Black: _hat.rar

If you were referring to a different "Black Hat" themed post or a specific file you found,

: Using specific techniques to manipulate the memory layout. Black _Hat.rar

: Implementing basic Rar1 and Rar3 encoders to gain control over read-write primitives. If you were referring to a different "Black

The post is well-regarded in the security community for its detailed breakdown of exploiting a vulnerability in how antivirus engines handle (often seen as .rar files). Key technical highlights from that "solid" post include: Black _Hat.rar