How to run debug with c

Question

Good day, i only have the file which is : sample_: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.2.5, not stripped

When i run it, it gives an segmentation fault. I tried the debugging with the gdb, but the result was : Reading symbols from sample_...(no debugging symbols found)...done.

Then i tried with the file command :

(gdb) file sample_ 
Reading symbols from sample_...(no debugging symbols found)...done.

I dont have the .c file itself.

How i can debug it?

I can not compile, i have just a file itself, no other .c files — Muhammed Samedzade, May 29 '20 at 12:25
Then it was not compiled with the `-g` flag on, there is little to do :( — David Ranieri, May 29 '20 at 12:25
Are there any other methods? I could dump it, but there are lots of assembly codes, which makes it hard to understand — Muhammed Samedzade, May 29 '20 at 12:26
If you don't have the source code for it you can only inspect the assembly code. Which, without debugging symbols, may turn out to be very hard to read — UnholySheep, May 29 '20 at 12:27
You can try with `valgrind`, maybe it gives you some information about the segfault. Anyway, if you can not recompile, why bother? — David Ranieri, May 29 '20 at 12:33
wow @DavidRanieri its 1st time i have ever heard this tool, and it worked. ==10951== Memcheck, a memory error detector. I just need to know as much as possible about this file , thats why i have to do it =) — Muhammed Samedzade, May 29 '20 at 12:39

score 0 · Answer 1 · answered May 29 '20 at 12:29

0

Seems like the program has not been build with debug flags. If you don't have the source to recompile it with debug flags there is as far as I know no way to properly debug it. You can try to decompile the executable but good luck with that

answered May 29 '20 at 12:29

sshmaxime

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How to run debug with c

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