At the end of 2016, while checking for updates in Microsoft’s bounty program, I saw a reference to a new defense mechanism called “Return Flow Guard” (RFG). Since at that time I just finished the work on Liberation Guard, I took the time to check if can bypass this new protection method. This post will describe my attack on Microsoft’s Return Flow Guard, an attack that achieves full bypass of the protection method.
Eyal Itkin 