Forest Global Training Partners

Cyber Risks · Unit 42 Palo Alto Networks

Using IDAPython to Make Your Life Easier: Part 3

Summary: Unit 42's third IDAPython post shows how to set a conditional breakpoint in IDA Pro so the debugger stops only when a target library loads, rather than on every library load. The example loads rundll32.exe with dd.dll, sets a breakpoint at 0x7C91ADFB after NtMapViewOfSection, and uses SetBptCnd() with Python code that iterates loaded modules, prints a message, removes the initial breakpoint, and returns True when dd.dll is found.

Why it matters: The manual alternative is resuming execution after every library load to check which module just arrived, a loop that repeats until the analyst happens to catch dd.dll; the script collapses that into one command and then sets a breakpoint on the 'Setting' export automatically.

Read the original at Unit 42 Palo Alto Networks ↗

Topics
Malware
Related