flareon4 lvl2

IgniteMe.py

import string

enc = """0d 26 49 45 2a 17 78 44 2b 6c 5d 5e 45 12 2f 17 2b 44 6f 6e 56 09 5f 45 47 73 26 0a 0d 13 17 48 42 01 40 4d 0c 02 69 00""".replace(" ", "").decode("hex")

def t(pos, prefix, xor_key):
    print("pos=%d , prefix='%s' key=%d" % (pos, prefix, k))
    for c in range(256):
        t = chr(c ^ xor_key)
        if t == enc[pos]:
            # print("Found pos=%d -> '%c'" % (pos, chr(i)))
            return chr(c)
    return None

valid = [ None for x in range(len(enc))]

for i in range(len(enc)-1, -1, -1):
    k = 4 if i==len(enc)-1 else ord(valid[i+1])
    c = t(i, valid, k)
    if c:
        valid[i] = c
    else:
        raise Exception("error")

print
print "result", ''.join(valid)