mirror of
https://github.com/shadow1ng/fscan.git
synced 2026-09-22 03:10:42 +08:00
ZacharyZcRandr00t
2c2ca6ace3
* add CVE-2026-24061 detect logic (#562) * add CVE-2026-24061 detect logic * fix(telnet): 修复 errcheck 警告，统一错误处理风格 --------- Co-authored-by: ZacharyZcR <[email protected]> * fix: 修复 Hub 广播 data race 和端口扫描潜在死锁，清理死代码 - hub.go: broadcast 路径 RLock 改 Lock，修复并发 delete/close 竞争 - port_scan.go: pool.Invoke 失败时释放 wg 和 semaphore，防止死锁 - web_scanner.go: 删除只写不读的 fingerprintCache - webtitle.go: 移除对已删除 SetFingerprints 的调用 - keylogger.go: 删除未使用的 stopChan 和 isRunning 字段 * refactor: context 穿透扫描生命周期，修复长驻插件阻塞和 Web Stop 无效 - RunScan 接受 context.Context，创建可取消上下文并穿透到所有策略和插件 - 长驻插件（forwardshell/socks5proxy/reverseshell）不再进入 scan WaitGroup， 通过 ctx.Done() 管理生命周期，解除 wg.Wait() 死锁 - Web Stop API 从 stopChan 改为 context.CancelFunc，取消信号真正传播到扫描链路 - ExecuteScanTasks 和 executeScanTask 支持 context 取消检查，停止分发新任务 - CLI 模式传 context.Background()，行为完全不变 * fix: 修复 Web Stop 信号等待阻塞和 SMB 响应解析越界 panic - scanner.go: 长驻插件等待信号时同时监听 ctx.Done()，Web Stop 可正常返回 - smb_protocol.go: 响应长度检查修正为 47，远端偏移量全部做边界校验 * fix: POC 扫描接入调用方 context，修复 cachedPocPath 竞争和 ProxyStats data race - webscan/web_scan.go: WebScan 接受 ctx 参数，替换 context.Background()； sync.Once 改为 sync.Mutex 保护 POC 加载，消除 cachedPocPath 并发写竞争 - webtitle.go: ctx 从 Scan 穿透到 identifyFingerprintsMulti → triggerPocScan → WebScan - webpoc.go: 传递 ctx 到 WebScan - proxy/types.go: ProxyStats 增加 sync.Mutex - proxy/manager.go: LastConnectTime/LastError/AverageConnectTime 读写加锁 * fix: 修复 ProxyStats 含 mutex 导致的 copylocks 告警 Stats() 方法改为手动构造副本，避免值拷贝复制 sync.Mutex * fix: 补全 HTTP/TLS proxy stats 加锁，修复 RPC/SMB 解析越界和 POC 加载逻辑 - httpdialer.go/tlsdialer.go: LastError/LastConnectTime/AverageConnectTime 加 mutex - findnet.go: RPC 响应结束标记位置 < 4 时跳过截断，防止负数切片 panic - ms17010.go: SMB 会话响应最小长度改为 45，sessionSetupResponse 加长度校验 - web_scan.go: POC 加载失败时不标记 pocLoaded，允许后续重试 - Eval.go: DNSLog 配置去掉 sync.Once，允许多次扫描更新配置 * fix: Web 全局状态同步、字典文件错误提示、长驻插件连接可取消 - scan.go: Web API 构建 config/state 后同步到全局实例 - config_builder.go: 用户名/密码/URL 文件读取失败时输出错误日志 - reverseshell.go: 读命令设 1s 超时，超时后检查 ctx 实现可取消 - forwardshell.go: handleClient 接受 ctx，取消时关闭连接解除阻塞 - socks5proxy.go: handleClient 接受 ctx，取消时关闭连接解除 IO 阻塞 * refactor: 引入 ScanSession，替代全局状态穿透扫描管道 (Phase 1-3) - 新增 common/session.go: ScanSession 结构体封装 Config/State/Params/Dialer - RunScan/Strategy/ExecuteScanTasks/executeScanTask 全部接收 session - Plugin 接口从 Scan(ctx, info, config, state) 改为 Scan(ctx, info, session) - 48 个插件实现统一更新签名 - Web API 构建 ScanSession 传给 RunScan - CLI 模式通过 Initialize() 创建 session * refactor: 全量替换 WrapperTcpWithTimeout 为 session.DialTCP (Phase 4) - core/port_scan.go: EnhancedPortScan/connectWithRetry/scanSinglePort 接入 session - core/service_probe.go: SmartPortInfoScanner 持有 session，重连走 session.DialTCP - core/icmp.go: CheckLive/tcpProbeAlive 接入 session - 17 个 service 插件: 内部 helper 函数全部穿透 ctx+session - 移除插件中冗余的手动 TCP 计数（DialTCP 内部已处理） - plugins/core 下已无 WrapperTcpWithTimeout/SafeTCPDial 调用残留 * refactor: 清除 core/plugins 全局状态依赖，ProgressManager 