install pwndbg

git clone https://github.com/pwndbg/pwndbg
cd pwndbg
./setup.sh

x - examine

x/<n><u><f> <address>

u - unit size (b: 1 byte, h: 2 bytes, w: 4 bytes, g: 8 bytes)

f - format (d: decimal (signed), u: decimal (unsigned), x: hex, s: string, i: instructions, a: address)

n - number of elements

commands list

disas/disass/disassemble, also use set disassembly-flavor intel beforehand

attach <PID> - attach to some already running program

core <PATH> - analyse the coredump of some program that’s finished running

c/continue

n/next - one source line, but stepping over function calls

ni/nexti - one assembly intsruction, but stepping over function calls

s/step - one source line, but stepping into function calls

si/stepi - one assembly intsruction, but stepping into function calls

b/break, view with info breakpoints, delete with del break <i>

r/run

start - sets breakpoint at main, then runs it

starti - sets breakpoint at _start (assembly), then runs it

info <registers/breakpoints/functions/many more...>, just run info with no arguments to see all possible subcommands

f/frame

p/print

display - displays something automatically everytime it stops https://sourceware.org/gdb/current/onlinedocs/gdb#Auto-Display

set - you can create your own variables set $my_var = ..., or you can also used it to change registers/memory values set $rax = 0 set *0x55555555511d=0

call

jump

finish - runs until the current function returns