RSAcrack

Obtain the passphrase of a private key (id_rsa), this tool uses the ssh-keygen binary to perform a brute force attack until a successful collision occurs.

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Download

wget --no-check-certificate -q "https://raw.githubusercontent.com/d4t4s3c/RSAcrack/refs/heads/main/RSAcrack" && chmod +x RSAcrack

Download & Install (PATH)

wget --no-check-certificate -q "https://raw.githubusercontent.com/d4t4s3c/RSAcrack/refs/heads/main/RSAcrack" -O /usr/bin/RSAcrack && chmod +x /usr/bin/RSAcrack

Usage

RSAcrack -k <KEY> -w <WORDLIST>

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Warning

The cracking speed can vary depending on which tool the key is generated with.

Key Generated	Cracking Speed
OpenSSL	✔️
ssh-keygen	❌
PuTTYgen	✔️
8gwifi	✔️

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