The Official Radare2 Book

IOLI 0x08

we can reverse it and find it's similar to 0x07, and use the same password to solve it:

$ export LOLAA=help

$ ./cracke0x08

IOLI Crackme Level 0x08

Password: 12346

Password OK!

dustri provided a better way to check crackme0x08. 0x07 is the stripped version of 0x08.

$ radiff2 -A -C ./crackme0x07 ./crackme0x08

...

fcn.08048360  23 0x8048360 |   MATCH  (1.000000) | 0x8048360   23 sym._init

sym.imp.__libc_start_main   6 0x8048388 |   MATCH  (1.000000) | 0x8048388    6 sym.imp.__libc_start_main

sym.imp.scanf   6 0x8048398 |   MATCH  (1.000000) | 0x8048398    6 sym.imp.scanf

sym.imp.strlen   6 0x80483a8 |   MATCH  (1.000000) | 0x80483a8    6 sym.imp.strlen

sym.imp.printf   6 0x80483b8 |   MATCH  (1.000000) | 0x80483b8    6 sym.imp.printf

sym.imp.sscanf   6 0x80483c8 |   MATCH  (1.000000) | 0x80483c8    6 sym.imp.sscanf

sym.imp.strncmp   6 0x80483d8 |   MATCH  (1.000000) | 0x80483d8    6 sym.imp.strncmp

sym.imp.exit   6 0x80483e8 |   MATCH  (1.000000) | 0x80483e8    6 sym.imp.exit

entry0  33 0x8048400 |   MATCH  (1.000000) | 0x8048400   33 entry0

fcn.08048424  33 0x8048424 |   MATCH  (1.000000) | 0x8048424   33 fcn.08048424

fcn.08048450  47 0x8048450 |   MATCH  (1.000000) | 0x8048450   47 sym.__do_global_dtors_aux

fcn.08048480  50 0x8048480 |   MATCH  (1.000000) | 0x8048480   50 sym.frame_dummy

fcn.080484b4 112 0x80484b4 |   MATCH  (1.000000) | 0x80484b4  112 sym.dummy

fcn.08048524  30 0x8048524 |   MATCH  (1.000000) | 0x8048524   30 sym.che

fcn.08048542 119 0x8048542 |   MATCH  (1.000000) | 0x8048542  119 sym.parell

fcn.080485b9 118 0x80485b9 |   MATCH  (1.000000) | 0x80485b9  118 sym.check

main  92 0x804867d |   MATCH  (1.000000) | 0x804867d   92 main

fcn.08048755   4 0x8048755 |   MATCH  (1.000000) | 0x8048755    4 sym.__i686.get_pc_thunk.bx

fcn.08048760  35 0x8048760 |   MATCH  (1.000000) | 0x8048760   35 sym.__do_global_ctors_aux

fcn.0804878d  17 0x804878d |     NEW  (0.000000)

sym.__libc_csu_init  99 0x80486e0 |     NEW  (0.000000)

sym.__libc_csu_fini   5 0x8048750 |     NEW  (0.000000)

sym._fini  26 0x8048784 |     NEW  (0.000000)