Code samples
Bruteforce
My version of the solver for Unknown from TUCTF 2017 (this is just a placeholder for now)
```python
# -*- coding: utf-8 -*-
import r2pipe
import sys
additional_chars = ''
chrs = additional_chars + '{}_0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
flag = list('-' * 56)
addr = 0x401c82
r = r2pipe.open('/vagrant/tuctf/reversing/unknown', flags=['-2'])
r.cmd('aaa')
for x in range(0, len(flag)):
for i, c in enumerate(chrs):
flag[x] = c
r.cmd('doo %s' % ''.join(flag))
r.cmd('db %s' % addr)
r.cmd('%sdc' % str(x + 1))
eax = int(r.cmd('dr rax'), 16)
sys.stdout.write('\r' + ''.join(flag))
sys.stdout.flush()
if eax == 0:
break
```
Automation
-
Place holder