用时近一个小时进行尝试，参考：https://gitee.com/andisolo/navicat-keygen 进行激活

1.打开控制台进入管理员权限

sudo -i

2.安装依赖

# install capstone

$ apt-get install libcapstone-dev
# install rapidjson

$ apt-get install rapidjson-dev
# install openssl

$ apt-get install openssl

3.其中有一个依赖需要手动编译，建立临时文件夹

mkdir /home/tmp

4.继续安装依赖

# install keystone
$ apt-get install cmake
$ git clone https://github.com/keystone-engine/keystone.git
$ cd keystone
$ mkdir build
$ cd build
$ ../make-share.sh
$ make install
$ ldconfig

5.下载编译navicat-keygen

$ git clone -b linux --single-branch https://gitee.com/andisolo/navicat-keygen.git
$ cd navicat-keygen
$ make all
$ cd..

6.下载并解压 navicat15

# 下载 navicat15

$ wget http://www.navicat.com.cn/download/direct-download?product=navicat15-premium-cs.AppImage&location=1
$ mkdir test #新建临时挂在文件

$ cd test 进入临时挂载文件

$ mount -o loop ../navicat15-premium-cs.AppImage ./ #把挂载到临时文件
$ cp -r ./test ./navicat #把挂载好的文件复制到navicat目录

$ umount ./test #取消挂载

$ rm -rf ./test #删除临时文件

7.开始激活

$ cd navicat-keygen/bin/ 进入编译好的keygen文件夹
$ ./navicat-patcher ../../navicat

8.输出以下内容即为替换根key成功

**********************************************************

* Navicat Patcher (Linux) by @DoubleLabyrinth *

* Version: 1.0 *

**********************************************************
Press ENTER to continue or Ctrl + C to abort.
[+] Try to open libcc.so … Ok!
[+] PatchSolution0 …… Ready to apply

RefSegment = 1

MachineCodeRva = 0x0000000001413e10

PatchMarkOffset = +0x00000000029ecf40
[*] Generating new RSA private key, it may take a long time…

[*] Your RSA private key:

—–BEGIN RSA PRIVATE KEY—–

MIIEowIBAAKCAQEArRsg1+6JZxZNMhGyuM8d+Ue/ky9LSv/XyKh+wppQMS5wx7QE

XFcdDgaByNZeLMenh8sgungahWbPo/5jmkDuuHHrVMU748q2JLL1E3nFraPZqoRD

…

…

B1Z5AoGBAK8cWMvNYf1pfQ9w6nD4gc3NgRVYLctxFLmkGylqrzs8faoLLBkFq3iI

s2vdYwF//wuN2aq8JHldGriyb6xkDjdqiEk+0c98LmyKNmEVt8XghjrZuUrn8dA0

0hfInLdRpaB7b+UeIQavw9yLH0ilijAcMkGzzom7vdqDPizoLpXQ

—–END RSA PRIVATE KEY—–

[*] Your RSA public key:

—–BEGIN PUBLIC KEY—–

MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArRsg1+6JZxZNMhGyuM8d

+Ue/ky9LSv/XyKh+wppQMS5wx7QEXFcdDgaByNZeLMenh8sgungahWbPo/5jmkDu

…

…

GrVJ3o8aDm35EzGymp4ON+A0fdAkweqKV6FqxEJqLWIDRYh+Z01JXUZIrKmnCkgf

QQIDAQAB

—–END PUBLIC KEY—–
*******************************************************

* PatchSolution0 *

*******************************************************

[*] Previous:

+0x0000000000000070 01 00 00 00 05 00 00 00 ……..

+0x0000000000000080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …………….

+0x0000000000000090 00 00 00 00 00 00 00 00 40 cf 9e 02 00 00 00 00 ……..@…….

+0x00000000000000a0 40 cf 9e 02 00 00 00 00 00 10 00 00 00 00 00 00 @……………

[*] After:

+0x0000000000000070 01 00 00 00 05 00 00 00 ……..

+0x0000000000000080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …………….

+0x0000000000000090 00 00 00 00 00 00 00 00 d0 d0 9e 02 00 00 00 00 …………….

