We've then gone and used an appropriate tool (e.g. We've loaded a big blob of 0x41414141 values into our payload, and eip has been set to 0x41414141, so we know it's exploitable. We'll skip all the details, but let's just say we're using a stack buffer overflow vulnerability. When combined it becomes exceedingly difficult to exploit vulnerabilities in applications using shellcode or return-oriented programming (ROP) techniques.įirst, let's look at how a normal vulnerability might be exploited. Data Execution Prevention (DEP) prevents certain memory sectors, e.g. ![]() ![]() ![]() ![]() It does this by randomly offsetting the location of modules and certain in-memory structures. Address Space Layout Randomisation (ASLR) is a technology used to help prevent shellcode from being successful.
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