsWindows8Point1 = TRUE;
+    }
+    return m_isWindows8Point1;
+}
+
+BOOL IsOperatingSystemSupported(void) {
+#if !defined(_AMD64_) && !defined(_X86_)
+    return FALSE;
+#else
+    return IsWindows7() || IsWindows8Point1();
+#endif
+}
+
+BOOL IsWow64(void) {
+    if (!m_checkedIsWow64) {
+        if (!fpIsWow64Process)
+            fpIsWow64Process = (ISWOW64PROCESS)GetProcAddress(GetModuleHandle(_T("kernel32.dll")), "IsWow64Process");
+        
+        if (fpIsWow64Process && fpIsWow64Process(GetCurrentProcess(), &m_isWow64))
+            m_checkedIsWow64 = TRUE;
+    }
+    return m_isWow64;
+}
+
+VOID suspend_other_threads(DWORD dwProcessId, DWORD dwThreadId, HANDLE *lphThreads, SIZE_T dwSize, SIZE_T *lpcb) {
+    HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
+    THREADENTRY32 te;
+    ZeroMemory(&te, sizeof(THREADENTRY32));
+    te.dwSize = sizeof(te);
+    Thread32First(hSnap, &te);
+
+    SIZE_T count = 0;
+
+    do {
+        if (te.th32OwnerProcessID != dwProcessId || te.th32ThreadID == dwThreadId)
+            continue;
+        
+        lphThreads[count] = OpenThread(THREAD_SUSPEND_RESUME, FALSE, te.th32ThreadID);
+        SuspendThread(lphThreads[count]);
+        count++;
+    } while (count < dwSize && Thread32Next(hSnap, &te));
+    CloseHandle(hSnap);
+
+    *lpcb = count;
+    trace(L"Suspended %d other threads", count);
+}
+
+VOID resume_and_close_threads(LPHANDLE lphThreads, SIZE_T cb) {
+    for (SIZE_T i = 0; i < cb; i++) {
+        ResumeThread(lphThreads[i]);
+        CloseHandle(lphThreads[i]);
+    }
+    trace(L"Resumed %d threads", cb);
+}
+
+void get_cpuid_brand(char *brand) {
+    int info[4];
+    __cpuidex(info, 0x80000000, 0);
+    if (info[0] < 0x80000004) {
+        brand[0] = '\0';
+        return;
+    }
+    uint32_t *char_as_int = (uint32_t *)brand;
+    for (int op = 0x80000002; op <= 0x80000004; op++) {
+        __cpuidex(info, op, 0);
+        *(char_as_int++) = info[0];
+        *(char_as_int++) = info[1];
+        *(char_as_int++) = info[2];
+        *(char_as_int++) = info[3];
+    }
+}

wufuc/helpers.h

@@ -0,0 +1,19 @@
+#pragma once
+
+EXTERN_C IMAGE_DOS_HEADER __ImageBase;
+#define HINST_THISCOMPONENT ((HINSTANCE)&__ImageBase)
+
+typedef BOOL(WINAPI *ISWOW64PROCESS)(HANDLE, PBOOL);
+
+BOOL CompareWindowsVersion(BYTE Operator, DWORD dwMajorVersion, DWORD dwMinorVersion, WORD wServicePackMajor, WORD wServicePackMinor, DWORD dwTypeMask);
+BOOL IsWindows7(void);
+BOOL IsWindows8Point1(void);
+BOOL IsOperatingSystemSupported(void);
+BOOL IsWow64(void);
+
+VOID suspend_other_threads(DWORD dwProcessId, DWORD dwThreadId, HANDLE *lphThreads, SIZE_T dwSize, SIZE_T *lpcb);
+VOID resume_and_close_threads(LPHANDLE lphThreads, SIZE_T dwSize);
+
+void get_cpuid_brand(char *brand);
+#define STRINGIZE_(x) #x
+#define STRINGIZE(x) STRINGIZE_(x)

wufuc/hooks.c

@@ -3,10 +3,16 @@
 #include <tchar.h>
 #include <Psapi.h>
 #include <sddl.h>
+
+#include "helpers.h"
+#include "logging.h"
 #include "service.h"
+#include "iathook.h"
 #include "patternfind.h"
-#include "util.h"
+#include "hooks.h"
-#include "core.h"
+
+LOADLIBRARYEXW fpLoadLibraryExW = NULL;
+LOADLIBRARYEXA fpLoadLibraryExA = NULL;
 
 DWORD WINAPI NewThreadProc(LPVOID lpParam) {
     SC_HANDLE hSCManager = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT);
@@ -15,63 +21,85 @@ DWORD WINAPI NewThreadProc(LPVOID lpParam) {
     get_svcpath(hSCManager, _T("wuauserv"), lpBinaryPathName, _countof(lpBinaryPathName));
     CloseServiceHandle(hSCManager);
 
-    BOOL result = _tcsicmp(GetCommandLine(), lpBinaryPathName);
+    if (_tcsicmp(GetCommandLine(), lpBinaryPathName))
-
-    if (result) {
         return 0;
-    }
 
-    SECURITY_ATTRIBUTES sa;
+    SECURITY_ATTRIBUTES sa = { 0 };
-    ZeroMemory(&sa, sizeof(SECURITY_ATTRIBUTES));
     sa.nLength = sizeof(SECURITY_ATTRIBUTES);
     ConvertStringSecurityDescriptorToSecurityDescriptor(_T("D:PAI(A;;FA;;;BA)"), SDDL_REVISION_1, &sa.lpSecurityDescriptor, NULL);
     sa.bInheritHandle = FALSE;
 
     HANDLE hEvent = CreateEvent(&sa, TRUE, FALSE, _T("Global\\wufuc_UnloadEvent"));
-
+    if (!hEvent)
-    if (!hEvent) {
         return 0;
-    }
 
     DWORD dwProcessId = GetCurrentProcessId();
     DWORD dwThreadId = GetCurrentThreadId();
     HANDLE lphThreads[0x1000];
-    SIZE_T cb;
+    SIZE_T count;
 
-    SuspendProcessThreads(dwProcessId, dwThreadId, lphThreads, _countof(lphThreads), &cb);
+    suspend_other_threads(dwProcessId, dwThreadId, lphThreads, _countof(lphThreads), &count);
 
     HMODULE hm = GetModuleHandle(NULL);
-    DETOUR_IAT(hm, LoadLibraryExA);
+    iat_hook(hm, "LoadLibraryExA", (LPVOID)&fpLoadLibraryExA, LoadLibraryExA_hook);
-    DETOUR_IAT(hm, LoadLibraryExW);
+    iat_hook(hm, "LoadLibraryExW", (LPVOID)&fpLoadLibraryExW, LoadLibraryExW_hook);
 
