321 lines
12 KiB
Python
321 lines
12 KiB
Python
#Written by JoshuaMK 2020
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import sys, os, time
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def resource_path(relative_path):
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""" Get absolute path to resource, works for dev and for PyInstaller """
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base_path = getattr(sys, '_MEIPASS', os.path.dirname(os.path.abspath(__file__)))
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return os.path.join(base_path, relative_path)
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def build(gct, dol, size):
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with open(resource_path('sme-code.bin'), 'rb') as code, open(dol, 'rb+') as dol, open(gct, 'rb') as gecko, open(resource_path('codehandler.bin'), 'rb') as handler, open('tmp.bin', 'wb+') as tmp, open(os.path.join('BUILD', os.path.split(r'{}'.format(dol))[1][:-2]), 'wb+') as final:
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'''Initialize the new DOL file'''
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final.write(dol.read())
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'''Initialize the sme-code loader'''
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tmp.write(code.read())
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code.seek(0, 0)
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tmp.seek(0, 0)
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'''Search for main entry of loader'''
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entryIndex = 0
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sample = tmp.read(4)
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while sample:
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if sample == ENTRY:
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tmp.seek(-4, 1)
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tmp.write(bytes.fromhex('7C0802A6'))
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break
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entryIndex += 4
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sample = tmp.read(4)
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tmp.seek(0)
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'''Get BSS section for insert'''
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final.seek(int('D8', 16))
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BSS = int(final.read(4).hex(), 16)
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BSS_length = int(final.read(4).hex(), 16)
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dump_address = '{:08X}'.format(int(BSS + (BSS_length / 2)))[:-2] + '00'
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_START = bytes.fromhex('{:08X}'.format(int(dump_address, 16) + entryIndex))
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cLoader = bytes.fromhex(dump_address)
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'''Get address split for later'''
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upperAddr, lowerAddr = dump_address[:int(len(dump_address)/2)], dump_address[int(len(dump_address)/2):]
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'''Get code initialize address'''
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final.seek(int('E0', 16))
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_init = final.read(4)
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'''Patch the values for the addresses and such'''
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hooked = False
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heaped = False
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sized = False
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fsized = False
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initUpperAddr = bytes.fromhex(upperAddr)
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geckoUpperAddr = bytes.fromhex(upperAddr)
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gUpperAddr = bytes.fromhex(upperAddr)
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while hooked == False or heaped == False or sized == False or fsized == False:
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try:
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sample = tmp.read(4)
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if sample == HOOK: #Found keyword "HOOK". Goes with the entry to the game
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if not hooked:
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tmp.seek(-4, 1)
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initInfo = tmp.tell()
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if int(lowerAddr, 16) + initInfo > int('7FFF', 16): #Absolute addressing
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initUpperAddr = bytes.fromhex('{:04X}'.format(int(upperAddr, 16) + 1))
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if int(lowerAddr, 16) + (initInfo + 4) > int('7FFF', 16): #Absolute addressing
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geckoUpperAddr = bytes.fromhex('{:04X}'.format(int(upperAddr, 16) + 1))
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tmp.write(_init)
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hooked = True
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elif sample == HEAP: #Found keyword "HEAP". Goes with the resize of the heap
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if not heaped:
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tmp.seek(-4, 1)
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gInfo = tmp.tell()
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if int(lowerAddr, 16) + gInfo > int('7FFF', 16): #Absolute addressing
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gUpperAddr = bytes.fromhex('{:04X}'.format(int(upperAddr, 16) + 1))
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if size == '0' or size == '':
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tmp.write(get_size(gecko))
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else:
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tmp.write(bytes.fromhex('{:08X}'.format(int(size, 16))))
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heaped = True
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elif sample == LOADERSIZE: #Found keyword "LSIZ". Goes with the size of the loader
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if not sized:
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tmp.seek(-4, 1)
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tmp.write(get_size(code))
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sized = True
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elif sample == FULLSIZE: #Found keyword "FSIZ". Goes with the size of the loader + codes
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if not fsized:
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tmp.seek(-4, 1)
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code.seek(0, 2)
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gecko.seek(0, 2)
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tmp.write(get_size(code, gecko.tell()))
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fsized = True
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except TypeError as err:
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print('Fatal error (' + err + '), build failed to complete')
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time.sleep(3)
