When I left my last position, my friends and colleagues with whom I’ve worked for years gave me a little challenge: a PDF with a hidden ciphertext. At first I had to use Excel to decipher the ciphertext, but later I wrote a small Python tool to help me.
The simple ciphers supported by this tool are XOR, ROT, Vigenère and subtract (I added that last one because it was used in a maldoc). You can use the man page (option -m) to learn more.
cipher-tool_V0_0_1.zip (https)
MD5: B7D44090A76F66D7194D0A0D890E2CEB
SHA256: 1E8E1F112595FC08C3C20A06D172C21DDE6375EC8651A8DE6EF57B938F3E67E8
