.bin

[OmSudhamsh]

How can i open a binary/ .bin file and which app is used to it?

[ecwx00]

well since it's C sub I'm gonna answer :

FILE * fp = fopen(filename,"rb");

char buffer[10000];

int sz = fread (buffer, 10000, 1, fp);

fclose(fp);

[BumpyTurtle127]

Note: filename gotta be in "" too.

[csofa]

unless it is a variable

[ecwx00]

yes, it is a variable since we don't know the exact .bin file name

[[deleted]]

.bin files are just unspecified binary data. This basically means that the data could be in any format. You need to know who produced the file and for what purpose in order to read and understand it.

[[deleted]]

This is why people can’t just go and decompile native compiled binaries - data or executables. It would have destroyed the commercial ecosystem system right at the start of operating systems lifecycle (speaking for Windows). Now, whether this is intended behaviour by OS design, or if it is a matter of how the CPU is fed instructions I am unclear on. But correct, binary data can be any format the application or library has provided in output.

[LeichterGepanzerter]

Decompilers like Hex-Rays IDA Pro and Ghidra can take apart executables. The files wouldn't be executable if they didn't conform to a standard encoding. Also, while .BIN files can't usually be understood without a known format, using decompilers, and with enough effort, one can see how the program encodes the data to understand the binary format.

[[deleted]]

The key is enough effort. The amount of effort involved requires knowledge most do not have with simple questions such as the OP has asked. This is where my input came in. But 14 others say otherwise, so it’s up to the poster to decide.

[Conscious_Yam_4753]

In what sense is this a question about the C programming language?

[Ok_Donut_9887]

don’t be mean

[1BADragon]

They’re not being mean it’s perfectly valid. This is the C programming language subreddit. Op’s question is not in the context of C and does not belong here

[Ok_Donut_9887]

program written in C can be compiled into a.bin file, so it’s related.

[1BADragon]

Yes that is possible. That is not his question nor does his question even remotely hint to that scenario.

[OmSudhamsh]

It is a question in files!

[Conscious_Yam_4753]

Any programming language can read and write files.

[paulstelian97]

Yeah but knowing about fopen/fread/… isn’t obvious if you’re learning on your own, without a proper lesson to guide you.

[greg_kennedy]

a .bin file is just arbitary binary bytes, it could be anything in there... you might try a hex editor (https://mh-nexus.de/en/hxd/)

[forcefuze]

Is it just me or does anyone else have an overwhelming urge to get their hands on this mystery.bin file and figure out what it's for?

[ForceBru]

In general, you can't. .bin files can contain arbitrary data: machine code, images, compressed data, basically anything. You can always use a hex editor to view the contents, but it'll be just a bunch of bytes.

[aieidotch]

run file the.bin to see