     HMODULE hwu = GetModuleHandle(get_wuauservdll());
-    if (hwu && PatchWU(hwu)) {
+    if (hwu && PatchWUA(hwu))
-        dwprintf(L"Patched previously loaded Windows Update module!");
+        trace(L"Successfully patched previously loaded WUA module!");
-    }
+    
-    ResumeAndCloseThreads(lphThreads, cb);
+    resume_and_close_threads(lphThreads, count);
 
     WaitForSingleObject(hEvent, INFINITE);
+    trace(L"Unloading...");
 
-    dwprintf(L"Unloading...");
+    suspend_other_threads(dwProcessId, dwThreadId, lphThreads, _countof(lphThreads), &count);
 
-    SuspendProcessThreads(dwProcessId, dwThreadId, lphThreads, _countof(lphThreads), &cb);
+    iat_hook(hm, "LoadLibraryExA", NULL, fpLoadLibraryExA);
-    RESTORE_IAT(hm, LoadLibraryExA);
+    iat_hook(hm, "LoadLibraryExW", NULL, fpLoadLibraryExW);
-    RESTORE_IAT(hm, LoadLibraryExW);
-    ResumeAndCloseThreads(lphThreads, cb);
 
+    resume_and_close_threads(lphThreads, count);
+
+    trace(L"Bye bye!");
     CloseHandle(hEvent);
-    dwprintf(L"Bye bye!");
-    close_log();
     FreeLibraryAndExitThread(HINST_THISCOMPONENT, 0);
 }
 
-BOOL PatchWU(HMODULE hModule) {
+HMODULE WINAPI LoadLibraryExA_hook(
+    _In_       LPCSTR  lpFileName,
+    _Reserved_ HANDLE  hFile,
+    _In_       DWORD   dwFlags
+) {
+    HMODULE result = LoadLibraryExA(lpFileName, hFile, dwFlags);
+    if (result) {
+        trace(L"Loaded library: %S", lpFileName);
+        if (!_stricmp(lpFileName, get_wuauservdllA()) && PatchWUA(result))
+            trace(L"Successfully patched WUA module!");
+    }
+    return result;
+}
+
+HMODULE WINAPI LoadLibraryExW_hook(
+    _In_       LPCWSTR lpFileName,
+    _Reserved_ HANDLE  hFile,
+    _In_       DWORD   dwFlags
+) {
+    HMODULE result = LoadLibraryExW(lpFileName, hFile, dwFlags);
+    if (result) {
+        trace(L"Loaded library: %s", lpFileName);
+        if (!_wcsicmp(lpFileName, get_wuauservdllW()) && PatchWUA(result))
+            trace(L"Successfully patched WUA module!");
+    }
+    return result;
+};
+
+BOOL PatchWUA(HMODULE hModule) {
     LPSTR pattern;
     SIZE_T offset00, offset01;
 #ifdef _AMD64_
-        pattern = "FFF3 4883EC?? 33DB 391D???????? 7508 8B05????????";
+    pattern = "FFF3 4883EC?? 33DB 391D???????? 7508 8B05????????";
-        offset00 = 10;
+    offset00 = 10;
-        offset01 = 18;
+    offset01 = 18;
 #elif defined(_X86_)
     if (IsWindows7()) {
         pattern = "833D????????00 743E E8???????? A3????????";
@@ -81,71 +109,37 @@ BOOL PatchWU(HMODULE hModule) {
         pattern = "8BFF 51 833D????????00 7507 A1????????";
         offset00 = 5;
         offset01 = 13;
-    } else {
-        return FALSE;
     }
 #endif
 
     MODULEINFO modinfo;
     GetModuleInformation(GetCurrentProcess(), hModule, &modinfo, sizeof(MODULEINFO));
 
-    SIZE_T rva = patternfind(modinfo.lpBaseOfDll, modinfo.SizeOfImage, 0, pattern);
+    LPBYTE ptr = patternfind(modinfo.lpBaseOfDll, modinfo.SizeOfImage, 0, pattern);
-    if (rva == -1) {
+    if (!ptr) {
-        dwprintf(L"No pattern match!");
+        trace(L"No pattern match!");
         return FALSE;
     }
-    uintptr_t baseAddress = (uintptr_t)modinfo.lpBaseOfDll;
+    trace(L"wuaueng!IsDeviceServiceable VA: %p", ptr);
-    uintptr_t lpfnIsDeviceServiceable = baseAddress + rva;
-    dwprintf(L"Address of wuaueng.dll!IsDeviceServiceable: %p", lpfnIsDeviceServiceable);
     BOOL result = FALSE;
     LPBOOL lpbFirstRun, lpbIsCPUSupportedResult;
 #ifdef _AMD64_
-        lpbFirstRun = (LPBOOL)(lpfnIsDeviceServiceable + offset00 + sizeof(uint32_t) + *(uint32_t *)(lpfnIsDeviceServiceable + offset00));
+    lpbFirstRun = (LPBOOL)(ptr + offset00 + sizeof(uint32_t) + *(uint32_t *)(ptr + offset00));
-        lpbIsCPUSupportedResult = (LPBOOL)(lpfnIsDeviceServiceable + offset01 + sizeof(uint32_t) + *(uint32_t *)(lpfnIsDeviceServiceable + offset01));
+    lpbIsCPUSupportedResult = (LPBOOL)(ptr + offset01 + sizeof(uint32_t) + *(uint32_t *)(ptr + offset01));
 #elif defined(_X86_)
-        lpbFirstRun = (LPBOOL)(*(uintptr_t *)(lpfnIsDeviceServiceable + offset00));
+    lpbFirstRun = (LPBOOL)(*(uintptr_t *)(ptr + offset00));
-        lpbIsCPUSupportedResult = (LPBOOL)(*(uintptr_t *)(lpfnIsDeviceServiceable + offset01));
+    lpbIsCPUSupportedResult = (LPBOOL)(*(uintptr_t *)(ptr + offset01));
 #endif
 
     if (*lpbFirstRun) {
         *lpbFirstRun = FALSE;
-        dwprintf(L"Patched FirstRun variable: %p = %08x", lpbFirstRun, *lpbFirstRun);
+        trace(L"Patched boolean value #1: %p = %08x", lpbFirstRun, *lpbFirstRun);
         result = TRUE;
     }
     if (!*lpbIsCPUSupportedResult) {
         *lpbIsCPUSupportedResult = TRUE;
-        dwprintf(L"Patched cached wuaueng.dll!IsCPUSupported result: %p = %08x", lpbIsCPUSupportedResult, *lpbIsCPUSupportedResult);
+        trace(L"Patched boolean value #2: %p = %08x", lpbIsCPUSupportedResult, *lpbIsCPUSupportedResult);
         result = TRUE;
     }
     return result;
 }
-
-HMODULE WINAPI _LoadLibraryExA(
-    _In_       LPCSTR  lpFileName,
-    _Reserved_ HANDLE  hFile,
-    _In_       DWORD   dwFlags
-) {
-    HMODULE result = LoadLibraryExA(lpFileName, hFile, dwFlags);
-    if (result) {
-        dwprintf(L"Loaded library: %S", lpFileName);
-        if (!_stricmp(lpFileName, get_wuauservdllA()) && PatchWU(result)) {
-            dwprintf(L"Patched Windows Update module!");
-        }
-    }
-    return result;
-}
-
-HMODULE WINAPI _LoadLibraryExW(
-    _In_       LPCWSTR lpFileName,
-    _Reserved_ HANDLE  hFile,
-    _In_       DWORD   dwFlags
-) {
-    HMODULE result = LoadLibraryExW(lpFileName, hFile, dwFlags);
-    if (result) {
-        dwprintf(L"Loaded library: %s", lpFileName);
-        if (!_wcsicmp(lpFileName, get_wuauservdllW()) && PatchWU(result)) {
-            dwprintf(L"Patched Windows Update module!");
-        }
-    }
-    return result;
-};

