从windows 10上的64位进程获取32位进程上的ModuleFileNameEx

为了从文件nt路径获取有效的win32文件路径-最简单的方法-添加 L"\\\\?\\globalroot" \\?\globalroot CreateFileW 从 \??\ 目录和 globalroot 符号链接是否在 \??\ 让as跳转到nt命名空间的根。

例如- \Device\HarddiskVolume9\Windows\SysWOW64\ntdll.dll \\?\globalroot\Device\HarddiskVolume9\Windows\SysWOW64\ntdll.dll 是的有效win32路径 创建文件W -此api转换众所周知的前缀 \\?\ \??\ \??\globalroot\Device\HarddiskVolume9\Windows\SysWOW64\ntdll.dll 到内核。在分析此名称后处理符号链接时 全局根 \设备\硬盘卷9\Windows\SysWOW64\ntdll。dll

因此,如果我们需要在中使用有效的win32路径 创建文件W -只需将此前缀附加到nt路径。但是,一些shell32 api不接受此表单路径。在用户界面上看起来也不太好。如果我们想要得到DOS驱动器号形式的路径(这是有效win32路径的子集),我们可以使用 IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATH MOUNTDEV_NAME mountmgr。h )输出缓冲区为 MOUNTMGR_VOLUME_PATHS MOUNTDEV_名称 \设备\硬盘卷9\Windows\SysWOW64\ntdll。dll

• \Device\HarddiskVolume9
• \Windows\SysWOW64\ntdll.dll

GetFileInformationByHandleEx 具有 FileNameInfo -我们在输出中获得了文件系统路径。有了这个,我们可以使用 wcsstr 用于单独的设备路径。此外,如果我们打开文件句柄,我们可以在调用中使用它 GetFinalPathNameByHandleW VOLUME_NAME_DOS IOCTL\u MOUNTMGR\u QUERY\u DOS\u VOLUME\u路径 . + 打开/关闭装载管理器。

但通常nt文件路径从 \Device\HarddiskVolumeX

因此,首先我们需要open mount manager:

#include <mountmgr.h>
HANDLE hMountManager = CreateFile(MOUNTMGR_DOS_DEVICE_NAME, 
    0, FILE_SHARE_VALID_FLAGS, 0, OPEN_EXISTING, 0, 0);

然后我们可以运行下一个代码:

void dumpModules(HANDLE hMountManager, HANDLE hProcess)
{
    ULONG cb = 0, cbNeeded = 16;

    volatile static UCHAR guz;
    PVOID stack = alloca(guz);
    HMODULE *hMods, hmod;

__continue:

    // cumulative allocate memory in stack, not need free it
    cb = RtlPointerToOffset(hMods = (HMODULE*)alloca(cbNeeded - cb), stack);

    if (EnumProcessModulesEx(hProcess, hMods, cb, &cbNeeded, LIST_MODULES_32BIT))
    {
        if (cb < cbNeeded)
        {
            goto __continue;
        }

        if (cbNeeded /= sizeof(HMODULE))
        {
            //i use hard coded size buffers, for reduce code and show main idea
#define FILE_NAME_INFO_buffer_size  FIELD_OFFSET(FILE_NAME_INFO, FileName[MAX_PATH])
#define MOUNTDEV_NAME_buffer_size  FIELD_OFFSET(MOUNTDEV_NAME, Name[MAX_PATH])
#define MOUNTMGR_VOLUME_PATHS_buffer_size  FIELD_OFFSET(MOUNTMGR_VOLUME_PATHS, MultiSz[64])

            // + space for 0 at the end
            PFILE_NAME_INFO pfni = (PFILE_NAME_INFO)alloca(FILE_NAME_INFO_buffer_size + sizeof(WCHAR));

            PMOUNTMGR_VOLUME_PATHS pmvp = (PMOUNTMGR_VOLUME_PATHS)alloca(MOUNTMGR_VOLUME_PATHS_buffer_size);
            PMOUNTDEV_NAME pmdn = (PMOUNTDEV_NAME)alloca(MOUNTDEV_NAME_buffer_size);

            static WCHAR globalroot[] = L"\\\\.\\globalroot";

            alloca(sizeof(globalroot));
            PWSTR win32Path = pmdn->Name - RTL_NUMBER_OF(globalroot) + 1;

            memcpy(win32Path, globalroot, sizeof(globalroot));
            USHORT NameLength = pmdn->NameLength;

            do 
            {
                hmod = *hMods++;

                if (GetMappedFileNameW(hProcess, hmod, pmdn->Name, MAX_PATH))
                {
                    DbgPrint("%p %S\n",hmod, pmdn->Name);

                    PWSTR c = 0;

                    static const WCHAR HarddiskVolume[] = L"\\Device\\HarddiskVolume";

                    // fast way
                    if (!memcmp(pmdn->Name, HarddiskVolume, sizeof(HarddiskVolume) - sizeof(WCHAR)))
                    {
                        c = wcschr(pmdn->Name + RTL_NUMBER_OF(HarddiskVolume) - 1, '\\');
                    }
                    // else - for demo
                    {
                        pmdn->NameLength = NameLength;

                        HANDLE hFile = CreateFile(win32Path, 0, FILE_SHARE_VALID_FLAGS, 0, OPEN_EXISTING, 0, 0);

                        if (hFile != INVALID_HANDLE_VALUE)
                        {
                            //++ just for demo
                            WCHAR DosPath[MAX_PATH];
                            if (GetFinalPathNameByHandleW(hFile, DosPath, RTL_NUMBER_OF(DosPath), VOLUME_NAME_DOS))
                            {
                                DbgPrint("%S\n", DosPath);
                            }
                            RtlGetLastNtStatus();
                            //-- just for demo

                            BOOL fOk = GetFileInformationByHandleEx(hFile, FileNameInfo, pfni, FILE_NAME_INFO_buffer_size);

                            CloseHandle(hFile);

                            if (fOk)
                            {
                                // FileName not 0 terminated
                                pfni->FileName[pfni->FileNameLength/sizeof(WCHAR)] = 0;

                                c = wcsstr(pmdn->Name, pfni->FileName);
                            }
                        }

                    }

                    if (c)
                    {
                        pmdn->NameLength = (USHORT)RtlPointerToOffset(pmdn->Name, c);

                        if (DeviceIoControl(hMountManager, IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATH,
                            pmdn, MOUNTDEV_NAME_buffer_size, 
                            pmvp, MOUNTMGR_VOLUME_PATHS_buffer_size, &cb, NULL))
                        {
                            DbgPrint("%S%S\n", pmvp->MultiSz, c);
                        }
                    }
                }

            } while (--cbNeeded);
        }
    }
}

记事本的演示输出:

0000000000170000 \Device\HarddiskVolume9\Windows\SysWOW64\notepad.exe
\\?\C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
0000000077A90000 \Device\HarddiskVolume9\Windows\SysWOW64\ntdll.dll
\\?\C:\Windows\SysWOW64\ntdll.dll
0000000075460000 \Device\HarddiskVolume9\Windows\SysWOW64\kernel32.dll
\\?\C:\Windows\SysWOW64\kernel32.dll
C:\Windows\SysWOW64\kernel32.dll
0000000074A30000 \Device\HarddiskVolume9\Windows\SysWOW64\KernelBase.dll
\\?\C:\Windows\SysWOW64\KernelBase.dll
C:\Windows\SysWOW64\KernelBase.dll
00000000749B0000 \Device\HarddiskVolume9\Windows\SysWOW64\advapi32.dll
\\?\C:\Windows\SysWOW64\advapi32.dll