| Obfuscated Crackme 2 |
@ok did you give up?
|
2026-09-22 05:53 |
| Obfuscated Crackme 2 |
[Click to reveal]@ok then your in for quite a meal I guess. (almost) every user has a valid password that will print the flag. As stated in the description keygen here is possible, the check is not just a decoy, tho it would be funny))) Heres a clue: What passwords have you tried? The extracted hex string is discarded almost immediately unless it has exactly 32 characters, that sounds like what you're seeing, nothing reading it that is, just discarded right away (std::string::length is checked right after the creation, I thought it would be noticeable). If still nothing accesses it even with hex 32 chars then I'm almost sure you just broke the binary with your patches/emulator (or your emulator is just high).
|
2026-09-19 06:25 |
| Obfuscated Crackme |
[Click to reveal]@durzhars sure, you can upload whatever you want. It's not me who accepts these, it's the site admins. I have no control over what gets uploaded under this post
|
2026-08-27 19:01 |
| Obfuscated Crackme |
I'd be really impressed if someone solved this the intended way, leaving the keys unencrypted in memory was just an oversight on my part
|
2026-08-27 09:14 |
| Obfuscated Crackme |
[Click to reveal]@stels after rereading your writeup, you're partially incorrect there, you say "The program doesn't compare your password to anything. It just runs dummy logic to burn your time", that's not really true, the password is actually compared to something, and making a keygen is possible (that doesn't mean your approach isn't valid). Here's the example username and password which should give you the flag:
Username: stels123 Do you happen to know what the password is?: 1BD6AA912F2B2B943F4166978D399C25 ---------------------------------------------- >.<... [+] Good Boy! All features unlocked successfully! [+] Flag: LEET_FLAG{D-Did_You_Just_Crack_Me!?!?} ---------------------------------------------- Session complete.
@durzhars maybe you'll be able to figure it out so that your writeup is a bit different from @stels
|
2026-08-27 09:09 |
| Obfuscated Crackme |
@stels nice writeup, I knew I shouldn't have left the keys just lying around in memory... The next one I make will be harder ;) so you'll actually have to get into how the logic works, I was hoping that it would be case here, so either patching or making a keygen (still would love to see someone do that on this binary). But oh well, no rules means no rules, and you got the key, thanks for cracking this!
|
2026-08-26 20:45 |
| Obfuscated Crackme |
@stels nice! congrats, waiting for the writeup
|
2026-08-26 17:41 |
| Obfuscated Crackme |
cool analysis, glad you were able to defeat anti debug and (almost) figure the exceptions out, tho the real hard part is after that. If you get stuck somewhere and need a hint let me know)))
|
2026-08-25 06:38 |
| Very simple but obfuscated crackme |
cool trick, thanks for taking the time to solve this. I'll be posting more of these with each update to the obfuscator, hopefully not as trivial as this one.
|
2026-08-16 14:00 |
| Very simple but obfuscated crackme |
@SVz nice! Would you say it was hard to see through the obfuscation?
|
2026-08-16 09:33 |