141 lines
4.8 KiB
Markdown
141 lines
4.8 KiB
Markdown
# My use cases for CyberChef
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### Formatting MAC addresses
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Cisco seems to require a different format for every solution they have. I use this almost daily, so change the format of one or multiple MAC addresses.
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Input:
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`aa-aa-aa-bb-bb-bb`
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Output:
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```
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aaaaaabbbbbb
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AAAAAABBBBBB
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aa-aa-aa-bb-bb-bb
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AA-AA-AA-BB-BB-BB
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aa:aa:aa:bb:bb:bb
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AA:AA:AA:BB:BB:BB
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aaaa.aabb.bbbb
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AAAA.AABB.BBBB
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```
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[Try it yourself](https://baked.brrl.net/#recipe=Format_MAC_addresses('Both',true,true,true,true,false)&input=YWEtYWEtYWEtYmItYmItYmI)
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**Tipp**: the easiest way to change the format of multiple formats, is to choose the desired format, input 1 MAC address per line, and remove the empty lines with a `Find/ Replace` operation with the following regex search `^(?:[\t ]*(?:\r?\n|\r))+`. For more information, visit [this post](https://ittavern.com/cyberchef-how-to-remove-empty-lines/).
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### Looking up Linux permissions
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Simple way to switch between various representations and shows the permissions.
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Input:
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`-rw-r--r--`
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Output:
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```
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Textual representation: -rw-r--r--
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Octal representation: 0644
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File type: Regular file
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+---------+-------+-------+-------+
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| | User | Group | Other |
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+---------+-------+-------+-------+
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| Read | X | X | X |
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+---------+-------+-------+-------+
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| Write | X | | |
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+---------+-------+-------+-------+
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| Execute | | | |
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+---------+-------+-------+-------+
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```
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[Try it yourself](https://baked.brrl.net/#recipe=Parse_UNIX_file_permissions\(\)&input=LXJ3LXItLXItLQo)
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### Working with IT subnets
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This function makes my life easier. It shows me the general network information and the range of a IP addresses for a subnet.
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Input:
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`10.121.10.8/28`
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Output:
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```
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Network: 10.121.10.8
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CIDR: 28
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Mask: 255.255.255.240
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Range: 10.121.10.0 - 10.121.10.15
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Total addresses in range: 16
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10.121.10.0
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10.121.10.1
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10.121.10.2
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10.121.10.3
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10.121.10.4
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[...]
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```
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[Try it yourself](https://baked.brrl.net/#recipe=Parse_IP_range\(true,true,false\)&input=MTAuMTIxLjEwLjgvMjg)
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### Converting blog titles to an URL-friendly format
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I've created a small 'Recipe' to format my titles to URL/ text file friendly formats.
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Input:
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`My use cases for CyberChef`
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Output:
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`my-use-cases-for-cyberchef`
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[Try it yourself](https://baked.brrl.net/#recipe=Find_/_Replace\(%7B'option':'Regex','string':'-'%7D,'',true,false,true,false\)Find_/_Replace\(%7B'option':'Regex','string':'%20%20'%7D,'%20',true,false,true,false\)Find_/_Replace\(%7B'option':'Regex','string':'%5C%5C.'%7D,'',true,false,true,false\)Find_/_Replace\(%7B'option':'Regex','string':'%20'%7D,'-',true,false,true,false\)To_Lower_case\(\)&input=TXkgdXNlIGNhc2VzIGZvciBDeWJlckNoZWY)
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### Finding the difference in text
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I only use this function for small configuration files or texts. For larger ones, I prefer vimdiff or Notepad++.
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[Try it yourself](https://baked.brrl.net/#recipe=Diff\('%5C%5Cn%5C%5Cn','Character',true,true,false,true\)&input=SSBzd2VhciwgdGhlcmUgaXMgbm90aGluZyBtaXNzaW5nLgoKSSBzd2VhciwgdGhlcmUgaXMgbWlzc2luZy4)
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### Changing chars to upper/lower case
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I rarely use this function, but it has its use cases. Some passwords contain many characters, that can be difficult to differentiate, like `l`, `I`, `1`, `O`,`0`, and so on. I tend to use this feature if I only have 1 more try left, just to make sure.
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And I know that copy+paste exists, but that isn't always an option.
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[Try it yourself](https://baked.brrl.net/#recipe=To_Upper_case\('All'\)&input=VEhsU18xU19hX1A0UzV3b3JE)
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### Adding or remove line numbers
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This is self-explanatory. I do not need this feature that often, but comes in handy from time to time.
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### Hashing things
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If you need a hash of a string or file, CyberChef offers many algorithms. SHA, MD, bcrypt, and so on.
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[Try it yourself](https://baked.brrl.net/#recipe=SHA2\('512',64,160\)&input=VEhsU18xU19hX1A0UzV3b3JE)
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### Generating QR codes
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I use it monthly to generate the QR code for our guest WLAN. Add `WIFI:S:MySSID;T:WPA;P:TH1S_P455W0RD;;` into the input field and it generates the QR code for you. I regularly use it for URLs too.
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[Try it yourself](https://baked.brrl.net/#recipe=Generate_QR_Code\('PNG',8,2,'Medium'\)&input=V0lGSTpTOk15U1NJRDtUOldQQTtQOlRIMVNfUDQ1NVcwUkQ7Ow)
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### Generating dummy texts / Lorem Ipsum
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Really helpful to generate dummy text for all kinds of mock-ups.
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[Try it yourself](https://baked.brrl.net/#recipe=Generate_Lorem_Ipsum\(3,'Paragraphs'\))
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### Various utilities
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I won't go into too much detail since it is fairly self-explanatory. Sorting lines, convert masses or distances, remove white spaces, Find/Replace, find unique strings, converting hexdumps, converting date/time formats, and so many more.
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## Conclusion
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CyberChef has become a great tool with many use cases. It is more the quick and dirty solution, but this is often all I need.
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The source code can be found [here](https://github.com/gchq/CyberChef).
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---
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