defc0n Posted September 3, 2017 Share Posted September 3, 2017 (edited) Difficulty: 3 (Normal)Language: DelphiPlatform: Windows x32/x64OS Version: Windows XP, Win7, Win8, Win 8.1, Win10Packer / Protector : none Description : Hi guys, presenting my new creation. The only solution is a working keygen as always!. Patching is not allowed. Prizes: 1) Keygen: Gold 2) Serial: Silver Winners: To be decided... Screenshot : Have fun! Regards defc0n/2k17 RCE2.zip Edited September 3, 2017 by defc0n 1 Link to comment Share on other sites More sharing options...
Hero Posted September 18, 2017 Share Posted September 18, 2017 Spoiler That was a tricky one. 2 1 Link to comment Share on other sites More sharing options...
GautamGreat Posted September 18, 2017 Share Posted September 18, 2017 2 hours ago, Hero said: Reveal hidden contents That was a tricky one. Great work How did you do that? Some information will be appreciated. Link to comment Share on other sites More sharing options...
Hero Posted September 18, 2017 Share Posted September 18, 2017 1 hour ago, GautamGreat said: How did you do that? Some information will be appreciated. What can I say here? I simply learned the correct format of the key. It was a piece of cake to work backwards after that, hardware breakpoints are great. I eventually learned the algorithm and how long the correct serial should be. Link to comment Share on other sites More sharing options...
defc0n Posted September 19, 2017 Author Share Posted September 19, 2017 20 hours ago, Hero said: Reveal hidden contents That was a tricky one. Superbly done! Looking forward to your keygen and tutorial Link to comment Share on other sites More sharing options...
VirtualPuppet Posted September 19, 2017 Share Posted September 19, 2017 (edited) Edited September 19, 2017 by VirtualPuppet 2 1 Link to comment Share on other sites More sharing options...
GautamGreat Posted September 21, 2017 Share Posted September 21, 2017 i am stuck at VA : 00455224 It looks like a procedure where generates a valid serial number. I stucked here. It is so complex for noobs like me. Can some one please explain how this algo works. Link to comment Share on other sites More sharing options...
Solution VirtualPuppet Posted September 21, 2017 Solution Share Posted September 21, 2017 (edited) 2 hours ago, GautamGreat said: i am stuck at VA : 00455224 It looks like a procedure where generates a valid serial number. I stucked here. It is so complex for noobs like me. Can some one please explain how this algo works. It takes a serial-number vector (the parsed serial number) and the name-checksum string, then runs the algorithm on them to produce what is supposed to yield the same result as the name-hash. If the hashes are identical, the serial is considered "correct". Here's the full solution for reference: https://pastebin.com/6KCfACR4 Edited September 21, 2017 by VirtualPuppet 3 Link to comment Share on other sites More sharing options...
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