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Astute Explorer (GCHQ Challenge 5 – 10)

Continuation for http://www.malwaretech.com/2014/09/astute-explorer-gchq-challenge-1-5.html Vulnerability On line 26 the function fails if exactly BLOCK_SIZE is not read, this means if there is data available but less than BLOCK_SIZE is present, or the read fails, the function will return NULL. On failure the function does not free szBuffer so there’s a pretty serious …

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Astute Explorer (GCHQ Challenge 1 – 5)

GCHQ has been having trouble finding experienced hackers and programmers to work for them, so they’ve put out a lot of  fun challenges. The idea is that people who do well in the online challenges are selected to do face to face challenges, the top few people from the face …