wufuc/hooks.h

@@ -0,0 +1,23 @@
+#pragma once
+
+typedef HMODULE(WINAPI *LOADLIBRARYEXA)(LPCSTR, HANDLE, DWORD);
+typedef HMODULE(WINAPI *LOADLIBRARYEXW)(LPCWSTR, HANDLE, DWORD);
+
+extern LOADLIBRARYEXW fpLoadLibraryExW;
+extern LOADLIBRARYEXA fpLoadLibraryExA;
+
+DWORD WINAPI NewThreadProc(LPVOID lpParam);
+
+HMODULE WINAPI LoadLibraryExA_hook(
+    _In_       LPCSTR  lpFileName,
+    _Reserved_ HANDLE  hFile,
+    _In_       DWORD   dwFlags
+);
+
+HMODULE WINAPI LoadLibraryExW_hook(
+    _In_       LPCWSTR lpFileName,
+    _Reserved_ HANDLE  hFile,
+    _In_       DWORD   dwFlags
+);
+
+BOOL PatchWUA(HMODULE hModule);

wufuc/iathook.c

@@ -0,0 +1,39 @@
+#include <Windows.h>
+
+#include "logging.h"
+#include "iathook.h"
+
+VOID iat_hook(HMODULE hModule, LPCSTR lpFuncName, LPVOID *lpOldAddress, LPVOID lpNewAddress) {
+    LPVOID *lpAddress = iat_find(hModule, lpFuncName);
+    if (!lpAddress || *lpAddress == lpNewAddress)
+        return;
+
+    if (!hModule)
+        hModule = GetModuleHandle(NULL);
+
+    trace(L"Modified import address: hmod=%p, import=%S, old addr=%p, new addr=%p", hModule, lpFuncName, *lpAddress, lpNewAddress);
+
+    DWORD flOldProtect;
+    DWORD flNewProtect = PAGE_READWRITE;
+    VirtualProtect(lpAddress, sizeof(LPVOID), flNewProtect, &flOldProtect);
+    if (lpOldAddress)
+        *lpOldAddress = *lpAddress;
+    *lpAddress = lpNewAddress;
+    VirtualProtect(lpAddress, sizeof(LPVOID), flOldProtect, &flNewProtect);
+}
+
+static LPVOID *iat_find(HMODULE hModule, LPCSTR lpFunctionName) {
+    uintptr_t hm = (uintptr_t)hModule;
+
+    for (PIMAGE_IMPORT_DESCRIPTOR iid = (PIMAGE_IMPORT_DESCRIPTOR)(hm + ((PIMAGE_NT_HEADERS)(hm + ((PIMAGE_DOS_HEADER)hm)->e_lfanew))
+        ->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress); iid->Name; iid++) {
+
+        LPVOID *pp;
+        for (SIZE_T i = 0; *(pp = i + (LPVOID *)(hm + iid->FirstThunk)); i++) {
+            LPSTR fn = (LPSTR)(hm + *(i + (SIZE_T *)(hm + iid->OriginalFirstThunk)) + 2);
+            if (!((uintptr_t)fn & IMAGE_ORDINAL_FLAG) && !_stricmp(lpFunctionName, fn))
+                return pp;
+        }
+    }
+    return NULL;
+}

wufuc/iathook.h

@@ -0,0 +1,5 @@
+#pragma once
+
+VOID iat_hook(HMODULE hModule, LPCSTR lpFuncName, LPVOID *lpOldAddress, LPVOID lpNewAddress);
+
+static LPVOID *iat_find(HMODULE hModule, LPCSTR lpFunctionName);

wufuc/logging.c

@@ -0,0 +1,53 @@
+#include <Windows.h>
+#include <stdio.h>
+#include <time.h>
+#include <tchar.h>
+#include <Psapi.h>
+
+#include "helpers.h"
+#include "logging.h"
+
+static FILE *fp;
+static BOOL logging_enabled = FALSE;
+
+BOOL logging_init(void) {
+    if (fp)
+        return TRUE;
+
+    WCHAR filename[MAX_PATH];
+    GetModuleFileNameW(HINST_THISCOMPONENT, filename, _countof(filename));
+    WCHAR drive[_MAX_DRIVE], dir[_MAX_DIR], fname[_MAX_FNAME];
+    _wsplitpath_s(filename, drive, _countof(drive), dir, _countof(dir), fname, _countof(fname), NULL, 0);
+
+    WCHAR basename[MAX_PATH];
+    GetModuleBaseNameW(GetCurrentProcess(), NULL, basename, _countof(basename));
+    wcscat_s(fname, _countof(fname), L".");
+    wcscat_s(fname, _countof(fname), basename);
+    _wmakepath_s(filename, _countof(filename), drive, dir, fname, L".log");
+
+    HANDLE hFile = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    LARGE_INTEGER size;
+    GetFileSizeEx(hFile, &size);
+    CloseHandle(hFile);
+    fp = _wfsopen(filename, size.QuadPart < (1 << 20) ? L"at" : L"wt", _SH_DENYWR);
+    return (fp != NULL);
+}
+
+VOID trace_(LPCWSTR format, ...) {
+    if (logging_init()) {
+        WCHAR datebuf[9], timebuf[9];
+        _wstrdate_s(datebuf, _countof(datebuf));
+        _wstrtime_s(timebuf, _countof(timebuf));
+        fwprintf_s(fp, L"%s %s [%d] ", datebuf, timebuf, GetCurrentProcessId());
+
+        va_list argptr;
+        va_start(argptr, format);
+        vfwprintf_s(fp, format, argptr);
+        va_end(argptr);
+        fflush(fp);
+    }
+}
+
+BOOL logging_free(void) {
+    return fp && !fclose(fp);
+}

wufuc/logging.h

@@ -0,0 +1,13 @@
+#pragma once
+
+BOOL logging_init(void);
+VOID trace_(LPCWSTR format, ...);
+BOOL logging_free(void);
+
+#define STRINGIZE_(x) #x
+#define STRINGIZE(x) STRINGIZE_(x)
+
+#define STRINGIZEW_(x) L#x
+#define STRINGIZEW(x) STRINGIZEW_(x)
+#define __LINEWSTR__ STRINGIZEW(__LINE__)
+#define trace(format, ...) trace_(__FILEW__ L":" __LINEWSTR__ L"(" __FUNCTIONW__ L"): " format L"\n", ##__VA_ARGS__)

wufuc/patternfind.c

@@ -1,32 +1,32 @@
 #include <Windows.h>
 #include "patternfind.h"
 
