# kyleavery/AceLdr

Cobalt Strike UDRL for memory scanner evasion.

Repository: https://github.com/kyleavery/AceLdr
Canonical: https://ross.abutalabs.com/products/aceldr
Language: C
License: MIT
License Family: permissive
Last push: 2024-06-04T16:45:42+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 1484, "days_push": 820, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1031, forks 184 (observed 2026-08-28T04:03:18.017920+00:00)

## What it is
AceLdr is a position-independent reflective loader (UDRL) for Cobalt Strike written in C, designed to evade memory scanners like Moneta, PE-sieve, and BeaconEye. It employs dynamic heap encryption, code obfuscation, return address spoofing, and sleep-based memory encryption to hide beacon artifacts.

## Use cases
- evade memory scanners when running Cobalt Strike beacons
- load beacon shellcode with a user-defined reflective loader
- encrypt beacon memory during sleep to bypass scanning tools
- bypass BeaconEye, Moneta, PE-sieve, and Hunt-Sleeping-Beacons detections
- spoof return addresses to defeat stack-based detection
- implement sleep obfuscation for red team operations

## When to choose
- you need a Cobalt Strike UDRL that defeats modern memory scanners
- your red team engagement requires evading tools like Moneta or PE-sieve
- you want heap encryption and return address spoofing out of the box

## When to avoid
- you use loaders that require the shellcode thread to stay alive
- you need a loader for frameworks other than Cobalt Strike
- you are not authorized to use offensive security tooling

## Facets
- artifact type: library
- maturity: active
- function: security, cryptography, reverse-engineering
- domain: security, penetration-testing
- platform: windows, cpp
- tags: cobalt-strike, udrl, memory-scanner-evasion, red-team, offensive-security, beacon, sleep-obfuscation, position-independent-code

## Member repositories
- kyleavery/AceLdr (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:18.017920+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 2026-08-30T07:07:27.551043+00:00, confidence not recorded.
  - readme: https://github.com/kyleavery/AceLdr (fetched 2026-08-28T04:03:18.017920+00:00, sha 8e13ea4f28f4)
- Data as of 2026-08-30T08:39:29.467469+00:00.