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https://github.com/leksus-04/ctf-flag-generator

:triangular_flag_on_post: Flexible tool for generating flags for CTFs
https://github.com/leksus-04/ctf-flag-generator

ctf flag python tool

Last synced: about 1 month ago
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:triangular_flag_on_post: Flexible tool for generating flags for CTFs

Host: GitHub
URL: https://github.com/leksus-04/ctf-flag-generator
Owner: LeKSuS-04
License: gpl-3.0
Created: 2021-06-21T14:37:32.000Z (over 3 years ago)
Default Branch: main
Last Pushed: 2021-06-22T07:17:15.000Z (over 3 years ago)
Last Synced: 2024-11-10T08:38:51.735Z (3 months ago)
Topics: ctf, flag, python, tool
Language: Python
Homepage:
Size: 25.4 KB
Stars: 5
Watchers: 1
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md
- License: LICENSE

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README

        # :triangular_flag_on_post: CTF flag generator

### Flexible tool for generating flags for CTFs

### Usage: 

    ctfgen [options] [flags]

    * You can provide multiple flags;

    * Everything from the first parameter that cannot be interpreted as option will be interpreted as flags.

### Options:

    -c, --count            Amount of variations generated for each flag. Set to 1 by default;

    -f, --file                Read flags from file. Each line will be interpreted as separate flag;

    -h, --help                      Display this help message;

    -i, --interactive               Run in interactive mode;

    -o, --output              Redirect output into file instead of console;

    -s, --settings            Provide custom configuration file (you can modify standart instead).

### Examples:

    ctfgen this is flag         | Generates three flags, from "this", "is" and "flag"

    ctfgen "this is flag"       | Generates flag from string "this is flag"

    ctfgen -c 15 yoooooooo      | Generates 15 random flags from "yoooooooo"

    ctfgen -c 4 -f input.txt -o flags.txt   | Generates 4 random flags from each line from input.txt file 

                                            | and outputs them into flags.txt

    ctfgen -s ~/custom.json "Hello, world!" | Generates flag from "Hello, world!" using rules from ~/custom.json

### Configuration file:

    The configuration file must be named "config.json" and placed in the same directory as the script; Otherwise, you have to specify path to configuration file using --settings option.

Configuration file is 
    { 
        "FlagPrefix" : "flag{", 
        "FlagPostfix" : "}", 
 
 
 
        "AlwaysChange" : [ 
            { 
                "'" : [""], 
                " " : ["_", "-"], 
                "lol" : ["lul"] 
            } 
        ], 
 
 
        "SometimesChange" : [ 
            { 
                "a" : ["4"], 
                "b" : ["6"], 
                "e" : ["3"], 
                "g" : ["6", "9"], 
                "i" : ["1"], 
                "j" : ["1"], 
                "l" : ["1"], 
                "o" : ["0"], 
                "q" : ["9"], 
                "s" : ["5"], 
                "t" : ["7"], 
 
                "for" : ["4"], 
                "to" : ["2"], 
                "ate" : ["8"] 
            } 
        ], 
 
 
        "CaseSettings" : [ 
            { 
                "ChangeCase" : true, 
                "SetCase" : "random" 
 
            } 
        ] 
    }

a JSON file with following structure: | Prefix used to each flag; | Postfix used to each flag; | Prefix and postfix are not affected by following settings; | | | Dictionary of phrases that will always be changed ; | | "'" symbol will be removed; | " " symbol will be changed randomly to "_" or "-".; | "lol" will be changed to "lul"; | | All rules in this section must be written in lower case; | | | Dictionary of phrases that will sometimes be changed; | | "a" symbol has a chance to be changed to "4"; | "b" symbol has a chance to be changed to "6"; | "e" symbol has a chance to be changed to "3"; | "g" symbol has a chance to be changed to "6" or "9"; | "i" symbol has a chance to be changed to "1"; | "j" symbol has a chance to be changed to "1"; | "l" symbol has a chance to be changed to "1"; | "o" symbol has a chance to be changed to "0"; | "q" symbol has a chance to be changed to "9"; | "s" symbol has a chance to be changed to "5"; | "t" symbol has a chance to be changed to "7"; | | "for" has a chance to be changed to "4"; | "to" has a chance to be changed to "2"; | "ate" has a chance to be changed to "8"; | | All rules in this section must be written in lower case; | | | Settings defining case of flag; | | Determines whether to change the case of given flag (true/false); | If "ChangeCase" is set to true, this determines case | of genereated flag. Could be set to: |       * lower     - only lowercase |       * upper     - only uppercase