Took the byte

I’ve done that strange challenge. Any byte was taken… Its more crypto than forensics. After small hint i do this manually in simple python oneliner.
If you wanna help - just PM me :wink:

Type your comment> @Wolfstorm said:

@YanTayga said:

@mm0086444 said:
@chivato said:

classic forensic tool
Men, what are you talking about? Please PM me the name of that magic tool :slight_smile:

You mean you don’t know what tool that is :open_mouth:

can i know that secret tool name.

Type your comment> @foxieon said:

Type your comment> @Wolfstorm said:

@YanTayga said:

@mm0086444 said:
@chivato said:

classic forensic tool
Men, what are you talking about? Please PM me the name of that magic tool :slight_smile:

You mean you don’t know what tool that is :open_mouth:

can i know that secret tool name.

If I tell you the Chef won’t be happy with me…

Hmm, I’ve asked the chef and can’t get anything out of this. I’ve not used it before today however so total n00b. Any chance of a hint please?

@thegoatreich:

I think the comment of @will135 is the best hint you can get without it being a spoiler:

[…] think of the operation that could make the most common byte be that byte in the file rather than the regular most common byte in many files.

Also, since the challenge hints at a single byte as the difference-maker, brute-forcing the few possibilities should also be reasonably fast.

OK, I need to do some reading here.

Edit: got it. Thanks

Can someone throw a bone my way? I’ve opened it with chef and with a hex editor but not sure what byte is missing…

Solved it by treating each bit as a coin. But can’t see where the ‘single byte’ clue comes in handy. I added nothing to the original file. All the required data is in the original.

I actually don’t get it why people have the interest to solve such a challenge using a magic tool; as soon as one gets a clue and then trying to script or program the solution it is quite simple… the hint with the coin is quite good.

Hey, anyone for a nudge, please ?I think I am quite close now.
Thanks

NVM, got it

Thank you guys for the subtle hints! With the right tool this was quite quick to resolve.
But doing it with custom code/script should not be that hard too…

If you are stuck, go through the comments again. There are only 2 pages and there is more than you need to get this done. :slight_smile:

after finally discovering that tool, I solved it pretty fast :slight_smile: That magic will come in handy in the future :smiley:

[…] think of the operation that could make the most common byte be that byte in the file rather than the regular most common byte in many files.

This hint helped me to solve this challenge. :slight_smile:

A bit silly, but ok :slight_smile:

Spoiler Removed

Haha same it’s cool

Honestly I don’t understand how lot of people rated easy this.
True that you need few secs to found the flag…
But I expected some forensic stuffs here and honestly without the hints here I think I would have wasted a lot of time.
Thanks guys… Added chef in the favorites.

I am sure like many others, I had the answer in front of me for a long time, but I was held up by way too much overthinking. Don’t start manipulating the data byte by byte and get frustrated at what seems to be gibberish. Finish the “step” completely then look at what you have. Everything should make sense after that.

This challenge doesn’t make sense to me. I did the first step, which shows a clue on your screen, ok, something appears… so what ? It’s way too CTF-ey to make any sense… (meaning this does not relate to any forensics scenario at all).

I really don’t understand the title, when it’s actually not needed at all? Soo confused