缓存引用 (Phase 5) - core/alive_scanner.go: GetFlagVars() → session.Params - core/service_scanner.go: GetFlagVars() → session.Params 和 config.Target.Ports - common/progress_manager.go: 缓存 State 和 NoColor 到字段，不再运行时读全局 - common/output_api.go: SaveResult 改用 GetGlobalConfig().Output.DisableSave - common/network.go: WrapperTcpWithTimeout 标记 Deprecated - core/ 和 plugins/ 下已无全局状态调用残留 * fix: 修复 dialer timeout 锁死、CVE 检测绕过 session 和误报问题 * fix: 修复 pocDNSLog data race，穿透 ctx 到全链路，消除残余 net.DialTimeout 绕过 * perf: CVE-2026-24061 检测改并发执行，消除硬 sleep 用 deadline 替代 * feat: 项目缓存系统，跨扫描合并资产，缓存 host:port 避免漏报 * perf: 三阶段性能优化，ICMP 并发提升+TCP 并行探测，端口扫描退避调整，服务探测超时减半 * fix: 修复凭据测试清理 goroutine 无限阻塞导致的 goroutine 泄漏 * fix: 凭据测试连续网络错误短路、resultChan 缓冲防阻塞、timer 泄漏修复 * perf: 大规模扫描网段预筛，按 /24 探活跳过空子网，B 段扫描从 2h+ 降至 2min * fix: 网段预筛从抽样改全覆盖，每台主机发 1 个探测包，消除漏报 * perf: 网段预筛增加网关启发式，.1/.254 多端口优先探测，命中即跳过逐主机兜底 * fix: MSSQL 连接加 encrypt=disable 修复无 TLS 环境扫描失败，Web API 参数校验负数 * feat: Release 增加 armv5 架构支持 * chore: bump version to 2.1.3 * fix: 锁定 golangci-lint 版本为 v2.12.1 修复 CI checksum 校验失败 * fix: golangci-lint 改用 go install 安装，绕过上游安装脚本 checksum 校验问题 * feat: -silent 模式输出 NDJSON 到 stdout，支持 AI agent 管道消费 - 新增 StdoutNDJSONWriter，silent 模式下每条扫描结果实时输出一行 JSON - LogWithProgress 层拦截人类可读日志，绕过 logger sync.Once 初始化时序问题 - 支持 fscan -h xxx -silent | jq 管道用法 * fix rdp invalid random panic (#573) * restore ms17010 legacy detection and exploit (#574) * fix ms17010 legacy packet decoding (#574) * fix csv web title output (#575) * fix web result protocol output (#577) * feat: add -ntp flag to disable TCP supplementary probe * fix: skip TCP supplementary probe in icmp mode * feat: add -debug flag with file logging to fscan_debug.log * fix: resolve golangci-lint errcheck and staticcheck warnings * fix: skip proxy deep verification for SOCKS5 connections (#579) SOCKS5 protocol validates connection reachability at protocol level, deep verification was incorrectly rejecting non-banner services like SMB(445), RPC(139) and Kerberos(88). * fix: exclude timeout from scan failure rate calculation (#578) Timeout is a normal scan result when firewalls drop packets, not a scan failure. Only resource exhaustion errors count toward failure rate. * feat: flatten NDJSON output for AI agent consumption and add SKILL.md * perf: 端口扫描自适应超时，基于 RTT 采样动态调整连接超时 * perf: 四项扫描性能优化 - SO_LINGER=0 快速释放连接，减少 TIME_WAIT 堆积 - 服务探测超时自适应，RTT 采样约束读超时上限 - 端口扫描结果流式传递，pipeline 并行端口扫描和插件执行 - ICMP 批量预构建包和地址，减少发送循环开销 * perf: 六项性能优化 - DNS 解析缓存：sync.Map 缓存避免重复系统调用 - 凭据测试 TCP 预检：不可达目标直接跳过全部凭据 - Web 探测 HTTP Client 复用：全局共享连接池 - 端口扫描 Bloom Filter 去重：替代 map 降低内存 - 进度条 atomic 累加 + 50ms 节流渲染：消除锁竞争 - 服务探针预解码：Init 时预编译，运行时零解码开销 * refactor: replace bloom filter with map for deduplication Bloom filter has false positive risk which can silently drop valid scan results. Map provides exact deduplication with negligible memory overhead at the scale of open ports (typically thousands, not millions). * fix: credential TCP precheck bypass proxy and pipeline goroutine leak - Skip TCP precheck when proxy is enabled, net.DialTimeout cannot reach targets behind SOCKS5/HTTP proxy - Drain stream channel on ctx cancellation to prevent EnhancedPortScan goroutine from blocking on a full channel * fix: stream channel 提前返回未关闭导致 goroutine 泄漏，服务探测超时下限 500ms * fix: resolve golangci-lint errcheck and staticcheck warnings --------- Co-authored-by: r00t <[email protected]>
