Common commands
Breakpoints
Catching events
Running/Killing app
Logging
Breakpoint on syscall return value
# Breakpoint by symbol name
br ioctl
# Breakpoint on ARM by symbol name and first argument == DMA_HEAP_IOCTL_ALLOC
br ioctl
condition <breakpoint-num> $x1 == 3222816768
# Disabling breakpoint
disable breakpoint <num> [once] [range]
# Enabling breakpoint
enable breakpoint <num> [once] [range]
# Writing breakpoint backtraces and continuing
define continue-hook
silent
bt
continue
end
catch trow
catch exec
catch fork
catch vfork
catch load
catch unload# Run binary
run -- args...
# Kill binary
kill # Log gdb output also to mylog.txt file
set logging file mylog.txt
set logging onFor ARM64
set $outside = 1
catch syscall dup
commands
silent
set $outside = ! $outside
if ( ! $outside && $x0 == 83 )
info registers
bt
end
continue
end
Remote Debug
On machine serving port
gdbserver --attach 0.0.0.0:4444 2312450To attach
gdb program
(gdb) target remote targethost:4444