# Full WriteUp
Full Writeup on our website: [http://www.aperikube.fr/docs/tjctf_2018/interference](http://www.aperikube.fr/docs/tjctf_2018/interference)
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# TL;DR
We had 2 images composed by white and black pixels. We used Stegsolve to apply operations: ```NOT(IMG1 ^ SUB(IMG1,IMG2)).```