Netgear router unpacking and packaging

Environment setup

First, you need to configure the environment. The configured environment is as follows:

1. binwalk is used to unpack
2. qemu is used for debugging after packaging to prevent routers from becoming bricks
3. firmware-mod-kit is used for packaging,
   https://github.com/mirror/firmware-mod-kit
   downloading and decompressing
   

# 进入源码目录
cd firmware-mod-kit/src
 
# 执行configure文件生成Makefile文件然后make编译生成可执行文件
./configure && make

Router unpack

Router unpacking is relatively simple, binwalk or firmware-mod-kit
binwalk unpacking does not know whether it can be repacked:

binwalk XR300-V1.0.3.34_10.3.27.chk

If binwalk can output file parsing information, then

binwalk -e XR300-V1.0.3.34_10.3.27.chk

The file after unpacking is as follows:

squashfs-root is the file system, 56 should be the offset

Unpack the firmware-mod-kit and repack it:

./extract-firmware.sh XR300-V1.0.3.34_10.3.27.chk

But it prompted an error. .

Router package

Because the firmware-mod-kit unpacking error occurred, try to pack with the result of binwalk.