benjamyn/CrabChampionsHacks
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moved struct.pack to struct.unpack

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This commit is contained in:
Benjamyn Love 2024-07-27 13:43:07 +10:00
parent f525568502
commit aa1a19d675
1 changed files with 19 additions and 10 deletions
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29
src/ccsaveparser.py
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@ -8,9 +8,10 @@ import struct
class OFFSETS:
VERSION = 0x42e
KEYS_LABEL = 0x12DB
KEYS_VALUE = 0x12F9
ACCOUNT_LEVEL = 0x12AD
KEYS_LABEL = 0x12DB # These are not static
KEYS_VALUE = 0x12F9 # These are not static
ACCOUNT_LEVEL = 0x12AD # These are not static
START_OF_OPTIONS = 0x42a # This appears to be static across multiple saves
def _bytes_to_string(bytes):
@ -36,8 +37,10 @@ def get_key_value(save):
def verify_save(save):
try:
struct.pack("bbbb", *save[:4]) == b"GVAS"
token = _bytes_to_string(read_token_at_offset(save, OFFSETS.VERSION))
struct.unpack("<sssss", save[:5]) == "GVAS"
size = read_int_at_offset(save, OFFSETS.START_OF_OPTIONS)
token = read_token_at_offset(save, OFFSETS.START_OF_OPTIONS + 4, size)
print(size)
if token == "CrabChampionsVersion":
return True
except struct.error as e:
@ -45,12 +48,18 @@ def verify_save(save):
return False
def read_int_at_offset(save, offset):
try:
data = struct.unpack("<i", save[offset:offset + 4])
return data[0]
except struct.error:
return False
def read_token_at_offset(save, offset, size=1):
try:
data = struct.pack("b" * size, *save[offset: offset + size])
if data[-1] != 0x00:
data = read_token_at_offset(save, offset, size + 1)
return data
data = struct.unpack("s" * size, save[offset: offset + size])
return "".join([c.decode() for c in data[:-1]])
except struct.error:
print("Failed to find NULL byte in token, probs not a token")
return None
@ -68,6 +77,6 @@ else:
# Should be fine to do shit here
# print(read_token_at_offset(save, 0x12DB)) # Keys
# print(read_token_at_offset(save, 0x12AD)) # AccountLevel
token = read_token_at_offset(save, OFFSETS.KEYS_LABEL)
token = read_token_at_offset(save, OFFSETS.KEYS_LABEL, 5)
# print(_bytes_to_string(token))
print(f"You have {int.from_bytes(get_key_value(save))} keys")