IDA Pro is in many ways unique. Its interactivity allows you to improve disassemblies in real time. Its multi-processor support is unmatched. Yet, two of our technologies are truly unique, have never been implemented under any form in any real-life disassemblers and, more importantly, are incredible time savers.
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There are at least 88 random number generators known. It is such a great variation. We first tried to find the charset used by random number generator. The missing of 1 , I , l , 0 , O , o , N , n seems to make sense because they are confusing characters. Next, we guess the possible charset ordering like these:. Then we examined whether the collected passwords appears in the combinations. For example, here is a generator written in C language:. With this, we can build a dictionary of installation password, which effectively increase the efficiency of brute force attack.
Generally, we can compute the password of one installer in 10 minutes. We have reported this issue to Hex-Rays, and they promised to harden the installation password immediately. In this article, we discussed the possibility of installing IDA Pro without owning installation password.
In the end, we found plaintext password in the program memory of Linux and MacOS version. On the other hand, we determined the password generation methodology of Windows version. Therefore, we can build a dictionary to accelerate brute force attack.
Finally, we can get one password at a reasonable time. We really enjoy this process: surmise wisely and prove it with our best. It can broaden our experience no matter the result is correct or not. This is why we took a whole month to verify such a difficult surmise. We also take this attitude in our Red Team Assessment. You would love to give it a try!
Lastly, we would like to thank for the friendly and rapid response from Hex-Rays. We really appreciate it. Share this on Facebook or Twitter.
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