Fscan
Comprehensive intranet scanning tool for automated vulnerability assessment.
Version: 2.1.2
Features
Scanning
- Host Discovery - ICMP/Ping alive detection, B/C segment statistics for large networks
- Port Scanning - TCP connect scan, 133 built-in ports, port groups (web/db/service/all)
- Service Detection - Smart protocol identification, 20+ service fingerprint matching
- Web Detection - Website title, CMS fingerprint, web middleware, WAF/CDN detection (40+ signatures)
Brute Force
- Password Cracking - 28 services (SSH/RDP/SMB/FTP/MySQL/MSSQL/Oracle/Redis, etc.)
- Hash Authentication - NTLM Hash support (SMB/WMI)
- SSH Key Login - Private key authentication
- Smart Dictionary - 100+ common passwords, {user} variable substitution
Vulnerability Detection
- Critical Vulns - MS17-010 (EternalBlue), SMBGhost (CVE-2020-0796)
- Unauthorized Access - Redis/MongoDB/Memcached/Elasticsearch unauthorized detection
- POC Scanning - Integrated web POC, Xray POC format support
- DNSLog - DNSLog out-of-band detection
Exploitation
- Redis Exploit - Write pubkey, crontab, webshell, master-slave RCE
- MS17-010 Exploit - ShellCode injection, add user, execute commands
- SSH Command Exec - Auto command execution after authentication
Local Modules
- Info Gathering - System info, environment variables, DC info, NIC config
- Credential Access - Memory dump (MiniDump), keylogger, registry export
- Persistence - Systemd service, Windows service, scheduled tasks, startup, LD_PRELOAD
- Reverse Shell - Forward shell, reverse shell, SOCKS5 proxy service
- AV Detection - Identify installed security software
- Trace Cleanup - Log cleaning tool
Input/Output
- Target Input - IP/CIDR/domain/URL, batch file import
- Exclusion Rules - Exclude specific hosts, ports
- Output Formats - TXT/JSON/CSV multi-format output
- Silent Mode - No banner, no progress bar, no color output
Network Control
- Proxy Support - HTTP/SOCKS5 proxy, network interface binding
- Rate Control - Rate limiting, max packet count control
- Timeout Control - Port/Web/Global timeout independent config
- Concurrency - Port scan threads, service scan threads independent config
Extensions
- Web Management UI - Visual scan task management (build with -tags web)
- Lab Environment - Built-in Docker lab for testing and learning
- Plugin Architecture - Service/Web/Local plugins separated, easy to extend
- Multi-language - Chinese/English interface (-lang zh/en)
- Performance Stats - JSON format performance report (-perf)
v2.1.0 Changelog
This update includes 262 commits: 30 new features, 120 fixes, 54 refactors, 14 performance optimizations, 20 test enhancements.
