Build tcpdump for Android
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chatch Merge pull request #3 from ncisoft/master
build script for Android x86 simulator
Latest commit 2ec8d28 May 20, 2018

README.md

Overview

This script will cross compile tcpdump for use on Android devices.

It was written by Loic Poulain on OMAPpedia. See http://omappedia.org/wiki/USB_Sniffing_with_tcpdump for full details.

Build

Install the Android NDK then:

gpg --recv-key E089DEF1D9C15D0D
    gpg: requesting key D9C15D0D from hkp server keys.gnupg.net
    gpg: key D9C15D0D: "The Tcpdump Group (Package signing key) <release@tcpdump.org>" 2 new signatures
    gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
    gpg: depth: 0  valid:   2  signed:  27  trust: 0-, 0q, 0n, 0m, 0f, 2u
    gpg: depth: 1  valid:  27  signed:  20  trust: 18-, 0q, 0n, 6m, 3f, 0u
    gpg: next trustdb check due at 2016-11-28
    gpg: Total number processed: 1
    gpg:         new signatures: 2

gpg --fingerprint E089DEF1D9C15D0D
    pub   3104R/D9C15D0D 2013-05-13 [expires: 2023-05-11]
          Key fingerprint = 1F16 6A57 42AB B9E0 249A  8D30 E089 DEF1 D9C1 5D0D
    uid                  The Tcpdump Group (Package signing key) <release@tcpdump.org>

export NDK=/ndk/is/here  
./build-tcpdump

Install on Droid

> adb root
> adb remount
> adb push tcpdumpbuild/tcpdump /system/xbin/tcpdump
> adb shell
# mount | grep system

or # grep system /proc/mounts /dev/block/xxxxxxxx /system ext4 ro,relatime,barrier=1,data=ordered 0 0 # mount -o remount,ro /dev/block/xxxxxxxx /system

Run

# tcpdump -D (or run netcfg)
1.eth0
2.any (Pseudo-device that captures on all interfaces)
3.lo

# tcpdump -vv -i eth0 -s 0 -w /sdcard/dump.cap