From 3529efcb249f7e211ef33238023382c1cb2c133f Mon Sep 17 00:00:00 2001 From: ZacharyZcR <2903735704@qq.com> Date: Mon, 23 Dec 2024 02:59:51 +0800 Subject: [PATCH] =?UTF-8?q?feat:=20=E5=A2=9E=E5=8A=A0SNMP=E6=89=AB?= =?UTF-8?q?=E6=8F=8F=20=E5=A2=9E=E5=8A=A0UDP=E7=AB=AF=E5=8F=A3=E6=89=AB?= =?UTF-8?q?=E6=8F=8F?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Common/Config.go | 1 + Common/Flag.go | 1 + Common/ParseScanMode.go | 4 +- Common/Ports.go | 4 +- Core/PortScan.go | 56 +++++++++++++++++++++++-- Core/Registry.go | 6 +++ Plugins/SNMP.go | 90 +++++++++++++++++++++++++++++++++++++++++ go.mod | 1 + go.sum | 2 + 9 files changed, 158 insertions(+), 7 deletions(-) create mode 100644 Plugins/SNMP.go diff --git a/Common/Config.go b/Common/Config.go index 2e92125..d23f336 100644 --- a/Common/Config.go +++ b/Common/Config.go @@ -51,6 +51,7 @@ var ( ScanMode string // 原Scantype ThreadNum int // 原Threads UseSynScan bool + UseUdpScan bool Timeout int64 = 3 LiveTop int DisablePing bool // 原NoPing diff --git a/Common/Flag.go b/Common/Flag.go index 0d97421..6121125 100644 --- a/Common/Flag.go +++ b/Common/Flag.go @@ -72,6 +72,7 @@ func Flag(Info *HostInfo) { " 漏洞类: ms17010, smbghost, smb2\n"+ " 其他: findnet, wmiexec, localinfo") flag.BoolVar(&UseSynScan, "sS", false, "使用SYN扫描替代TCP全连接扫描(需要root/管理员权限)") + flag.BoolVar(&UseUdpScan, "sU", false, "使用UDP扫描(部分端口自动使用UDP协议)") flag.IntVar(&ThreadNum, "t", 600, "设置扫描线程数") flag.Int64Var(&Timeout, "time", 3, "设置连接超时时间(单位:秒)") flag.IntVar(&LiveTop, "top", 10, "仅显示指定数量的存活主机") diff --git a/Common/ParseScanMode.go b/Common/ParseScanMode.go index bc0301a..d22add6 100644 --- a/Common/ParseScanMode.go +++ b/Common/ParseScanMode.go @@ -21,7 +21,7 @@ var pluginGroups = map[string][]string{ "web", "fcgi", // web类 "mysql", "mssql", "redis", "mongodb", "postgres", // 数据库类 "oracle", "memcached", "elasticsearch", "rabbitmq", "kafka", "activemq", // 数据库类 - "ftp", "ssh", "telnet", "smb", "rdp", "vnc", "netbios", "ldap", "smtp", "imap", "pop3", // 服务类 + "ftp", "ssh", "telnet", "smb", "rdp", "vnc", "netbios", "ldap", "smtp", "imap", "pop3", "snmp", // 服务类 "ms17010", "smbghost", "smb2", // 漏洞类 "findnet", // 其他 }, @@ -36,7 +36,7 @@ var pluginGroups = map[string][]string{ "web", "fcgi", }, ModeService: { - "ftp", "ssh", "telnet", "smb", "rdp", "vnc", "netbios", "ldap", "smtp", "imap", "pop3", + "ftp", "ssh", "telnet", "smb", "rdp", "vnc", "netbios", "ldap", "smtp", "imap", "pop3", "snmp", }, ModeVul: { "ms17010", "smbghost", "smb2", diff --git a/Common/Ports.go b/Common/Ports.go index 872a462..648e932 100644 --- a/Common/Ports.go +++ b/Common/Ports.go @@ -5,11 +5,11 @@ import ( "strings" ) -var ServicePorts = "21,22,23,25,110,135,139,143,389,445,465,587,636,993,995,1433,1521,2222,3306,3389,5432,5672,5671,6379,8161,9000,9092,9093,9200,11211,15672,15671,27017,61616,61613" +var ServicePorts = "21,22,23,25,110,135,139,143,161,162,389,445,465,587,636,993,995,1433,1521,2222,3306,3389,5432,5672,5671,6379,8161,9000,9092,9093,9200,11211,15672,15671,27017,61616,61613" var DbPorts = "1433,1521,3306,5432,5672,6379,9093,9200,11211,27017,61616" var WebPorts = "80,81,82,83,84,85,86,87,88,89,90,91,92,98,99,443,800,801,808,880,888,889,1000,1010,1080,1081,1082,1099,1118,1888,2008,2020,2100,2375,2379,3000,3008,3128,3505,5555,6080,6648,6868,7000,7001,7002,7003,7004,7005,7007,7008,7070,7071,7074,7078,7080,7088,7200,7680,7687,7688,7777,7890,8000,8001,8002,8003,8004,8006,8008,8009,8010,8011,8012,8016,8018,8020,8028,8030,8038,8042,8044,8046,8048,8053,8060,8069,8070,8080,8081,8082,8083,8084,8085,8086,8087,8088,8089,8090,8091,8092,8093,8094,8095,8096,8097,8098,8099,8100,8101,8108,8118,8161,8172,8180,8181,8200,8222,8244,8258,8280,8288,8300,8360,8443,8448,8484,8800,8834,8838,8848,8858,8868,8879,8880,8881,8888,8899,8983,8989,9000,9001,9002,9008,9010,9043,9060,9080,9081,9082,9083,9084,9085,9086,9087,9088,9089,9090,9091,9092,9093,9094,9095,9096,9097,9098,9099,9100,9200,9443,9448,9800,9981,9986,9988,9998,9999,10000,10001,10002,10004,10008,10010,10250,12018,12443,14000,15672,15671,16080,18000,18001,18002,18004,18008,18080,18082,18088,18090,18098,19001,20000,20720,21000,21501,21502,28018,20880" var AllPorts = "1-65535" -var MainPorts = "21,22,23,80,81,110,135,143,139,389,443,445,993,995,1433,1521,3306,5432,5672,6379,7001,8000,8080,8089,9000,9200,9092,11211,15672,27017,61616" +var MainPorts = "21,22,23,80,81,110,135,139,143,161,389,443,445,993,995,1433,1521,3306,5432,5672,6379,7001,8000,8080,8089,9000,9200,9092,11211,15672,27017,61616" func ParsePortsFromString(portsStr string) []int { var ports []int diff --git a/Core/PortScan.go b/Core/PortScan.go index eb5a2ae..6c47933 100644 --- a/Core/PortScan.go +++ b/Core/PortScan.go @@ -84,14 +84,19 @@ func PortScan(hostslist []string, ports string, timeout int64) []string { } func PortConnect(addr Addr, respondingHosts chan<- string, timeout int64, wg *sync.WaitGroup) { - defer wg.Done() // 保留 defer wg.Done() + defer wg.Done() var isOpen bool var err error - if Common.UseSynScan { + if Common.UseUdpScan { + // UDP扫描 + isOpen, err = UDPScan(addr.ip, addr.port, timeout) + } else if Common.UseSynScan { + // SYN扫描 isOpen, err = SynScan(addr.ip, addr.port, timeout) } else { + // 标准TCP扫描 conn, err := Common.WrapperTcpWithTimeout("tcp4", fmt.Sprintf("%s:%v", addr.ip, addr.port), time.Duration(timeout)*time.Second) @@ -107,7 +112,11 @@ func PortConnect(addr Addr, respondingHosts chan<- string, timeout int64, wg *sy // 记录开放端口 address := fmt.Sprintf("%s:%d", addr.ip, addr.port) - result := fmt.Sprintf("[+] 端口开放 %s", address) + protocol := "TCP" + if Common.UseUdpScan { + protocol = "UDP" + } + result := fmt.Sprintf("[+] %s端口开放 %s", protocol, address) Common.LogSuccess(result) respondingHosts <- address @@ -306,6 +315,47 @@ func calculateTCPChecksum(tcpHeader []byte, srcIP, dstIP net.IP) uint16 { return ^uint16(sum) } +func UDPScan(ip string, port int, timeout int64) (bool, error) { + // 创建UDP套接字 + sendConn, err := net.ListenPacket("udp4", "0.0.0.0:0") + if err != nil { + return false, fmt.Errorf("创建UDP套接字失败: %v", err) + } + defer sendConn.Close() + + // 设置目标地址 + dstAddr := &net.UDPAddr{ + IP: net.ParseIP(ip), + Port: port, + } + + // 发送空包 + _, err = sendConn.WriteTo([]byte{0x00}, dstAddr) + if err != nil { + return false, fmt.Errorf("发送UDP包失败: %v", err) + } + + // 设置读取超时 + sendConn.SetReadDeadline(time.Now().Add(time.Duration(timeout) * time.Second)) + + // 尝试读取响应 + buffer := make([]byte, 65507) // UDP最大包大小 + n, _, err := sendConn.ReadFrom(buffer) + + // 如果收到ICMP不可达，说明端口关闭 + if err != nil { + if netErr, ok := err.(net.Error); ok && netErr.Timeout() { + // 超时可能意味着端口开放但没有响应 + return true, nil + } + // 其他错误说明端口可能关闭 + return false, nil + } + + // 收到响应说明端口开放 + return n > 0, nil +} + // 获取系统对应的接口名 func getInterfaceName() string { switch runtime.GOOS { diff --git a/Core/Registry.go b/Core/Registry.go index 4e30cb2..eaadf7d 100644 --- a/Core/Registry.go +++ b/Core/Registry.go @@ -109,6 +109,12 @@ func init() { ScanFunc: Plugins.POP3Scan, }) + Common.RegisterPlugin("snmp", Common.ScanPlugin{ + Name: "SNMP", + Ports: []int{161, 162}, // SNMP默认端口 + ScanFunc: