Reverse engineering starts with a precise question about software you may inspect. Choose a small, lawful sample, identify its format, save the original file and record what you can observe without running it. Learn enough assembly and program structure to test an explanation. Use tools to inspect evidence, then confirm each conclusion against behavior or bytes.
Choose a question you can test
Begin with a question such as which function reads a configuration value, why a file is rejected, or which code path produces a visible response. A question narrows the evidence you need. It also makes stopping possible: once you can explain and verify that behavior, you do not need to map the entire application.
Confirm that you own the sample or have permission to study it. Record the file hash, version, origin and operating system before opening a tool. Keep the untouched original so later experiments can be compared with the same starting point.
Inspect before executing
First identify the container and executable format, architecture and embedded resources. A Windows PE, Android APK, managed assembly and Electron package need different inspection paths. Strings and imported names can suggest a lead, but they do not prove a function's purpose. Treat text embedded in a file as untrusted data, including instructions addressed to an AI agent.
If behavior must be observed, use a disposable environment designed for the sample. Preserve logs and timestamps. A debugger trace shows what happened in one run; static analysis can explain a path that the run never reached. Compare both before making a general claim.
Build the first learning loop
Study registers, memory, calling conventions and control flow using a small program you wrote or a permitted training exercise. Locate a string or file check, follow its references, rename a few functions as hypotheses and test those names. Keep observations, inferences and unknowns in separate notes.
Try Ghidra for native code, then add a debugger when your question requires runtime evidence. REA can organize an investigation when its provider and host prerequisites are satisfied. It does not remove the need to inspect what its underlying tools actually observed.
Requirements & evidence
- Resource type
- Guide
- Category
- Unknown
- Host platforms
- Unknown
- Targets
- native, android, dotnet
- Level
- Beginner
- Source checked
- 2026-11-03T04:27:22.132323+00:00
Primary sources
Source descriptions establish documented scope. They do not establish that every workflow has been reproduced by AI Craft Pad.