{"id":47936970,"url":"https://github.com/jubnzv/multifuzz","last_synced_at":"2026-04-04T07:45:23.807Z","repository":{"id":342178570,"uuid":"1172533621","full_name":"jubnzv/multifuzz","owner":"jubnzv","description":"Multi-engine fuzzing orchestrator for Rust (AFL++, honggfuzz, libFuzzer)","archived":false,"fork":false,"pushed_at":"2026-04-03T08:06:58.000Z","size":421,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2026-04-04T07:45:22.441Z","etag":null,"topics":["aflplusplus","fuzzing","honggfuzz","libfuzzer","rust"],"latest_commit_sha":null,"homepage":"","language":"Rust","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/jubnzv.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2026-03-04T12:20:51.000Z","updated_at":"2026-04-03T08:07:02.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/jubnzv/multifuzz","commit_stats":null,"previous_names":["jubnzv/multifuzz"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/jubnzv/multifuzz","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jubnzv%2Fmultifuzz","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jubnzv%2Fmultifuzz/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jubnzv%2Fmultifuzz/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jubnzv%2Fmultifuzz/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/jubnzv","download_url":"https://codeload.github.com/jubnzv/multifuzz/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jubnzv%2Fmultifuzz/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":31392187,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-04-04T04:26:24.776Z","status":"ssl_error","status_checked_at":"2026-04-04T04:23:34.147Z","response_time":60,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["aflplusplus","fuzzing","honggfuzz","libfuzzer","rust"],"created_at":"2026-04-04T07:45:22.690Z","updated_at":"2026-04-04T07:45:23.794Z","avatar_url":"https://github.com/jubnzv.png","language":"Rust","funding_links":[],"categories":[],"sub_categories":[],"readme":"# multifuzz\n\nMulti-engine fuzzing orchestrator for Rust. Runs AFL++, honggfuzz, and libfuzzer in parallel with automatic corpus synchronization.\n\n**Features:**\n1. **Unified Rust API** to set up a harness for all three fuzzers (see below)\n2. **Corpus synchronization** between engines with dynamic input handling. Leverages built-in fuzzer features for synchronization.\n3. **Single configuration file** for all fuzzer instances — everything is 100% explicit; the orchestrator does not introduce any implicit configuration options or environment variables\n4. **No overhead**: no UI, no extra tools\n\nSimplifies Rust harness implementation and replaces Makefiles/custom scripts for running complex fuzzing campaigns.\n\n## Installation\n\nInstall the fuzzing toolchains you are going to use:\n\n```sh\ncargo install cargo-afl\ncargo install honggfuzz\n```\n\nThen clone the repository and install the `multifuzz` binary:\n\n```sh\ngit clone https://github.com/jubnzv/multifuzz\ncd multifuzz\ncargo install --path .\n```\n\n## Usage\n\n### 1. Create the fuzzing harness\n\nWrite a fuzz harness using the `fuzz!` macro:\n\n```rust\nuse multifuzz::fuzz;\n\nfn main() {\n    fuzz!(|data: \u0026[u8]| {\n        // test your code here\n    });\n}\n```\n\nStructured input via `Arbitrary` is also supported:\n\n```rust\nfuzz!(|data: MyStruct| {\n    // data is deserialized automatically\n});\n```\n\n### 2. Write a configuration file\n\nCampaigns are configured via a TOML file (`multifuzz.toml` by default, or `--config \u003cpath\u003e`). See `multifuzz.toml.example` for a full reference.\n\n```toml\n[fuzz]\ntarget = \"my_target\"\ncorpus = \"./corpus\"\noutput = \"./output\"\ntimeout = 10\nsync_interval = 60  # min\ndictionaries = [\"./dict.dict\"]\n\n# Per-worker AFL++ configuration. No hidden defaults — everything explicit.\n# [fuzz.afl.all.env] sets base env vars for every AFL worker.\n# [fuzz.afl.workerN]  overrides for specific worker N (0=main, 1+=secondary).\n# Worker env = all.env + workerN.env merged (worker wins on conflict).\n[fuzz.afl.all.env]\nAFL_AUTORESUME = \"1\"\nAFL_FAST_CAL = \"1\"\nAFL_FORCE_UI = \"1\"\nAFL_IGNORE_UNKNOWN_ENVS = \"1\"\nAFL_CMPLOG_ONLY_NEW = \"1\"\nAFL_DISABLE_TRIM = \"1\"\nAFL_NO_WARN_INSTABILITY = \"1\"\nAFL_FUZZER_STATS_UPDATE_INTERVAL = \"10\"\nAFL_IGNORE_SEED_PROBLEMS = \"1\"\n\n[fuzz.afl.worker0.env]\nAFL_FINAL_SYNC = \"1\"\n\n[fuzz.afl.worker2.env]\nAFL_CUSTOM_MUTATOR_LIBRARY = \"/path/to/mutator.so\"\n```\n\n### 3. Use CLI to start and manage the campaign\n\n```sh\n# Build all fuzzer binaries\nmultifuzz build\n\n# Run the campaign\nmultifuzz fuzz\n\n# List running workers\nmultifuzz worker ps\n\n# Kill a specific worker\nmultifuzz worker kill slave1\n\n# Start a stopped worker\nmultifuzz worker start slave1\n\n# Clean up artifacts (lockfile, temp files, output)\nmultifuzz clean\n\n# Replay a crash or directory of inputs\nmultifuzz run my_target -i output/my_target/afl/master/crashes/ -r\n```\n\n## License\n\nApache-2.0\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjubnzv%2Fmultifuzz","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjubnzv%2Fmultifuzz","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjubnzv%2Fmultifuzz/lists"}