Debugging Techniques Glossary
Debugging technique terms cover methods from basic to advanced.
Software Breakpoint
Breakpoint implemented by replacing the target instruction with INT 3 (0xCC). Most common but easily detected.
Hardware Breakpoint
Breakpoint using CPU debug registers (DR0-DR7). No code modification, harder to detect.
Memory Breakpoint
Breakpoint triggered by modifying page table attributes (read-only/no-access) when the target address is accessed.
Conditional Breakpoint
Breakpoint with a condition expression that only triggers when the condition is met.
Single Step (Step Into)
Executing one instruction at a time, including entering function calls. Implemented via Trap Flag.
Step Over
Executing one instruction without entering function calls, breaking after the function returns.
API Hook
Technique of replacing or intercepting API function entries to monitor or modify behavior.
DLL Injection
Technique of loading a custom DLL into a target process address space for code injection or extension.
Code Cave
Unused memory regions in executables that can be exploited for code injection.
Understanding these concepts helps in better using VT Debugger's features.
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