TeamViewer # 3

main.c

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#include <Windows.h>
#include <Winternl.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
 
 
VOID *GetAPI(char *lib,char *name)
{
HMODULE mod;
CHAR path[MAX_PATH];
CHAR fname[MAX_PATH];
GetSystemDirectoryA(path,MAX_PATH);
sprintf(fname,"%s\\%s",path,lib);
mod=LoadLibraryA(fname);
if (mod)
{
return GetProcAddress(mod,name);
}
return 0;
}
 
 
DWORD
(APIENTRY
*fGetFileVersionInfoSizeW)(
        __in        LPCWSTR lptstrFilename, /* Filename of version stamped file */
        __out_opt LPDWORD lpdwHandle       /* Information for use by GetFileVersionInfo */
        );
 
 
DWORD
APIENTRY
GetFileVersionInfoSizeW(
        __in        LPCWSTR lptstrFilename, /* Filename of version stamped file */
        __out_opt LPDWORD lpdwHandle       /* Information for use by GetFileVersionInfo */
        )
{
fGetFileVersionInfoSizeW=GetAPI("VERSION.dll","GetFileVersionInfoSizeW");
if (!fGetFileVersionInfoSizeW)
{
return 0;
}
return fGetFileVersionInfoSizeW(lptstrFilename,lpdwHandle);
 
}
 
 
BOOL
(APIENTRY
*fGetFileVersionInfoW)(
        __in                LPCWSTR lptstrFilename, /* Filename of version stamped file */
        __reserved          DWORD dwHandle,          /* Information from GetFileVersionSize */
        __in                DWORD dwLen,             /* Length of buffer for info */
        __out_bcount(dwLen) LPVOID lpData            /* Buffer to place the data structure */
        );
 
BOOL
APIENTRY
GetFileVersionInfoW(
        __in                LPCWSTR lptstrFilename, /* Filename of version stamped file */
        __reserved          DWORD dwHandle,          /* Information from GetFileVersionSize */
        __in                DWORD dwLen,             /* Length of buffer for info */
        __out_bcount(dwLen) LPVOID lpData            /* Buffer to place the data structure */
        )
{
fGetFileVersionInfoW=GetAPI("VERSION.dll","GetFileVersionInfoW");
if (!fGetFileVersionInfoW)
{
return 0;
}
return fGetFileVersionInfoW(lptstrFilename,dwHandle,dwLen,lpData);
}
 
BOOL
(APIENTRY
*fVerQueryValueW)(
        __in LPCVOID pBlock,
        __in LPCWSTR lpSubBlock,
        __deref_out_xcount("buffer can be PWSTR or DWORD*") LPVOID * lplpBuffer,
        __out PUINT puLen
        );
 
BOOL
APIENTRY
VerQueryValueW(
        __in LPCVOID pBlock,
        __in LPCWSTR lpSubBlock,
        __deref_out_xcount("buffer can be PWSTR or DWORD*") LPVOID * lplpBuffer,
        __out PUINT puLen
        )
{
fVerQueryValueW=GetAPI("VERSION.dll","VerQueryValueW");
if (!fVerQueryValueW)
{
return 0;
}
return fVerQueryValueW(pBlock,lpSubBlock,lplpBuffer,puLen);
}
 
 
BOOL
(APIENTRY
*fGetFileVersionInfoA)(
        __in                LPCSTR lptstrFilename, /* Filename of version stamped file */
        __reserved          DWORD dwHandle,          /* Information from GetFileVersionSize */
        __in                DWORD dwLen,             /* Length of buffer for info */
        __out_bcount(dwLen) LPVOID lpData            /* Buffer to place the data structure */
        );
BOOL
APIENTRY
GetFileVersionInfoA(
        __in                LPCSTR lptstrFilename, /* Filename of version stamped file */
        __reserved          DWORD dwHandle,          /* Information from GetFileVersionSize */
        __in                DWORD dwLen,             /* Length of buffer for info */
        __out_bcount(dwLen) LPVOID lpData            /* Buffer to place the data structure */
        )
{
fGetFileVersionInfoA=GetAPI("VERSION.dll","GetFileVersionInfoA");
if (!fGetFileVersionInfoA)
{
return 0;
}
return fGetFileVersionInfoA(lptstrFilename,dwHandle,dwLen,lpData);
}
 
 
 
