转:EasyHook远程代码注入

 

EasyHook远程代码注入

　　

    最近一段时间由于使用MinHook的API挂钩不稳定，经常因为挂钩地址错误而导致宿主进程崩溃。听同事介绍了一款智能强大的挂钩引擎EasyHook。它比微软的detours好的一点是它的x64注入支持是免费开源的。不想微软的detours，想搞x64还得购买。

    好了，闲话不多说，先下载EasyHook的开发库，当然有兴趣的同学可以下载源码进行学习。下载地址：http://easyhook.codeplex.com/releases/view/24401。我给的这个是2.6版本的。

    EasyHook提供了两种模式的注入管理。一种是托管代码的注入，另一种是非托管代码的注入。我是学习C++的，所以直接学习了例子中的非托管项目UnmanagedHook。里面给了一个简单的挂钩MessageBeep API的示例。我需要将其改造成支持远程注入的。下面先给出钩子DLL代码：

// dllmain.cpp : 定义 DLL 应用程序的入口点。
#include "stdafx.h"
#include "HookApi.h"
#include "easyhook.h"
#include "ntstatus.h"

ptrCreateFileW realCreateFileW = NULL;
ptrCreateFileA realCreateFileA = NULL;
HMODULE                 hKernel32 = NULL;
TRACED_HOOK_HANDLE      hHookCreateFileW = new HOOK_TRACE_INFO();
TRACED_HOOK_HANDLE      hHookCreateFileA = new HOOK_TRACE_INFO();
NTSTATUS                statue;
ULONG                   HookCreateFileW_ACLEntries[1] = {0};
ULONG                   HookCreateFileA_ACLEntries[1] = {0};

int PrepareRealApiEntry()
{
    OutputDebugString(L"PrepareRealApiEntry()\n");

    // 获取真实函数地址
    HMODULE hKernel32 = LoadLibrary(L"Kernel32.dll");
    if (hKernel32 == NULL)
    {
        OutputDebugString(L"LoadLibrary(L\"Kernel32.dll\") Error\n");
        return -6002;
    }
    OutputDebugString(L"LoadLibrary(L\"Kernel32.dll\") OK\n");

    realCreateFileW = (ptrCreateFileW)GetProcAddress(hKernel32, "CreateFileW");
    if (realCreateFileW == NULL)
    {
        OutputDebugString(L"(ptrCreateFileW)GetProcAddress(hKernel32, \"CreateFileW\") Error\n");
        return -6007;
    }
    OutputDebugString(L"(ptrCreateFileW)GetProcAddress(hKernel32, \"CreateFileW\") OK\n");

    realCreateFileA = (ptrCreateFileA)GetProcAddress(hKernel32, "CreateFileA");
    if (realCreateFileA == NULL)
    {
        OutputDebugString(L"(ptrCreateFileA)GetProcAddress(hKernel32, \"CreateFileA\") Error\n");
        return -6007;
    }
    OutputDebugString(L"(ptrCreateFileA)GetProcAddress(hKernel32, \"CreateFileA\") OK\n");

    return 0;
}

void DoHook()
{
    OutputDebugString(L"DoHook()\n");

    statue = LhInstallHook(realCreateFileW,
        MyCreateFileW,
        /*(PVOID)0x12345678*/NULL,
        hHookCreateFileW);
    if(!SUCCEEDED(statue))
    {
        switch (statue)
        {
        case STATUS_NO_MEMORY:
            OutputDebugString(L"STATUS_NO_MEMORY\n");
            break;
        case STATUS_NOT_SUPPORTED:
            OutputDebugString(L"STATUS_NOT_SUPPORTED\n");
            break;
        case STATUS_INSUFFICIENT_RESOURCES:
            OutputDebugString(L"STATUS_INSUFFICIENT_RESOURCES\n");
            break;
        default:
            WCHAR dbgstr[512] = {0};
            wsprintf(dbgstr, L"%d\n", statue);
            OutputDebugString(dbgstr);
        }
        OutputDebugString(L"LhInstallHook(GetProcAddress(hKernel32, \"CreateFileW\"),MyCreateFileW,(PVOID)0x12345678,hHookCreateFileW); Error\n");
        return;
    }
    OutputDebugString(L"Hook CreateFileW OK\n");