-/*  Ported to C from x64dbg's patternfind.cpp:
+/* Ported to C from x64dbg's patternfind.cpp:
-      <https://github.com/x64dbg/x64dbg/blob/development/src/dbg/patternfind.cpp>
+ *   https://github.com/x64dbg/x64dbg/blob/development/src/dbg/patternfind.cpp
+ * x64dbg license (GPL-3.0):
+ *   https://github.com/x64dbg/x64dbg/blob/development/LICENSE> 
+ */
 
-    x64dbg license (GPL-3.0):
+int hexchtoint(CHAR c) {
-      <https://github.com/x64dbg/x64dbg/blob/development/LICENSE> */
-
-static int hexchtoint(CHAR c) {
     int result = -1;
-    if (c >= '0' && c <= '9') {
+    if (c >= '0' && c <= '9')
         result = c - '0';
-    } else if (c >= 'A' && c <= 'F') {
+    else if (c >= 'A' && c <= 'F')
         result = c - 'A' + 10;
-    } else if (c >= 'a' && c <= 'f') {
+    else if (c >= 'a' && c <= 'f')
         result = c - 'a' + 10;
-    }
+
     return result;
 }
 
-static SIZE_T formathexpattern(LPCSTR patterntext, LPSTR formattext, SIZE_T formattextsize) {
+SIZE_T formathexpattern(LPCSTR patterntext, LPSTR formattext, SIZE_T formattextsize) {
     SIZE_T len = strlen(patterntext);
     SIZE_T result = 0;
     for (SIZE_T i = 0; i < len && (!formattext || result < formattextsize); i++) {
         if (patterntext[i] == '?' || hexchtoint(patterntext[i]) != -1) {
-            if (formattext) {
+            if (formattext)
                 formattext[result] = patterntext[i];
-            }
+
             result++;
         }
     }
@@ -35,21 +35,21 @@ static SIZE_T formathexpattern(LPCSTR patterntext, LPSTR formattext, SIZE_T form
 
 BOOL patterntransform(LPCSTR patterntext, LPPATTERNBYTE pattern, SIZE_T *patternsize) {
     SIZE_T cb = formathexpattern(patterntext, NULL, 0);
-    if (!cb || cb > *patternsize) {
+    if (!cb || cb > *patternsize)
         return FALSE;
-    }
+
     LPSTR formattext = calloc(cb, sizeof(CHAR));
     cb = formathexpattern(patterntext, formattext, cb);
 
-    if (cb % 2) {
+    if (cb % 2)
         formattext[cb++] = '?';
-    }
+
     formattext[cb] = '\0';
 
     for (SIZE_T i = 0, j = 0, k = 0; i < cb; i++, j ^= 1, k = (i - j) >> 1) {
-        if (formattext[i] == '?') {
+        if (formattext[i] == '?')
             pattern[k].nibble[j].wildcard = TRUE;
-        } else {
+        else {
             pattern[k].nibble[j].wildcard = FALSE;
             pattern[k].nibble[j].data = hexchtoint(formattext[i]) & 0xf;
         }
@@ -59,19 +59,18 @@ BOOL patterntransform(LPCSTR patterntext, LPPATTERNBYTE pattern, SIZE_T *pattern
     return TRUE;
 }
 
-SIZE_T patternfind(LPCBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR pattern) {
+LPBYTE patternfind(LPBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR pattern) {
-    SIZE_T result = -1;
+    LPBYTE result = NULL;
     SIZE_T searchpatternsize = strlen(pattern);
     LPPATTERNBYTE searchpattern = calloc(searchpatternsize, sizeof(PATTERNBYTE));
-    
+
     if (patterntransform(pattern, searchpattern, &searchpatternsize)) {
-        for (SIZE_T i = startindex, j = 0; i < datasize; i++) //search for the pattern
+        for (SIZE_T i = startindex, j = 0; i < datasize; i++) { //search for the pattern
-        {
             if ((searchpattern[j].nibble[0].wildcard || searchpattern[j].nibble[0].data == ((data[i] >> 4) & 0xf))
                 && (searchpattern[j].nibble[1].wildcard || searchpattern[j].nibble[1].data == (data[i] & 0xf))) { //check if our pattern matches the current byte
 
                 if (++j == searchpatternsize) { //everything matched
-                    result = i - searchpatternsize + 1;
+                    result = data + (i - searchpatternsize + 1);
                     break;
                 }
             } else if (j > 0) { //fix by Computer_Angel
@@ -87,33 +86,50 @@ SIZE_T patternfind(LPCBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR patt
 VOID patternwritebyte(LPBYTE byte, LPPATTERNBYTE pbyte) {
     BYTE n1 = (*byte >> 4) & 0xf;
     BYTE n2 = *byte & 0xf;
-    if (!pbyte->nibble[0].wildcard) {
+    if (!pbyte->nibble[0].wildcard)
         n1 = pbyte->nibble[0].data;
-    }
+
-    if (!pbyte->nibble[1].wildcard) {
+    if (!pbyte->nibble[1].wildcard)
         n2 = pbyte->nibble[1].data;
-    }
     *byte = ((n1 << 4) & 0xf0) | (n2 & 0xf);
 }
 
