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hashcat rule minimizer\n\n### About\n\nThis is a semi-practical toy project that implements a subset of the [Hashcat rule language](https://hashcat.net/wiki/doku.php?id=rule_based_attack).\n\nCurrently there's:\n- [x] a parser\n- [x] an evaluator\n- [x] a very bare-bones rule minimizer\n- [x] a terminal REPL\n- [ ] Eventually it would be nice to make it analyze rulesets and minimize/deduplicate them (more effectively than `sort -u`)\n- [ ] Filtering/mangling rules to ensure they stick to specific masks/character sets would also be nice\n\n\nIt looks like this:\n```\n=====================\n\\-- rulemin repl --/\n ==================\n#init# eval\n#dict# testWord123\n#dict# MyoTHERward\n#dict#\n#eval# { { $A $B$C D0D0D0 K\n│                                              { { $A $B$C D0D0D0 K                                              │\n├────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤\n│ [RotateLeft, RotateLeft, Append(65), Append(66), Append(67), Omit(0, 1), Omit(0, 1), Omit(0, 1), SwapBack]     │\n├────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤\n│ [RotateLeft, RotateLeft, Append(65), Append(66), Append(67), Omit(0, 3), SwapBack]                             │\n│ testWord123                                           │                                            ord123teACB │\n│ MyoTHERward                                           │                                            ERwardMyACB │\n#eval# l $A } $B$C D0D0 K\n│                                         l $A } $B$C D0D0 K                                         │\n├────────────────────────────────────────────────────────────────────────────────────────────────────┤\n│ [Lowercase, Append(65), RotateRight, Append(66), Append(67), Omit(0, 1), Omit(0, 1), SwapBack]     │\n├────────────────────────────────────────────────────────────────────────────────────────────────────┤\n│ [Lowercase, Append(65), RotateRight, Append(66), Append(67), Omit(0, 2), SwapBack]                 │\n│ testWord123                                     │                                     estword123CB │\n│ MyoTHERward                                     │                                     yotherwardCB │\n```\n\n### Implemented operations:\n\n```\n# 0 operands:\n:\nl\nu\nr\nd\n{\n}\n[\n]\nk\nK\n\n# 1 operand:\nD\np\n.\n,\n@\n$\n^\n\n# two operands:\n*\nO\nx\no\ni\ns\n```\n\n**Not** implemented:\n- `%1s` `/` and `p` positions\n```\n# 0 operands:\nc\nC\nt\nf\nq\n4\n6\nM\nQ\nE\n\n# 1 operand:\nL\nR\n+\n-\ny\nY\ne\n\nT\n'\nz\nZ\n\u003c\n\u003e\n_\n!\n/\n(\n)\n\n# 2 operands:\n=\n%\n\n# 3 operands:\nX\n3\n```\n\n### Fuzzing\n\n```shell\n# may need: cargo install cargo-fuzz\ncd rulelib\ncargo fuzz build\ncargo fuzz run fuzz_target_1 -- -max_len=200\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcfcs%2Fhashcat-rulemin","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcfcs%2Fhashcat-rulemin","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcfcs%2Fhashcat-rulemin/lists"}