INTERCEPT是一套强大的代码静态分析审计策略，这套策略集简单易用，占用空间小，可以通过快速且强大的多行扫描工具来扫描你的代码库。除此之外，广大研究人员还可以将其作为数据采集器和检查器，或把它当作一款跨平台的武器化ripgrep来使用。

功能介绍

代码即策略；

细粒度正则策略；

多个执行级别；

静态分析，无守护进程；

低占用空间，可自我更新的二进制文件；

易于集成在任何CI/CD管道上；

声明式策略，以降低复杂性；

无自定义策略语言；

代码即策略

“代码即策略”的思想来源于策略的管理和自动化实现这方面，通过将策略以YAML文件代码的形式来呈现，是已经过验证的软件开发最佳实践，有助于研究人员实现版本控制、自动测试和自动部署。

工作机制

1、拦截和分析命令行接口代码；

2、YAML文件策略实施；

INTERCEPT会整合环境标记、YAML策略和可选参数来生成一个全局配置文件，它可以递归扫描目标路径以查找违反策略的代码，并生成人类可读的详细扫描及分析报告。

扫描报告输出样本：

工具构建

# Standard package (intercept + ripgrep) for individual platforms
-- core-intercept-rg-*.zip
# Cross Platform Full package (intercept + ripgrep)
-- x-intercept.zip
# Build package to build on all platforms (Development)
-- setup-buildpack.zip
# Package of the latest compatible release of ripgrep (doesn't include intercept)
-- i-ripgrep-*.zip

快速开始

首先，根据自己的平台下载最新版本的INTERCEPT：

--- Darwin
curl -fSL https://github.com/xfhg/intercept/releases/latest/download/intercept-darwin_amd64 -o intercept
--- Linux
curl -fSL https://github.com/xfhg/intercept/releases/latest/download/intercept-linux_amd64 -o intercept
--- Windows
curl -fSL https://github.com/xfhg/intercept/releases/latest/download/intercept-windows_amd64 -o intercept.exe

获取样本进行快速扫描：

curl -fSLO https://github.com/xfhg/intercept/releases/latest/download/_examples.zip

现在，我们需要分析的代码已经存储在一个examples/文件夹中了，在开始之前，我们需要查看策略文件中的可选策略类型：

- scan : where we enforce breaking rules on matched patterns
- collect : where we just collect matched patterns

我们给出的演示样例将会做以下几件事情：

1、扫描目标代码中是否存在私钥：我们需要保证策略的fatal:true，并且不接受任何异常，即enforcement:true。设置环境：保证此策略将在所有环境上强制执行。

2、扫描模块是否来自兼容源而不是本地或git：我们需要保证策略的fatal:true，并且环境必须为PROD，即environment:prod。这个策略可以接受本地异常：enforcement:false。

3、收集模块使用之外的terraform资源实例。

包含上述扫描策略和收集策略的策略文件如下（examples/policy/simple.yaml）：

# This banner is shown on the start of the scanning report,
# use it to point out important documentation/warnings/contacts

Banner:
| Banner text here, drop documentation link or quick instructions on how to react to the report
Rules:
# This is the main policy block, all rules will be part of this array
# This is a rule structure block
# Each rule can have one or more patterns (regex)
# The rule is triggered by any of the patterns listed
#

# Essential settings :
# id : ( must be unique )
# type : ( scan | collect )
# fatal : ( true | false )
# enforcement : ( true | false )
# environment : ( all | anystring)
# All other settings are free TEXT to complement your final report
- name: Private key committed in code
id: 1
description: Private key committed to code version control
solution:
error: This violation immediately blocks your code deployment
type: scan
enforcement: true
environment: all
fatal: true

patterns:
- \s*(-----BEGIN PRIVATE KEY-----)
- \s*(-----BEGIN RSA PRIVATE KEY-----)
- \s*(-----BEGIN DSA PRIVATE KEY-----)
- \s*(-----BEGIN EC PRIVATE KEY-----)
- \s*(-----BEGIN OPENSSH PRIVATE KEY-----)
- \s*(-----BEGIN PGP PRIVATE KEY BLOCK-----)

# Another scan rule
- name: Compliant module source
id: 5
description: Modules should not be sourced locally nor from git
error: This breach blocks your deployment on production environments
type: scan
solution:
environment: prod
fatal: true
enforcement: false
patterns:
- source\s*.*\.git"
- \s+source\s*=\s*"((?!https\:).)

# A different type of policy rule that just collects findings matched with the patterns listed
- name: Collect sparse TF resources outside of modules.
description: The following resources were detected outside of compliant module usage
type: collect
patterns:
- (resource)\s*"(.*)"

# These are the messages displayed at the end of the report
# Clean for no finds
# Warning for at least one non-fatal find
# Critical for at least one fatal find
ExitCritical: "Critical irregularities found in your code"
ExitWarning: "Irregularities found in your code"
ExitClean: "Clean report"

项目地址

INTERCEPT：【GitHub传送门】

其他引用项目

1、Ripgrep

2、Hashicorp Sentinel

3、Open Policy Agent

*参考来源：xfhg，FB小编Alpha_h4ck编译，转载请注明来自FreeBuf.COM