Thread Environment Block (Debugging Notes)
The Thread Environment Block (TEB structure) holds context information for a thread.
In the following versions of Windows, the offset of the 32-bit TEB address within the 64-bit TEB is 0. This can be used to directly access the 32-bit TEB of a WOW64 thread. This might change in later versions of Windows
|Windows Vista||Windows Server 2008|
|Windows 7||Windows Server 2008 R2|
|Windows 8||Windows Server 2012|
|Windows 8.1||Windows Server 2012 R2|