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rr_decode.py
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rr_decode.py
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import sys
def decode_b0747746(enc_data):
print('[!] Type [b0747746] is detected!')
print('[+] Decoding...')
dec_data = []
xor_key = 1219836524
for i in range(len(enc_data)):
for _ in range(7):
x0 = (xor_key & 0x20000000) == 0x20000000
x1 = (xor_key & 8) == 8
x2 = xor_key & 1
x3 = 1 + (x0 ^ x1 ^ x2)
xor_key = ((xor_key + xor_key) + x3) & 0xFFFFFFFF
dec_data.append(int.from_bytes(enc_data[i], "little") ^ (xor_key % 256))
return dec_data
def decode_b25a6f00(enc_data):
print('[!] Type [b25a6f00] is detected!')
print('[+] Decoding...')
dec_data = []
for i in range(len(enc_data)):
if i % 2 == 0:
dec_data.append(int.from_bytes(enc_data[i], "little") ^ 0xff)
else:
dec_data.append(int.from_bytes(enc_data[i], "little"))
return dec_data
def decode_b2a66dff(enc_data):
print('[!] Type [b2a66dff] is detected!')
print('[+] Decoding...')
dec_data = []
for i in range(len(enc_data)):
dec_data.append(int.from_bytes(enc_data[i], "little") ^ 0xfc)
dec_data[0] = 0x4d
dec_data[2] = 0x90
return dec_data
def decode_f2a32072(enc_data):
print('[!] Type [f2a32072] is detected!')
print('[+] Decoding...')
dec_data = []
xor_key = 2079624803
for i in range(len(enc_data)):
for _ in range(7):
x0 = (xor_key & 0x40000000) == 0x40000000
x1 = (xor_key & 8) == 8
x2 = xor_key & 1
x3 = x0 ^ x1 ^ x2
xor_key = ((xor_key + xor_key) + x3) & 0xFFFFFFFF
dec_data.append(int.from_bytes(enc_data[i], "little") ^ (xor_key % 256))
return dec_data
def decode_b2a46eff(enc_data):
print('[!] Type [b2a46eff] is detected!')
print('[+] Decoding...')
dec_data = []
for i in range(len(enc_data)):
dec_data.append(int.from_bytes(enc_data[i], "little") ^ 0xff)
dec_data[1] = 0x5a
dec_data[2] = 0x90
return dec_data
def decode_a9a46efe(enc_data):
print('[!] Type [a9a46efe] is detected!')
print('[+] Decoding...')
dec_data = []
for i in range(len(enc_data)):
dec_data.append(((int.from_bytes(enc_data[i], "little") ^ 0x7b) + 0x7b) % 256)
return dec_data
def decode_945fdad8(enc_data):
print('[!] Type [945fdad8] is detected!')
print('[+] Decoding...')
dec_data = []
xor_key = 1387678300
for i in range(len(enc_data)):
for _ in range(7):
x0 = (xor_key & 0x20000000) == 0x20000000
x1 = (xor_key & 8) == 8
x2 = xor_key & 1
x3 = 1 + (x0 ^ x1 ^ x2)
xor_key = ((xor_key + xor_key) + x3) & 0xFFFFFFFF
dec_data.append(int.from_bytes(enc_data[i], "little") ^ (xor_key % 256))
return dec_data
def decode_95a2748e(enc_data):
print('[!] Type [95a2748e] is detected!')
print('[+] Decoding...')
dec_data = []
xor_key = 1404390492
for i in range(len(enc_data)):
for _ in range(7):
x0 = (xor_key & 0x20000000) == 0x20000000
x1 = (xor_key & 8) == 8
x2 = xor_key & 1
x3 = 1 + (x0 ^ x1 ^ x2)
xor_key = ((xor_key + xor_key) + x3) & 0xFFFFFFFF
dec_data.append(int.from_bytes(enc_data[i], "little") ^ (xor_key % 256))
return dec_data
def rc4_ksa(key):
x = 0
y = 0
s = list(range(256))
for i in range(0x100):
y = (key[x % len(key)] + s[i] + y) & 0xff
s[i], s[y] = s[y], s[i]
x += 1
return s
def rc4_prga(enc_data, s):
x = 0
y = 0
for i in range(len(enc_data)):
x = (x + 1) & 0xff
y = (s[x] + y) & 0xff
s[x], s[y] = s[y], s[x]
enc_data[i] = int.from_bytes(enc_data[i], "little") ^ s[(s[x] + s[y]) & 0xff]
return bytes(enc_data)
def decode_4da2ee67(enc_data):
print('[!] Type [4da2ee67] is detected!')
