For the x86 version of the challenge, we can see that the program contains the following functions :
gef➤ info functions
All defined functions:
Non-debugging symbols:
0x08048374 _init
0x080483b0 read@plt
0x080483c0 printf@plt
0x080483d0 puts@plt
0x080483e0 system@plt
0x080483f0 __libc_start_main@plt
0x08048400 setvbuf@plt
0x08048410 memset@plt
0x08048420 __gmon_start__@plt
0x08048430 _start
0x08048470 _dl_relocate_static_pie
0x08048480 __x86.get_pc_thunk.bx
0x08048490 deregister_tm_clones
0x080484d0 register_tm_clones
0x08048510 __do_global_dtors_aux
0x08048540 frame_dummy
0x08048546 main
0x080485ad pwnme
0x0804862c ret2win
0x08048660 __libc_csu_init
0x080486c0 __libc_csu_fini
0x080486c4 _fini
We get a bunch of not-so-interesting functions, as well as a main, pwnme and ret2win function. They are used for the following :