peview分析

IDT

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IDT空间不足以添加新IID结构体

整体移动IDT

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image.png

通过观察可发现data段中有足够空余，原书中提到rdata段，但因为编译器的缘故，vs2017编译后rdata剩余空间极小不足以容纳IDT。因此移到RAW 12310处。
此处注意添加IID时，相应地址应为RVA而不是RAW

修改IMPORT TABLE

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image.png

原IMPORT TABLE地址为12310将其修改为移动后IDT地址，这里同样注意是RVA

完成

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win10以管理员权限运行exe

myhack3.dll

#include "stdio.h"
#include "windows.h"
#include "shlobj.h"
#include "Wininet.h"
#include "tchar.h"

#pragma comment(lib, "Wininet.lib")

#define DEF_BUF_SIZE            (4096)
#define DEF_URL                 L"http://www.naver.com/index.html"
#define DEF_INDEX_FILE          L"\\index.html"

HWND g_hWnd = NULL;

#ifdef __cplusplus
extern "C" {
#endif
__declspec(dllexport) void dummy()
{
    return;
}
#ifdef __cplusplus
}
#endif

BOOL DownloadURL(LPCTSTR szURL, LPCTSTR szFile)
{
    BOOL            bRet = FALSE;
    HINTERNET       hInternet = NULL, hURL = NULL;
    BYTE            pBuf[DEF_BUF_SIZE] = {0,};
    DWORD           dwBytesRead = 0;
    FILE            *pFile = NULL;
    errno_t         err = 0;

    hInternet = InternetOpen(L"ReverseCore", 
                             INTERNET_OPEN_TYPE_PRECONFIG, 
                             NULL, 
                             NULL, 
                             0);
    if( NULL == hInternet )
    {
        OutputDebugString(L"InternetOpen() failed!");
        return FALSE;
    }

    hURL = InternetOpenUrl(hInternet,
                           szURL,
                           NULL,
                           0,
                           INTERNET_FLAG_RELOAD,
                           0);
    if( NULL == hURL )
    {
        OutputDebugString(L"InternetOpenUrl() failed!");
        goto _DownloadURL_EXIT;
    }

    if( err = _tfopen_s(&pFile, szFile, L"wt") )
    {
        OutputDebugString(L"fopen() failed!");
        goto _DownloadURL_EXIT;
    }

    while( InternetReadFile(hURL, pBuf, DEF_BUF_SIZE, &dwBytesRead) )
    {
        if( !dwBytesRead )
            break;

        fwrite(pBuf, dwBytesRead, 1, pFile);
    }

    bRet = TRUE;

_DownloadURL_EXIT:
    if( pFile )
        fclose(pFile);

    if( hURL )
        InternetCloseHandle(hURL);

    if( hInternet )
        InternetCloseHandle(hInternet);

    return bRet;
}

BOOL CALLBACK EnumWindowsProc(HWND hWnd, LPARAM lParam)
{
    DWORD dwPID = 0;

    GetWindowThreadProcessId(hWnd, &dwPID);

    if( dwPID == (DWORD)lParam )
    {
        g_hWnd = hWnd;
        return FALSE;
    }

    return TRUE;
}

HWND GetWindowHandleFromPID(DWORD dwPID)
{
    EnumWindows(EnumWindowsProc, dwPID);

    return g_hWnd;
}

BOOL DropFile(LPCTSTR wcsFile)
{
    HWND            hWnd = NULL;
    DWORD           dwBufSize = 0;
    BYTE            *pBuf = NULL; 
    DROPFILES       *pDrop = NULL;
    char            szFile[MAX_PATH] = {0,};
    HANDLE          hMem = 0;

    WideCharToMultiByte(CP_ACP, 0, wcsFile, -1,
                        szFile, MAX_PATH, NULL, NULL);

    dwBufSize = sizeof(DROPFILES) + strlen(szFile) + 1;
    
    if( !(hMem = GlobalAlloc(GMEM_ZEROINIT, dwBufSize)) )
    {
        OutputDebugString(L"GlobalAlloc() failed!!!");
        return FALSE;
    }

    pBuf = (LPBYTE)GlobalLock(hMem);

    pDrop = (DROPFILES*)pBuf; 
    pDrop->pFiles = sizeof(DROPFILES);
    strcpy_s((char*)(pBuf + sizeof(DROPFILES)), strlen(szFile)+1, szFile);

    GlobalUnlock(hMem);

    if( !(hWnd = GetWindowHandleFromPID(GetCurrentProcessId())) )
    {
        OutputDebugString(L"GetWndHandleFromPID() failed!!!");
        return FALSE;
    }

