Yara_fn IDAPython script Logo

Yara_fn IDAPython script

0
Free
117
28 Aug 2025
10 September 2025
Visit Website

Yara_fn is an IDAPython script that generates YARA rules for reverse engineering and malware analysis workflows within IDA Pro. The script analyzes the current function and creates YARA rules that match basic blocks of code. The tool automatically masks out relocation bytes during rule generation to ensure portability across different memory layouts. It ignores jump instructions to focus on the core functionality of code blocks rather than control flow specifics. When python-yara is installed on the system, the script includes validation functionality that tests the generated rule against segments in the current file. This validation step ensures the rule will match at least one segment, providing immediate feedback on rule effectiveness. The script integrates directly into the IDA Pro environment through the IDAPython interface, allowing analysts to generate detection rules without leaving their reverse engineering workflow. This integration streamlines the process of creating signatures for identified malicious code patterns.

FEATURES

SIMILAR TOOLS

Code to prevent a managed .NET debugger/profiler from working.

Intezer is a cloud-based malware analysis platform that detects and classifies malware using genetic code analysis.

An open source machine code decompiler that converts binary executables into readable C source code across multiple architectures and file formats.

yextend extends Yara's functionality by automatically handling archived and compressed content inflation, enabling pattern matching on files buried within multiple layers of archives.

Joe Sandbox Community provides automated cloud-based malware analysis across multiple OS platforms.

Valkyrie is a sophisticated file verdict system that enhances malware detection through behavioral analysis and extensive file feature examination.

An open source .NET deobfuscator and unpacker that restores packed and obfuscated assemblies by reversing various obfuscation techniques.

A tool that extracts and deobfuscates strings from malware binaries using advanced static analysis techniques.

A Python script that converts shellcode into a PE32 or PE32+ file.

PINNED

Proton Pass Logo

Proton Pass is a cross-platform password manager that provides encrypted storage, password generation, and security monitoring features with integrated 2FA and dark web monitoring capabilities.

Data Protection
NordVPN Logo

NordVPN is a commercial VPN service that encrypts internet connections and hides IP addresses through a global network of servers, featuring integrated threat protection and multi-device support.

Network Security
Mandos Logo

Fractional CISO service that helps B2B companies implement security leadership to win enterprise deals, achieve compliance, and develop strategic security programs.

Consulting
Checkmarx SCA Logo

Checkmarx SCA

A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.

Application Security
Orca Security Logo

Orca Security

A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.

Cloud Security
DryRun Logo

DryRun

A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.

Application Security
CybersecTools logoCybersecTools

Explore the largest curated directory of cybersecurity tools and resources to enhance your security practices. Find the right solution for your domain.

Operated by:

Mandos Cyber • KVK: 97994448

Netherlands • contact@mandos.io

VAT: NL005301434B12

Copyright © 2025 - All rights reserved