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sys.exit(1)
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'''Patch all load/store offsets to data'''
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tmp.seek(0)
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sample = tmp.read(2)
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while sample:
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if sample == GH:
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tmp.seek(-2, 1)
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tmp.write(gUpperAddr)
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elif sample == GL:
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tmp.seek(-2, 1)
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tmp.write(bytes.fromhex('{:04X}'.format(int(lowerAddr, 16) + gInfo)))
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elif sample == CH:
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tmp.seek(-2, 1)
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tmp.write(geckoUpperAddr)
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elif sample == CL:
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tmp.seek(-2, 1)
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tmp.write(bytes.fromhex('{:04X}'.format(int(lowerAddr, 16) + (initInfo + 4))))
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elif sample == IH:
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tmp.seek(-2, 1)
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tmp.write(initUpperAddr)
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elif sample == IL:
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tmp.seek(-2, 1)
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tmp.write(bytes.fromhex('{:04X}'.format(int(lowerAddr, 16) + initInfo)))
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elif sample == JH:
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tmp.seek(-2, 1)
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tmp.write(geckoUpperAddr)
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elif sample == JL:
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tmp.seek(-2, 1)
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tmp.write(bytes.fromhex('{:04X}'.format(int(lowerAddr, 16) + (initInfo + 8))))
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sample = tmp.read(2)
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tmp.seek(0)
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gecko.seek(0)
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dol_handler_offset = get_size(final)
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final.write(handler.read())
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time.sleep(0.01)
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dol_sme_offset = get_size(final)
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final.write(tmp.read())
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time.sleep(0.01)
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final.write(gecko.read())
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final.seek(0, 0)
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status = False
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i = 0
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while i < 6:
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size = int(final.read(4).hex(), 16)
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if size == 0:
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status = True
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offset = i * 4
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final.seek(-4, 1)
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final.write(dol_handler_offset)
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final.write(dol_sme_offset)
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final.seek(int('48', 16) + offset)
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final.write(bytes.fromhex('80001800'))
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final.write(cLoader)
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final.seek(int('E0', 16))
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final.write(_START)
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handler_size = get_size(handler)
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tmp.seek(0, 2)
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gecko.seek(0, 2)
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sme_code_size = get_size(tmp, gecko.tell())
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final.seek(int('90', 16) + offset)
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final.write(handler_size)
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final.write(sme_code_size)
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break
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else:
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i += 1
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if status == False:
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print('Not enough sections to patch the DOL file! Potentially due to previous mods?')
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def get_size(file, offset=0):
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""" Return a file's size in bytes """
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file.seek(0, 2)
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return(bytes.fromhex('{:08X}'.format(file.tell() + offset)))
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if __name__ == "__main__":
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if len(sys.argv) == 1:
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while True:
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gct = input('Name of the input GCT file? ')
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if os.path.splitext(gct)[1] == '':
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gct = gct + '.gct'
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if os.path.splitext(gct)[1] != '.gct' and os.path.splitext(gct)[1] != '.GCT':
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print('Invalid input!')
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continue
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if os.path.exists(gct):
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gct = os.path.abspath(gct)
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break
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else:
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print('File not found! Please try again.')
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while True:
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dol = input('Name of the input dol file? ')
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if os.path.splitext(dol)[1] == '':
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dol = dol + '.dol'
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if os.path.splitext(dol)[1] != '.dol':
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print('Invalid input!')
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continue
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if os.path.exists(dol):
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dol = os.path.abspath(dol)
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break
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else:
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print('File not found! Please try again.')
