scapy学习笔记(3)
转自:@小五义:http://www.cnblogs/xiaowuyi
在安装完scapy(前两篇笔记有介绍)后,linux环境下,执行sudo scapy运行scapy。
一、简单的发送包
1、send()在第三层发送数据包,但没有接收功能。如:
>>> send(IP(dst="www.baidu.com",ttl=1)/ICMP())
.
Sent 1 packets.
这里相当于ping了下百度,ttl=1
2、sendp(),在第二层发送数据包,同样没有接收功能。如:

>>> sendp(Ether()/IP(dst="www.baidu.com",ttl=1)/ICMP())
WARNING: Mac address to reach destination not found. Using broadcast.
.
Sent 1 packets.
>>> sendp(Ether()/IP(dst="127.0.0.1",ttl=1)/ICMP())
.
Sent 1 packets.

3、sr(),在第三层发送数据包,有接收功能。如:

>>> p=sr(IP(dst="www.baidu.com",ttl=1)/ICMP())
Begin emission:
..Finished to send 1 packets.
.*
Received 4 packets, got 1 answers, remaining 0 packets
>>> p
(<Results: TCP:0 UDP:0 ICMP:1 Other:0>, <Unanswered: TCP:0 UDP:0 ICMP:0 Other:0>)
>>> p[0]
<Results: TCP:0 UDP:0 ICMP:1 Other:0>
>>> p[0].show()
0000 IP / ICMP 27.214.222.160 > 61.135.169.105 echo-request 0 ==> IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror

再比如,连续发送ttl=1,2,3,4四个包的情况

>>> p=sr(IP(dst="www.baidu.com",ttl=(1,4))/ICMP())
Begin emission:
Finished to send 4 packets.
.*.*.*.*
Received 8 packets, got 4 answers, remaining 0 packets
>>> p
(<Results: TCP:0 UDP:0 ICMP:4 Other:0>, <Unanswered: TCP:0 UDP:0 ICMP:0 Other:0>)
>>> p[0].show()
0000 IP / ICMP 27.214.222.160 > 61.135.169.125 echo-request 0 ==> IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
0001 IP / ICMP 27.214.222.160 > 61.135.169.125 echo-request 0 ==> IP / ICMP 222.132.4.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
0002 IP / ICMP 27.214.222.160 > 61.135.169.125 echo-request 0 ==> IP / ICMP 119.190.5.126 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
0003 IP / ICMP 27.214.222.160 > 61.135.169.125 echo-request 0 ==> IP / ICMP 112.253.4.197 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
>>>

4、sr1(),在第三层发送数据包,有接收功能,但只接收第一个包。以上面的发送四个包为例:

>>> q=sr1(IP(dst="www.baidu.com",ttl=(1,4))/ICMP())
Begin emission:
Finished to send 4 packets.
.*.*.*.*
Received 8 packets, got 4 answers, remaining 0 packets
>>> q
<IP version=4L ihl=5L tos=0xc0 len=56 id=4773 flags= frag=0L ttl=255 proto=icmp chksum=0xb611 src=27.214.220.1 dst=27.214.222.160 options=[] |<ICMP type=time-exceeded code=ttl-zero-during-transit chksum=0xf4ff unused=0 |<IPerror version=4L ihl=5L tos=0x0 len=28 id=1 flags= frag=0L ttl=1 proto=icmp chksum=0xd879 src=27.214.222.160 dst=61.135.169.105 options=[] |<ICMPerror type=echo-request code=0 chksum=0xf7ff id=0x0 seq=0x0 |>>>>
>>> q.show()
###[ IP ]###
version= 4L
ihl= 5L
tos= 0xc0
len= 56
id= 4773
flags=
frag= 0L
ttl= 255
proto= icmp
chksum= 0xb611
src= 27.214.220.1
dst= 27.214.222.160
\options\
###[ ICMP ]###
type= time-exceeded
code= ttl-zero-during-transit
chksum= 0xf4ff
unused= 0
###[ IP in ICMP ]###
version= 4L
ihl= 5L
tos= 0x0
len= 28
id= 1
flags=
frag= 0L
ttl= 1
proto= icmp
chksum= 0xd879
src= 27.214.222.160
dst= 61.135.169.105
\options\
###[ ICMP in ICMP ]###
type= echo-request
code= 0
chksum= 0xf7ff
id= 0x0
seq= 0x0

5、srloop(),在第三层工作,如下:

>>> p=srloop(IP(dst="www.baidu.com",ttl=1)/ICMP())
RECV 1: IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
RECV 1: IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
RECV 1: IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
RECV 1: IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
RECV 1: IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
^C
Sent 5 packets, received 5 packets. 100.0% hits.
>>> p=srloop(IP(dst="www.baidu.com",ttl=1)/ICMP(),inter=3,count=2)
RECV 1: IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror
RECV 1: IP / ICMP 27.214.220.1 > 27.214.222.160 time-exceeded ttl-zero-during-transit / IPerror / ICMPerror Sent 2 packets, received 2 packets. 100.0% hits.

