Online Cryptologist's Swiss Army Knife!
CyberChef:
https://gchq.github.io/CyberChef/
There is also a desktop version of this if interested for download directly from github:
https://github.com/gchq/CyberChef
It comes in handy quite often in the RCE world
[培训]内核驱动高级班，冲击BAT一流互联网大厂工作，每周日13:00-18:00直播授课