    statue = LhInstallHook(realCreateFileA,
        MyCreateFileA,
        /*(PVOID)0x12345678*/NULL,
        hHookCreateFileA);
    if(!SUCCEEDED(statue))
    {
        switch (statue)
        {
        case STATUS_NO_MEMORY:
            OutputDebugString(L"STATUS_NO_MEMORY\n");
            break;
        case STATUS_NOT_SUPPORTED:
            OutputDebugString(L"STATUS_NOT_SUPPORTED\n");
            break;
        case STATUS_INSUFFICIENT_RESOURCES:
            OutputDebugString(L"STATUS_INSUFFICIENT_RESOURCES\n");
            break;
        default:
            WCHAR dbgstr[512] = {0};
            wsprintf(dbgstr, L"%d\n", statue);
            OutputDebugString(dbgstr);
        }
        OutputDebugString(L"LhInstallHook(GetProcAddress(hKernel32, \"CreateFileA\"),MyCreateFileA,(PVOID)0x12345678,hHookCreateFileA); Error\n");
        return;
    }
    OutputDebugString(L"Hook CreateFileA OK\n");


        // 一定要调用这个函数，否则注入的钩子无法正常运行。
        LhSetExclusiveACL(HookCreateFileA_ACLEntries, 1, hHookCreateFileA);
    LhSetExclusiveACL(HookCreateFileW_ACLEntries, 1, hHookCreateFileW);

}

void DoneHook()
{
    OutputDebugString(L"DoneHook()\n");

    // this will also invalidate "hHook", because it is a traced handle...
    LhUninstallAllHooks();

    // this will do nothing because the hook is already removed...
    LhUninstallHook(hHookCreateFileA);
    LhUninstallHook(hHookCreateFileW);

    // now we can safely release the traced handle
    delete hHookCreateFileA;
    hHookCreateFileA = NULL;

    delete hHookCreateFileW;
    hHookCreateFileW = NULL;

    // even if the hook is removed, we need to wait for memory release
    LhWaitForPendingRemovals();
}

BOOL APIENTRY DllMain( HMODULE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
                     )
{
    switch (ul_reason_for_call)
    {
    case DLL_PROCESS_ATTACH:
        {
            OutputDebugString(L"DllMain::DLL_PROCESS_ATTACH\n");

            // 准备好原始地址与目的地址
            int errCode = PrepareRealApiEntry();
            if (errCode != 0)
            {
                OutputDebugString(L"PrepareRealApiEntry() Error\n");
                return FALSE;
            }

            // 开始挂钩
            DoHook();

            break;
        }
    case DLL_THREAD_ATTACH:
        {
            OutputDebugString(L"DllMain::DLL_THREAD_ATTACH\n");

            break;
        }
    case DLL_THREAD_DETACH:
        {
            OutputDebugString(L"DllMain::DLL_THREAD_DETACH\n");

            break;
        }

    case DLL_PROCESS_DETACH:
        {
            OutputDebugString(L"DllMain::DLL_PROCESS_DETACH\n");

            // 卸载钩子
            DoneHook();

            break;
        }
    }
    return TRUE;
}

<pre name="code" class="cpp">// HookSvr.cpp

#include "stdafx.h"
#include "HookApi.h"
#include "easyhook.h"

HANDLE WINAPI MyCreateFileW(
              __in     LPCWSTR lpFileName,
              __in     DWORD dwDesiredAccess,
              __in     DWORD dwShareMode,
              __in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes,
              __in     DWORD dwCreationDisposition,
              __in     DWORD dwFlagsAndAttributes,
              __in_opt HANDLE hTemplateFile
              )
{
    HANDLE hHandle = NULL;

    // 执行钩子
    if (realCreateFileW == NULL)
    {
        OutputDebugString(L"realCreateFileW is NULL\n");
        return INVALID_HANDLE_VALUE;
    }
    else
    {
        OutputDebugString(L"realCreateFileW is not NULL\n");
        hHandle = (realCreateFileW)(lpFileName, dwDesiredAccess, dwShareMode,
            lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);

        OutputDebugString(L"MyCreateFileW : ");
        OutputDebugString(lpFileName);
        OutputDebugString(L"\n");
    }

    return hHandle;
}

HANDLE WINAPI MyCreateFileA(
                  __in     LPCSTR lpFileName,
                  __in     DWORD dwDesiredAccess,
                  __in     DWORD dwShareMode,
                  __in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes,
                  __in     DWORD dwCreationDisposition,
                  __in     DWORD dwFlagsAndAttributes,
                  __in_opt HANDLE hTemplateFile
                  )
{
    HANDLE hHandle = NULL;

    // 执行钩子
    if (realCreateFileA == NULL)
    {
        OutputDebugString(L"realCreateFileA is NULL\n");
        return INVALID_HANDLE_VALUE;
    }
    else
    {
        OutputDebugString(L"realCreateFileA is not NULL\n");
        hHandle = (realCreateFileA)(lpFileName, dwDesiredAccess, dwShareMode,
            lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);

