Get the Whitepaper called Structured Exception Handler Exploitation. The SEH exploitation technique was publicly documented by David Litchfield September, 2003. At a high-level, the SEH overwrite technique uses a software vulnerability to execute arbitrary code by abusing the 32-bit exception dispatching facilities provided by Windows. At a functional level, an SEH overwrite is generally accomplished by using a stack-based buffer. This document explains SEH details while exploiting a real case.
You can download it from the following link: https://packetstormsecurity.com/files/download/102812/structured_exception_handler_exploitation.pdf
Source: https://packetstormsecurity.com/files/102812/Structured-Exception-Handler-Exploitation.html