我正在尝试在进程中注入DLL并在我的DLL中调用导出的函数。
使用该代码注入DLL:
HANDLE Proc;
char buf[50] = { 0 };
LPVOID RemoteString, LoadLibAddy;
if (!pID)
return false;
Proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pID);
if (!Proc)
{
sprintf_s(buf, "OpenProcess() failed: %d", GetLastError());
printf(buf);
return false;
}
LoadLibAddy = (LPVOID)GetProcAddress(GetModuleHandle(L"kernel32.dll"), "LoadLibraryA");
// Allocate space in the process for our DLL
RemoteString = (LPVOID)VirtualAllocEx(Proc, NULL, strlen(DLL_NAME), MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
// Write the string name of our DLL in the memory allocated
WriteProcessMemory(Proc, (LPVOID)RemoteString, DLL_NAME, strlen(DLL_NAME), NULL);
// Load our DLL
HANDLE hThread = CreateRemoteThread(Proc, NULL, 0, (LPTHREAD_START_ROUTINE)LoadLibAddy, (LPVOID)RemoteString, NULL, NULL);
我的DLL模块创建正常,就像您在Process Hacker(BootstrapDLL.exe)的图像中看到的那样:
我的导出功能也可以,就像您在Process Hacker(ImplantDotNetAssembly)上导出的功能列表中看到的那样:
我认为,问题发生在偏移计算上,以获取" ImplantDotNetAssembly"的地址,因为上面的所有内容都没问题,当我进行计算时,我得到"的地址。 ImplantDotNetAssembly",但当我再次调用CreateRemoteThread来调用它时,窗口"已停止工作......"显示窗口并停止进程。发生了什么事?
以下是偏移计算的代码:
DWORD_PTR hBootstrap = GetRemoteModuleHandle(ProcId, L"BootstrapDLL.exe");
DWORD_PTR offset = GetFunctionOffset(L"C:\\Users\\Acaz\\Documents\\Visual Studio 2013\\Projects\\Contoso\\Debug\\BootstrapDLL.exe", "ImplantDotNetAssembly");
DWORD_PTR fnImplant = hBootstrap + offset;
HANDLE hThread2 = CreateRemoteThread(Proc, NULL, 0, (LPTHREAD_START_ROUTINE)fnImplant, NULL, 0, NULL);
以下是函数GetRemoteModuleHandle和GetFunctionOffset:
DWORD_PTR GetFunctionOffset(const wstring& library, const char* functionName)
{
// load library into this process
HMODULE hLoaded = LoadLibrary(library.c_str());
// get address of function to invoke
void* lpInject = GetProcAddress(hLoaded, functionName);
// compute the distance between the base address and the function to invoke
DWORD_PTR offset = (DWORD_PTR)lpInject - (DWORD_PTR)hLoaded;
// unload library from this process
FreeLibrary(hLoaded);
// return the offset to the function
return offset;
}
DWORD_PTR GetRemoteModuleHandle(const int processId, const wchar_t* moduleName)
{
MODULEENTRY32 me32;
HANDLE hSnapshot = INVALID_HANDLE_VALUE;
// get snapshot of all modules in the remote process
me32.dwSize = sizeof(MODULEENTRY32);
hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, processId);
// can we start looking?
if (!Module32First(hSnapshot, &me32))
{
CloseHandle(hSnapshot);
return 0;
}
// enumerate all modules till we find the one we are looking for or until every one of them is checked
while (wcscmp(me32.szModule, moduleName) != 0 && Module32Next(hSnapshot, &me32));
// close the handle
CloseHandle(hSnapshot);
// check if module handle was found and return it
if (wcscmp(me32.szModule, moduleName) == 0)
return (DWORD_PTR)me32.modBaseAddr;
return 0;
}
如果有人知道发生了什么,我将非常感激!
我甚至无法调试"已停止工作。"错误。当我按下窗口上的DEBUG按钮时,错误再次抛出,一切都停止。
谢谢。
答案 0 :(得分:0)
永远不要注入托管程序集。如果由于某种原因必须将代码注入另一个进程,请使用带有NO C库或STATIC C库的本机代码。