wechat2txt.py

import os
import sys
import re
import hashlib
import csv
import time
import locale
import getopt


def get_db():
    os.popen('adb root').close()
    text = os.popen(
        'adb shell ls /data/data/com.tencent.mm/MicroMsg/*/EnMicroMsg.db').read()
    return text.splitlines()[- 1] if text else ''


def get_default_uin():
    os.popen('adb root').close()
    text = os.popen(
        'adb shell cat /data/data/com.tencent.mm/shared_prefs/system_config_prefs.xml').read()
    default_uin = re.findall(
        'name="default_uin" value="([0-9]+)"', text)
    return default_uin[0] if default_uin else 0


def get_device_ID():
    text = os.popen('adb shell dumpsys iphonesubinfo').read()
    device_ID = re.findall('Device ID = ([0-9]+)', text)
    return device_ID[0] if device_ID else 0


def get_md5():
    default_uin = get_default_uin()
    device_ID = get_device_ID()
    if default_uin and device_ID:
        return hashlib.md5(device_ID + default_uin).hexdigest()[0: 7]
    return ''


def parse_msgcsv(msgcsv):
    locale.setlocale(locale.LC_ALL, '')
    if hasattr(msgcsv, 'title'):
        msgcsv = [ooOoo0O + '\n' for ooOoo0O in msgcsv.splitlines()]
        pass
    OooO0 = csv.reader(msgcsv)
    OooO0.next()
    for ooOoo0O in OooO0:
        try:
            II11iiii1Ii, OO0o, Ooo, O0o0Oo, Oo00OOOOO, O0O, O00o0OO, name, iIi1ii1I1, o0, I11II1i, IIIII = ooOoo0O[
                : 12]
            pass
        except:
            continue
        ooooooO0oo = 'me' if (Oo00OOOOO == '1') else name
        IIiiiiiiIi1I1 = time.localtime(int(O00o0OO) / 1000)
        I1IIIii = time.strftime("%Y-%m-%d %a %H:%M:%S", IIiiiiiiIi1I1)
        yield [name, I1IIIii, ooooooO0oo, iIi1ii1I1, o0]
        pass
    pass


def get_names(chat):
    names = {}
    for name, I1IIIii, ooooooO0oo, iIi1ii1I1, o0 in chat:
        names[name] = 1
        pass
    return names.keys()


def oo(chat, name=''):
    text = []
    name = name.lower()
    for name, I1IIIii, ooooooO0oo, iIi1ii1I1, o0 in chat:
        iIi1ii1I1 = iIi1ii1I1.replace('\n', '\n  ')
        o0 = ('\t' + o0) if o0 else ''
        if not name:
            text.append('%s: %s %s: %s %s' %
                        (name, I1IIIii, ooooooO0oo, iIi1ii1I1, o0))
            pass
        elif name.lower() == name:
            text.append('%s %s: %s %s' %
                        (I1IIIii, ooooooO0oo, iIi1ii1I1, o0))
            pass
        pass
    return '\n'.join(text) + '\n'


def IIIii1II1II(dbn, key=''):
    child_stdin, child_stdout = os.popen2(['sqlcipher', dbn])
    if key:
        child_stdin.write('PRAGMA key=%s;\n' % ` key `)
        child_stdin.write('pragma cipher_use_hmac=off;\n')
        pass
    child_stdin.write('.tables\n')
    child_stdin.close()
    return child_stdout.read().split()


def decrypt(dbn, key='', table='message'):
    table = table or 'message'
    child_stdin, child_stdout = os.popen2(['sqlcipher', dbn])
    child_stdin.write('.header on\n')
    child_stdin.write('.mode csv\n')
    if key:
        child_stdin.write('PRAGMA key=%s;\n' % ` key `)
        child_stdin.write('pragma cipher_use_hmac=off;\n')
        pass
    child_stdin.write('select * from %s;\n' % ` table `)
    child_stdin.close()
    return child_stdout.read()


def wechat2txt(names=[]):
    in_file = 'EnMicroMsg.db'
    out_file = 'message.csv'
    db = get_db()
    md5 = get_md5()
    os.popen('adb wait-for-device')
    os.popen('adb pull %s %s' % (db, in_file)).close()
    msgcsv = decrypt(in_file, md5)
    if msgcsv.find('\n') < 0:
        return 1
    file(out_file, 'w').write(msgcsv)
    msgs = list(parse_msgcsv(msgcsv))
    if not msgs:
        return 1
    if not names:
        names = get_names(msgs)
        pass
    for name in names:
        filename = 'message.%s.txt' % name
        text = oo(msgs, name)
        if len(text) > 4:
            file(filename, 'w').write(text)
            pass
        pass
    pass

help_msg = '''Usage: wechat2txt.py [OPTIONS] [NAME]...

OPTIONS:
    -h        display this help and exit
'''


def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], 'h')
    except getopt.error, e:
        print help_msg
        return 1
    for opt, arg in opts:
        if opt == '-h':
            print help_msg
            return 1
        pass
    names = args
    text = wechat2txt(names)
    return not text

if __name__ == "__main__":
    sys.exit(main())

Hey,I got the same problem .I got the key and just cannot decrypt the database.Can you show me any clue,that will be very appreciated.

Me too, the same error occured in my case. Does wechat(v6.3.13) change the PRAGMA?