mirror of
https://github.com/brain-hackers/lab
synced 2024-11-01 07:47:59 +09:00
35 lines
997 B
Python
Executable File
35 lines
997 B
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
import sys
|
|
|
|
|
|
def main():
|
|
if len(sys.argv) < 6:
|
|
print(f"Usage: {sys.argv[0]} total page_offset disable_mmu.bin injected.bin out.bin")
|
|
sys.exit(1)
|
|
|
|
total, offset, dismmu, injected, out = sys.argv[1:6]
|
|
total = int(total, base=16 if total.startswith('0x') else 10)
|
|
offset = int(offset, base=16 if offset.startswith('0x') else 10)
|
|
|
|
if total % 4 != 0:
|
|
print(f'Total is not aligned', file=sys.stderr)
|
|
sys.exit(1)
|
|
elif offset % (1024 * 64) != 0:
|
|
print(f'Page offset is not aligned', file=sys.stderr)
|
|
sys.exit(1)
|
|
|
|
with open(dismmu, 'rb') as dmf, open(injected, 'rb') as injf, open(out, 'wb') as out:
|
|
nop = b'\x00\x00\xa0\xe1'
|
|
dm = dmf.read()
|
|
inj = injf.read()
|
|
|
|
out.write(dm)
|
|
out.write(nop * ((offset - len(dm)) // 4))
|
|
out.write(nop * ((1024 * 64 - len(inj)) // 4))
|
|
out.write(inj)
|
|
out.write(nop * ((total - offset - 1024 * 64) // 4))
|
|
|
|
|
|
main()
|