elf_crumble.py

import itertools

blocks = []
for i in xrange(1, 9):
    blocks.append(open("fragment_%d.dat" % i, "rb").read())

for p in itertools.permutations(range(1,9)):
    data = ""
    for i in p:
        data += blocks[i-1]
        
    if data[0x5ad-0x5ad:0x5ad-0x5ad+3] != "\x55\x89\xe5":
        continue
        
    if data[0x72e-0x5ad:0x72e-0x5ad+3] != "\x55\x89\xe5":
        continue
        
    if data[0x7a2-0x5ad:0x7a2-0x5ad+3] != "\x55\x89\xe5":
        continue
        
    if p[7] != 4:
        continue
        
    id = "".join(str(x) for x in p)
    
    data2 = open("broken", "rb").read()
    data3 = data2.replace("X" * 0x327, data)

    assert len(data2) == len(data3)

    open("badfix" + id, "wb").write(data3)