RainbowCrack is a general propose implementation of Philippe Oechslin’s faster time-memory trade-off technique.
In short, the RainbowCrack tool is a hash cracker. A traditional brute force cracker try all possible plaintexts one by one in cracking time. It is time consuming to break complex password in this way. The idea of time-memory trade-off is to do all cracking time computation in advance and store the result in files so called “rainbow table”. It does take a long time to precompute the tables. But once the one time precomputation is finished, a time-memory trade-off cracker can be hundreds of times faster than a brute force cracker, with the help of precomputed tables.
Some ready to work lanmanager and md5 tables are demonstrated in Rainbow Table section. One interesting table set is the lm configuration #6 tables, with which we can break any windows password up to 14 characters in a few minutes.
The latest version of RainbowCrack is 1.2
| download | platform | supported charset | supported algorithm |
| rainbowcrack-1.2-win.zip(547K) rainbowcrack-1.2-src.zip(44K) | windows binary source for windows and linux | customizable | lm, md5, sha1, customizable |
| rainbowcrack-1.1-win.zip(403K) rainbowcrack-1.1-win-src.zip(59K) | windows binary windows source | customizable | lm |
| rainbowcrack-1.01-win.zip(400K) rainbowcrack-1.01-win-src.zip(56K) | windows binary windows source | alpha and alpha-numeric | lm |
| rainbowcrack-1.0-win.zip(400K) rainbowcrack-1.0-win-src.zip(56K) | not recommended | ||
lm: The LanManager hash algorithm. “lm” table can be used to break windows password.
customizable charset: Charset of rainbow table can be customized as described in documentation.
customizable algorithm: Support of new algorithm can be done with ease, as described in FAQ. A ready to work algorithm patch supporting NTLM, MD2, MD4 and RIPEMD160 is here Algorithm patch for RainbowCrack 1.2(3K).
Frequently Asked Questions
RainbowCrack tutorial introduces basic steps to make rainbowcrack tool working.
Large charset configurations for RainbowCrack outlines a lot of tips when generating large rainbow tables, also two new configurations introduced.
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