from pwn import xor, unhex
from pwnlib.util.fiddling import hexdump


def CDec(s):
    s = '0x' + s
    return int(s, 16)


def rigmarole(es) -> str:
    res = ''
    for i in range(0, len(es), 4):
        c = CDec(es[i:i+2])
        s = CDec(es[i+2:i+4])
        cc = c - s
        res += chr(cc)
    return res


def canoodle2(input, ardylo, s, bible):
    ll = 0
    ker = [b'\x00' for i in range(s)]
    for i in range(0, len(input), 4):
        t1 = unhex(input[i+ardylo:i+ardylo+2])
        t2 = bible[ll % len(bible)]
        ker[ll] = xor(t1, t2)
        ll += 1
        if ll == s:
            print(ll, s, len(ker))
            # print(ll, s)
            break
    return ker


def folderol():
    FL = '9655B040B64667238524D15D6201.B95D4E01C55CC562C7557405A532D768C55FA12DD074DC697A06E172992CAF3F8A5C7306B7476B38.C555AC40A7469C234424.853FA85C470699477D3851249A4B9C4E.A855AF40B84695239D24895D2101D05CCA62BE5578055232D568C05F902DDC74D2697406D7724C2CA83FCF5C2606B547A73898246B4BC14E941F9121D464D263B947EB77D36E7F1B8254.853FA85C470699477D3851249A4B9C4E.9A55B240B84692239624.CC55A940B44690238B24CA5D7501CF5C9C62B15561056032C468D15F9C2DE374DD696206B572752C8C3FB25C3806.A8558540924668236724B15D2101AA5CC362C2556A055232AE68B15F7C2DC17489695D06DB729A2C723F8E5C65069747AA389324AE4BB34E921F9421.CB55A240B5469B23.AC559340A94695238D24CD5D75018A5CB062BA557905A932D768D15F982D.D074B6696F06D5729E2CAE3FCF5C7506AD47AC388024C14B7C4E8F1F8F21CB64'

    onzo = FL.split('.')
    for i in range(len(onzo)):
        temp = rigmarole(onzo[i])
        print(f't: {temp} {i}')

    FT = open('blob', 'r').read()
    key = [0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
           0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE]

    # Fake Flag, this is MP3 file
    wabbit = canoodle(FT, 168667, key)

    flag_png = canoodle2(FT, 2, len(FT)//2, 'FLARE-ON'[::-1])

    return flag_png


flag = folderol()
print(hexdump(flag[:0x200]))

with open('flag.png', 'wb') as f:
    tmp = b''.join(flag)
    print(hexdump(tmp[:100]))
    f.write(tmp)