GTA San Andreas Save File Edit using python

gtasa_save_edit.py

import struct

# Loads the save file having name `gtasasf1.b`.
with open("gtasasf1.b", "rb") as f:
  data = bytearray(f.read())


# Generate blocks for the save file.
blocks = []
for i in range(len(data)-4):
  try:
    if data[i:i + 1].decode("utf-8") == 'B':
      if data[i:i + 5].decode("utf-8") == "BLOCK":
        blocks.append(i + 5)
  except:
    pass


# Location for heath in the data.
health_offset = 0x24
health_loc = blocks[2] + health_offset


# print and edit the heath.
print(struct.unpack("<f", data[health_loc:health_loc+4]))
data[health_loc:health_loc+4] = struct.pack("<f", float(inf))


# generate checksum
data[-4:] = struct.pack("<I", sum(data[:-4]))


# save the file.
with open("gtasasf1.b", "wb") as out:
  out.write(data)