-VOID patternwrite(LPBYTE data, SIZE_T datasize, LPCSTR pattern) {
+BOOL patternwrite(LPBYTE data, SIZE_T datasize, LPCSTR pattern) {
+
     SIZE_T writepatternsize = strlen(pattern);
-    if (writepatternsize > datasize) {
+    if (writepatternsize > datasize) 
         writepatternsize = datasize;
-    }
+
+    BOOL result = FALSE;
     LPPATTERNBYTE writepattern = calloc(writepatternsize, sizeof(PATTERNBYTE));
     if (patterntransform(pattern, writepattern, &writepatternsize)) {
-        for (size_t i = 0; i < writepatternsize; i++) {
+        DWORD flNewProtect = PAGE_READWRITE;
-            patternwritebyte(&data[i], &writepattern[i]);
+        DWORD flOldProtect;
+
+        if (VirtualProtect(data, writepatternsize, flNewProtect, &flOldProtect)) {
+            for (size_t i = 0; i < writepatternsize; i++) {
+                BYTE n1 = (data[i] >> 4) & 0xf;
+                BYTE n2 = data[i] & 0xf;
+                if (!writepattern[i].nibble[0].wildcard)
+                    n1 = writepattern[i].nibble[0].data;
+
+                if (!writepattern[i].nibble[1].wildcard)
+                    n2 = writepattern[i].nibble[1].data;
+                data[i] = ((n1 << 4) & 0xf0) | (n2 & 0xf);
+
+            }
+            result = VirtualProtect(data, writepatternsize, flOldProtect, &flNewProtect);
         }
     }
     free(writepattern);
-}
+    return result;
-
+}
-SIZE_T patternsnr(LPBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR searchpattern, LPCSTR replacepattern) {
+
-    SIZE_T result = patternfind(data, datasize, startindex, searchpattern);
+LPBYTE patternsnr(LPBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR searchpattern, LPCSTR replacepattern) {
-    if (result == -1)
+    LPBYTE result = patternfind(data, datasize, startindex, searchpattern);
-        return result;
+    if (result == NULL)
-    patternwrite(data + result, datasize - result, replacepattern);
+        return result;
+
+    patternwrite(result, datasize, replacepattern);
     return result;
 }

wufuc/patternfind.h

@@ -10,7 +10,7 @@ typedef struct _PATTERNBYTE {
 int hexchtoint(CHAR ch);
 SIZE_T formathexpattern(LPCSTR patterntext, LPSTR formattext, SIZE_T formattextsize);
 BOOL patterntransform(LPCSTR patterntext, LPPATTERNBYTE pattern, SIZE_T *patternsize);
-SIZE_T patternfind(LPCBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR pattern);
+LPBYTE patternfind(LPBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR pattern);
 VOID patternwritebyte(LPBYTE byte, LPPATTERNBYTE pbyte);
-VOID patternwrite(LPBYTE data, SIZE_T datasize, LPCSTR pattern);
+BOOL patternwrite(LPBYTE data, SIZE_T datasize, LPCSTR pattern);
-SIZE_T patternsnr(LPBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR searchpattern, LPCSTR replacepattern);
+LPBYTE patternsnr(LPBYTE data, SIZE_T datasize, SIZE_T startindex, LPCSTR searchpattern, LPCSTR replacepattern);

wufuc/rundll32.c

@@ -2,8 +2,10 @@
 #include <TlHelp32.h>
 #include <tchar.h>
 #include <VersionHelpers.h>
+
+#include "helpers.h"
+#include "logging.h"
 #include "service.h"
-#include "util.h"
 
 void CALLBACK Rundll32Entry(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow) {
     HANDLE hEvent = OpenEvent(SYNCHRONIZE, FALSE, _T("Global\\wufuc_UnloadEvent"));
@@ -14,74 +16,72 @@ void CALLBACK Rundll32Entry(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int n
 
     LPWSTR osname;
     if (IsWindows7()) {
-        if (IsWindowsServer()) {
+        if (IsWindowsServer())
             osname = L"Windows Server 2008 R2";
-        } else {
+        else
             osname = L"Windows 7";
-        }
     } else if (IsWindows8Point1()) {
-        if (IsWindowsServer()) {
+        if (IsWindowsServer())
             osname = L"Windows Server 2012 R2";
-        } else {
+        else
             osname = L"Windows 8.1";
-        }
     }
-    dwprintf(L"Operating System: %s %d-bit", osname, sizeof(uintptr_t) * 8);
+    trace(L"Operating System: %s %d-bit", osname, sizeof(uintptr_t) * 8);
 
     char brand[0x31];
     get_cpuid_brand(brand);
     SIZE_T i = 0;
-    while (i < _countof(brand) && isspace(*(brand + i))) {
+    while (i < _countof(brand) && isspace(*(brand + i)))
         i++;
-    }
+
-    dwprintf(L"Processor: %S", brand + i);
+    trace(L"Processor: %S", brand + i);
 
     SC_HANDLE hSCManager = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT);
-    if (!hSCManager) {
+    if (!hSCManager)
         return;
-    }
+
     TCHAR lpGroupName[256];
     DWORD dwProcessId;
     BOOL result = get_svcpid(hSCManager, _T("wuauserv"), &dwProcessId);
-    if (!result && get_svcgname(hSCManager, _T("wuauserv"), lpGroupName, _countof(lpGroupName))) {
+    if (!result && get_svcgname(hSCManager, _T("wuauserv"), lpGroupName, _countof(lpGroupName)))
         result = get_svcgpid(hSCManager, lpGroupName, &dwProcessId);
-    }
+
     CloseServiceHandle(hSCManager);
-    if (!result) {
+    if (!result)
         return;
-    }
 
     HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwProcessId);
-    if (!hProcess) {
+    if (!hProcess)
         return;
-    }
+
-    
     TCHAR lpLibFileName[MAX_PATH];
     GetModuleFileName(HINST_THISCOMPONENT, lpLibFileName, _countof(lpLibFileName));
-
     SIZE_T size = (_tcslen(lpLibFileName) + 1) * sizeof(TCHAR);
 
     LPVOID lpBaseAddress = VirtualAllocEx(hProcess, NULL, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
     if (lpBaseAddress && WriteProcessMemory(hProcess, lpBaseAddress, lpLibFileName, size, NULL)) {
-
+        HANDLE hThread = CreateRemoteThread(
-        HANDLE hThread = CreateRemoteThread(hProcess, NULL, 0, 
+            hProcess,
-            (LPTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandle(L"kernel32.dll"), 
+            NULL,
-            STRINGIZE(LoadLibrary)), 
+            0,
-            lpBaseAddress, 0, NULL
+            (LPTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandle(_T("kernel32.dll")),
+            STRINGIZE(LoadLibrary)),
+            lpBaseAddress,
+            0,
+            NULL
         );
         WaitForSingleObject(hThread, INFINITE);
-        dwprintf(L"Injected into process: %d", dwProcessId);
+        trace(L"Injected into process: %d", dwProcessId);
         CloseHandle(hThread);
     }
     VirtualFreeEx(hProcess, lpBaseAddress, 0, MEM_RELEASE);
     CloseHandle(hProcess);
-    close_log();
 }
 
 void CALLBACK Rundll32Unload(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow) {
     HANDLE hEvent = OpenEvent(EVENT_MODIFY_STATE, FALSE, _T("Global\\wufuc_UnloadEvent"));
     if (hEvent) {
-        dwprintf(L"Setting unload event...");
+        trace(L"Setting unload event...");
         SetEvent(hEvent);
         CloseHandle(hEvent);
     }

wufuc/service.c

@@ -1,8 +1,10 @@
 #include <windows.h>
 #include <stdio.h>
 #include <tchar.h>
-#include "util.h"
+
+#include "helpers.h"
 #include "shellapihelper.h"
+#include "logging.h"
 #include "service.h"
 