Plugins.SNMPScan, + }) + Common.RegisterPlugin("rdp", Common.ScanPlugin{ Name: "RDP", Ports: []int{3389}, diff --git a/Plugins/SNMP.go b/Plugins/SNMP.go new file mode 100644 index 0000000..6e067c3 --- /dev/null +++ b/Plugins/SNMP.go @@ -0,0 +1,90 @@ +package Plugins + +import ( + "fmt" + "github.com/gosnmp/gosnmp" + "github.com/shadow1ng/fscan/Common" + "strconv" + "strings" + "time" +) + +// SNMPScan 执行SNMP服务扫描 +// SNMPScan 执行SNMP服务扫描 +func SNMPScan(info *Common.HostInfo) (tmperr error) { + if Common.DisableBrute { + return + } + + starttime := time.Now().Unix() + portNum, _ := strconv.Atoi(info.Ports) // 添加端口转换 + + // 首先尝试默认community strings + defaultCommunities := []string{"public", "private", "cisco", "community"} + + for _, community := range defaultCommunities { + flag, err := SNMPConnect(info, community, portNum) // 传入转换后的端口 + if flag && err == nil { + return err + } + + if Common.CheckErrs(err) { + return err + } + + errlog := fmt.Sprintf("[-] SNMP服务 %v:%v 尝试失败 community: %v 错误: %v", + info.Host, info.Ports, community, err) + Common.LogError(errlog) + tmperr = err + + // 修正超时计算 + timeout := time.Duration(Common.Timeout) * time.Second + if time.Now().Unix()-starttime > int64(timeout.Seconds())*int64(len(defaultCommunities)) { + return err + } + } + + return tmperr +} + +// SNMPConnect 尝试SNMP连接 +func SNMPConnect(info *Common.HostInfo, community string, portNum int) (bool, error) { + host := info.Host + timeout := time.Duration(Common.Timeout) * time.Second + + snmp := &gosnmp.GoSNMP{ + Target: host, + Port: uint16(portNum), + Community: community, + Version: gosnmp.Version2c, + Timeout: timeout, + Retries: 1, + } + + err := snmp.Connect() + if err != nil { + return false, err + } + defer snmp.Conn.Close() + + oids := []string{"1.3.6.1.2.1.1.1.0"} + result, err := snmp.Get(oids) + if err != nil { + return false, err + } + + if len(result.Variables) > 0 { + success := fmt.Sprintf("[+] SNMP服务 %v:%v community: %v", + host, portNum, community) // 使用portNum替换port + + if result.Variables[0].Type != gosnmp.NoSuchObject { + sysDesc := strings.TrimSpace(string(result.Variables[0].Value.([]byte))) + success += fmt.Sprintf(" System: %v", sysDesc) + } + + Common.LogSuccess(success) + return true, nil + } + + return false, fmt.Errorf("认证失败") +} diff --git a/go.mod b/go.mod index 75900b6..9d9f1bd 100644 --- a/go.mod +++ b/go.mod @@ -46,6 +46,7 @@ require ( github.com/golang-sql/sqlexp v0.1.0 // indirect github.com/golang/snappy v0.0.4 // indirect github.com/google/uuid v1.6.0 // indirect + github.com/gosnmp/gosnmp v1.38.0 // indirect github.com/hashicorp/errwrap v1.0.0 // indirect github.com/hashicorp/go-multierror v1.1.1 // indirect github.com/hashicorp/go-uuid v1.0.3 // indirect diff --git a/go.sum b/go.sum index abde22f..d96c250 100644 --- a/go.sum +++ b/go.sum @@ -129,6 +129,8 @@ github.com/gopherjs/gopherjs v0.0.0-20210621113107-84c6004145de/go.mod h1:MtKwTf github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4= github.com/gorilla/sessions v1.2.1/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM= github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE= +github.com/gosnmp/gosnmp v1.38.0 h1:I5ZOMR8kb0DXAFg/88ACurnuwGwYkXWq3eLpJPHMEYc= +github.com/gosnmp/gosnmp v1.38.0/go.mod h1:FE+PEZvKrFz9afP9ii1W3cprXuVZ17ypCcyyfYuu5LY= github.com/goxjs/gl v0.0.0-20210104184919-e3fafc6f8f2a/go.mod h1:dy/f2gjY09hwVfIyATps4G2ai7/hLwLkc5TrPqONuXY= github.com/goxjs/glfw v0.0.0-20191126052801-d2efb5f20838/go.mod h1:oS8P8gVOT4ywTcjV6wZlOU4GuVFQ8F5328KY3MJ79CY= github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=