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DEFCON Quals CTF

Author Information

hj

LegitBS

Description:

This CB accepts a 4 byte data length and then that many bytes of data.

A frequency graph is then generated based upon the bytes sent.

Vulnerability

The stack has a statically sized buffer of 512 bytes. If a user sends greater than that then they can gain control of execution.

Challenges

This is a very basic challenge and should not present much difficulty. The primary purpose is for it to serve as an example for a type 1 vulnerability.