 static CHAR wuauservdllA[MAX_PATH];
@@ -12,10 +14,10 @@ BOOL get_svcdllA(LPCSTR lpServiceName, LPSTR lpServiceDll, DWORD dwSize) {
     CHAR lpSubKey[257];
     sprintf_s(lpSubKey, _countof(lpSubKey), "SYSTEM\\CurrentControlSet\\services\\%s\\Parameters", lpServiceName);
     DWORD cb = dwSize;
-    if (RegGetValueA(HKEY_LOCAL_MACHINE, lpSubKey, "ServiceDll", RRF_RT_REG_SZ, NULL, lpServiceDll, &cb)) {
+    if (RegGetValueA(HKEY_LOCAL_MACHINE, lpSubKey, "ServiceDll", RRF_RT_REG_SZ, NULL, lpServiceDll, &cb))
         return FALSE;
-    }
+    
-    dwprintf(L"Service \"%S\" DLL path: %S", lpServiceName, lpServiceDll);
+    trace(L"Service \"%S\" DLL path: %S", lpServiceName, lpServiceDll);
     return TRUE;
 }
 
@@ -23,32 +25,31 @@ BOOL get_svcdllW(LPCWSTR lpServiceName, LPWSTR lpServiceDll, DWORD dwSize) {
     WCHAR lpSubKey[257];
     swprintf_s(lpSubKey, _countof(lpSubKey), L"SYSTEM\\CurrentControlSet\\services\\%s\\Parameters", lpServiceName);
     DWORD cb = dwSize;
-    if (RegGetValueW(HKEY_LOCAL_MACHINE, lpSubKey, L"ServiceDll", RRF_RT_REG_SZ, NULL, lpServiceDll, &cb)) {
+    if (RegGetValueW(HKEY_LOCAL_MACHINE, lpSubKey, L"ServiceDll", RRF_RT_REG_SZ, NULL, lpServiceDll, &cb))
         return FALSE;
-    }
+
-    dwprintf(L"Service \"%s\" DLL path: %s", lpServiceName, lpServiceDll);
+    trace(L"Service \"%s\" DLL path: %s", lpServiceName, lpServiceDll);
     return TRUE;
 }
 
 LPSTR get_wuauservdllA(void) {
-    if (wuauservdllA[0] == '\0') {
+    if (!wuauservdllA[0])
         get_svcdllA("wuauserv", wuauservdllA, _countof(wuauservdllA));
-    }
+    
     return wuauservdllA;
 }
 
 LPWSTR get_wuauservdllW(void) {
-    if (wuauservdllW[0] == L'\0') {
+    if (!wuauservdllW[0])
         get_svcdllW(L"wuauserv", wuauservdllW, _countof(wuauservdllW));
-    }
+    
     return wuauservdllW;
 }
 
 BOOL get_svcpid(SC_HANDLE hSCManager, LPCTSTR lpServiceName, DWORD *lpdwProcessId) {
     SC_HANDLE hService = OpenService(hSCManager, lpServiceName, SERVICE_QUERY_STATUS);
-    if (!hService) {
+    if (!hService)
         return FALSE;
-    }
 
     SERVICE_STATUS_PROCESS lpBuffer;
     DWORD cbBytesNeeded;
@@ -58,9 +59,9 @@ BOOL get_svcpid(SC_HANDLE hSCManager, LPCTSTR lpServiceName, DWORD *lpdwProcessI
 
         *lpdwProcessId = lpBuffer.dwProcessId;
 #ifdef _UNICODE
-        dwprintf(L"Service \"%s\" process ID: %d", lpServiceName, *lpdwProcessId);
+        trace(L"Service \"%s\" process ID: %d", lpServiceName, *lpdwProcessId);
 #else
-        dwprintf(L"Service \"%S\" process ID: %d", lpServiceName, *lpdwProcessId);
+        trace(L"Service \"%S\" process ID: %d", lpServiceName, *lpdwProcessId);
 #endif
         result = TRUE;
     }
@@ -70,15 +71,13 @@ BOOL get_svcpid(SC_HANDLE hSCManager, LPCTSTR lpServiceName, DWORD *lpdwProcessI
 
 BOOL get_svcgname(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpGroupName, SIZE_T dwSize) {
     TCHAR lpBinaryPathName[0x8000];
-    if (!get_svcpath(hSCManager, lpServiceName, lpBinaryPathName, _countof(lpBinaryPathName))) {
+    if (!get_svcpath(hSCManager, lpServiceName, lpBinaryPathName, _countof(lpBinaryPathName)))
         return FALSE;
-    }
     
     int numArgs;
     LPWSTR *argv = CommandLineToArgv(lpBinaryPathName, &numArgs);
-    if (numArgs < 3) {
+    if (numArgs < 3)
         return FALSE;
-    }
 
     TCHAR fname[_MAX_FNAME];
     _tsplitpath_s(argv[0], NULL, 0, NULL, 0, fname, _countof(fname), NULL, 0);
@@ -90,9 +89,9 @@ BOOL get_svcgname(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpGroupNam
             if (!_tcsicmp(*(p++), _T("-k")) && !_tcscpy_s(lpGroupName, dwSize, *p)) {
                 result = TRUE;
 #ifdef _UNICODE
-                dwprintf(L"Service \"%s\" group name: %s", lpServiceName, lpGroupName);
+                trace(L"Service \"%s\" group name: %s", lpServiceName, lpGroupName);
 #else
-                dwprintf(L"Service \"%S\" group name: %S", lpServiceName, lpGroupName);
+                trace(L"Service \"%S\" group name: %S", lpServiceName, lpGroupName);
 #endif
                 break;
             }
@@ -103,16 +102,15 @@ BOOL get_svcgname(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpGroupNam
 
 BOOL get_svcpath(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpBinaryPathName, SIZE_T dwSize) {
     HANDLE hService = OpenService(hSCManager, lpServiceName, SERVICE_QUERY_CONFIG);
-    if (!hService) {
+    if (!hService)
         return FALSE;
-    }
+    
     DWORD cbBytesNeeded;
     BOOL result = FALSE;
     if (!QueryServiceConfig(hService, NULL, 0, &cbBytesNeeded) && GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
         LPQUERY_SERVICE_CONFIG sc = malloc(cbBytesNeeded);
-        if (QueryServiceConfig(hService, sc, cbBytesNeeded, &cbBytesNeeded) && !_tcscpy_s(lpBinaryPathName, dwSize, sc->lpBinaryPathName)) {
+        if (QueryServiceConfig(hService, sc, cbBytesNeeded, &cbBytesNeeded) && !_tcscpy_s(lpBinaryPathName, dwSize, sc->lpBinaryPathName))
             result = TRUE;
-        }
         free(sc);
     }
     CloseServiceHandle(hService);
@@ -135,9 +133,9 @@ BOOL get_svcgpid(SC_HANDLE hSCManager, LPTSTR lpServiceGroupName, DWORD *lpdwPro
             *lpdwProcessId = dwProcessId;
             result = TRUE;
 #ifdef _UNICODE
-            dwprintf(L"Service group \"%s\" process ID: %d", lpServiceGroupName, *lpdwProcessId);
+            trace(L"Service group \"%s\" process ID: %d", lpServiceGroupName, *lpdwProcessId);
 #else
-            dwprintf(L"Service group \"%S\" process ID: %d", lpServiceGroupName, *lpdwProcessId);
+            trace(L"Service group \"%S\" process ID: %d", lpServiceGroupName, *lpdwProcessId);
 #endif
             break;
         }

