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Cybersecurity-Projects/PROJECTS/beginner/hash-cracker/README.md

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Cybersecurity Projects C++ License: AGPLv3

Multi-threaded hash cracking tool with dictionary, brute-force, and rule-based mutation attacks.

This is a quick overview — security theory, architecture, and full walkthroughs are in the learn modules.

What It Does

  • Crack MD5, SHA1, SHA256, and SHA512 hashes with auto-detection from hash length
  • Dictionary attacks using memory-mapped wordlists for zero-copy large file handling
  • Brute-force attacks with configurable character sets and keyspace partitioning
  • Rule-based mutations (capitalize, leet speak, digit append, reverse, toggle case)
  • Multi-threaded with zero-contention work partitioning across all CPU cores
  • Salt support with prepend/append positioning
  • Rich terminal progress display with speed, ETA, and progress bar

Quick Start

./install.sh
hashcracker --hash 5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8 \
  --wordlist wordlists/10k-most-common.txt
# ✔ CRACKED: password

[!TIP] This project uses just as a command runner. Type just to see all available commands.

Install: curl -sSf https://just.systems/install.sh | bash -s -- --to ~/.local/bin

Demo Hashes

Try these — all crack instantly against the included wordlist:

Hash Type Plaintext
5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8 SHA256 password
8621ffdbc5698829397d97767ac13db3 MD5 dragon
ed9d3d832af899035363a69fd53cd3be8f71501c SHA1 shadow 
hashcracker --hash 8621ffdbc5698829397d97767ac13db3 --wordlist wordlists/10k-most-common.txt
hashcracker --hash ed9d3d832af899035363a69fd53cd3be8f71501c --wordlist wordlists/10k-most-common.txt --rules
hashcracker --hash 5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8 --bruteforce --charset lower --max-length 8

Learn

This project includes step-by-step learning materials covering security theory, architecture, and implementation.

Module Topic
00 - Overview Prerequisites and quick start
01 - Concepts Security theory and real-world breaches
02 - Architecture System design and data flow
03 - Implementation Code walkthrough
04 - Challenges Extension ideas and exercises

License

AGPL 3.0