Quick glance at ELF sections during a pwn debug session

sections.txt

[*] ELF sections summary:
    +-------+--------------------+----------+-------+-------+-----------------+ 
    | index |               name |    vaddr |  size | perms |      type       | 
    +-------+--------------------+----------+-------+-------+-----------------+ 
    | 0x0   |                    | 0x0      | 0x0   |  ---  |    SHT_NULL     | 
    | 0x1   | .interp            | 0x400238 | 0x1c  |  r--  |  SHT_PROGBITS   | 
    | 0x2   | .note.ABI-tag      | 0x400254 | 0x20  |  r--  |    SHT_NOTE     | 
    | 0x3   | .note.gnu.build-id | 0x400274 | 0x24  |  r--  |    SHT_NOTE     | 
    | 0x4   | .gnu.hash          | 0x400298 | 0x38  |  r--  |  SHT_GNU_HASH   | 
    | 0x5   | .dynsym            | 0x4002d0 | 0xf0  |  r--  |   SHT_DYNSYM    | 
    | 0x6   | .dynstr            | 0x4003c0 | 0x7c  |  r--  |   SHT_STRTAB    | 
    | 0x7   | .gnu.version       | 0x40043c | 0x14  |  r--  | SHT_GNU_versym  | 
    | 0x8   | .gnu.version_r     | 0x400450 | 0x20  |  r--  | SHT_GNU_verneed | 
    | 0x9   | .rela.dyn          | 0x400470 | 0x30  |  r--  |    SHT_RELA     |                      
    | 0xa   | .rela.plt          | 0x4004a0 | 0x30  |  r--  |    SHT_RELA     | 
    | 0xb   | .init              | 0x4004d0 | 0x17  |  r-x  |  SHT_PROGBITS   | 
    | 0xc   | .plt               | 0x4004f0 | 0x30  |  r-x  |  SHT_PROGBITS   | 
    | 0xd   | .text              | 0x400520 | 0x182 |  r-x  |  SHT_PROGBITS   | 
    | 0xe   | .fini              | 0x4006a4 | 0x9   |  r-x  |  SHT_PROGBITS   | 
    | 0xf   | .rodata            | 0x4006b0 | 0x10  |  r--  |  SHT_PROGBITS   | 
    | 0x10  | .eh_frame_hdr      | 0x4006c0 | 0x44  |  r--  |  SHT_PROGBITS   | 
    | 0x11  | .eh_frame          | 0x400708 | 0x120 |  r--  |  SHT_PROGBITS   | 
    | 0x12  | .init_array        | 0x600df0 | 0x8   |  rw-  | SHT_INIT_ARRAY  | 
    | 0x13  | .fini_array        | 0x600df8 | 0x8   |  rw-  | SHT_FINI_ARRAY  | 
    | 0x14  | .dynamic           | 0x600e00 | 0x1f0 |  rw-  |   SHT_DYNAMIC   | 
    | 0x15  | .got               | 0x600ff0 | 0x10  |  rw-  |  SHT_PROGBITS   | 
    | 0x16  | .got.plt           | 0x601000 | 0x28  |  rw-  |  SHT_PROGBITS   | 
    | 0x17  | .data              | 0x601028 | 0x10  |  rw-  |  SHT_PROGBITS   | 
    | 0x18  | .bss               | 0x601038 | 0x8   |  rw-  |   SHT_NOBITS    | 
    | 0x19  | .comment           | 0x0      | 0x29  |  ---  |  SHT_PROGBITS   | 
    | 0x1a  | .symtab            | 0x0      | 0x618 |  ---  |   SHT_SYMTAB    | 
    | 0x1b  | .strtab            | 0x0      | 0x1f6 |  ---  |   SHT_STRTAB    | 
    | 0x1c  | .shstrtab          | 0x0      | 0x103 |  ---  |   SHT_STRTAB    | 
    +-------+--------------------+----------+-------+-------+-----------------+

show_sections.py

from pwn import *
from tabulate import tabulate

def show_sections(elf):
    header = ["index", "name", "vaddr", "size", "perms", "type"]
    table = []
    for index, section in enumerate(elf.sections):
        perms = ["-", "-", "-"]  # rwx
        if section.header.sh_flags & 0x2:
            perms[0] = "r"
        if section.header.sh_flags & 0x4:
            perms[2] = "x"
        if section.header.sh_flags & 0x1:
            perms[1] = "w"

        table.append(
            [
                hex(index),
                section.name,
                hex(section.header.sh_addr),
                hex(section.header.sh_size),
                "".join(perms),
                section.header.sh_type,
            ]
        )

    info("ELF sections summary:\n%s", tabulate(table, headers=header, tablefmt="pretty", colalign="left"))