Create a slightly customized version of UPX

UPX is an executable compression system that is open source. I want you to take the current latest version of UPX's source code (from here: [login to view URL]) and alter the code in a way that any executable compressed with the customized version cannot be unpacked with 'upx -d' command, and that the final executable no longer contains the "UPX" string marker. That is, change it to something else.

I can pay more, if your customized version cannot be automatically detected as "UPX compressed" by virustotal dot com.

The customized version must naturally still be able to compress a given Windows exe file (32 bits) and that compressed exe file must still run normally.

The purpose of this task is to create a slightly altered version of UPX to make it a bit more difficult for people to unpack the executable as an anti-piracy measure. I understand this step does not deter any determined cracker but if this makes them need to work five more minutes, it's worth it.

Compétences : Programmation C++, Programmation C

Concernant le client :
( 682 commentaires ) Braga, Portugal

Nº du projet : #33562821

Décerné à:


Hi, I have experience in UPX custom version, packer/unpackers, IDA, x64dbg, PE structure. VT detects from the file you want to obfuscate, if it is marked as "BAD file" UPX custom sometimes is not enough. Write me Plus

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Hello, sir. I have read your description. I am a person who you are looking for. I have skills you need. I am a C, C++, C# professional. I have especially rich experience with OS programming. I am sure that we will ful Plus

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