Psi/PasswordRecover
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< Psi
Декодирование пароля на Perl[edit]
В качестве аргументов инлайну на Perl нужно указать JID и хэш из тега <password type="QString">, который находится в файле ~/.psi/profiles/default/accounts.xml
Например:
perl -le '($jid,$pw)=@ARGV;$pw=~s/..(..)/chr hex$1/ge; print substr($pw^$jid,0,length$pw)' leksey@ya.ru 000100020003007e
На python[edit]
Скрипт для восстановления пароля в Psi (не работает с Psi старше 0.13 - способ криптования не изменился, поменялся формат конфига) под Unix-совместимыми системами. Также должен функционировать и в MS Windows, но это не проверялось.
#!/usr/bin/python
# -*- encoding: utf-8 -*-
"""
Script to decode Psi passwords stored in config.xml file.
The code is based on psi-0.12 sources, so it's distributed under
the same license.
Copyright (C) 2008 Leonid Evdokimov <leon@darkk.net.ru>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Origin:
http://darkk.net.ru/home/bin/psi-pass-dump.py
Changelog:
0.1 - Initial revision.
"""
def encodePassword(password, key):
"""
// psi-0.12/src/common.cpp:113:QString encodePassword(const QString &pass, const QString &key)
QString encodePassword(const QString &pass, const QString &key)
{
QString result;
int n1, n2;
if(key.length() == 0)
return pass;
for(n1 = 0, n2 = 0; n1 < pass.length(); ++n1) {
ushort x = pass.at(n1).unicode() ^ key.at(n2++).unicode();
QString hex;
hex.sprintf("%04x", x);
result += hex;
if(n2 >= key.length())
n2 = 0;
}
return result;
}
"""
if len(key) == 0:
return password
result = u""
for offset, char in enumerate(password):
x = ord(char) ^ ord(key[offset % len(key)])
result += "%04x" % x
return result
def decodePassword(password, key):
"""
// psi-0.12/src/common.cpp:132:QString decodePassword(const QString &pass, const QString &key)
QString decodePassword(const QString &pass, const QString &key)
{
QString result;
int n1, n2;
if(key.length() == 0)
return pass;
for(n1 = 0, n2 = 0; n1 < pass.length(); n1 += 4) {
ushort x = 0;
if(n1 + 4 > pass.length())
break;
x += QString(pass.at(n1)).toInt(NULL,16)*4096;
x += QString(pass.at(n1+1)).toInt(NULL,16)*256;
x += QString(pass.at(n1+2)).toInt(NULL,16)*16;
x += QString(pass.at(n1+3)).toInt(NULL,16);
QChar c(x ^ key.at(n2++).unicode());
result += c;
if(n2 >= key.length())
n2 = 0;
}
return result;
}
"""
if len(key) == 0:
return password
assert len(password) % 4 == 0
result = u""
password = [int(password[i:i+4], 16) for i in xrange(0, len(password), 4)]
for offset, char in enumerate(password):
x = char ^ ord(key[offset % len(key)])
result += unichr(x)
return result
if __name__ == '__main__':
import xml.etree.ElementTree as ElementTree
import os.path
tree = ElementTree.parse(os.path.expanduser('~/.psi/profiles/default/config.xml'))
for acc in tree.findall('//accounts/account'):
jid = acc.findtext('jid')
password = acc.findtext('password')
if password:
print jid, decodePassword(password, jid)
else:
print jid, u"None"
# vim:set tabstop=4 softtabstop=4 shiftwidth=4:
# vim:set expandtab:
Отличие от оригинального файла в том, что из строки print jid, u"None" убраны Unicode-символы, чтобы скрипт работал в KOI8-R окружении ОС FreeBSD.