darkCON CTF 2021 - fire in the androiddd [ RE ]

solver_fire.py

def looper(n): 
    if (n == 0 or n == 1): 
        return 1
  
    v2 = [0 for i in range(n + 1)] 
  
    v2[0] = 1
    v2[1] = 1
  
    for i in range(2, n + 1): 
        v2[i] = 0
        for j in range(i): 
            v2[i] = v2[i] + v2[j] * v2[i-j-1] 
    return v2[n]%2**32

enc = [101,96,112,110,77,101,202,470,1506,4758,16815,58877,208123,742855,2674489,9694735,35357570,129644713,477638735,1767263206,2269153033,2991430638,1288250377,3757197244,1413958429,43422424,2072914473,2325361044,2600037558,3008195127,3276256895,4169229947,300814809,3929270464,2526730686,2527522239,645964816,1351610749,573153031,1347646066,1945953402,3824419424,480774039,2833665279,2366904092,2809807660,3295802436,3644429150,720643560,906311378,992169127,1211139059,1465960990,4269303883,3179939394,4095898594,580984841,3596758568,1063564231,3288906933]

flag = ""
for i, j in enumerate(enc):
    flag+=chr(j ^ looper(i))

print(flag)