Pylabview的使用: 还原labview exe内的VI文件

测试前, 我们首先自己创建个labveiw工程, 并打包生成exe. 我这里用labview2018,

注意, 高级[生成] 那里的[启用调试] 不要勾上.  默认也是不勾的.

exe准备好后, 所有的准备工作就完成了.

开始破解exe 

1.  用7zip 来打开exe , 查看里面的资源

提取里面的 "2" 这个资源块到 pylabview 的 build文件夹内,

使用readRSRC.py 读取"2" 中的labview文件, 解压出bin和xml文件.

 python readrsrc.py -x -i "2"

可以在文件夹中看到得到了.  2_lvzp.bin 和 2_strsh25000.bin

我们用7zip解压这个2_lvzp.bin文件, 得到demo.vi文件了.

此时用labveiw打开这个vi文件, 可以发现 程序框图 是灰色的, 不能查看程序

当然了, 编译后的exe, 会自动剔除程序框图, 需要修复后才能查看程序框图.

如果你编译工程的时候 选择了[ 启用调试 ] 功能, 那么恭喜你, 你的vi代码被别人轻易拿到了. 到这一步是可以看到源码了.

下面是修复这个vi文件:

我们来解析这个资源块, 

 python readrsrc.py -x -i "demo.vi"

可以看到文件夹内多了好多以demo开头的文件

从这里开始就出问题了, 我估计是解压"2"的时候那两个 Warining 引起的. 

后续需要再确认下.

本文的操作来自这里的讨论:

https://lavag.org/topic/21233-exe-back-to-buildable-project/page/3/

As you can see, the VI is in runnable state and behaves without any errors. My steps to reproduce:

1. Unpacked lvlibp with 7-Zip unarchiver (as I'm on Windows currently) and pulled out "2" file (LIBPLBVW resource).

2. Extracted the inner resource blocks with readRSRC.py -x -i "2" command, got 2.xml, 2_DATA0.bin to 2_DATA4.bin and 2_LVzp.bin files.

3. Unpacked 2_LVzp.bin with an unarchiver, got NI_Embedded_Library.xml and Untitled 1.vi files.

4. Extracted the inner resource blocks from Untitled 1.vi with readRSRC.py -x -i "Untitled 1.vi" command, got Untitled 1.xml and a bunch of various resource sections.

5. Renamed 2_DATA0.bin (from step 2) as Untitled 1_VCTP.bin and placed it near Untitled 1.xml.

6. Added the following text to the end of Untitled 1.xml (before the last </RSRC> tag):

  <VCTP>
    <!-- VI Consolidated Types -->
    <Section Index="0" Format="bin" File="Untitled 1_VCTP.bin" />
  </VCTP>

7. Packed the .xml and all the resources into a single VI with readRSRC.py -c -m "Untitled 1.xml" command, got Untitled 1.vi.

8. Extracted the inner resource blocks from Untitled 1.vi (again!) with readRSRC.py -x -i "Untitled 1.vi" command, got Untitled 1.xml and a bunch of various resource sections (is done to get VCTP processed correctly).

9. Opened Untitled 1.xml and removed everything from <LIBN> to </LIBN> (including the tags as well) changed the library name extension from .lvlibp to .lvlib (between <LIBN></LIBN> tags). To wit, this line

<Library>Untitled Library 1.lvlibp</Library>

should be turned into this

<Library>Untitled Library 1.lvlib</Library>

10. Packed the .xml and all the resources into a single VI with readRSRC.py -c -m "Untitled 1.xml" command, got Untitled 1.vi.

11. Renamed NI_Embedded_Library.xml (from step 3) to Untitled Library 1.lvlib.

12. Opened Untitled Library 1.lvlib in a text editor and altered the lib URL to point to the new location. To wit, this line

<Item Name="Untitled 1.vi" Type="VI" URL="Untitled 1.vi"/>

should be turned into this

<Item Name="Untitled 1.vi" Type="VI" URL="../Untitled 1.vi"/>

13. Opened the VI (LabVIEW did the library reload from the new path and reported), opened .lvlib.

14. In Project Explorer untied the VI from the library w/ RMB -> Remove from Library menu option, saved the both files w/ File -> Save option.

Now the VI runs fine, so it might be a time to simplify this tutorial a little