Architecture Refactoring
- Global Variable Elimination - Migrated to Config/State objects for better concurrency safety and testability
- SMB Plugin Consolidation - Merged smb/smb2/smbghost/smbinfo into unified plugin with new smb_protocol.go
- Service Probe Refactoring - Implemented Nmap-style fallback mechanism, optimized port fingerprint strategy
- Output System Refactoring - TXT real-time flush + dual-write mechanism, resolved result loss and ordering issues
- i18n Framework Upgrade - Migrated to go-i18n, full coverage of core/plugins/webscan modules
- HostInfo Refactoring - Ports field changed from string to int for type safety
- Function Complexity Optimization - clusterpoc (125→30), EnhancedPortScan (111→20)
- Code Audit - Fixed P0-P2 level issues, cleaned up deadcode
- Logging System Optimization - LogDebug call cleanup (71→18), streamlined startup log output
Performance Optimization
- Regex Precompilation - Global regex precompilation to avoid repeated compilation overhead
- Memory Optimization - Changed map[string]bool to map[string]struct{} for memory savings
- Concurrent Fingerprint Matching - Multi-goroutine parallel matching for faster identification
- Connection Reuse - SOCKS5 global dialer reuse to avoid repeated handshakes
- Sliding Window Scheduling - Adaptive thread pool + streaming iterator for port scan optimization
- CEL Cache Optimization - POC scan CEL environment caching to reduce repeated initialization
- Package-level Variable Extraction - proxyFailurePatterns/resourceExhaustedPatterns/sslSecondProbes etc.
- Capacity Pre-allocation - Simplified conversion chains, single-pass string replacement
- Concurrency Safety Optimization - Optimized lock granularity and memory allocation
New Features
- Web Management UI - Visual scan task management with responsive layout and progress display
- Multi-format POC Adapter - Support for xray and afrog format POCs
- Smart Scan Mode - Bloom filter deduplication + proxy optimization
- Enhanced Fingerprint Library - Integrated FingerprintHub (3139 fingerprints)
- Favicon Fingerprinting - Support for mmh3 and MD5 dual-format hash matching
- Universal Version Extractor - Auto-extract service version information
- Fingerprint Priority Sorting - Smart sorting of match results
- Smart Protocol Detection - Auto-detect HTTP/HTTPS protocol type
- Network Interface Binding - Support for VPN scenarios (-iface parameter)
- Exclude Hosts File - Read excluded hosts from file (-ehf parameter)
- ICMP Token Bucket Rate Limiting - Prevent router crashes from high-speed scanning
- Port Scan Retry - Automatic retry mechanism for failed scans
- RDP Real Authentication - Integrated grdp library for system fingerprinting
- SMB/FTP File Listing - Auto-list files on anonymous access
- 302 Redirect Dual Detection - Identify fingerprints from both original and redirected responses
- TXT Output URL Summary - Append web service URL list for batch testing
- gonmap Core Integration - Three improvements: probe strategy/matching engine/version parsing
- Selective Plugin Compilation - Build Tags system for independent service/local/web plugin compilation
- Default Port Expansion - Extended from 62 to 133 common ports
- Full Port Scan Support - Expanded port range limits
- HTTP Redirect Control - Configurable redirect count limit
- Performance Profiling Support - Added pprof profiling and benchmark tests
- TCP Packet Statistics - Service plugins support TCP packet send statistics
- fscan-lab Environment - Intranet penetration training platform covering all vulnerability scenarios
- Redis Exploitation Enhancement - Ported complete Redis exploitation (write pubkey/crontab/webshell/master-slave RCE)
- rsync Plugin Refactoring - Restructured authentication logic using go-rsync library
Bug Fixes (120 items, key fixes listed)
- RDP Null Pointer Panic - Fixed certificate parsing crash (#551)
- Batch Scan Missing Results - Fixed large-scale scan omissions (#304)
- JSON Output Format - Fixed output format errors (#446)
- Redis Weak Password Detection - Fixed detection omissions (#447)
- Real-time Result Saving - Fixed scan results not saved timely (#469)
- Nmap Parse Overflow - Fixed octal escape parsing bug (#478)
- Fingerprint Race Condition - Fixed webtitle/webpoc race issues (#474)
