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Manually unpacking upx

As a first unpacking exercise, I decided to try to unpack the famous UPX (without using upx -d of course). I chose an executable I had somewhere, built from C++ code in debug mode. I packed it using ...
-1
votes
1answer
410 views

Unpacking UPX OSX files

I was wondering if someone could provide me an UPX unpacker, which works with unix excutable files. I've tried a bunch of already, but all of those expect .EXE's which obviously won't work for me. ...
0
votes
1answer
182 views

Pyemu - cannot use PEPyEmu() module, Python

I want to run code from Gray Hat Python book for upx_unpacker. I have downloaded PyEmu, but when I run script I got this error: AttributeError: PEPyEmu instance has no attribute 'load' My script use ...
1
vote
1answer
872 views

Dose PE Explorer unpack upx executables?

I was analysing Lab01-02.exe from Practical Malware Analysis book, the exe is packed with upx, since it showed UPX0, 1, 2 in the header section when analyzed with PEview, but when I open the same exe ...
0
votes
1answer
320 views

Newbie unpacking diffculties

I'm trying to unpack a small application I compiled with VS2015 (v140_xp) and packed with UPX 3.93 (option -1). The application checks for IsDebuggerPresent and uses std::cout, nothing fancy. The ...
3
votes
1answer
937 views

UPX packing/unpacking information preservation

If I pack an executable using UPX and then unpack the executable using UPX -d, the executables are not the same. I understand techniques for unpacking executables that are packed using UPX, but I was ...
2
votes
2answers
24k views

Unpacking UPX packed (possibly scrambled) executable

I've decided to reverse this crackme. Obviously it's packed. I was told by PeID that there is only UPX inside. Ok, but upx -d simple crashed that's why I've concluded that this UPX may be scrambled ...
3
votes
1answer
700 views

An issue when unpacking UPX

Since I love to play with the WinAPI or debugging in general, I decided to write a small unpacker for the open source PE executable packer UPX today (Windows version). In order to accomplish this, I ...