Cryptography
Scrumbled and encrypted text
Whatever happen, google is your friend. There are a lot cryptography tools online. Some of good tool are made offline like OpenSSL.
Classic cipher / Simple decoder online tool
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Modern cryptography
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- 3.Cryptool
- 4.John the Ripper
- 5.Hashcat
OpenSSL cheatsheet
- Decrypt a file using RSA private key
openssl rsautl -decrypt -inkey pub_priv.key -in ciphertext.file -out decrypted.file
- Decrypt a file using AES-256-CBC and a keyfile
openssl enc -d -aes-256-cbc -in ciphertext.file -out cleartext.file -pass file:./key.file
- Decrypt a file using AES-256-CBC
openssl enc -aes-256-cbc -d -in file.txt.enc -out file.txt
- Decrypt a file using AES-256-CBC with base64 encoded
openssl enc -aes-256-cbc -d -a -in file.txt.enc -out file.txt
Cracking compressed file
- 1.John the Ripper -
john --wordlist=/usr/share/wordlists/rockyou.txt hash.txt
- 2.fcrackzip -
fcrackzip -D -u -p rockyou.txt filename.zip
Note:
Sometimes there are some challenges that require you to develop your own decryptor for that particular challenge. Just make sure you have a good scripting/programming language to solve the challenges.
Last modified 2mo ago