function::sprint_usyms - Linux

Overview

function::sprint_usyms is a command-line tool used to generate usable symbols from function names. It is useful in debugging and reverse engineering binaries by extracting function names and addresses from executables and libraries.

Syntax

function::sprint_usyms [OPTIONS] [<binary/library>]

Options/Flags

• -a, –all: Extract all symbols, including non-functions.
• -n, –names: Output only function names.
• -p, –print: Print all attributes for each symbol.
• -v, –verbose: Enable verbose output.
• -h, –help: Print usage information.

Examples

Extract function names from a binary:

function::sprint_usyms /bin/ls

Extract all symbols from a library:

function::sprint_usyms -a /usr/lib/libfoo.so

Print only function names:

function::sprint_usyms -n /usr/bin/python

Common Issues

• Missing symbols: Ensure that the binary or library has debug symbols stripped.
• Incorrect output: Verify that the executable or library is not corrupted.

Integration

function::sprint_usyms can be integrated with other tools for advanced analysis:

• Use objdump to disassemble functions:

objdump -d $(function::sprint_usyms -n /bin/ls)

• Use gdb to debug functions:

gdb $(function::sprint_usyms -n /bin/ls)

Related Commands

• readelf
• objdump
• gdb