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Analysing the byte entropy of a FAT formatted disk

Zoomed up entropy graph of image
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Over at the Honeynet Project they used to run security competitions which were quite a bit of fun. I remembered one in particular which I looked at but hadn’t completed. It dealt with the forensic investigation of a floppy disk. I was tinkering

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Adding a malicious system call to the Linux kernel – Rootkit

00000244
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Introduction Today I am adding a malicious system call to the Linux kernel which will allow the caller to do something they cannot normally do in user mode. When attacking a Linux box our goal is usually to become root;

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Posted in Security