Solutions for some Android models without tcpdump

Enter the mount command

Mount

Rootfs on/type rootfs (RO, relatime)

Tmpfs on/dev type tmpfs (RW, relatime, mode = 755)

Devpts on/dev/PTS type devpts (RW, relatime, model = 600)

Proc on/proc type proc (RW, relatime)

Sysfs on/sys type sysfs (RW, relatime)

Tmpfs on/sqlite_stmt_journals type tmpfs (RW, relatime, size = 4096 K)

None on/dev/cpuctl type cgroup (RW, relatime, CPU)

/Dev/block/mtdblock3 on/system type yaffs2 (RO, relatime)

/Dev/block/mtdblock5 on/Data Type yaffs2 (RW, nosuid, nodev, relatime)

/Dev/block/mtdblock4 on/cache type yaffs2 (RW, nosuid, nodev, relatime)

/Dev/block // vold/179: 1 on/sdcard type vfat (RW, dirsync, nosuid, nodev, noexec, rela

Time, uid = 1000, gid = 1015, fmask = 0702, dmask = 0702, allow_utime = 0020, codePage = cp437, IOC

Harset = iso8859-1, shortname = mixed, utf8, errors = remount-Ro)

 

We can see that

/Dev/block/mtdblock3 on/system type yaffs2 (RO, relatime)

 

Remount the input command

Mount-O remount/dev/block/mtdblock3/System

 

 

Input mount again

We can see that

# Mount

Mount

Rootfs on/type rootfs (RO, relatime)

Tmpfs on/dev type tmpfs (RW, relatime, mode = 755)

Devpts on/dev/PTS type devpts (RW, relatime, model = 600)

Proc on/proc type proc (RW, relatime)

Sysfs on/sys type sysfs (RW, relatime)

Tmpfs on/sqlite_stmt_journals type tmpfs (RW, relatime, size = 4096 K)

None on/dev/cpuctl type cgroup (RW, relatime, CPU)

/Dev/block/mtdblock3 on/system type yaffs2 (RW, relatime)

/Dev/block/mtdblock5 on/Data Type yaffs2 (RW, nosuid, nodev, relatime)

/Dev/block/mtdblock4 on/cache type yaffs2 (RW, nosuid, nodev, relatime)

/Dev/block // vold/179: 1 on/sdcard type vfat (RW, dirsync, nosuid, nodev, noexec, rela

Time, uid = 1000, gid = 1015, fmask = 0702, dmask = 0702, allow_utime = 0020, codePage = cp437, IOC

Harset = iso8859-1, shortname = mixed, utf8, errors = remount-Ro)

 

You can see that/system can be deleted and modified as needed.

 

Import the tcpdump file to the/system/xbin/directory.

ADB push D:/tcpdump/system/xbin/

 

Then run the command

 

# Cd System

CD System

# Cd xbin

CD xbin

# Ls

Ls

Tcpdump

#./Tcpdump

./Tcpdump

./Tcpdump: Permission denied

# Chmod + x tcpdump

Chmod + x tcpdump

#./Tcpdump

./Tcpdump

Tcpdump: verbose output suppressed, use-V or-VV for full protocol decode

Listening On rmnet0, link-type en10mb (Ethernet), capture size 96 bytes

 

After adding permissions, tcpdump can be used.