    PostMessage(hWnd, WM_DROPFILES, (WPARAM)pBuf, NULL);

    return TRUE;
}

DWORD WINAPI ThreadProc(LPVOID lParam)
{
    TCHAR szPath[MAX_PATH] = {0,};
    TCHAR *p = NULL;

    OutputDebugString(L"ThreadProc() start...");

    GetModuleFileName(NULL, szPath, sizeof(szPath));
    
    if( p = _tcsrchr(szPath, L'\\') )
    {
        _tcscpy(p+1, DEF_INDEX_FILE);

        OutputDebugString(L"DownloadURL()");
        if( DownloadURL(DEF_URL, szPath) )
        {
            OutputDebugString(L"DropFlie()");
            DropFile(szPath);
        }
    }

    OutputDebugString(L"ThreadProc() end...");

    return 0;
}

BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
    switch( fdwReason )
    {
        case DLL_PROCESS_ATTACH : 
            CloseHandle(CreateThread(NULL, 0, ThreadProc, NULL, 0, NULL));
            break;
    }
   
    return TRUE;
}

#include "windows.h"
#include "stdio.h"

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

TCHAR szAppName[] = L"TextView" ;
TCHAR szFile[MAX_PATH] = {0,};
TCHAR szMsg[2048] = {0,};

#define MAX_BUF_SIZE (32768)

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
    HWND       hwnd ;
    MSG        msg ;
    WNDCLASSEX wndclass ;

    wndclass.cbSize        = sizeof(wndclass);
    wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
    wndclass.lpfnWndProc   = WndProc ;
    wndclass.cbClsExtra    = 0;
    wndclass.cbWndExtra    = 0;
    wndclass.hInstance     = hInstance ;
    wndclass.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wndclass.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName  = NULL ;
    wndclass.lpszClassName = szAppName ;
    wndclass.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);

    RegisterClassEx(&wndclass);

    hwnd = CreateWindow(
                szAppName, szAppName,
                WS_OVERLAPPEDWINDOW,
                CW_USEDEFAULT, CW_USEDEFAULT,
                CW_USEDEFAULT, CW_USEDEFAULT,
                NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, iCmdShow);
    UpdateWindow(hwnd); 

    while( GetMessage(&msg, NULL, 0, 0) )
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam ;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    static HWND hwndEdit ;
    HFONT hFont;

    switch(iMsg)
    {
    case WM_CREATE :
        hwndEdit = CreateWindow(L"Edit", NULL,
                        WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL |
                        WS_BORDER | ES_LEFT | ES_MULTILINE |
                        ES_AUTOHSCROLL | ES_AUTOVSCROLL,
                        0, 0, 0, 0,
                        hwnd,(HMENU) 1,
                       ((LPCREATESTRUCT)lParam)->hInstance, NULL);

        hFont=CreateFont(16,0,0,0,0,0,0,0,0,0,0,0,0,L"Courier New");
        SendMessage(hwndEdit, WM_SETFONT, (WPARAM)hFont, (LPARAM)FALSE);

        DragAcceptFiles(hwnd, TRUE);

        return 0;
    case WM_DROPFILES :
        if( DragQueryFile((HDROP)wParam, 0, szFile, MAX_PATH) )
        {
            HANDLE hFile = CreateFile(szFile, GENERIC_READ, FILE_SHARE_READ, 
                                NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
            if( hFile == INVALID_HANDLE_VALUE )
            {
                wsprintf(szMsg, L"file(\"%s\") open error!!! [%d]\n", szFile, GetLastError());
                MessageBox(hwndEdit, szMsg, szAppName, MB_OK);
                return 0;
            }

            DWORD dwBytesRead = 0;
            char *pBuf = new char[MAX_BUF_SIZE];
            ZeroMemory(pBuf, MAX_BUF_SIZE);

            ReadFile(hFile, pBuf, MAX_BUF_SIZE, &dwBytesRead, NULL);

            SetWindowTextA(hwndEdit, pBuf);

            wsprintf(szMsg, L"TextView (%s)", szFile);
            SetWindowText(hwnd, szMsg);

            delete []pBuf;

            CloseHandle(hFile);
        }

        return 0;

    case WM_SETFOCUS :
        SetFocus(hwndEdit);
        return 0;

    case WM_SIZE : 
        MoveWindow(hwndEdit, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
        return 0;

    case WM_DESTROY :
        PostQuitMessage(0);
        return 0;
    }

    return DefWindowProc(hwnd, iMsg, wParam, lParam);
}