        OutputDebugString(L"MyCreateFileW : ");
        OutputDebugStringA(lpFileName);
        OutputDebugString(L"\n");
    }

    return hHandle;
}</pre><br>
钩子这一部分我弄了比较久，主要是API不熟悉，不过好在弄好了。
<pre></pre>
<p><br>
</p>
<p></p><pre name="code" class="cpp">// HookSvr.h

#pragma once
#include <Windows.h>

#ifndef _M_X64
#pragma comment(lib, "EasyHook32.lib")
#else
#pragma comment(lib, "EasyHook64.lib")
#endif

HANDLE WINAPI MyCreateFileW(
    __in     LPCWSTR lpFileName,
    __in     DWORD dwDesiredAccess,
    __in     DWORD dwShareMode,
    __in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes,
    __in     DWORD dwCreationDisposition,
    __in     DWORD dwFlagsAndAttributes,
    __in_opt HANDLE hTemplateFile
    );

typedef HANDLE (WINAPI *ptrCreateFileW)(
    __in     LPCWSTR lpFileName,
    __in     DWORD dwDesiredAccess,
    __in     DWORD dwShareMode,
    __in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes,
    __in     DWORD dwCreationDisposition,
    __in     DWORD dwFlagsAndAttributes,
    __in_opt HANDLE hTemplateFile
    );

extern ptrCreateFileW realCreateFileW;

HANDLE WINAPI MyCreateFileA(
    __in     LPCSTR lpFileName,
    __in     DWORD dwDesiredAccess,
    __in     DWORD dwShareMode,
    __in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes,
    __in     DWORD dwCreationDisposition,
    __in     DWORD dwFlagsAndAttributes,
    __in_opt HANDLE hTemplateFile
    );

typedef HANDLE (WINAPI *ptrCreateFileA)(
                                        __in     LPCSTR lpFileName,
                                        __in     DWORD dwDesiredAccess,
                                        __in     DWORD dwShareMode,
                                        __in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes,
                                        __in     DWORD dwCreationDisposition,
                                        __in     DWORD dwFlagsAndAttributes,
                                        __in_opt HANDLE hTemplateFile
                                        );

extern ptrCreateFileA realCreateFileA;</pre><br>
<br>
<p></p>
<p>接下来是注入工具，这里指提供核心代码。本来EasyHook还提供了一个叫<span style="color:black">Rh</span>InjectLibrary()方法直接注入，这种方法相当稳定，推荐使用。我本来也用它，但是发现注入会失败，所以就采用了比较通用的远程注入代码，如下：</p>
<pre name="code" class="cpp">BOOL RtlFileExists(WCHAR* InPath)
{
    HANDLE          hFile;

    if((hFile = CreateFileW(InPath, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
        return FALSE;

    CloseHandle(hFile);

    return TRUE;
}

BOOL SetPrivilege(LPCTSTR lpszPrivilege, BOOL bEnablePrivilege)
{
    TOKEN_PRIVILEGES tp;
    HANDLE hToken;
    LUID luid;

    if( !OpenProcessToken(GetCurrentProcess(),
        TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
        &hToken) )
    {
        return FALSE;
    }

    if( !LookupPrivilegeValue(NULL,             // lookup privilege on local system
        lpszPrivilege,    // privilege to lookup
        &luid) )          // receives LUID of privilege
    {
        return FALSE;
    }

    tp.PrivilegeCount = 1;
    tp.Privileges[0].Luid = luid;
    if( bEnablePrivilege )
        tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
    else
        tp.Privileges[0].Attributes = 0;

    // Enable the privilege or disable all privileges.
    if( !AdjustTokenPrivileges(hToken,
        FALSE,
        &tp,
        sizeof(TOKEN_PRIVILEGES),
        (PTOKEN_PRIVILEGES) NULL,
        (PDWORD) NULL) )
    {
        return FALSE;
    }

    if( GetLastError() == ERROR_NOT_ALL_ASSIGNED )
    {
        //The token does not have the specified privilege.
        return FALSE;
    }

    return TRUE;
}

typedef DWORD (WINAPI *PFNTCREATETHREADEX)
(
 PHANDLE                 ThreadHandle,
 ACCESS_MASK             DesiredAccess,
 LPVOID                  ObjectAttributes,
 HANDLE                  ProcessHandle,
 LPTHREAD_START_ROUTINE  lpStartAddress,
 LPVOID                  lpParameter,
 BOOL                   CreateSuspended,
 DWORD                   dwStackSize,
 DWORD                   dw1,
 DWORD                   dw2,
 LPVOID                  Unknown
 );

