Question

What is the trap flag approach for detecting debuggers?

a.

It enables the trap flag in the current process and checks for raised exceptions

b.

It sets its own handler for int 1 in the interrupt descriptor table (IDT)

c.

It checks for the presence of the SoftICE kernel device

d.

It uses the NtQuerySystemInformation native API to check for kernel debuggers

Posted under Reverse Engineering

Answer: (a).It enables the trap flag in the current process and checks for raised exceptions Explanation:The trap flag approach for detecting debuggers enables the trap flag in the current process and checks for raised exceptions.

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