Code review

A Pentester's Guide to Source Code ReviewCobalt

General

# Guidelines
https://rules.sonarsource.com/

# Resource
https://vladtoie.gitbook.io/secure-coding/

# Tools
https://www.sonarqube.org/downloads/
https://deepsource.io/signup/
https://github.com/pyupio/safety
https://github.com/returntocorp/semgrep
https://github.com/WhaleShark-Team/cobra
https://github.com/mhaskar/Bughound

# Find interesting strings
https://github.com/s0md3v/hardcodes
https://github.com/micha3lb3n/SourceWolf
https://libraries.io/pypi/detect-secrets

# Tips
1.Important functions first
2.Follow user input
3.Hardcoded secrets and credentials
4.Use of dangerous functions and outdated dependencies
5.Developer comments, hidden debug functionalities, configuration files, and the .git directory
6.Hidden paths, deprecated endpoints, and endpoints in development
7.Weak cryptography or hashing algorithms
8.Missing security checks on user input and regex strength
9.Missing cookie flags
10.Unexpected behavior, conditionals, unnecessarily complex and verbose functions

JavaScript

https://jshint.com/
https://github.com/jshint/jshint/

NodeJS

https://github.com/ajinabraham/nodejsscan

Electron

https://github.com/doyensec/electronegativity
https://github.com/doyensec/awesome-electronjs-hacking

Python

# bandit
https://github.com/PyCQA/bandit
# pyt
https://github.com/python-security/pyt
# atheris
https://github.com/google/atheris
# aura
https://github.com/SourceCode-AI/aura

.NET

# dnSpy
https://github.com/0xd4d/dnSpy

# .NET compilation
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe test.cs

# Cheatsheet
https://www.c-sharpcorner.com/UploadFile/ajyadav123/net-penetration-testing-cheat-sheet/

PHP

# phpvuln
https://github.com/ecriminal/phpvuln

C/C++

# flawfinder
https://github.com/david-a-wheeler/flawfinder

Java

# JD-Gui
https://github.com/java-decompiler/jd-gui

# Java compilation step-by-step
javac -source 1.8 -target 1.8 test.java
mkdir META-INF
echo "Main-Class: test" > META-INF/MANIFEST.MF
jar cmvf META-INF/MANIFEST.MF test.jar test.class

Task	Command
Execute Jar	java -jar [jar]
Unzip Jar	unzip -d [output directory] [jar]
Create Jar	jar -cmf META-INF/MANIFEST.MF [output jar] *
Base64 SHA256	sha256sum [file] | cut -d' ' -f1 | xxd -r -p | base64
Remove Signing	rm META-INF/.SF META-INF/.RSA META-INF/*.DSA
Delete from Jar	zip -d [jar] [file to remove]
Decompile class	procyon -o . [path to class]
Decompile Jar	procyon -jar [jar] -o [output directory]
Compile class	javac [path to .java file]