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Advanced EPO: Deeper, longer and harder (Part 1)

Electrical Ordered Freedom #3
August 2011

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In the recent zine Decepticons, Tiberio published the nice article [1] about entry-point obscuring and listed there a number of ways in which the virus could capture the control from application. Most of them are related to API calls - replacing the API call or replace the callback in the API's parameter list (the first is known under Linux as PLT redirection [2]) other techniques explores different cavities which could be used to place there the get-me-to-the-virus instruction. There is something common for all of these methods - no one will tell you when the virus will gain the control and will it get it at all. I think we have to do something about this.

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