DumpedMethods CreateDumpedMethods(MyPEImage peImage, byte[] fileData, byte[] methodsData)
{
var dumpedMethods = new DumpedMethods();
var methodsDataReader = MemoryImageStream.Create(methodsData);
var fileDataReader = MemoryImageStream.Create(fileData);
var methodDef = peImage.MetaData.TablesStream.MethodTable;
for (uint rid = 1; rid <= methodDef.Rows; rid++)
{
var dm = new DumpedMethod();
peImage.ReadMethodTableRowTo(dm, rid);
if (dm.mdRVA == 0)
{
continue;
}
uint bodyOffset = peImage.RvaToOffset(dm.mdRVA);
byte b = peImage.OffsetReadByte(bodyOffset);
uint codeOffset;
if ((b & 3) == 2)
{
if (b != 2)
{
continue; // not zero byte code size
}
dm.mhFlags = 2;
dm.mhMaxStack = 8;
dm.mhLocalVarSigTok = 0;
codeOffset = bodyOffset + 1;
}
else
{
if (peImage.OffsetReadUInt32(bodyOffset + 4) != 0)
{
continue; // not zero byte code size
}
dm.mhFlags = peImage.OffsetReadUInt16(bodyOffset);
dm.mhMaxStack = peImage.OffsetReadUInt16(bodyOffset + 2);
dm.mhLocalVarSigTok = peImage.OffsetReadUInt32(bodyOffset + 8);
codeOffset = bodyOffset + (uint)(dm.mhFlags >> 12) * 4;
}
fileDataReader.Position = codeOffset;
if (!decrypter.Decrypt(fileDataReader, dm))
{
continue;
}
dumpedMethods.Add(dm);
}
return(dumpedMethods);
}
byte[] GetKeyData(uint baseOffset) =>
new byte[6]
{
peImage.OffsetReadByte(baseOffset + 5),
peImage.OffsetReadByte(baseOffset + 0xF),
peImage.OffsetReadByte(baseOffset + 0x58),
peImage.OffsetReadByte(baseOffset + 0x6D),
peImage.OffsetReadByte(baseOffset + 0x98),
peImage.OffsetReadByte(baseOffset + 0xA6),
};
byte ReadByte(uint offset) => peImage.OffsetReadByte(methodInfosOffset + offset);
byte ReadByte(uint offset)
{
return(peImage.OffsetReadByte(methodInfosOffset + offset));
}
DumpedMethods CreateDumpedMethods(MyPEImage peImage, byte[] fileData, byte[] methodsData) {
var dumpedMethods = new DumpedMethods();
var methodsDataReader = MemoryImageStream.Create(methodsData);
var fileDataReader = MemoryImageStream.Create(fileData);
var methodDef = peImage.MetaData.TablesStream.MethodTable;
for (uint rid = 1; rid <= methodDef.Rows; rid++) {
var dm = new DumpedMethod();
peImage.ReadMethodTableRowTo(dm, rid);
if (dm.mdRVA == 0)
continue;
uint bodyOffset = peImage.RvaToOffset(dm.mdRVA);
byte b = peImage.OffsetReadByte(bodyOffset);
uint codeOffset;
if ((b & 3) == 2) {
if (b != 2)
continue; // not zero byte code size
dm.mhFlags = 2;
dm.mhMaxStack = 8;
dm.mhLocalVarSigTok = 0;
codeOffset = bodyOffset + 1;
}
else {
if (peImage.OffsetReadUInt32(bodyOffset + 4) != 0)
continue; // not zero byte code size
dm.mhFlags = peImage.OffsetReadUInt16(bodyOffset);
dm.mhMaxStack = peImage.OffsetReadUInt16(bodyOffset + 2);
dm.mhLocalVarSigTok = peImage.OffsetReadUInt32(bodyOffset + 8);
codeOffset = bodyOffset + (uint)(dm.mhFlags >> 12) * 4;
}
fileDataReader.Position = codeOffset;
if (!decrypter.Decrypt(fileDataReader, dm))
continue;
dumpedMethods.Add(dm);
}
return dumpedMethods;
}