我試圖編寫一個程序,使用CreateRemoteThread
來注入一個dll。CreateRemoteThread返回ERROR_ACCESS_DENIED - Windows 7 DLL注入
問題是CreateRemoteThread拒絕工作。 GetLastError()返回5,這是ERROR_ACCESS_DENIED。我不知道爲什麼!
我正在從此視頻http://www.youtube.com/watch?v=H3O3hmXkt1I工作。
#include <iostream>
#include <direct.h>
#include <Windows.h>
#include <TlHelp32.h>
using namespace std;
char* GetCurrentDir()
{
char* szRet = (char*)malloc(MAX_PATH);
_getcwd(szRet, MAX_PATH);
return szRet;
}
LPCTSTR SzToLPCTSTR(char* szString)
{
LPTSTR lpszRet;
size_t size = strlen(szString)+1;
lpszRet = (LPTSTR)malloc(MAX_PATH);
mbstowcs_s(NULL, lpszRet, size, szString, _TRUNCATE);
return lpszRet;
}
void WaitForProcessToAppear(LPCTSTR lpcszProc, DWORD dwDelay)
{
HANDLE hSnap;
PROCESSENTRY32 peProc;
BOOL bAppeared = FALSE;
while(!bAppeared)
{
if((hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)) != INVALID_HANDLE_VALUE)
{
peProc.dwSize = sizeof(PROCESSENTRY32);
if(Process32First(hSnap, &peProc))
while(Process32Next(hSnap, &peProc) && !bAppeared)
if(!lstrcmp(lpcszProc, peProc.szExeFile))
bAppeared = TRUE;
}
CloseHandle(hSnap);
Sleep(dwDelay);
}
}
DWORD GetProcessIdByName(LPCTSTR lpcszProc)
{
HANDLE hSnap;
PROCESSENTRY32 peProc;
DWORD dwRet = -1;
if((hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)) != INVALID_HANDLE_VALUE)
{
peProc.dwSize = sizeof(PROCESSENTRY32);
if(Process32First(hSnap, &peProc))
while(Process32Next(hSnap, &peProc))
if(!lstrcmp(lpcszProc, peProc.szExeFile))
dwRet = peProc.th32ProcessID;
}
CloseHandle(hSnap);
return dwRet;
}
BOOL InjectDll(DWORD dwPid, char* szDllPath)
{
DWORD dwMemSize;
HANDLE hProc;
LPVOID lpRemoteMem, lpLoadLibrary;
BOOL bRet = FALSE;
if((hProc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwPid)) != NULL)
{
dwMemSize = strlen(szDllPath);
if((lpRemoteMem = VirtualAllocEx(hProc, NULL, dwMemSize, MEM_COMMIT, PAGE_READWRITE)) != NULL)
if(WriteProcessMemory(hProc, lpRemoteMem, szDllPath, dwMemSize, NULL))
{
lpLoadLibrary = GetProcAddress(GetModuleHandleA("kernel32.dll"), "LoadLibraryA");
if(CreateRemoteThread(hProc, NULL, 0, (LPTHREAD_START_ROUTINE)lpLoadLibrary, lpRemoteMem, 0, NULL) != NULL)
{
bRet = TRUE;
}
cout << GetLastError();
}
}
CloseHandle(hProc);
return bRet;
}
int main()
{
char szProc[MAX_PATH], szDll[MAX_PATH];
char* szDllPath = (char*)malloc(MAX_PATH);
LPTSTR lpszProc = NULL;
for(;;)
{
cout << "Process: ";
cin >> szProc;
cout << "DLL: ";
cin >> szDll;
szDllPath = GetCurrentDir();
strcat_s(szDllPath, MAX_PATH, "\\");
strcat_s(szDllPath, MAX_PATH, szDll);
cout << "Waiting for process.. ." << szDllPath << " " << szDll << endl;
WaitForProcessToAppear(SzToLPCTSTR(szProc), 100);
if(InjectDll(GetProcessIdByName(SzToLPCTSTR(szProc)), szDllPath))
cout << "Injection Succeeded!" << endl;
else
cout << "Injection Failed!" << endl;
cout << "\n";
}
return 0;
經過大量的谷歌搜索後,我無法找到一個原因,爲什麼這不應該工作。
CreateRemoteThread在Windows 7下無法工作? 如果是這樣,我有沒有犯過明顯的錯誤?
我看到
這段代碼有很多bug。即使您沒有從api函數獲得FALSE返回,最相關的一個也會調用GetLastError。 – 2012-02-26 19:29:33
我認爲你還應該確保你以管理員的身份運行你的東西,而不是像普通用戶那樣運行你的東西,因爲UAC可能會與注入過程混淆。 – foxx1337 2012-02-26 22:58:01
與訪問相關的一個問題是,您不應該用'PROCESS_ALL_ACCESS'調用'OpenProcess'。使用所需的最小訪問權限進行調用。背後的原因記錄在這裏:http://msdn.microsoft.com/en-us/library/windows/desktop/ms684880(v=vs.85).aspx – 2012-02-27 14:11:13