def extractImage(dyld: Dyld.DyldFile, image: Dyld.dyld_cache_image_info,
outputPath: str) -> None:
"""Extract and image
Args:
dyld: The DyldFile to extract from.
image: The target image to extract.
outputPath: The path to extract to.
"""
imageOff = dyld.convertAddr(image.address)
machoFile = MachO.MachoFile.parse(dyld.file, imageOff)
# rebuild the linkedit segment, which includes symbols
logging.info("Starting LinkeditConverter")
Converter.LinkeditConverter(machoFile, dyld).convert()
# remove extra data in pointers and generate rebase data
logging.info("Starting RebaseConverter")
Converter.RebaseConverter(machoFile, dyld).convert()
# fix references to selectors
logging.info("Starting SelectorConverter")
Converter.SelectorConverter(machoFile, dyld).convert()
# fix stubs and references to stubs
logging.info("Starting StubConverter")
Converter.StubConverter(machoFile, dyld).convert()
# fix and decache ObjC info
logging.info("Starting ObjCConverter")
Converter.ObjCConverter(machoFile, dyld).convert()
# changes file offsets so that the final MachO file is not GBs big
logging.info("Starting OffsetConverter")
Converter.OffsetConverter(machoFile).convert()
# save the converted image to a file
logging.info("Starting Writer")
MachO.Writer(machoFile).writeToPath(outputPath)
pass
def runOnce(imageIndex: int, path: str) -> None:
"""
Decache an image at the imageIndex, and save it to the path.
"""
with open(DYLD_PATH, "rb") as dyldFile:
dyld = Dyld.DyldFile(dyldFile)
image = dyld.images[imageIndex]
imageOff = dyld.convertAddr(image.address)
macho = MachO.MachoFile.parse(dyldFile, imageOff)
# comment or uncomment lines below to enable or disable modules. Though some do rely on each other.
# rebuild the linkedit segment, which includes symbols
print("LinkeditConverter")
LinkeditConverter(macho, dyld).convert()
# remove extra data in pointers and generate rebase data
print("RebaseConverter")
RebaseConverter(macho, dyld).convert()
# fix references to selectors
print("SelectorConverter")
SelectorConverter(macho, dyld).convert()
# fix stubs and references to stubs
print("StubConverter")
StubConverter(macho, dyld).convert()
# fix and decache ObjC info
print("ObjCConverter")
ObjCConverter(macho, dyld).convert()
# changes file offsets so that the final MachO file is not GBs big
print("OffsetConverter")
OffsetConverter(macho).convert()
# save the converted image to a file
print("Writer")
MachO.Writer(macho).writeToPath(path)