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/*
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* snowcat-hook.dll —— 观测版
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*
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* 目的：搞清楚 QQ 9.9.37 到底是谁、在什么时机读取 resources\app\package.json，
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* 以及读取走的是 kernel32!CreateFileW 还是 ntdll!NtCreateFile（NT 层）。
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*
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* 只记录，不改内容。结果写到 D:\SnowCat.Portable\hook-trace.txt
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*/
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#include <windows.h>
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#include <winternl.h>
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#include <stdio.h>
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#include <wchar.h>
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#include "MinHook.h"
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#define TRACE_PATH L"D:\\SnowCat.Portable\\hook-trace.txt"
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static HANDLE (WINAPI *origCreateFileW)(LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE) = NULL;
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static NTSTATUS (NTAPI *origNtOpenFile)(PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES, PIO_STATUS_BLOCK, ULONG, ULONG) = NULL;
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static NTSTATUS (NTAPI *origNtCreateFile)(PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES, PIO_STATUS_BLOCK,
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PLARGE_INTEGER, ULONG, ULONG, ULONG, ULONG, PVOID, ULONG) = NULL;
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static CRITICAL_SECTION g_lock;
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static volatile LONG g_subsReady = 0;
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static void trace(const wchar_t* api, const wchar_t* path) {
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EnterCriticalSection(&g_lock);
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HANDLE h = CreateFileW(TRACE_PATH, FILE_APPEND_DATA, FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if (h != INVALID_HANDLE_VALUE) {
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char buf[2048];
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int n = WideCharToMultiByte(CP_UTF8, 0, path, -1, buf, sizeof(buf) - 1, NULL, NULL);
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if (n <= 0) { buf[0] = 0; }
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char line[2304];
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int len = snprintf(line, sizeof(line), "%s\t%s\n", (const char*)api, buf);
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DWORD w = 0;
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SetFilePointer(h, 0, NULL, FILE_END);
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WriteFile(h, line, (DWORD)len, &w, NULL);
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CloseHandle(h);
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}
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LeaveCriticalSection(&g_lock);
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}
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static int interesting(const wchar_t* p) {
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if (!p) return 0;
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if (wcsstr(p, L"package.json")) return 1;
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if (wcsstr(p, L"application.asar")) return 1;
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if (wcsstr(p, L"loadNapCat")) return 1;
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if (wcsstr(p, L"app_launcher")) return 1;
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if (wcsstr(p, L"qqnt")) return 1;
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return 0;
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}
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static wchar_t g_fakePkg[MAX_PATH];
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static wchar_t g_patchedAsar[MAX_PATH];
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static wchar_t g_qqDir[MAX_PATH];
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static void buildSubstitutes(void) {
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// QQ 目录 = QQ.exe 所在目录（反射注入器是父进程拉起的，模块表里主 exe 可查）
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wchar_t exePath[MAX_PATH];
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GetModuleFileNameW(NULL, exePath, MAX_PATH);
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wchar_t* slash = wcsrchr(exePath, L'\\');
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if (slash) *slash = 0;
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wcscpy(g_qqDir, exePath);
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// 假 package.json：优先 snowcat-fake-pkg.json（真字段+main 覆写合并版）
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wchar_t fakePath[MAX_PATH];
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swprintf(fakePath, MAX_PATH, L"%s\\snowcat-fake-pkg.json", g_qqDir);
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WIN32_FILE_ATTRIBUTE_DATA fa2;
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if (GetFileAttributesExW(fakePath, GetFileExInfoStandard, &fa2)) {
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wcscpy(g_fakePkg, fakePath);
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} else {
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DWORD n = GetEnvironmentVariableW(L"NAPCAT_PATCH_PACKAGE", g_fakePkg, MAX_PATH);
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if (n == 0) {
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swprintf(g_fakePkg, MAX_PATH, L"%s\\qqnt.json", g_qqDir);
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}
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}
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// patched asar：snowcat-patched.asar（若存在）
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swprintf(g_patchedAsar, MAX_PATH, L"%s\\snowcat-patched.asar", g_qqDir);
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WIN32_FILE_ATTRIBUTE_DATA fa;
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if (!GetFileAttributesExW(g_patchedAsar, GetFileExInfoStandard, &fa)) {
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g_patchedAsar[0] = 0; // 无副本则不替换 asar
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}
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}
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static int isPkg(const wchar_t* p) {
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return p && wcsstr(p, L"resources") && wcsstr(p, L"package.json");
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}
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static int isAsar(const wchar_t* p) {
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return p && wcsstr(p, L"application.asar");
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}
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static HANDLE WINAPI detourCreateFileW(LPCWSTR lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode,
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LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreationDisposition,
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DWORD dwFlagsAndAttributes, HANDLE hTemplateFile) {
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if (interesting(lpFileName)) trace(L"CreateFileW", lpFileName);
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if (g_subsReady) {
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if (isPkg(lpFileName)) return origCreateFileW(g_fakePkg, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
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if (isAsar(lpFileName) && g_patchedAsar[0]) return origCreateFileW(g_patchedAsar, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
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}
