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Joern部署和使用

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部署joern

当然最快的方法是发送给codex或者cc：help me to install joern on this machine for all users.

joern需要运行在linux系统的JDK19环境下，先安装JDK19

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wget https://download.java.net/java/GA/jdk19.0.2/fdb695a9d9064ad6b064dc6df578380c/7/GPL/openjdk-19.0.2_linux-x64_bin.tar.gz

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解压

注意解压目标目录需要先创建（mkdir /path/to/your/workspace）

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tar -xzf openjdk-19.0.2_linux-x64_bin.tar.gz -C /home/lihao/JDK19

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配置环境变量，

编辑 ~/.bashrc添加export PATH=”/home/lihao/JDK19/bin:$PATH”验证安装

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vim ~/.bashrc

注意这里是你实际解压后的bin目录，使用ls查看实际位置

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验证安装

记得重启或者新开一个终端

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java --version

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Joern安装

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wget https://github.com/joernio/joern/releases/latest/download/joern-install.sh

如果是VM虚拟机，至于虚拟机如何科学上网，自行查询。当然也可物理机下载后上传虚拟机

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添加可执行权限
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chmod +x ./joern-install.sh

运行安装程序

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./joern-install.sh --interactive

安装时间会相对比较长

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启动joern-cli

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cd /opt/joern/joern-cli
./joern

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当然也可以添加软链接

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ln -sf /opt/joern/joern-cli/joern /usr/local/bin/joern
ln -sf /opt/joern/joern-cli/joern-parse /usr/local/bin/joern-parse
ln -sf /opt/joern/joern-cli/joern-export /usr/local/bin/joern-export
ln -sf /opt/joern/joern-cli/joern-scan /usr/local/bin/joern-scan

使用joern

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joern-parse '/root/F&Q/example/sample.c' --language C
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joern-export --repr ast --out ast_out
joern-export --repr cfg --out cfg_out
joern-export --repr pdg --out pdg_out