What is the pricing for Hash Extender?

Hash Extender is free. Download and setup instructions are at https://github.com/iagox86/hash_extender/.

What are alternatives to Hash Extender?

Alternatives to Hash Extender listed on CybersecTools: 1. Managed Autonomous Pentesting (MAP) - Managed continuous autonomous pentesting using payload-less exploitation and attack paths (Commercial) 2. Vulneri Pentest - Continuous pentest platform simulating real attacks across web, cloud, and network assets. (Commercial) 3. Tenzai - Agentic AI platform for continuous, autonomous penetration testing of enterprise apps. (Commercial) 4. ZeroThreat.ai - Automated pentesting platform for web apps and APIs with AI-driven exploit validation. (Commercial) 5. Webray RayBox - Automated penetration testing appliance covering recon-to-exploitation attack chain. (Commercial) Compare all Hash Extender alternatives at https://cybersectools.com/alternatives/hash-extender

What deployment and organization size does Hash Extender fit?

Hash Extender is available as on-premises software. It is listed for mid-market companies and enterprises. It is free.

Hash Extender

Hash Extender is a command-line tool that automates length extension attacks against various hashing algorithms including MD5, SHA-1, SHA-256, and others.

Offensive Security Penetration TestingOn-PremisesMid-Market · EnterpriseFree1,188

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What is Hash Extender?

Hash Extender is a command-line tool developed by Ron Bowes that implements length extension attacks against multiple hashing algorithms.

The tool supports attacks against MD4, MD5, RIPEMD-160, SHA-0, SHA-1, SHA-256, SHA-512, and WHIRLPOOL hash functions. Length extension attacks exploit a vulnerability in certain hash functions where an attacker can append data to an original message and compute the hash of the extended message without knowing the original message content.

Hash Extender simplifies the process of performing these cryptographic attacks by automating the complex mathematical operations required. The tool takes the original hash, known data, and additional data to append as inputs, then generates the extended hash and the complete message that would produce that hash.

This functionality makes it useful for penetration testing scenarios where hash length extension vulnerabilities need to be identified and exploited in web applications or other systems that use vulnerable hash functions for authentication or integrity verification.

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