- MySQL Connection Validation - Changed to information_schema for validation
- Proxy Port Misjudgment - Fixed port status judgment in proxy mode
- Context Timeout - Fixed 22 plugin timeout unresponsive issues
- ICMP Race Condition - Fixed concurrent scan race issues
- IPv6 Address Format - Fixed 4 address formatting issues
- POC High Concurrency Hang - Fixed Context propagation issues
- Ctrl+C Result Loss - Added signal handling for proper result saving
- SOCKS5 Echo Issue - Added proxy connection validation
- Service Probe Leak - Fixed connection not properly closed
- webtitle Response Discard - Fixed partial response data being discarded causing identification failure
- TXT Vulnerability Info Missing - Fixed output missing vulnerability details
- JSON Fingerprint Missing - Unified SERVICE result Target format
- Scan Duration Display - Fixed completion time showing as 0
- False Vulnerability Records - Refactored TXT output system to eliminate false positives
- Redis Cross-platform Path - Fixed exploitation path and timeout issues
- Windows Compilation Warnings - Fixed fscan-lite platform compatibility
- Go 1.20 Compatibility - Downgraded dependencies for compatibility
Test Enhancements (20 items)
- Unit Tests - Core module coverage at 74-100%
- Concurrency Safety Tests - Dedicated tests for State object and fingerprint matching engine
- Integration Tests - Web scan/port scan/service probe/SSH auth/ICMP probe
- CLI Parameter Tests - Command-line argument parsing verification
- Performance Benchmarks - AdaptivePool and service probe strategy benchmarks
- ResultBuffer Tests - Deduplication and completeness scoring verification
Engineering Improvements
- CI Pipeline Optimization - Upgraded to golangci-lint v2, simplified build steps
- Issue Automation - GitHub Issue template optimization, Project automation workflow
- Full Lint Fixes - revive/errcheck/shadow/staticcheck/gosimple all passing
- README Rewrite - Comprehensive Chinese and English documentation update
- Code Format Unification - gofmt/goimports standardization
Quick Start
# Scan C-class network
./fscan -h 192.168.1.1/24
# Specify ports
./fscan -h 192.168.1.1 -p 22,80,443,3389
# Alive detection only
./fscan -h 192.168.1.1/24 -ao
# Disable brute force
./fscan -h 192.168.1.1/24 -nobr
# Web scanning
./fscan -u http://192.168.1.1
# Local plugin
./fscan -local systeminfo
# Hash authentication
./fscan -h 192.168.1.1 -m smb2 -user admin -hash xxxxx
# Redis write pubkey
./fscan -h 192.168.1.1 -m redis -rf id_rsa.pub
Build
# Standard build
go build -ldflags="-s -w" -trimpath -o fscan main.go
# With Web UI
go build -tags web -ldflags="-s -w" -trimpath -o fscan main.go
Install
# Arch Linux
yay -S fscan-git
Screenshots
fscan.exe -h 192.168.x.x
fscan.exe -h 192.168.x.x -rf id_rsa.pub (Redis write pubkey)
fscan.exe -h 192.168.x.x -m ssh -user root -pwd password
fscan.exe -h 192.168.x.x -p80 -proxy http://127.0.0.1:8080
fscan.exe -h 192.168.x.x -p 139 -m netbios
fscan.exe -h 192.0.0.0/8 -m icmp
Roadmap
Release Schedule
- Release Cycle - Monthly release
- First 2 Weeks - New features and enhancements
- Last 2 Weeks - Bug fixes and code integration
- PRs Welcome - Contributions are appreciated!
Plugin Ecosystem
- Continuously expand service plugin coverage
- Develop more vulnerability detection and exploitation capabilities for each service plugin
- Maintain backward compatibility of plugin APIs to ensure legacy POCs remain functional
Fscan-lite
- Lightweight version rewritten in C
- Smaller binary size, fewer dependencies
- Support for embedded/restricted environments
- Directory: fscan-lite
Fscan-lab
- Intranet penetration testing lab environment
- Covers all vulnerability scenarios supported by fscan
- Development testing and feature verification platform
- Learning and practice environment for beginners
- Directory: fscan-lab
Disclaimer
This tool is intended for legally authorized enterprise security testing only. Obtain proper authorization, comply with local laws, do not scan unauthorized targets. The author assumes no liability for any illegal use.
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fscan is a member of 404Team StarLink 2.0.
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