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return origCreateFileW(lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes,
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dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
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}
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static NTSTATUS NTAPI detourNtCreateFile(PHANDLE FileHandle, ACCESS_MASK DesiredAccess,
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POBJECT_ATTRIBUTES ObjectAttributes, PIO_STATUS_BLOCK IoStatusBlock,
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PLARGE_INTEGER AllocationSize, ULONG FileAttributes, ULONG ShareAccess,
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ULONG CreateDisposition, ULONG CreateOptions, PVOID EaBuffer, ULONG EaLength) {
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if (g_subsReady && ObjectAttributes && ObjectAttributes->ObjectName && ObjectAttributes->ObjectName->Buffer) {
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wchar_t* bp = ObjectAttributes->ObjectName->Buffer;
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/* NT 路径 \??\C:\... —— 匹配用宽松 wcsstr 即可 */
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if (isPkg(bp)) {
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static UNICODE_STRING us;
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static wchar_t ntpath[MAX_PATH + 8];
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swprintf(ntpath, MAX_PATH + 8, L"\\\\??\\\\%s", g_fakePkg);
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us.Buffer = ntpath;
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us.Length = (USHORT)(wcslen(ntpath) * 2);
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us.MaximumLength = us.Length + 2;
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ObjectAttributes->ObjectName = &us;
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trace(L"NtCreateFile→FAKE-PKG", bp);
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return origNtCreateFile(FileHandle, DesiredAccess, ObjectAttributes, IoStatusBlock, AllocationSize, FileAttributes, ShareAccess, CreateDisposition, CreateOptions, EaBuffer, EaLength);
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}
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if (isAsar(bp) && g_patchedAsar[0]) {
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static UNICODE_STRING us2;
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static wchar_t ntpath2[MAX_PATH + 8];
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swprintf(ntpath2, MAX_PATH + 8, L"\\\\??\\\\%s", g_patchedAsar);
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us2.Buffer = ntpath2;
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us2.Length = (USHORT)(wcslen(ntpath2) * 2);
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us2.MaximumLength = us2.Length + 2;
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ObjectAttributes->ObjectName = &us2;
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trace(L"NtCreateFile→PATCHED-ASAR", bp);
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return origNtCreateFile(FileHandle, DesiredAccess, ObjectAttributes, IoStatusBlock, AllocationSize, FileAttributes, ShareAccess, CreateDisposition, CreateOptions, EaBuffer, EaLength);
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}
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}
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if (ObjectAttributes && ObjectAttributes->ObjectName && ObjectAttributes->ObjectName->Buffer) {
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if (interesting(ObjectAttributes->ObjectName->Buffer)) {
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trace(L"NtCreateFile", ObjectAttributes->ObjectName->Buffer);
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}
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}
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return origNtCreateFile(FileHandle, DesiredAccess, ObjectAttributes, IoStatusBlock, AllocationSize,
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FileAttributes, ShareAccess, CreateDisposition, CreateOptions, EaBuffer, EaLength);
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}
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static NTSTATUS NTAPI detourNtOpenFile(PHANDLE FileHandle, ACCESS_MASK DesiredAccess,
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POBJECT_ATTRIBUTES ObjectAttributes, PIO_STATUS_BLOCK IoStatusBlock,
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ULONG ShareAccess, ULONG OpenOptions) {
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if (ObjectAttributes && ObjectAttributes->ObjectName && ObjectAttributes->ObjectName->Buffer) {
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trace(L"NtOpenFile", ObjectAttributes->ObjectName->Buffer);
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}
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return origNtOpenFile(FileHandle, DesiredAccess, ObjectAttributes, IoStatusBlock, ShareAccess, OpenOptions);
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}
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static DWORD WINAPI initThread(LPVOID param) {
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(void)param;
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InitializeCriticalSection(&g_lock);
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buildSubstitutes();
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g_subsReady = 1;
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trace(L"===", L"injected");
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if (MH_Initialize() != MH_OK) { trace(L"===ERR", L"MH_Initialize failed"); return 1; }
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HMODULE k32 = GetModuleHandleW(L"kernel32.dll");
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HMODULE nt = GetModuleHandleW(L"ntdll.dll");
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void* pCreateFileW = (void*)GetProcAddress(k32, "CreateFileW");
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void* pNtCreateFile = (void*)GetProcAddress(nt, "NtCreateFile");
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if (pCreateFileW && MH_CreateHook(pCreateFileW, &detourCreateFileW, (LPVOID*)&origCreateFileW) == MH_OK)
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trace(L"===", L"hook CreateFileW ok");
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if (pNtCreateFile && MH_CreateHook(pNtCreateFile, &detourNtCreateFile, (LPVOID*)&origNtCreateFile) == MH_OK)
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trace(L"===", L"hook NtCreateFile ok");
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void* pNtOpenFile = (void*)GetProcAddress(nt, "NtOpenFile");
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if (pNtOpenFile && MH_CreateHook(pNtOpenFile, &detourNtOpenFile, (LPVOID*)&origNtOpenFile) == MH_OK)
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trace(L"===", L"hook NtOpenFile ok");
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MH_EnableHook(MH_ALL_HOOKS);
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trace(L"===", L"hooks enabled");
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return 0;
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}
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BOOL WINAPI DllMain(HMODULE hModule, DWORD reason, LPVOID reserved) {
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(void)reserved;
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if (reason == DLL_PROCESS_ATTACH) {
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DisableThreadLibraryCalls(hModule);
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HANDLE th = CreateThread(NULL, 0, initThread, NULL, 0, NULL);
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if (th) CloseHandle(th);
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}
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return TRUE;
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}
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