# mandiant/flare-floss

FLARE Obfuscated String Solver - Automatically extract obfuscated strings from malware.

Repository: https://github.com/mandiant/flare-floss
Canonical: https://ross.abutalabs.com/products/flare-floss
Language: Python
License: Apache-2.0
License Family: permissive
Topics: malware, deobfuscation, strings, flare, malware-analysis, gsoc-2026
Last push: 2026-08-26T12:03:48+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 3836, "days_push": 7, "days_rel": 706, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4138, forks 541 (observed 2026-08-28T04:08:36.214920+00:00)

## What it is
FLOSS (FLARE Obfuscated String Solver) is a Python CLI tool from Mandiant that automatically extracts and deobfuscates strings from malware binaries using advanced static analysis. It recovers static, stack, tight, and decoded strings, plus language-specific strings from Go and Rust binaries.

## Use cases
- extract obfuscated strings from malware binaries
- deobfuscate stack strings in an executable
- find hidden C2 domains in a malware sample
- extract strings from Go and Rust binaries
- enhance basic static analysis of unknown binaries
- decode strings built at runtime on the stack

## When to choose
- analyzing malware samples during triage or reverse engineering
- strings.exe output misses strings because they are obfuscated or stack-constructed
- you need automated deobfuscation of decoded strings in binaries
- inspecting Go or Rust executables with non-standard string formats

## When to avoid
- you need dynamic analysis or sandbox detonation of malware
- the binary is packed and you haven't unpacked it first
- you need interactive disassembly rather than string extraction

## Facets
- artifact type: cli-tool
- maturity: active
- function: reverse-engineering, security, parser, developer-tools
- domain: security, reverse-engineering, developer-tools
- platform: python, cli, windows
- tags: malware-analysis, deobfuscation, static-analysis, strings-extraction, flare, linux, macos

## Member repositories
- mandiant/flare-floss (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:36.214920+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 2026-08-29T18:23:00.329884+00:00, confidence not recorded.
  - readme: https://github.com/mandiant/flare-floss (fetched 2026-08-28T04:08:36.214920+00:00, sha 96b4de4cef5e)
  - registry_pypi: https://pypi.org/pypi/flare-floss/json (fetched 2026-08-29T09:13:59.735406+00:00, sha a673145d7bd8)
- Data as of 2026-08-30T08:39:29.467469+00:00.