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Nyaruko (2012-09-10) Binary to encrypted text filter. Given some input in stdin, Nyaruko will generate a C code that reproduces this input on stdout: ./nyaruko < input.bin > output.c gcc output.c -o output ./output > regenerated.bin Output is encrypted, but both key and data are included in the output. To separate the key from the data: bash output.c > key.c perl output.c > data.c Concatenate them back to get back something functionally equivalent to the original output.c: cat key.c data.c > output.c cat data.c key.c > output.c data.c by itself still compiles and runs, but generates a different message on stdout. data.c combined with an incorrect key.c will still compile and run, but the output will be totally random. By default, Nyaruko generates a unique random key using /dev/urandom. Specifying an extra argument will make this key deterministic: ./nyaruko seed.txt < input.bin > output.c This should always be done on systems that do not have /dev/urandom. Template is based on Nyaruko, from "Haiyore! Nyaruko-san". Nyaruko won the "most surreptitious" award for the 21st IOCCC. -- omoikane@uguu.org - http://uguu.org/
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2025-08-26 |