// init the PE object
PE pe = new PE("app.exe");

// get info about architecture
Console.WriteLine("is32bit : " + pe.header.is32Bit);

// get info about image base

// get the offset of the raw image base in file
int imageBaseOffset = pe.header.optionalHeader.ImageBase.getOffset();

// get the value of image base
int imageBase = pe.header.optionalHeader.ImageBase.getValue();

Console.WriteLine("ImageBase at 0x" + imageBaseOffset.ToString("X") + " : 0x" 
    + imageBase.ToString("X"));

// print info about sections
Console.WriteLine("Sections : ");

// loop through all sections
foreach (SectionEntry section in pe.sections.sectionEntries)
{
    // get section name
    string name = section.name.ToString();
    // get section data offset
    int dataOffset = section.pointerToRawData.getValue();
    // get section data size
    int size = section.sizeOfRawData.getValue();
    // get raw data of section
    byte[] sectionBuffer = section.getSectionBuffer();

    Console.WriteLine(name + " at 0x" + dataOffset.ToString("X") 
      + " (size : 0x" + size.ToString("X") + ")");
}

// close handles
pe.Dispose();

PE pe = new PE("app.exe");

// get the exported optional header raw buffer
byte[] optionalHeader = pe.header.optionalHeader.export().ToArray<byte>();

// doing something with it ...

// close handles
pe.Dispose();

PE pe = new PE("app.exe");

// update the executable subsystem
pe.header.optionalHeader.peSubSystem.setValue(SubSystem.NATIVE_WINDOWS);

// fix the stack size
pe.header.optionalHeader.SizeOfStackReserve.setValue(0x1000);

// get some data
byte[] virtualizedCode = ...

// add a new section
pe.sections.addSection(".vlizer", virtualisedCode, SectionTypes.DATA_SECTION);

// write the output executable
File.WriteAllBytes("app_obfuscated.exe", pe.export().ToArray<byte>());

// close handles
pe.Dispose();