摘錄在windows core編程
函數原形：
HANDLE CreateRemoteThread(
HANDLE hProcess,
PSECURITY_ATTRIBUTES psa,
DWORD dwStackSize,
PTHREAD_STRART_ROUTINE pfnStartAddr,
PVOID pvParam,
DWORD fdwCreate,
PDWORD pdwThreadId);
范例：
插入
BOOL WINAPI InjectLib(DWORD dwProcessId, PCTSTR pszLibFile) {
BOOL fOk = FALSE; // Assume that the function fails
HANDLE hProcess = NULL, hThread = NULL;
PTSTR pszLibFileRemote = NULL;
__try {
// Get a handle for the target process.
hProcess = OpenProcess(
PROCESS_QUERY_INFORMATION | // Required by Alpha
PROCESS_CREATE_THREAD | // For CreateRemoteThread
PROCESS_VM_OPERATION | // For VirtualAllocEx/VirtualFreeEx
PROCESS_VM_WRITE, // For WriteProcessMemory
FALSE, dwProcessId);
if (hProcess == NULL) __leave;
// Calculate the number of bytes needed for the DLL's pathname
int cch = 1 + lstrlen(pszLibFile);
int cb = cch * sizeof(TCHAR);
// Allocate space in the remote process for the pathname
pszLibFileRemote = (PTSTR)
VirtualAllocEx(hProcess, NULL, cb, MEM_COMMIT, PAGE_READWRITE);
if (pszLibFileRemote == NULL) __leave;
// Copy the DLL's pathname to the remote process's address space
if (!WriteProcessMemory(hProcess, pszLibFileRemote,
(PVOID) pszLibFile, cb, NULL)) __leave;
// Get the real address of LoadLibraryW in Kernel32.dll
PTHREAD_START_ROUTINE pfnThreadRtn = (PTHREAD_START_ROUTINE)
GetProcAddress(GetModuleHandle(TEXT("Kernel32")),
#ifdef UNICODE
"LoadLibraryW");
#else
"LoadLibraryA");
#endif
if (pfnThreadRtn == NULL) __leave;
// Create a remote thread that calls LoadLibraryW(DLLPathname)
hThread = CreateRemoteThread(hProcess, NULL, 0,
pfnThreadRtn, pszLibFileRemote, 0, NULL);
if (hThread == NULL) __leave;
// Wait for the remote thread to terminate
WaitForSingleObject(hThread, INFINITE);
fOk = TRUE; // Everything executed successfully
}
__finally { // Now, we can clean everthing up
// Free the remote memory that contained the DLL's pathname
if (pszLibFileRemote != NULL)
VirtualFreeEx(hProcess, pszLibFileRemote, 0, MEM_RELEASE);
if (hThread != NULL)
CloseHandle(hThread);
if (hProcess != NULL)
CloseHandle(hProcess);
}
return(fOk);
}
取消插入：
BOOL WINAPI EjectLib(DWORD dwProcessId, PCTSTR pszLibFile) {
BOOL fOk = FALSE; // Assume that the function fails
HANDLE hthSnapshot = NULL;
HANDLE hProcess = NULL, hThread = NULL;
__try {
// Grab a new snapshot of the process
hthSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, dwProcessId);
if (hthSnapshot == NULL) __leave;
// Get the HMODULE of the desired library
MODULEENTRY32 me = { sizeof(me) };
BOOL fFound = FALSE;
BOOL fMoreMods = Module32First(hthSnapshot, &me);
for (; fMoreMods; fMoreMods = Module32Next(hthSnapshot, &me)) {
fFound = (lstrcmpi(me.szModule, pszLibFile) == 0) ||
(lstrcmpi(me.szExePath, pszLibFile) == 0);
if (fFound) break;
}
if (!fFound) __leave;
// Get a handle for the target process.
hProcess = OpenProcess(
PROCESS_QUERY_INFORMATION | // Required by Alpha
PROCESS_CREATE_THREAD |
PROCESS_VM_OPERATION, // For CreateRemoteThread
FALSE, dwProcessId);
if (hProcess == NULL) __leave;
// Get the real address of LoadLibraryW in Kernel32.dll
PTHREAD_START_ROUTINE pfnThreadRtn = (PTHREAD_START_ROUTINE)
GetProcAddress(GetModuleHandle(TEXT("Kernel32")), "FreeLibrary");
if (pfnThreadRtn == NULL) __leave;
// Create a remote thread that calls LoadLibraryW(DLLPathname)
hThread = CreateRemoteThread(hProcess, NULL, 0,
pfnThreadRtn, me.modBaseAddr, 0, NULL);
if (hThread == NULL) __leave;
// Wait for the remote thread to terminate
WaitForSingleObject(hThread, INFINITE);
fOk = TRUE; // Everything executed successfully
}
__finally { // Now we can clean everything up
if (hthSnapshot != NULL)
CloseHandle(hthSnapshot);
if (hThread != NULL)
CloseHandle(hThread);
if (hProcess != NULL)
CloseHandle(hProcess);
}
return(fOk);
}
posted on 2007-10-19 09:00
zarra 閱讀(261)
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