转子看雪论坛,感谢原作者
#!/usr/bin/env python # coding=cp936 # 将ida导出的.dif 补丁到程序中 import re from sys import argv,exit def patch(file, dif, revert=False): code = open(file,'rb').read() dif = open(dif,'r').read() m = re.findall('([0-9a-fA-F]+): ([0-9a-fA-F]+) ([0-9a-fA-F]+)', dif) for offset,orig,new in m: o, orig, new = int(offset,16), orig.decode('hex'), new.decode('hex') if revert: if code[o]==new: code = code[:o]+orig+code[o+1:] else: raise Exception("patched byte at %s is not %02X" % (offset, ord(new))) else: if code[o]==orig: code = code[:o]+new+code[o+1:] else: raise Exception("original byte at %s is not %02X" % (offset, ord(orig))) open(file,'wb').write(code) def main(): if len(argv)<3: print "Usage: %s <binary> <IDA.dif file> [revert]" % (argv[0]) print "For example: idadif executable.exe executable.dif" print "Applies given IDA .dif file to patch binary; use revert to revert patch." exit(0) file, dif, revert = argv[1], argv[2], False if len(argv)>3: revert = True print "Reverting patch %r on file %r" % (dif, file) else: print "Patching file %r with %r" % (file, dif) try: patch(file, dif, revert) print "Done" except Exception, e: print "Error: %s" % str(e) exit(1) if __name__ == "__main__": main()
用法 idadif.py xx.exe xx.dif
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