rom xor cipher — free browser tool | fatcousin

xor encrypt or decrypt a rom · single or multi-byte repeating key · configurable byte range · hex preview · file download · runs locally

drop file

drop any rom or binary file

.nes .sfc .gb .gba .bin .rom or any binary

Select file

xor key

presets:

range

start offset (hex)length (hex) — blank = entire file

XOR is its own inverse — apply the same key twice to restore the original.

status

drop a rom or binary file to xor-cipher it

ready