zipcracker，crc

Zip伪加密破解神器——ZipCracker-CSDN博客

命令

1.伪加密识别及修复

python ZipCracker.py test01.zip

2.暴力破解-内置字典

python ZipCracker.py test02.zip

3.暴力破解-用户自定义字典

python ZipCracker.py test02.zip MyDict.txt

crc

theonlypwner/crc32: CRC32 tools: reverse, undo/rewind, and calculate hashes (github.com)

exp

from binascii import crc32
import string
import zipfile

dic = string.printable


def CrackCrc(crc):
    for i in dic:
        # print (i)
        for j in dic:
            s = i + j
            # print (crc32(bytes(s,'ascii')) & 0xffffffff)
            if crc == (crc32(bytes(s, 'ascii')) & 0xffffffff):
                print(s)
                return


def getcrc32(fname):
    l = []
    file = fname
    f = zipfile.ZipFile(file, 'r')
    global fileList
    fileList = f.namelist()
    print(fileList)
    # print (type(fileList))
    for filename in fileList:
        Fileinfo = f.getinfo(filename)
        # print(Fileinfo)
        crc = Fileinfo.CRC
        # print ('crc',crc)
        l.append(crc)
    return l


def main(filename=None):
    l = getcrc32(filename)
    # print(l)
    for i in range(len(l)):
        print(fileList[i], end='的内容是:')
        CrackCrc(l[i])


if __name__ == "__main__":
    main('cccccccrc.zip')