wufuc/util.c

@@ -1,202 +0,0 @@
-#include <Windows.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <intrin.h> 
-#include <tchar.h>
-#include <TlHelp32.h>
-#include <Psapi.h>
-#include "util.h"
-
-static BOOL checkedIsWindows7 = FALSE;
-static BOOL isWindows7 = FALSE;
-static BOOL checkedIsWindows8Point1 = FALSE;
-static BOOL isWindows8Point1 = FALSE;
-
-static LPFN_ISWOW64PROCESS fnIsWow64Process = NULL;
-static BOOL checkedIsWow64 = FALSE;
-static BOOL isWow64 = FALSE;
-
-static FILE *log_fp = NULL;
-
-LPVOID *FindIAT(HMODULE hModule, LPSTR lpFunctionName) {
-    uintptr_t hm = (uintptr_t)hModule;
-
-    for (PIMAGE_IMPORT_DESCRIPTOR iid = (PIMAGE_IMPORT_DESCRIPTOR)(hm + ((PIMAGE_NT_HEADERS)(hm + ((PIMAGE_DOS_HEADER)hm)->e_lfanew))
-        ->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress); iid->Name; iid++) {
-
-        LPVOID *p;
-        for (SIZE_T i = 0; *(p = i + (LPVOID *)(hm + iid->FirstThunk)); i++) {
-            LPSTR fn = (LPSTR)(hm + *(i + (SIZE_T *)(hm + iid->OriginalFirstThunk)) + 2);
-            if (!((uintptr_t)fn & IMAGE_ORDINAL_FLAG) && !_stricmp(lpFunctionName, fn)) {
-                return p;
-            }
-        }
-    }
-    return NULL;
-}
-
-VOID DetourIAT(HMODULE hModule, LPSTR lpFuncName, LPVOID *lpOldAddress, LPVOID lpNewAddress) {
-    LPVOID *lpAddress = FindIAT(hModule, lpFuncName);
-    if (!lpAddress || *lpAddress == lpNewAddress) {
-        return;
-    }
-
-    DWORD flOldProtect;
-    DWORD flNewProtect = PAGE_READWRITE;
-    VirtualProtect(lpAddress, sizeof(LPVOID), flNewProtect, &flOldProtect);
-    if (lpOldAddress) {
-        *lpOldAddress = *lpAddress;
-    }
-    dwprintf(L"Modified %S import address: %p => %p", lpFuncName, *lpAddress, lpNewAddress);
-    *lpAddress = lpNewAddress;
-    VirtualProtect(lpAddress, sizeof(LPVOID), flOldProtect, &flNewProtect);
-}
-
-VOID SuspendProcessThreads(DWORD dwProcessId, DWORD dwThreadId, HANDLE *lphThreads, SIZE_T dwSize, SIZE_T *lpcb) {
-    HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
-    THREADENTRY32 te;
-    ZeroMemory(&te, sizeof(THREADENTRY32));
-    te.dwSize = sizeof(te);
-    Thread32First(hSnap, &te);
-
-    SIZE_T count = 0;
-
-    do {
-        if (te.th32OwnerProcessID != dwProcessId || te.th32ThreadID == dwThreadId) {
-            continue;
-        }
-        lphThreads[count] = OpenThread(THREAD_SUSPEND_RESUME, FALSE, te.th32ThreadID);
-        SuspendThread(lphThreads[count]);
-        count++;
-    } while (count < dwSize && Thread32Next(hSnap, &te));
-    CloseHandle(hSnap);
-
-    *lpcb = count;
-    dwprintf(L"Suspended %d other threads", count);
-}
-
-VOID ResumeAndCloseThreads(HANDLE *lphThreads, SIZE_T cb) {
-    for (SIZE_T i = 0; i < cb; i++) {
-        ResumeThread(lphThreads[i]);
-        CloseHandle(lphThreads[i]);
-    }
-    dwprintf(L"Resumed %d other threads", cb);
-}
-
-BOOL CompareWindowsVersion(BYTE Operator, DWORD dwMajorVersion, DWORD dwMinorVersion, WORD wServicePackMajor, WORD wServicePackMinor, DWORD dwTypeMask) {
-    OSVERSIONINFOEX osvi;
-    ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
-    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
-    osvi.dwMajorVersion = dwMajorVersion;
-    osvi.dwMinorVersion = dwMinorVersion;
-    osvi.wServicePackMajor = wServicePackMajor;
-    osvi.wServicePackMinor = wServicePackMinor;
-
-    DWORDLONG dwlConditionMask = 0;
-    VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, Operator);
-    VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION, Operator);
-    VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, Operator);
-    VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMINOR, Operator);
-
-    return VerifyVersionInfo(&osvi, dwTypeMask, dwlConditionMask);
-}
-
-BOOL IsWindows7(void) {
-    if (!checkedIsWindows7) {
-        isWindows7 = CompareWindowsVersion(VER_EQUAL, 6, 1, 0, 0, VER_MAJORVERSION | VER_MINORVERSION);
-        checkedIsWindows7 = TRUE;
-    }
-    return isWindows7;
-}
-
-BOOL IsWindows8Point1(void) {
-    if (!checkedIsWindows8Point1) {
-        isWindows8Point1 = CompareWindowsVersion(VER_EQUAL, 6, 3, 0, 0, VER_MAJORVERSION | VER_MINORVERSION);
-        checkedIsWindows8Point1 = TRUE;
-    }
-    return isWindows8Point1;
-}
-
-BOOL IsOperatingSystemSupported(void) {
-#if !defined(_AMD64_) && !defined(_X86_)
-    return FALSE;
-#else
-    return IsWindows7() || IsWindows8Point1();
-#endif
-}
-
-BOOL IsWow64(void) {
-    if (!checkedIsWow64) {
-        if (!fnIsWow64Process) {
-            fnIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress(GetModuleHandle(_T("kernel32.dll")), "IsWow64Process");
-        }
-        if (fnIsWow64Process && fnIsWow64Process(GetCurrentProcess(), &isWow64)) {
-            checkedIsWow64 = TRUE;
-        }
-    }
-    return isWow64;
-}
-
-void get_cpuid_brand(char* brand) {
-    int info[4];
-    __cpuidex(info, 0x80000000, 0);
-    if (info[0] < 0x80000004) {
-        brand[0] = '\0';
-        return;
-    }
-    uint32_t *char_as_int = (uint32_t *)brand;
-    for (int op = 0x80000002; op <= 0x80000004; op++) {
-        __cpuidex(info, op, 0);
-        *(char_as_int++) = info[0];
-        *(char_as_int++) = info[1];
-        *(char_as_int++) = info[2];
-        *(char_as_int++) = info[3];
-    }
-}
-
-BOOL init_log(void) {
-    if (log_fp) {
-        return TRUE;
-    }
-    WCHAR filename[MAX_PATH];
-    GetModuleFileNameW(HINST_THISCOMPONENT, filename, _countof(filename));
-    WCHAR drive[_MAX_DRIVE], dir[_MAX_DIR], fname[_MAX_FNAME];
-    _wsplitpath_s(filename, drive, _countof(drive), dir, _countof(dir), fname, _countof(fname), NULL, 0);
-
-    WCHAR basename[MAX_PATH];
-    GetModuleBaseNameW(GetCurrentProcess(), NULL, basename, _countof(basename));
-    wcscat_s(fname, _countof(fname), L".");
-    wcscat_s(fname, _countof(fname), basename);
-    _wmakepath_s(filename, _countof(filename), drive, dir, fname, L".log");
-
-    HANDLE hFile = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
-    LARGE_INTEGER size;
-    GetFileSizeEx(hFile, &size);
-    CloseHandle(hFile);
-    log_fp = _wfsopen(filename, size.QuadPart < (1 << 20) ? L"at" : L"wt", _SH_DENYWR);
-    if (!log_fp) {
-        return FALSE;
-    }
-    return TRUE;
-}
-
-VOID close_log(void) {
-    if (log_fp) {
-        fclose(log_fp);
-    }
-}
-
-VOID dwprintf_(LPCWSTR format, ...) {
-    if (init_log()) {
-        WCHAR datebuf[9], timebuf[9];
-        _wstrdate_s(datebuf, _countof(datebuf));
-        _wstrtime_s(timebuf, _countof(timebuf));
-        fwprintf_s(log_fp, L"%s %s [%d] ", datebuf, timebuf, GetCurrentProcessId());
-
-        va_list argptr;
-        va_start(argptr, format);
-        vfwprintf_s(log_fp, format, argptr);
-        va_end(argptr);
-        fflush(log_fp);
-    }
-}