BOOL (APIENTRY *fGetFileVersionInfoExW)(__in DWORD dwFlags,
                                    __in LPCWSTR lpwstrFilename,
                                    __reserved DWORD dwHandle,
                                    __in DWORD dwLen,
                                    __out_bcount(dwLen) LPVOID lpData);
BOOL APIENTRY GetFileVersionInfoExW(__in DWORD dwFlags,
                                    __in LPCWSTR lpwstrFilename,
                                    __reserved DWORD dwHandle,
                                    __in DWORD dwLen,
                                    __out_bcount(dwLen) LPVOID lpData)
{
fGetFileVersionInfoExW=GetAPI("VERSION.dll","GetFileVersionInfoExW");
if (!fGetFileVersionInfoExW)
{
return 0;
}
return fGetFileVersionInfoExW(dwFlags,lpwstrFilename,dwHandle,dwLen,lpData);
}
 
 
DWORD (APIENTRY *fGetFileVersionInfoSizeExA)(__in DWORD dwFlags, __in LPCSTR lpwstrFilename, __out LPDWORD lpdwHandle);
DWORD APIENTRY GetFileVersionInfoSizeExA(__in DWORD dwFlags, __in LPCSTR lpwstrFilename, __out LPDWORD lpdwHandle)
{
fGetFileVersionInfoSizeExA=GetAPI("VERSION.dll","GetFileVersionInfoSizeExA");
if (!fGetFileVersionInfoSizeExA)
{
return 0;
}
return fGetFileVersionInfoSizeExA(dwFlags,lpwstrFilename,lpdwHandle);
 
}
 
DWORD (APIENTRY *fGetFileVersionInfoSizeExW)(__in DWORD dwFlags, __in LPCWSTR lpwstrFilename, __out LPDWORD lpdwHandle);
DWORD APIENTRY GetFileVersionInfoSizeExW(__in DWORD dwFlags, __in LPCWSTR lpwstrFilename, __out LPDWORD lpdwHandle)
{
fGetFileVersionInfoSizeExW=GetAPI("VERSION.dll","GetFileVersionInfoSizeExW");
if (!fGetFileVersionInfoSizeExW)
{
return 0;
}
return fGetFileVersionInfoSizeExW(dwFlags,lpwstrFilename,lpdwHandle);
}
 
 
DWORD
(APIENTRY
*fGetFileVersionInfoSizeA)(
        __in        LPCSTR lptstrFilename, /* Filename of version stamped file */
        __out_opt LPDWORD lpdwHandle       /* Information for use by GetFileVersionInfo */
        );
DWORD
APIENTRY
GetFileVersionInfoSizeA(
        __in        LPCSTR lptstrFilename, /* Filename of version stamped file */
        __out_opt LPDWORD lpdwHandle       /* Information for use by GetFileVersionInfo */
        )
{
fGetFileVersionInfoSizeA=GetAPI("VERSION.dll","GetFileVersionInfoSizeA");
if (!fGetFileVersionInfoSizeA)
{
return 0;
}
return fGetFileVersionInfoSizeA(lptstrFilename,lpdwHandle);
}
 
 
BOOL
(APIENTRY
*fVerQueryValueA)(
        __in LPCVOID pBlock,
        __in LPCSTR lpSubBlock,
        __deref_out_xcount("buffer can be PWSTR or DWORD*") LPVOID * lplpBuffer,
        __out PUINT puLen
        );
 
BOOL
APIENTRY
VerQueryValueA(
        __in LPCVOID pBlock,
        __in LPCSTR lpSubBlock,
        __deref_out_xcount("buffer can be PWSTR or DWORD*") LPVOID * lplpBuffer,
        __out PUINT puLen
        )
{
fVerQueryValueA=GetAPI("VERSION.dll","VerQueryValueA");
if (!fVerQueryValueA)
{
return 0;
}
return fVerQueryValueA(pBlock,lpSubBlock,lplpBuffer,puLen);
}
 
BOOL WINAPI DllMain(
    HINSTANCE hinstDLL,  // handle to DLL module
    DWORD fdwReason,     // reason for calling function
    LPVOID lpReserved )  // reserved
{
    // Perform actions based on the reason for calling.
    switch( fdwReason )
    {
        case DLL_PROCESS_ATTACH:
            MessageBoxA(0,"I'm Hacker!","Hi",0);
            break;
 
        case DLL_THREAD_ATTACH:
         // Do thread-specific initialization.
            break;
 
        case DLL_THREAD_DETACH:
         // Do thread-specific cleanup.
            break;
 
        case DLL_PROCESS_DETACH:
         // Perform any necessary cleanup.
            break;
    }
    return TRUE;  // Successful DLL_PROCESS_ATTACH.
}