Cryptoversing
90 points Hard

Hello! My manager sent me a file named xor.bin, and he wants from you to crack this program, and get the flag.

https://mega.nz/#!neYzjQQS!mKNcdADY8u_V0Iy1a57gQpjNGTni03l7lTKOZVaYNes

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Rating 4.64
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Discussion

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it's a reverse challenge, and fun

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Regardless of whether this challenges about reverse engineering or exploit, i think xor must be important ;). IMHO RE and Exploit are an inseparable topic because to master binary exploitation, of course you have to master RE too

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Thanks for awesome challenge! Took me a long time and had to research a lot, but is worth the effort for people wanting to master binary. Anyone planning on solving binary or reversing problems cannot avoid learning about machine code instructions and registers, so you might as well start now if you already haven't.

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The only problem i had here was with endianess, but thats because of my intelligence. Good chal, ego boosted

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I think it's a reversing problem too

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That was a very fun challenge! Thank you! ^-^

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in my opinion, this problem should be at the reversing category

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