wufuc/util.h

@@ -1,39 +0,0 @@
-#pragma once
-
-EXTERN_C IMAGE_DOS_HEADER __ImageBase;
-#define HINST_THISCOMPONENT ((HINSTANCE)&__ImageBase)
-
-typedef BOOL(WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
-
-LPVOID *FindIAT(HMODULE hModule, LPSTR lpFuncName);
-VOID DetourIAT(HMODULE hModule, LPSTR lpFuncName, LPVOID *lpOldAddress, LPVOID lpNewAddress);
-
-VOID SuspendProcessThreads(DWORD dwProcessId, DWORD dwThreadId, HANDLE *lphThreads, SIZE_T dwSize, SIZE_T *lpcb);
-VOID ResumeAndCloseThreads(HANDLE *lphThreads, SIZE_T dwSize);
-
-BOOL CompareWindowsVersion(BYTE Operator, DWORD dwMajorVersion, DWORD dwMinorVersion, WORD wServicePackMajor, WORD wServicePackMinor, DWORD dwTypeMask);
-BOOL IsWindows7(void);
-BOOL IsWindows8Point1(void);
-BOOL IsOperatingSystemSupported(void);
-BOOL IsWow64(void);
-
-void get_cpuid_brand(char *brand);
-
-VOID dwprintf_(LPCWSTR format, ...);
-
-#define DETOUR_IAT(x, y) \
-    LPVOID _LPORIGINAL##y; \
-    DetourIAT(x, #y, &_LPORIGINAL##y, &_##y)
-#define RESTORE_IAT(x, y) \
-    DetourIAT(x, #y, NULL, _LPORIGINAL##y)
-
-BOOL init_log(void);
-VOID close_log(void);
-
-#define STRINGIZE_(x) #x
-#define STRINGIZE(x) STRINGIZE_(x)
-
-#define STRINGIZEW_(x) L#x
-#define STRINGIZEW(x) STRINGIZEW_(x)
-#define __LINEWSTR__ STRINGIZEW(__LINE__)
-#define dwprintf(format, ...) dwprintf_(__FILEW__ L"(" __LINEWSTR__ L"): " format L"\n", ##__VA_ARGS__)

wufuc/wufuc.vcxproj

@@ -108,7 +108,7 @@
     <Link>
       <SubSystem>Windows</SubSystem>
       <ModuleDefinitionFile>exports.def</ModuleDefinitionFile>
-      <AdditionalDependencies>Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
@@ -121,7 +121,7 @@
     <Link>
       <SubSystem>Windows</SubSystem>
       <ModuleDefinitionFile>exports.def</ModuleDefinitionFile>
-      <AdditionalDependencies>Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -142,7 +142,7 @@
       <OptimizeReferences>true</OptimizeReferences>
       <ModuleDefinitionFile>exports.def</ModuleDefinitionFile>
       <GenerateDebugInformation>false</GenerateDebugInformation>
-      <AdditionalDependencies>Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
     <PostBuildEvent>
       <Command>
@@ -167,7 +167,7 @@
       <OptimizeReferences>true</OptimizeReferences>
       <ModuleDefinitionFile>exports.def</ModuleDefinitionFile>
       <GenerateDebugInformation>false</GenerateDebugInformation>
-      <AdditionalDependencies>Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
     <PostBuildEvent>
       <Command>
@@ -175,25 +175,29 @@
     </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="core.c" />
+    <ClCompile Include="hooks.c" />
     <ClCompile Include="dllmain.c" />
+    <ClCompile Include="iathook.c" />
+    <ClCompile Include="logging.c" />
     <ClCompile Include="patternfind.c" />
     <ClCompile Include="rundll32.c" />
     <ClCompile Include="service.c" />
-    <ClCompile Include="util.c" />
+    <ClCompile Include="helpers.c" />
   </ItemGroup>
   <ItemGroup>
     <None Include="exports.def" />
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="core.h" />
+    <ClInclude Include="hooks.h" />
+    <ClInclude Include="iathook.h" />
+    <ClInclude Include="logging.h" />
     <ClInclude Include="patternfind.h" />
     <ClInclude Include="service.h" />
     <ClInclude Include="shellapihelper.h" />
-    <ClInclude Include="util.h" />
+    <ClInclude Include="helpers.h" />
   </ItemGroup>
   <ItemGroup>
-    <ResourceCompile Include="version.rc" />
+    <ResourceCompile Include="wufuc.rc" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">