# EHAX CTF 2025
## MBR Shenanigans
use QEMU for debugging

qemu-system-x86_64 -drive "file=file,format=raw,if=floppy" -boot a -m 1024 -gdb tcp::1234 -S

Use gdb to remote

[...]
pwndbg> target remote :1234
Remote debugging using :1234
[...]
pwndbg> c
Continuing.

Characters move from right to left -> `bx=0xcafe`

pwndbg> c
Continuing.
^C
Program received signal SIGINT, Interrupt.
[...]
pwndbg> set $bx=0xcafe
pwndbg> c
Continuing.

`Flag: EH4X{b00t2boop}`