Questions tagged [elf]
the Executable and Linkable Format is the main executable and object format for Linux, Solaris, *BSD, and many other OSes...
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questions with no upvoted or accepted answers
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views
Modern equivalent to rsymtab for reconstructing symbol table for statically linked / stripped binaries?
I'm working with a 32-bit ELF binary that (I believe) has been statically linked against a few different third-party libraries. It has also been stripped, so I don't have much to go on with respect to ...
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2
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Please help with striped binary reverse
Not so long ago I was engaged in reverse and pwn, I came across such a task
This is a normal task with a vulnerability on the heap, but it is striped and I don’t understand where which functions are
I ...
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2
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Does AnyOne knows how to reverse python file that is encoded into elf binary .cpython-310.so extension? Please Help me Out
Following is the link to the file that I want to reverse. This is the python file that is encoded in cpython or cython and it is now a binary file.
Please help me to decode it as it is very important ...
2
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111
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Merge HEX file into existing ELF file in ghidra
I have an Infineon Tricore ELF file. I have a HEX file that has been patched with minor changes and new code appended (e.g. the hex from the ELF was exported and then had changes made to it manually ...
- 263
2
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Wrong EP on an .elf CrackMe
I am trying to solve an elf CrackMe. I opened it with IDA Pro and I saw start function is on address 0x1E8. I opened the elf with HxD and I saw entry point is 0x1E9 (and no results on file for 01E8)......
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2
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185
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How do relocations work for imported functions in SH4 ELF?
I build very simple hello world code with sh4 gcc compiler as shared library:
#include <stdio.h>
void hello()
{
printf("Hello world!\n");
}
But when I load .so file into the ...
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2
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0
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672
views
Tool/parser for symbol tables produced with objdump -t to be used with IDA / Ghidra?
Working with a binary (arm64) file that seems to be some sort of a broken ELF file. The header data is missing and for some reason it contains a symbol table in a format that to me seem to be equal to ...
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2
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0
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408
views
Shellcode execution segfault
I have been trying to exploit simple buffer overflow caused by scanf. I'm working on x86 Linux. The point is to spawn a shell. I sucesfully overwritten return address and jumped into my shellcode. But ...
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2
votes
0
answers
2k
views
Debugging a position independent executable ELF
I am trying to follow the write-up about hackercalc (a challenge for DEFCON 2015 quals). First, by loading the challenge into gdb, I observe that:
(gdb) info files
...
Entry point: 0xcf8
...
So I ...
- 1,410
2
votes
0
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612
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Trying to run MIPS ELF with a cross toolchain but sigbus error
I finally successfuly installed a cross toolchain from this site in order to run and debug a mips elf on my x86-64 . I only have the elf file. I can disassemble it but when i try to run it with :
...
- 485
2
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555
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Patch ELF (arm): remove constructor segment
I got an ELF shared library with a constructor function that is executed every time the library is loaded:
.init_array:00005E5C ; =====================================================================
...
- 191
2
votes
1
answer
670
views
Debugging Binary using Far Ret to switch Code Segment
It appears that GDB is unable to handle binaries which switch code segments.
Using pwntools*, it's trivial to generate a 32-bit intel binary which uses retf to switch to the 64-bit code segment. ...
- 2,357
1
vote
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41
views
Is there a way to sync symbol labels in Ghidra Disassembler with its Decompiler?
I swear that in IDA Pro, when I renamed a stack var in the disassembler, that name would port over to the decompiled view, but this doesn't seem to occur in Ghidra. In fact, in Ghidra, when I try to ...
- 1,880
1
vote
1
answer
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Inject ELF with an entierly self-contained code section that can statically call standard library functions
What I want to do
What I want to do is inject an existing ELF binary with additional code that runs before the original .text section and then transfers control back to it.
What I can already do
Now, ...
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1
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0
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Default linker files and sections: Explain thier origin/history and thier purpose
I have a Linux Ubuntu(20.04) machine with gcc and clang installed. I figured out the directory containing the default linker script:
/usr/lib/x86_64-linux-gnu/ldscripts$ ls
elf32_x86_64.x ...
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