add wabmig.exe and build.bat

yml/OSBinaries/Wabmig.yml

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+---
+Name: Wabmig.exe
+Description: Microsoft (R) Contacts Import Tool
+Author: 6en6ar
+Created: 2026-10-08
+Commands:
+  - Command: wabmig.exe
+    Description: Change HKLM\Software\Microsoft\WAB\DLLPath and execute DLL of choice, rename it to wab32.dll
+    Usecase: Execute dll file. Bypass defensive counter measures
+    Category: Execute
+    Privileges: Administrator
+    MitreID: T1218
+    OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
+    Tags:
+      - Execute: DLL
+Full_Path:
+  - Path: C:\Program Files\Windows Mail\wabmig.exe
+  - Path: C:\Program Files (x86)\Windows Mail\wabmig.exe
+Detection:
+  - Sigma: https://github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/registry/registry_set/registry_set_wab_dllpath_reg_change.yml
+  - IOC: wabmig.exe should normally never be used
+Resources:
+  - Link: https://localh0st.run/post/windowsaddressbook/
+Acknowledgement:
+  - Person: Arnaut N.
+    Handle: '@6en6ar'

yml/OSScripts/Build_pester.yml

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+---
+Name: Build.bat
+Description: Used as part of the Powershell pester testing framework
+Author: 6en6ar
+Created: 2026-09-26
+Commands:
+  - Command: Build.bat ;{PATH:.exe}
+    Description: Execute code using Build.bat. Example here executes specified executable.
+    Usecase: Proxy execution
+    Category: Execute
+    Privileges: User
+    MitreID: T1216
+    OperatingSystem: Windows 10, Windows 11
+    Tags:
+      - Execute: EXE
+Full_Path:
+  - Path: C:\Program Files\WindowsPowerShell\Modules\Pester\<VERSION>\Build.bat
+Resources:
+  - Link: https://devblogs.microsoft.com/scripting/what-is-pester-and-why-should-i-care/
+Acknowledgement:
+  - Person: Arnaut N.
+    Handle: '@6en6ar'