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elif len(sys.argv) == 2:
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if sys.argv[1].endswith('.gct') or sys.argv[1].endswith('.GCT'):
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gct = sys.argv[1]
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while True:
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dol = input('Name of the input dol file? ')
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if os.path.splitext(dol)[1] == '':
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dol = dol + '.dol'
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if os.path.splitext(dol)[1] != '.dol':
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print('Invalid input!')
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continue
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if os.path.exists(dol):
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dol = os.path.abspath(dol)
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break
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else:
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print('File not found! Please try again.')
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elif sys.argv[1].endswith('.dol'):
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dol = sys.argv[1]
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while True:
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gct = input('Name of the input GCT file? ')
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if os.path.splitext(gct)[1] == '':
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gct = gct + '.gct'
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if os.path.splitext(gct)[1] != '.gct' and os.path.splitext(gct)[1] != '.GCT':
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print('Invalid input!')
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continue
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if os.path.exists(gct):
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gct = os.path.abspath(gct)
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break
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else:
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print('File not found! Please try again.')
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else:
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print('The given file is invalid! Please provide a valid dol file, a valid GCT file, or both.')
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time.sleep(1)
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sys.exit(1)
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else:
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if sys.argv[1].endswith('.gct') or sys.argv[1].endswith('.GCT'):
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gct = sys.argv[1]
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if sys.argv[2].endswith('.dol'):
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dol = sys.argv[2]
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else:
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while True:
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dol = input('Name of the input DOL file? ')
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if os.path.splitext(dol)[1] == '':
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dol = dol + '.dol'
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if os.path.splitext(dol)[1] != '.dol':
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print('Invalid input!')
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continue
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if os.path.exists(dol):
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dol = os.path.abspath(dol)
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break
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else:
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print('File not found! Please try again.')
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elif sys.argv[1].endswith('.dol'):
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dol = sys.argv[1]
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if sys.argv[2].endswith('.gct') or sys.argv[2].endswith('.GCT'):
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gct = sys.argv[2]
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else:
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while True:
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gct = input('Name of the input GCT file? ')
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if os.path.splitext(gct)[1] == '':
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gct = gct + '.gct'
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if os.path.splitext(gct)[1] != '.gct' and os.path.splitext(gct)[1] != '.GCT':
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print('Invalid input!')
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continue
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if os.path.exists(gct):
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gct = os.path.abspath(gct)
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break
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else:
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print('File not found! Please try again.')
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else:
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print('The given files are invalid! Please provide a valid DOL file, a valid GCT file, or both.')
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sys.exit(1)
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while True:
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size = input('Define code allocation in hex. (Type 0 or press Enter on empty input for auto size): ')
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try:
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int(size, 16)
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break
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except Exception:
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if size == '':
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break
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else:
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print('Invalid input! {} is not hexadecimal!'.format(size))
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time1 = time.time()
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HEAP = bytes.fromhex('48454150')
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LOADERSIZE = bytes.fromhex('4C53495A')
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FULLSIZE = bytes.fromhex('4653495A')
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HOOK = bytes.fromhex('484F4F4B')
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ENTRY = bytes.fromhex('454E5452')
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GH = bytes.fromhex('4748')
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GL = bytes.fromhex('474C')
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CH = bytes.fromhex('4348')
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CL = bytes.fromhex('434C')
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IH = bytes.fromhex('4948')
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IL = bytes.fromhex('494C')
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JH = bytes.fromhex('4A48')
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JL = bytes.fromhex('4A4C')
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try:
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if not os.path.isdir('BUILD'):
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os.mkdir('BUILD')
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build(gct, dol, size)
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os.remove('tmp.bin')
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print('Compiled in {:0.4f} seconds!'.format(time.time() - time1))
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time.sleep(4)
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except Exception as err:
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print(err)
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time.sleep(4)
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sys.exit(1)
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