Rabin2 resize section / change section permissions not working

[mehdithreem]

Hello

I want to extend the .text section of an ELF file in order to add some functionality to it. When I run rabin2 -O r/.text/2048 a.out, it does not print any error, but the .text section size remains the same.

In addition, running rabin2 -O p/.data/rwx a.out or rabin2 -O e/0x8038000 a.out results in segmentation fault. It seems rabin patching functionalities does not work at all.

I have tested on both MacOS 10.15.1 and Ubuntu 18.04 environments. My targets were /bin/ls and a small gcc compiled program.

This is the output of rabin2 -O r/.text/2048 a.out:

delta: 2024
-> elf section ()
-> elf section (.interp)
-> elf section (.note.ABI-tag)
-> elf section (.note.gnu.build-id)
-> elf section (.gnu.hash)
-> elf section (.dynsym)
-> elf section (.dynstr)
-> elf section (.gnu.version)
-> elf section (.gnu.version_r)
-> elf section (.rela.dyn)
-> elf section (.rela.plt)
-> elf section (.init)
-> elf section (.plt)
-> elf section (.plt.got)
-> elf section (.text)
-> elf section (.fini)
-> elf section (.rodata)
-> elf section (.eh_frame_hdr)
-> elf section (.eh_frame)
-> elf section (.init_array)
-> elf section (.fini_array)
-> elf section (.jcr)
-> elf section (.dynamic)
-> elf section (.got)
-> elf section (.got.plt)
-> elf section (.data)
-> elf section (.bss)
-> elf section (.comment)
-> elf section (.shstrtab)
-> elf section (.symtab)
-> elf section (.strtab)
-> program header (0x00000040)
-> program header (0x00000238)
-> program header (0x00000000)
-> program header (0x00000e10)
-> program header (0x00000e28)
-> program header (0x00000254)
-> program header (0x000006e8)
-> program header (0x00000000)
-> program header (0x00000e10)
COPY FROM 0x00001050
COPY TO 0x00001838
Shifted 2024 byte(s)

Sorry for asking my question here, I googled a lot but didn't found any solution.

[phra]

any update on this? i have the same problem with 4.2.0.

[radare]

Nope. Nobody touched that code at all

…

On 20 Jan 2020, at 12:39, Francesco Soncina ***@***.***> wrote:  any update on this? i have the same problem. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[hitzhangjie]

I came across the same problem.