% reversing, reverse-engineering, ghidra, radare2, gdb, binary

# Ghidra - start GUI
ghidraRun

# Ghidra - analyze headless
analyzeHeadless <project_dir> <project_name> -import <binary> -postScript <script>

# radare2 - open binary
r2 <binary>

# radare2 - analyze all
r2 -A <binary>

# radare2 - analyze and open
r2 -AA <binary>

# r2 commands (inside r2):
# aaa     - analyze all
# afl     - list functions
# pdf     - print disassembly of function
# s main  - seek to main
# VV      - visual graph mode
# px 100  - print hex
# iz      - list strings in data section
# ii      - list imports
# ie      - list entry points

# radare2 - list functions
r2 -qc 'aaa; afl' <binary>

# radare2 - list strings
r2 -qc 'iz' <binary>

# radare2 - disassemble main
r2 -qc 'aaa; s main; pdf' <binary>

# GDB - start debugging
gdb <binary>

# GDB - run with args
gdb --args <binary> <arg1> <arg2>

# GDB commands:
# r           - run
# b main      - breakpoint at main
# b *0x401000 - breakpoint at address
# c           - continue
# n           - next (step over)
# s           - step (step into)
# p $eax      - print register
# x/10x $esp  - examine memory
# info reg    - show registers
# disas       - disassemble current function
# bt          - backtrace
# q           - quit

# GDB with pwndbg/gef (enhanced)
gdb -q <binary>

# objdump - disassemble
objdump -d <binary>

# objdump - all headers
objdump -x <binary>

# objdump - disassemble with source
objdump -S <binary>

# readelf - file header
readelf -h <binary>

# readelf - sections
readelf -S <binary>

# readelf - symbols
readelf -s <binary>

# readelf - program headers
readelf -l <binary>

# nm - list symbols
nm <binary>

# nm - dynamic symbols
nm -D <binary>

# strings - extract strings
strings <binary>
strings -n 10 <binary>

# file - identify binary type
file <binary>

# ldd - list shared libraries
ldd <binary>

# strace - trace syscalls
strace <binary>
strace -f <binary>

# ltrace - trace library calls
ltrace <binary>

# Cutter - r2 GUI
cutter <binary>

# Binary Ninja (commercial)
binaryninja <binary>

# IDA Free
ida64 <binary>

# checksec - binary protections
checksec --file=<binary>

# ROPgadget - find gadgets
ROPgadget --binary <binary>

# pwntools (Python)
# from pwn import *
# elf = ELF('<binary>')

$ binary: find . -type f -executable 2>/dev/null | head -10
$ project_dir: echo "/tmp/ghidra_projects"
$ project_name: echo "analysis"
$ script: echo ""