getcap tips — authorized file-capability literacy
getcap helps authorized labs sample file capability literacy on hosts they own. Pair with setcap-tips, strace-tips, lsof-tips. Prefer lab VMs and syllabus boxes — never scan foreign filesystems without permission. (Distinct from Mandiant capa rule pages.)
Snapshot
| Field | Value |
|---|---|
| Surface | getcap tip checklist |
| Job | Authorized file-capability literacy |
| setcap peer | setcap-tips |
| strace peer | strace-tips |
| lsof peer | lsof-tips |
| Note | Not Mandiant capa |
Tip checklist (authorized only)
- Confirm you may inspect file capabilities on the host (lab VM / syllabus box you own or were given access to).
- Prefer short, syllabus-approved getcap samples — never scan foreign trees.
- Record short factual notes; quote short Evidence (path, =cap_… — redact private layout).
- Optional: authorized set → setcap-tips.
- Optional: syscall view → strace-tips.
- Optional: open files → lsof-tips.
- Redact absolute home paths, capability strings that embed secrets, hostnames, and inventory labels if policy requires.
- Stop at literacy — no privilege-escalation / bypass / unauthorized-access cookbooks.
Allowed framing
- Classroom labs reading getcap samples on authorized hosts.
- Binding short factual notes as Evidence.
- Documenting expected vs observed file capabilities for authorized inventory notes.
- Comparing getcap ↔ setcap peer tip pages under one binder.
Scope we will not cover
- No crack/pirate/keygen via getcap.
- No capability-abuse / privilege-escalation PoCs.
- No credential-theft via getcap against foreign hosts.
- No intentional getcap scans against hosts you do not own.
Beginner path (authorized only)
- Obtain one syllabus-approved lab host you control or may inspect.
- Run a short getcap sample on a lab binary; quote success.
- Bind notes as Evidence; redact sensitive paths.
- Optional: compare with setcap-tips / strace-tips.
- Stop at literacy — no attack cookbooks.
- Prefer authorized, redacted Evidence.
- Use setcap peer tip pages when the syllabus asks.
- No exploit, crack, or unauthorized-access framing.
For legal, authorized and educational use only.
FAQ
What is a "getcap tip" page in BinBench framing?
A checklist for sampling authorized file-capability literacy Evidence on hosts you own or were given syllabus access to — not a cookbook for attacking foreign hosts.
How does this relate to setcap-tips?
setcap-tips covers setting capabilities under authorization. This page zooms on a general getcap tip checklist for reading capability bits — it does not overwrite that page.
Can I run getcap across production trees I do not own?
No. Authorization first. BinBench will not publish unauthorized-access recipes.
Does this teach exploit / privilege-escalation / bypass PoCs via getcap?
No. Mentions of exploit/bypass appear only as refusals. Authorized literacy only.
Does this teach credential theft via getcap?
No. Redact absolute paths that leak private layout, capability strings tied to secrets, and hostnames before sharing excerpts.