mike1k / perses Goto Github PK

• Transforming 0x140002fc2 (0x5f) - [ mov r8b, byte ptr [rbp-0x2C] ]

vvvvvvvvvvvvvvvvvvv
vvvvvvvvvvvvvvvvvvv1111

//
printf("vvvvvvvvvvvvvvvvvvv\n");
/**/
switch (insn.decoded.mnemonic)
{
case ZYDIS_MNEMONIC_PUSH:
handled = handlePush(&insn);
break;
case ZYDIS_MNEMONIC_MOV:
printf("vvvvvvvvvvvvvvvvvvv1111\n");
handled = handleMov(&insn);
printf("vvvvvvvvvvvvvvvvvvv2222\n");

Hi, I have used perses to compile a demo program.
After I started the compiled(obfuscated) program, it just crashed.
Some simple analysis later, I saw the compiled process did not jump over the code snippet of PERSES_MUTATION_START macro.

eg.

If I set eip explicitly so that eip pointed to the instruction following cli, then everything went well.

dude the sdk makes the program crash, what the fuck, do you actual code ?

EXE does not support the compile option /FIXED.
I think the following code should be added when handling relocations.

_peFile.getRelocDir().isPresent()

Heya,

Would be nice if you could add the cmkr topic to the repository (and maybe a few others like x86, obfuscation, etc for better discoverability). I'm using it to make sure new releases stay compatible and to look for possible ways to improve.

Cheers,

Duncan

template
class RelocationDirectory : pepp::msc::NonCopyable
{
private:
//! Setup the directory
void _setup(Image* image) {
m_image = image;
m_base = reinterpret_cast<decltype(m_base)>(
&image->base()[image->getPEHdr().rvaToOffset(
image->getPEHdr().getOptionalHdr().getDataDir(DIRECTORY_ENTRY_BASERELOC).VirtualAddress)]); //this line
m_section =
&image->getSectionHdrFromVa(image->getPEHdr().getOptionalHdr().getDataDir(DIRECTORY_ENTRY_BASERELOC).VirtualAddress);
}
}
In the line of m_base = *, rvaToOffset may return zero like empty relocation table.

If possible, I would like to enhance the support for SEH :)