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

 

Debugging Structures

WOW64_CONTEXT