# Memory Mapping

Memory-mapping is **a mechanism that maps a portion of a file, or an entire file, on disk to a range of addresses within an application's address space**. The application can then access files on disk in the same way it accesses dynamic memory.

## Unmaping **mechanism** 

To unmap the PE file manually we must make Raw Addr =  Virtual Addr and Raw Size = Virtual size

PE-bear used to unmap the PE file

<figure><img src="/files/eH3RoqvSitvONJoaS36i" alt=""><figcaption><p>mapped</p></figcaption></figure>

<figure><img src="/files/3xwiUWBRQUye4OLVxy2j" alt=""><figcaption><p>unmapped</p></figcaption></figure>


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