+0x00000000000000a0 d0 d0 9e 02 00 00 00 00 00 10 00 00 00 00 00 00 …………….
[*] Previous:

+0x00000000029ecf40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …………….

+0x00000000029ecf50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …………….

+0x00000000029ecf60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …………….

…

…

+0x00000000029ed0c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …………….

[*] After:

+0x00000000029ecf40 ef be ad de 4d 49 49 42 49 6a 41 4e 42 67 6b 71 ….MIIBIjANBgkq

+0x00000000029ecf50 68 6b 69 47 39 77 30 42 41 51 45 46 41 41 4f 43 hkiG9w0BAQEFAAOC

+0x00000000029ecf60 41 51 38 41 4d 49 49 42 43 67 4b 43 41 51 45 41 AQ8AMIIBCgKCAQEA

…

…

…

+0x00000000029ed0c0 43 6b 67 66 51 51 49 44 41 51 41 42 ad de ef be CkgfQQIDAQAB….
[*] Previous:

+0x0000000001413e10 44 0f b6 24 18 48 8b 44 24 28 8b 50 f8 85 d2 79 D..$.H.D$(.P…y

+0x0000000001413e20 6f o

[*] After:

+0x0000000001413e10 45 31 e4 48 8d 05 2a 91 5d 01 90 90 90 90 90 90 E1.H..*.]…….

+0x0000000001413e20 90 .
[*] New RSA-2048 private key has been saved to

/home/doublesine/github.com/navicat-keygen/RegPrivateKey.pem
*******************************************************

* PATCH HAS BEEN DONE SUCCESSFULLY! *

* HAVE FUN AND ENJOY~ *

*******************************************************

9.重新打包navicat15并激活

cd ../../
$ wget https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage #下载打包工具

$ chmod +x appimagetool-x86_64.AppImage #赋予执行权限
$ ./appimagetool-x86_64.AppImage ./navicat #打包
$ chmod +x ./navicat15-premium-cs.AppImage #赋予打包好的程序执行权限

$ ./navicat15-premium-cs.AppImage #测试运行
$ ./bin/navicat-keygen –text ./RegPrivateKey.pem

$ cd /navicat-keygen/bin #进入编译好的keygen文件夹

$ ./navicat-keygen –text ./RegPrivateKey.pem
$ ./bin/navicat-keygen –text ./RegPrivateKey.pem

**********************************************************

* Navicat Keygen (Linux) by @DoubleLabyrinth *

* Version: 1.0 *

**********************************************************
选择Navicat产品类别、Navicat语言版本和填写主版本号。之后一个随机生成的 序列号 将会给出。
[*] Select Navicat product:

0. DataModeler

1. Premium

2. MySQL

3. PostgreSQL

4. Oracle

5. SQLServer

6. SQLite

7. MariaDB

8. MongoDB

9. ReportViewer
(Input index)> 1
[*] Select product language:

0. English

1. Simplified Chinese

2. Traditional Chinese

3. Japanese

4. Polish

5. Spanish

6. French

7. German

8. Korean

9. Russian

10. Portuguese
(Input index)> 0
[*] Input major version number:

(range: 0 ~ 15, default: 12)> 15
[*] Serial number:

NAVM-RTVJ-EO42-IODD
[*] Your name:

[*] Your name: DoubleLabyrinth

[*] Your organization: DoubleLabyrinth
[*] Input request code in Base64: (Double press ENTER to end)
断开网络. 找到注册窗口，填写keygen给你的 序列号，然后点击 激活
通常在线激活会失败，所以在弹出的提示中选择 手动激活。

复制 请求码 到keygen，连按两次回车结束。

最终你会得到一个base64编码的 激活码。

之复制到 手动激活 的窗口，然后点击 激活。
如果没有什么意外，应该可以成功激活。

$ rm ~/Desktop/navicat15-premium-en.AppImage

$ rm -rf ~/Desktop/navicat15-premium-en-patched

$ mv ~/Desktop/navicat15-premium-en-patched.AppImage ~/Desktop/navicat15-premium-en.AppImage