这里第一条语句在执行时,将会不停的ping百度,第二条执行时每隔3秒ping一次,一共执行两次。inter表示间隔,count记录次数。
6、srp()、srp1()、srploop()与上面3、4、5相同,只是工作在第二层。
二、SYN扫描
SYN扫描:也叫“半开式扫描”(half-open scanning),因为它没有完成一个完整的TCP连接。这种方法向目标端口发送一个SYN分组(packet),如果目标端口返回SYN/ACK,那么可以肯定该端口处于检听状态;否则,返回的是RST/ACK。

>>> sr1(IP(dst="61.135.169.105")/TCP(dport=80,flags="S"))
Begin emission:
Finished to send 1 packets.
.*
Received 2 packets, got 1 answers, remaining 0 packets
<IP version=4L ihl=5L tos=0x0 len=40 id=1 flags= frag=0L ttl=56 proto=tcp chksum=0xa168 src=61.135.169.105 dst=27.214.222.160 options=[] |<TCP sport=http dport=ftp_data seq=3516051844L ack=1 dataofs=5L reserved=0L flags=SA window=8192 chksum=0x2aef urgptr=0 |>> >>> sr1(IP(dst="61.135.169.105")/TCP(dport=81,flags="S"))
Begin emission:
Finished to send 1 packets.
.*
Received 2 packets, got 1 answers, remaining 0 packets
<IP version=4L ihl=5L tos=0x0 len=56 id=31986 flags= frag=0L ttl=249 proto=icmp chksum=0xd677 src=123.125.248.102 dst=27.214.222.160 options=[] |<ICMP type=dest-unreach code=communication-prohibited chksum=0xfc8d unused=0 |<IPerror version=4L ihl=5L tos=0x0 len=40 id=1 flags= frag=0L ttl=56 proto=tcp chksum=0xa168 src=27.214.222.160 dst=61.135.169.105 options=[] |<TCPerror sport=ftp_data dport=81 seq=0 |>>>>

从结果看,当扫描百度(61.135.169.105)的80端口时,返回的包中ACK=1或者flags=SA,说明该端口处于监听状态,当扫描81端口时,无ACK=1,或者flags=,说明其未处于监听状态。
如果要扫描多个端口,可以使用以下语句,如扫描百度的80-83端口:
>>>sr(IP(dst="www.baidu.com")/TCP(dport=(80,83),flags="S"))
如要扫描21,80,3389等端口:
>>>sr(IP(dst="www.baidu.com")/TCP(dport=[21,80,3389],flags="S"))
简单要显示结果:

>>>ans,unans=_
>>>ans.summary(lambda(s,r):r.sprintf("%TCP.sport% \t %TCP.flags%"))
http SA
81 RA
82 RA
83 RA

这里我在扫描80-83时,总是在不停的扫,用ctrl+C停止后,只能得到两个结果,目前没搞明白是什么原因。如下:

>>> sr(IP(dst="www.baidu.com",ttl=56)/TCP(dport=(80,83),flags="S"))
Begin emission:
Finished to send 4 packets.
.*.*.................................................................................
^C
Received 85 packets, got 2 answers, remaining 2 packets
(<Results: TCP:1 UDP:0 ICMP:1 Other:0>, <Unanswered: TCP:2 UDP:0 ICMP:0 Other:0>)
>>> ans,unans=_
>>> ans.summary()
IP / TCP 27.214.134.124:ftp_data > 61.135.169.105:http S ==> IP / TCP 61.135.169.105:http > 27.214.134.124:ftp_data SA
IP / TCP 27.214.134.124:ftp_data > 61.135.169.105:82 S ==> IP / ICMP 123.125.248.42 > 27.214.134.124 dest-unreach communication-prohibited / IPerror / TCPerror
>>> ans.summary(lambda(s,r):r.sprintf("%TCP.sport% \t %TCP.flags%"))
http SA
?? ??

三、TCP traceroute
traceroute:用来追踪出发点到目的地所经过的路径,通过Traceroute我们可以知道信息从你的计算机到互联网另一端的主机是走的什么路径。当然每次数据包由某一同样的出发点(source)到达某一同样的目的地(destination)走的路径可能会不一样,但基本上来说大部分时候所走的路由是相同的。

