Dynamic binary instrumentation (DBI) with DynamoRio

This blog provides a practical guide to using DynamoRIO for dynamic binary instrumentation on Windows, explaining DR’s architecture (code and trace caches), setup, and step-by-step client development using extensions like drmgr and drwrap for tasks such as module load logging, instruction tracing, and function wrapping. It compares DBI frameworks and demonstrates how DBI aids malware analysis and anti-anti-analysis through runtime patching, tracing, and memory dumping, validated with tests including shellcode execution, TLS interception, anti-debug checks, exception handling, timing and loop behavior, and self‑modifying code.