IDA 7.2 + hexrays-x64 leak

[Shelwien]

People finally cracked the password for Jan-2019 leak of IDA72 "crackme" installer,
by reproducing the password generation script from known passwords (turned out to be a rand-based perl script).

https://devco.re/blog/2019/06/21/ope...nusual-way-en/
https://www.reddit.com/r/ReverseEngi...nstaller_prng/

password is 7JpT48a7Y2fv

this is the script:

#!/usr/bin/env perl
#
@_e = split //,"abcdefghijkmpqrstuvwxyzABCDEFGHJKLMPQRSTUVWXYZ23456789";
 
$i=948301080;
 
srand($i);
 
rand 54; # собственно пропускаем 1 вызов rand...
 
$pw="";
for($i=0;$i<12;++$i)
{
    $key = rand 54;
    $pw = $pw . $_e[$key];
}
print "$pw\n";

[maadjordan]

Hi Shelwien, Do you use such tool to optimize your code like some do ?

[Shelwien]

Yes, I mainly use it as a debugger for my code though (it has an integrated debugger).