googleprojectzero/winafl
A fork of AFL for fuzzing Windows binaries observed · 2026-08-28
Health v2 · maintenance only
65/100
- Activity 72
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3709
- days_rel: n/a
- days_push: 173
- n_releases_24m: 0
Adoption not part of the score
2604 stars · 560 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
WinAFL is a Windows fork of American Fuzzy Lop (AFL) for coverage-guided fuzzing of Windows binaries, including closed-source black-box targets. It uses dynamic instrumentation via DynamoRIO or TinyInst, Intel PT hardware tracing, or Syzygy static instrumentation, with persistent fuzzing to reduce process restart overhead.
Use cases
- fuzz windows binaries for vulnerabilities
- fuzz closed-source black-box windows applications
- find memory corruption bugs in windows software
- coverage-guided fuzzing without recompiling the target
- fuzz a specific function in a windows dll
- discover cves in windows desktop software
When to choose
- you need to fuzz windows executables or dlls
- you cannot recompile the target with source instrumentation
- you want proven coverage-guided fuzzing on windows
- you want to fuzz a single target function persistently
When to avoid
- you are fuzzing on linux or macos where original AFL or AFL++ works
- you need to fuzz source-available targets with full compile-time instrumentation
- you need structured protocol or kernel fuzzing with specialized tooling
Facets
cli-tool · maturity active
fuzzing security testing security penetration-testing developer-tools windows windows cli afl coverage-guided-fuzzing dynamorio tinyinst intel-pt black-box-fuzzing persistent-fuzzing vulnerability-discovery
1 source
- readme: https://github.com/googleprojectzero/winafl · fetched 2026-08-28 · fd7879fa9762
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| googleprojectzero/winafl | main | 65 |
For agents
markdown · JSON · MCP: product_card(name="googleprojectzero/winafl")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem