# Cybersecurity Guide


  • HASH
  • [CRC-32] [MD5] [SHA-1] [SHA-256] [SHA-512]
  • ENCODING / DECODING
  • [Base16(enc)] [Base16(dec)] [Base64(enc)] [Base64(dec)] [URL(enc)] [URL(enc)(+ASCII)] [URL(dec)] [HTML_entity(enc)] [HTML_entity(dec)]
  • CONVERSION
  • [Hex] [Dec] [Oct] [Bin]

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  • ๐Ÿ”จ ONLINE TOOL
  • ๐Ÿšฉ WRITE-UP
  • ๐Ÿฐ CODE
  • ๐Ÿ“ฆ OTHER
    •  ๐Ÿน Tool
    •  ๐Ÿงช Simulation
    •  ๐Ÿ“„ Reference
    •  ๐Ÿ’พ Misc
  • Root me write-up : Bash - System 2
    Root me write-up : Bash - System 2
    It looks like that it can be solved by changing the "ls" command to "cat". However, since there is no "-l" ...
  • Root me write-up : Logs analysis - web attack
    Root me write-up : Logs analysis - web attack
    This is a quiz to find flags in web server logs. The web server log contains the base64 encoding value in the order variable, and...
  • Root me write-up : Command & Control - level 2
    Root me write-up : Command & Control - level 2
    When I unzip the downloaded file, a.dump file is created. The goal is to find the host name in this dump file. I used the "v...
  • How to check USB connection logs
    How to check USB connection logs
    USBDeview download: https://www.nirsoft.net/utils/usb_devices_view.html if you want to see USB connection logs? ...
  • Root me write-up : ELF x64 - Stack buffer overflow - basic
    Root me write-up : ELF x64 - Stack buffer overflow - basic
    To comply with the write-up rule of root-me.org, in this write-up, I just talk about some hints related this challenge. Here is no solution...
  • How to send a link message using javascript in KAKAO talk.
    How to send a link message using javascript in KAKAO talk.
    To send a link message using javascript in KAKAO talk, the API source provided by Kakao Developers is requred. ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ๋ฅผ ์ด์šฉํ•˜์—ฌ ์นดํ†ก ๋งํฌ ๋ฉ”์‹œ์ง€๋ฅผ ์ „์†กํ•˜๋ ค๋ฉด...
  • Root me write-up : Perl - Command injection
    Root me write-up : Perl - Command injection
    Retrieve the password stored in .passwd. There are .passwd, ch7.pl and setuid-wrapper files. This challenge seems to read the ....
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