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38 lines
2.0 KiB
Markdown
38 lines
2.0 KiB
Markdown
# capa usage
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See `capa -h` for all supported arguments and usage examples.
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## tips and tricks
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- [match only rules by given author or namespace](#only-run-selected-rules)
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- [IDA Pro capa explorer](#capa-explorer)
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- [IDA Pro rule generator](#rule-generator)
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### only run selected rules
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Use the `-t` option to run rules with the given metadata value (see the rule fields `rule.meta.*`).
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For example, `capa -t william.ballenthin@mandiant.com` runs rules that reference Willi's email address (probably as the author), or
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`capa -t communication` runs rules with the namespace `communication`.
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### IDA Pro integrations
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You can run capa from within IDA Pro. Run `capa/main.py` via `File - Script file...` (or ALT + F7).
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When running in IDA, capa uses IDA's disassembly and file analysis as its backend.
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These results may vary from the standalone version that uses vivisect.
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IDA's analysis is generally a bit faster and more thorough than vivisect's, so you might prefer this mode.
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When run under IDA, capa supports both Python 2 and Python 3 interpreters.
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If you encounter issues with your specific setup, please open a new [Issue](https://github.com/fireeye/capa/issues).
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Additionally, capa comes with two IDA Pro plugins located in the `capa/ida` directory: the explorer and the rule generator.
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#### capa explorer
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The capa explorer allows you to interactively display and browse capabilities capa identified in a binary.
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As you select rules or logic, capa will highlight the addresses that support its analysis conclusions.
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We like to use capa to help find the most interesting parts of a program, such as where the C2 mechanism might be.
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#### rule generator
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The rule generator helps you to easily write new rules based on the function you are currently analyzing in your IDA disassembly view.
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It shows the features that capa can extract from the function, and lets you quickly pull these into a rule template.
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You'll still have to provide the logic structures (`and`, `or`, `not`, etc.) but the features will be prepared for you.
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