Le processus de rétro-ingénierie

You know the concepts, ethics, and lab. Now you need a repeatable workflow so analysis is systematic, not random poking — it saves hours and produces real documentation.

Start by defining your goal: Is this file malicious? How does the license check work? What protocol does it speak? A clear question keeps you out of the weeds.

Next, triage the file for quick facts — its type, architecture, and obvious strings — before you commit to deep analysis.

Static analysis examines the binary without running it. Scan imports and strings for telltale API calls — networking, crypto, file I/O — to form hypotheses.

Dynamic analysis runs the binary in your isolated lab and watches behavior: files touched, registry keys, network calls. Static is the map; dynamic shows the roads driven.

Use both: static gives full coverage but obfuscation hides intent, while dynamic shows real behavior but only executed paths. Pros iterate between them.

RE is memory management for your brain — take structured notes on addresses, renamed functions, and confirmed facts. Your disassembler comments become a second memory.

Findings reshape the plan: a network call sends you back to static, a found string sends you to dynamic. The workflow is a loop, not a straight line.

Binaries are bottomless, so time-box each phase and stop once you've answered your goal. Log open questions for later instead of chasing every rabbit hole.

Analysis ends in a report: hashes and metadata for verification, key behaviors with evidence, indicators of compromise, and a confidence level per claim.

Throughout, honor your lab rules: only analyze what you're authorized to, snapshot the VM before running anything, and keep malware network-isolated.

What is the correct first step of a reverse engineering workflow?

You've got a real methodology: define the goal, triage, survey statically, confirm dynamically, iterate, take notes, time-box, and report with confidence levels.