print('[+] Decoding...')
key = bytearray(b"123456")
s = rc4_ksa(key)
dec_data = rc4_prga(enc_data, s)
return dec_data
def decode_8291706f(enc_data):
print('[!] Type [8291706f] is detected!')
print('[+] Decoding...')
key = bytearray(b"2YlK77")
s = rc4_ksa(key)
dec_data = rc4_prga(enc_data, s)
return dec_data
def decode_614a860c(enc_data):
print('[!] Type [614a860c] is detected!')
print('[+] Decoding...')
key = bytearray(b"923hrg")
s = rc4_ksa(key)
dec_data = rc4_prga(enc_data, s)
return dec_data
def decode_0f7850ba(enc_data):
print('[!] Type [614a860c] is detected!')
print('[+] Decoding...')
key = bytearray(b"c34H4y")
s = rc4_ksa(key)
dec_data = rc4_prga(enc_data, s)
return dec_data
def decode_8291986f(enc_data):
print('[!] Type [8291986f] is detected!')
print('[+] Decoding...')
key = bytearray(b"2YlK77")
s = rc4_ksa(key)
dec_data = rc4_prga(enc_data, s)
return dec_data
def main():
args = sys.argv
if len(args) != 3:
print('[!] Usage: "' + args[0] + ' [Input] [Output]"')
sys.exit(-1)
signature = [
[0xb0, 0x74, 0x77, 0x46],
[0xb2, 0x5a, 0x6f, 0x00],
[0xb2, 0xa6, 0x6d, 0xff],
[0xf2, 0xa3, 0x20, 0x72],
[0xb2, 0xa4, 0x6e, 0xff],
[0xa9, 0xa4, 0x6e, 0xfe],
[0x94, 0x5f, 0xda, 0xd8],
[0x95, 0xa2, 0x74, 0x8e],
[0x4d, 0xa2, 0xee, 0x67],
[0x82, 0x91, 0x70, 0x6f],
[0x61, 0x4a, 0x86, 0x0c],
[0x0f, 0x78, 0x50, 0xba],
[0x82, 0x91, 0x98, 0x6f]
]
enc_data = []
with open(args[1], 'rb') as f:
while True:
byte = f.read(1)
if byte:
enc_data.append(byte)
else:
break
header = enc_data[:4]
for i in range(4):
header[i] = int.from_bytes(header[i], 'little')
if header == signature[0]:
dec_data = decode_b0747746(enc_data)
elif header == signature[1]:
dec_data = decode_b25a6f00(enc_data)
elif header == signature[2]:
dec_data = decode_b2a66dff(enc_data)
elif header == signature[3]:
dec_data = decode_f2a32072(enc_data)
elif header == signature[4]:
dec_data = decode_b2a46eff(enc_data)
elif header == signature[5]:
dec_data = decode_a9a46efe(enc_data)
elif header == signature[6]:
dec_data = decode_945fdad8(enc_data)
elif header == signature[7]:
dec_data = decode_95a2748e(enc_data)
elif header == signature[8]:
dec_data = decode_4da2ee67(enc_data)
elif header == signature[9]:
dec_data = decode_8291706f(enc_data)
elif header == signature[10]:
dec_data = decode_614a860c(enc_data)
elif header == signature[11]:
dec_data = decode_0f7850ba(enc_data)
elif header == signature[12]:
dec_data = decode_8291986f(enc_data)
else:
print('[!] Error: Unknown Format')
sys.exit(-1)
print('[!] Complete!')
with open(args[2], 'wb') as f:
f.write(bytearray(dec_data))
if __name__ == '__main__':
main()