Android中使用Tcpdump抓取网络数据包

Android中使用Tcpdump抓取网络数据包

博客分类：
Android 

工具：

tcpdump 抓取网络数据包，下载地址  http://www.strazzere.com/android/tcpdump

              源码和文档 http://www.tcpdump.org/

wireshark 无须多说了，PC上大名鼎鼎的网络数据抓取分析工具，这里主要是用来打开和分析tcpdump抓取的网路数据包。

 

使用：

1.下载tcpdump到电脑上

Java代码

 




adb root     
adb remount     
adb push tcpdump /system/bin/tcpdump     
adb shell chmod 6755  /system/bin/tcpdump   

adb root
adb remount
adb push tcpdump /system/bin/tcpdump
adb shell chmod 6755  /system/bin/tcpdump

 

2. 运行tcpdump，这个需要root权限，不过上面的命令已经获取root了

Java代码

 




adb shell tcpdump -i any -p -s 0 -w /sdcard/capture.pcap     
# "-i any": listen on any network interface     
# "-p": disable promiscuous mode (doesn't work anyway)     
# "-s 0": capture the entire packet     
# "-w": write packets to a file (rather than printing to stdout)     
     
   ... do whatever you want to capture, then ^C to stop it ...     
     
adb pull /sdcard/capture.pcap .     
sudo apt-get install wireshark  # or ethereal, if you're still on dapper     
wireshark capture.pcap          # or ethereal     
     
   ... look at your packets and be wise ...    

adb shell tcpdump -i any -p -s 0 -w /sdcard/capture.pcap
# "-i any": listen on any network interface
# "-p": disable promiscuous mode (doesn't work anyway)
# "-s 0": capture the entire packet
# "-w": write packets to a file (rather than printing to stdout)

... do whatever you want to capture, then ^C to stop it ...

adb pull /sdcard/capture.pcap .
sudo apt-get install wireshark  # or ethereal, if you're still on dapper
wireshark capture.pcap          # or ethereal

... look at your packets and be wise ...

 You can run tcpdump in the background from an interactive shell or from Terminal. By default, tcpdump captures all traffic without filtering. If you prefer, add an expression like port 80 to the tcpdump command
line. 

Real time packet monitoring

Execute the following if you would like to watch packets go by rather than capturing them to a file (-n skips DNS lookups. -s 0 captures the entire packet rather than just the header): 

adb shell tcpdump -n -s 0  

Typical tcpdump options apply. For example, if you want to see HTTP traffic: 

adb shell tcpdump -X -n -s 0 port 80  

怎么使用wireshark进行分析就不再赘述了。
 
 

Android通过tcpdump抓包

1. 手机要有root权限

2. 下载tcpdump   http://www.strazzere.com/android/tcpdump
3. adb push c:\wherever_you_put\tcpdump /data/local/tcpdump

4. adb shell chmod 6755 /data/local/tcpdump

5, adb shell,   su获得root权限

6， cd /data/local

7， ./tcpdump -i any -p -s 0 -w /sdcard/capture.pcap

命令参数：

        # "-i any": listen on any network interface

　　# "-p": disable promiscuous mode (doesn't work anyway)

　　# "-s 0": capture the entire packet

　　# "-w": write packets to a file (rather than printing to stdout)

　　... do whatever you want to capture, then ^C to stop it ...

8,  adb pull /sdcard/capture.pcap d:/

9,  在电脑上用wireshark打开capture.pcap即可分析log
 

Execute the following if you would like to watch packets go by rather than capturing them to a file (-n skips DNS lookups.
-s 0 captures the entire packet rather than just the header):  

 

adb shell tcpdump -n -s 0   

 

Typical tcpdump options apply. For example, if you want to see HTTP traffic:  

只监听http  
adb shell tcpdump -X -n -s 0 port 80

 

根据以上的信息，写一个bat去执行（tcpdump文件必须在当前目录里）。

 

开始tcpdump 

adb push tcpdump /data/local/tcpdump
adb shell chmod 6755 /data/local/tcpdump
adb shell rm -r /sdcard/capture.pcap
adb shell  /data/local/tcpdump -i any -p -s 0 -w /sdcard/capture.pcap
pause

下载tcpdump文件到电脑 

 adb pull /sdcard/capture.pcap capture.pcap 

 

 问题：有些机器root后通过adb shell 后，默认不是root用户，需要输入 su才能切换到root，这样在执行批处理会有问题，解决方法如下

adb shell "su -c 'sleep 1'"
adb start-server
adb push tcpdump /data/local/tcpdump