bfcrypt - Crypto scanner

There are several existing crypto scanners, but they are all for Windows, and are closed source:

• PEiD with the Krypto Analyzer (KANAL) plugin
• IDA Pro with the Findcrypt plugin
• OllyDbg with the SnD Crypto Scanner
• x3chun's Crypto Searcher
• Keygener Assistant
• Hash & Crypto Detector (HCD)
• Draft Crypto Analyzer (DRACA)

As I needed a tool for analyzing firmware images under Linux, I've started coding my own, called bfcrypt and available on github under the GPLv2 license.

For now, it can detect Blowfish and MD5, but it will support more in the future.

Example:

$ bfcrypt ShrekW.BIN

Blowfish P-array  (0x243f6a88) found at 0x0008bc90

Blowfish S-box[0] (0xd1310ba6) found at 0x0008bcd8

Blowfish S-box[1] (0x4b7a70e9) found at 0x0008c0d8

Blowfish S-box[2] (0xe93d5a68) found at 0x0008c4d8

Blowfish S-box[3] (0x3a39ce37) found at 0x0008c8d8