BOOL MyCreateRemoteThread(HANDLE hProcess, LPTHREAD_START_ROUTINE pThreadProc, LPVOID pRemoteBuf)
{
    HANDLE      hThread = NULL;
    FARPROC     pFunc = NULL;
    BOOL bHook;

    // 判断系统版本
    OSVERSIONINFO osvi;
    //BOOL bIsWindowsXPorLater;

    ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);

    GetVersionEx(&osvi);

    if (osvi.dwMajorVersion == 6)
    {
        bHook = TRUE;
    }
    else
    {
        bHook = FALSE;
    }

    if(bHook)    // Vista, 7, Server2008
    {
        pFunc = GetProcAddress(GetModuleHandle(L"ntdll.dll"), "NtCreateThreadEx");
        if( pFunc == NULL )
        {
            //GetLastError());
            return FALSE;
        }

        OutputDebugString(L"MyCreateRemoteThread");
        ((PFNTCREATETHREADEX)pFunc)(&hThread,
            0x1FFFFF,
            NULL,
            hProcess,
            pThreadProc,
            pRemoteBuf,
            FALSE,
            NULL,
            NULL,
            NULL,
            NULL);
        if( hThread == NULL )
        {
            return FALSE;
        }
    }
    else                    // 2000, XP, Server2003
    {
        hThread = CreateRemoteThread(hProcess,
            NULL,
            0,
            pThreadProc,
            pRemoteBuf,
            0,
            NULL);
        if( hThread == NULL )
        {
            return FALSE;
        }
    }

    if( WAIT_FAILED == WaitForSingleObject(hThread, INFINITE) )
    {
        return FALSE;
    }

    return TRUE;
}

BOOL InjectDll(DWORD dwPID, const wchar_t *szDllName)
{
    HANDLE hProcess = NULL;
    LPVOID pRemoteBuf = NULL;
    FARPROC pThreadProc = NULL;
    DWORD dwBufSize = wcslen(szDllName)*sizeof(wchar_t)+2;

    if ( !(hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwPID)) )
    {
        return FALSE;
    }

    pRemoteBuf = VirtualAllocEx(hProcess, NULL, dwBufSize,
        MEM_COMMIT, PAGE_READWRITE);

    WriteProcessMemory(hProcess, pRemoteBuf, (LPVOID)szDllName,
        dwBufSize, NULL);

    pThreadProc = GetProcAddress(GetModuleHandle(L"kernel32.dll"),
        "LoadLibraryW");

    if( !MyCreateRemoteThread(hProcess, (LPTHREAD_START_ROUTINE)pThreadProc, pRemoteBuf) )
    {
        return FALSE;
    }

    VirtualFreeEx(hProcess, pRemoteBuf, dwBufSize, MEM_RELEASE);
    CloseHandle(hProcess);
    return TRUE;
}

int DoInject(DWORD aPid, const WCHAR *aFullpath)
{
    if (wcslen(aFullpath) <= 0)
    {
        return -1;
    }

    //判断dll是否存在
    HANDLE hFile = CreateFile(aFullpath, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,NULL, OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
    if(hFile != INVALID_HANDLE_VALUE)
    {
        DWORD dwsize = GetFileSize(hFile, NULL);
        CloseHandle(hFile);
        if (dwsize < 10)
        {
            return -2;
        }
    }
    else
    {
        return -3;
    }

    BOOL bSuc=SetPrivilege(SE_DEBUG_NAME, TRUE);
    bSuc=InjectDll((DWORD)aPid, aFullpath);
    if (bSuc)
    {
        return -4;
    }

    return 0;
}


// 真实注入的时候应该这样调用
DoInject(m_processId, L"E:\\src\\easyhook\\trunk\\Debug\\x86\\HookSvr.dll");


</pre><br>
这样就能保证注入的钩子能正常工作了。

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4楼 SpiritMFC 2013-03-26 15:43发表 [回复]

你好~ 能提供能运行的源码嘛？
我用你的方法正常exe可以hook成功，
但是DLL注入后钩子无法工作。
困扰数天的问题了。
求帮助！
还有 C++的话这个库能实现全局钩子嘛？

Re: baggiowangyu 2013-03-29 09:24发表 [回复]

回复SpiritMFC：我给的例子就是源代码了哇，那时候研究到那里就没有继续往下了。应该是你注入之后挂钩写的不对导致的。

你指的全局钩子是什么概念？全局消息钩子么？目前我知道的是这个可以实现指定进程的挂钩。

3楼 lsssml1990 2012-10-26 12:22发表 [回复]

这个代码可以直接用不？

2楼 baggiowangyu 2012-06-23 14:02发表 [回复]

一同学习，一同学习

1楼 Wentasy 2012-06-19 11:46发表 [回复]

不错，学习了。