function::set_user_string_n - Linux


set_user_string_n is a versatile utility that allows users to modify specific entries in the user string section of the ELF binary. This command is particularly useful for manipulating metadata and annotations within ELF executables.


set_user_string_n [options] <user_string> <offset>


| Option | Description | Default |
| -e, --elf-file | Path to the ELF executable | Required |
| -s, --section | Specifies the user string section | .user |
| -o, --offset | Byte offset within the section from the start | Required |
| -v, --verbose | Enables verbose output | False |


Update a User String:

set_user_string_n "New Value" 0x1000 /path/to/binary.elf

Add a New User String:

set_user_string_n "Additional Metadata" 0x2000 /path/to/binary.elf

Delete a User String:

set_user_string_n "" 0x1000 /path/to/binary.elf

Common Issues

  • Ensure that the ELF executable exists and is accessible.
  • Verify that the specified user string section is present in the ELF binary.
  • Double-check the offset value to ensure it corresponds to the intended user string.


set_user_string_n can be integrated with other tools such as:

  • ELF manipulation tools like readelf and objcopy for advanced analysis and modification.
  • Version control systems like Git for tracking changes to user strings.

Related Commands

  • readelf: Display ELF header and section information.
  • objcopy: Copy, modify, or translate ELF objects.
  • ELF Toolchain: Official documentation for ELF tools.