>>> ans,unans=sr(IP(dst="www.baidu.com",ttl=(4,25),id=RandShort())/TCP(flags=0x2))
Begin emission:
...*.*.*.*.*.*.*.*.*.*.*Finished to send 22 packets.
.*.*.*.*.*.*.*.*.*.*....^C
Received 48 packets, got 21 answers, remaining 1 packets
>>> for snd,rcv in ans:
... print snd.ttl,rcv.src,isinstance(rcv.payload,TCP)
...
4 112.253.4.177 False
5 219.158.98.221 False
6 124.65.194.22 False
7 124.65.58.182 False
8 123.125.248.42 False
9 61.135.169.105 True
10 61.135.169.105 True
11 61.135.169.105 True
12 61.135.169.105 True
13 61.135.169.105 True
14 61.135.169.105 True
15 61.135.169.105 True
16 61.135.169.105 True
17 61.135.169.105 True
18 61.135.169.105 True
19 61.135.169.105 True
20 61.135.169.105 True
21 61.135.169.105 True
22 61.135.169.105 True
23 61.135.169.105 True
24 61.135.169.105 True

scapy学习笔记(3)的更多相关文章
- scapy学习笔记(3)发送包,SYN及TCP traceroute 扫描
转载请注明:@小五义:http://www.cnblogs/xiaowuyi 在安装完scapy(前两篇笔记有介绍)后,linux环境下,执行sudo scapy运行scapy. 一.简单的发送包 1 ...
- scapy学习笔记(5)
1.ACK Scan >>>ans,unans=sr(IP(dst=,],flags="A") 扫描后,若要找出未过虑的端口: for s,r in ans: i ...
- scapy学习笔记(2)--包及包的定义
转载请注明:@小五义:http://www.cnblogs/xiaowuyi 一.包 包(Packet)是TCP/IP协议通信传输中的数据单位,一般也称“数据包”.其主要由“目的IP地址”.“源IP地 ...
- scapy学习笔记(1)
转载请注明:小五义 http://www.cnblogs.com/xiaowuyi scapy是python写的一个功能强大的交互式数据包处理程序,可用来发送.嗅探.解析和伪造网络数据包,常常被用到网 ...
- scapy学习笔记(2)
一.包 包(Packet)是TCP/IP协议通信传输中的数据单位,一般也称“数据包”.其主要由“目的IP地址”.“源IP地址”.“净载数据”等部分构成,包括包头和包体,包头是固定长度,包体的长度不定, ...
- scapy学习笔记
1.ACK Scan >>>ans,unans=sr(IP(dst="www.baidu.com")/TCP(dport=[80,666],flags=" ...
- scapy学习笔记(4)简单的sniffing 嗅探
转载请注明:@小五义:http://www.cnblogs/xiaowuyi 利用sniff命令进行简单的嗅探,可以抓到一些简单的包.当不指定接口时,将对每一个接口进行嗅探,当指定接口时,仅对该接口进 ...
- js学习笔记:webpack基础入门(一)
之前听说过webpack,今天想正式的接触一下,先跟着webpack的官方用户指南走: 在这里有: 如何安装webpack 如何使用webpack 如何使用loader 如何使用webpack的开发者 ...
- PHP-自定义模板-学习笔记
1. 开始 这几天,看了李炎恢老师的<PHP第二季度视频>中的“章节7:创建TPL自定义模板”,做一个学习笔记,通过绘制架构图.UML类图和思维导图,来对加深理解. 2. 整体架构图 ...
随机推荐
- Android开发:《Gradle Recipes for Android》阅读笔记1.7——仓库配置
repositories块告诉gradle哪里去寻找依赖,默认的android studio使用jcenter或者mavenCentral.jcenter仓库位于https://jcenter.bin ...
- jmeter 响应数据更换显示类型(json、html、text)
.默认情况下是Text格式 2.修改为json格式显示
- CodeIgniter框架——源码分析之Config.php
CI框架的配置信息被存储在$config数组中,我们可以添加自己的配置信息或配置文件到$config中: $this->config->load('filename'); //加载配置文件 ...
- CentOS7上elasticsearch5.0启动失败
CentOS7上elasticsearch5.0启动失败 刚一启动完直接就退出了 $ ./elasticsearch ... ERROR: bootstrap checks failed max fi ...
- 【转】C#操作word定位光标
十一.上下左右移动光标位 private void moveLeft() { object moveUnit = Microsoft.Office.Interop.Word.WdUnits.wdWor ...
- Sql注入基础一
凡是带入数据库查询的都有可能是注入. 整个数据包 Sql注入原理? 网站数据传输中,接受变量传递的值未进行过滤,导致直接带入数据库查询执行的操作问题. Sql注入对于渗透的作用? 获取数据(网 ...
- coursera 《现代操作系统》 -- 第四周 处理器调度
优先级反转 这往往出现在一个高优先级任务等待访问一个被低优先级任务正在使用的临界资源,从而阻塞了高优先级任务:同时,该低优先级任务被一个次高优先级的任务所抢先,从而无法及时地释放该临界资源.这种情况下 ...
- 客户端-服务器通信安全 sign key
API接口签名校验,如何安全保存appsecret? - 知乎 https://www.zhihu.com/question/40855191 要保证一般的客户端-服务器通信安全,可以使用3个密钥. ...
- stochastic matrix
w Stochastic matrix - Wikipedia https://en.wikipedia.org/wiki/Stochastic_matrix Suppose you have a ...
- PHP-Heredoc用法:<<<EOFEOF;
Heredoc,用来输出大段的HTML和JavaScript <<<EOF后面不能有空格. EOF;末尾的结束符必须靠边,并且前面不能有空格和缩进符. 例如: $mazey=< ...