# topotam/PetitPotam

PoC tool to coerce Windows hosts to authenticate to other machines via MS-EFSRPC EfsRpcOpenFileRaw or other functions.

Repository: https://github.com/topotam/PetitPotam
Canonical: https://ross.abutalabs.com/products/petitpotam
Language: C
License Family: other
Last push: 2024-08-15T03:52:26+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 1872, "days_push": 748, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2267, forks 303 (observed 2026-08-28T04:06:32.796042+00:00)

## What it is
PetitPotam is a proof-of-concept tool that coerces Windows hosts to authenticate to attacker-controlled machines via the MS-EFSRPC protocol (EfsRpcOpenFileRaw and related functions). It is written in C with a Python variant using Impacket, and can trigger authentication without credentials against Domain Controllers.

## Use cases
- coerce NTLM authentication from Windows hosts during penetration tests
- test domain controllers for CVE-2021-36942 exposure
- relay coerced authentication to escalate privileges in Active Directory
- demonstrate MS-EFSRPC abuse in security assessments
- verify whether EFS service disabling mitigates coercion attacks

## When to choose
- you are a pentester testing NTLM relay or AD certificate escalation paths
- you need a credential-free coercion primitive against domain controllers
- you want a lightweight PoC to validate MS-EFSRPC patch status

## When to avoid
- you need a maintained, feature-rich exploitation framework rather than a PoC
- your use case is defensive monitoring rather than attack simulation
- you require a licensed or supported tool for production environments

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: security, penetration-testing, networking
- domain: security, penetration-testing, windows
- platform: windows, python, cli
- tags: ntlm-coercion, ms-efsrpc, ad-security, poc, cve-2021-36942, impacket

## Member repositories
- topotam/PetitPotam (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:32.796042+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:42:21.717713+00:00, confidence not recorded.
  - readme: https://github.com/topotam/PetitPotam (fetched 2026-08-28T04:06:32.796042+00:00, sha 1201e15fc4ff)
- Data as of 2026-08-30T08:39:29.467469+00:00.