diff --git a/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc b/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc index 10522ca..7d87b09 100644 --- a/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc +++ b/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc @@ -854,9 +854,6 @@ void RyujinObfuscationCore::insertAntiDebug() { auto& data = m_proc.basic_blocks[block_info.first].opcodes[block_info.second]; - /* - There is no need to obfuscate the anti-debug stub code. the junk code/mutation itself will handle that during processing. - */ asmjit::JitRuntime runtime; asmjit::CodeHolder code; @@ -1580,16 +1577,16 @@ void RyujinObfuscationCore::insertAntiDebug() { a.popfq(); // Getting new opcodes to insert in place of the old block - std::vector minivm_enter; + std::vector antidebug_instructions; auto& opcodeBuffer = code.sectionById(0)->buffer(); const auto pOpcodeBuffer = opcodeBuffer.data(); - minivm_enter.reserve(opcodeBuffer.size()); + antidebug_instructions.reserve(opcodeBuffer.size()); // Storing our new opcodes for antidebug detection - for (auto i = 0; i < opcodeBuffer.size(); ++i) minivm_enter.push_back(static_cast(pOpcodeBuffer[i])); + for (auto i = 0; i < opcodeBuffer.size(); ++i) antidebug_instructions.push_back(static_cast(pOpcodeBuffer[i])); // Saving the opcode block - data.assign(minivm_enter.begin(), minivm_enter.end()); + data.assign(antidebug_instructions.begin(), antidebug_instructions.end()); // There’s no need to insert it more than once per function. isInserted = TRUE; @@ -1620,7 +1617,207 @@ void RyujinObfuscationCore::insertAntiDump() { auto& data = m_proc.basic_blocks[block_info.first].opcodes[block_info.second]; - std::printf("RyujinObfuscationCore::insertAntiDump\n"); + asmjit::JitRuntime runtime; + + asmjit::CodeHolder code; + code.init(runtime.environment()); + asmjit::x86::Assembler a(&code); + + // First, saving the states + + // Push flags + a.pushfq(); + + // Push regs + a.push(asmjit::x86::rax); + a.push(asmjit::x86::rcx); + a.push(asmjit::x86::rdx); + a.push(asmjit::x86::rbx); + a.push(asmjit::x86::rbp); + a.push(asmjit::x86::rsi); + a.push(asmjit::x86::rdi); + a.push(asmjit::x86::r8); + a.push(asmjit::x86::r9); + a.push(asmjit::x86::r10); + a.push(asmjit::x86::r11); + a.push(asmjit::x86::r12); + a.push(asmjit::x86::r13); + a.push(asmjit::x86::r14); + a.push(asmjit::x86::r15); + + // Add the AntiDump stub + std::vector antiDumpShellcode = { + + 0x48, 0x81, 0xEC, 0x48, 0x01, 0x00, 0x00, 0x65, 0x48, 0x8B, 0x04, 0x25, + 0x60, 0x00, 0x00, 0x00, 0x48, 0x89, 0x84, 0x24, 0x98, 0x00, 0x00, 0x00, + 0x48, 0x83, 0xBC, 0x24, 0x98, 0x00, 0x00, 0x00, 0x00, 0x74, 0x0F, 0x48, + 0x8B, 0x84, 0x24, 0x98, 0x00, 0x00, 0x00, 0x48, 0x83, 0x78, 0x18, 0x00, + 0x75, 0x05, 0xE9, 0xF6, 0x05, 0x00, 0x00, 0xB8, 0x6E, 0x00, 0x00, 0x00, + 0x66, 0x89, 0x84, 0x24, 0xA8, 0x00, 0x00, 0x00, 0xB8, 0x74, 0x00, 0x00, + 0x00, 0x66, 0x89, 0x84, 0x24, 0xAA, 0x00, 0x00, 0x00, 0xB8, 0x64, 0x00, + 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xAC, 0x00, 0x00, 0x00, 0xB8, 0x6C, + 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xAE, 0x00, 0x00, 0x00, 0xB8, + 0x6C, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xB0, 0x00, 0x00, 0x00, + 0xB8, 0x2E, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xB2, 0x00, 0x00, + 0x00, 0xB8, 0x64, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xB4, 0x00, + 0x00, 0x00, 0xB8, 0x6C, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xB6, + 0x00, 0x00, 0x00, 0xB8, 0x6C, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, + 0xB8, 0x00, 0x00, 0x00, 0x33, 0xC0, 0x66, 0x89, 0x84, 0x24, 0xBA, 0x00, + 0x00, 0x00, 0xC6, 0x44, 0x24, 0x58, 0x4E, 0xC6, 0x44, 0x24, 0x59, 0x74, + 0xC6, 0x44, 0x24, 0x5A, 0x50, 0xC6, 0x44, 0x24, 0x5B, 0x72, 0xC6, 0x44, + 0x24, 0x5C, 0x6F, 0xC6, 0x44, 0x24, 0x5D, 0x74, 0xC6, 0x44, 0x24, 0x5E, + 0x65, 0xC6, 0x44, 0x24, 0x5F, 0x63, 0xC6, 0x44, 0x24, 0x60, 0x74, 0xC6, + 0x44, 0x24, 0x61, 0x56, 0xC6, 0x44, 0x24, 0x62, 0x69, 0xC6, 0x44, 0x24, + 0x63, 0x72, 0xC6, 0x44, 0x24, 0x64, 0x74, 0xC6, 0x44, 0x24, 0x65, 0x75, + 0xC6, 0x44, 0x24, 0x66, 0x61, 0xC6, 0x44, 0x24, 0x67, 0x6C, 0xC6, 0x44, + 0x24, 0x68, 0x4D, 0xC6, 0x44, 0x24, 0x69, 0x65, 0xC6, 0x44, 0x24, 0x6A, + 0x6D, 0xC6, 0x44, 0x24, 0x6B, 0x6F, 0xC6, 0x44, 0x24, 0x6C, 0x72, 0xC6, + 0x44, 0x24, 0x6D, 0x79, 0xC6, 0x44, 0x24, 0x6E, 0x00, 0x48, 0xC7, 0x84, + 0x24, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x84, + 0x24, 0x98, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x40, 0x18, 0x48, 0x83, 0xC0, + 0x28, 0x48, 0x89, 0x84, 0x24, 0xE0, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x84, + 0x24, 0xE0, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x00, 0x48, 0x89, 0x84, 0x24, + 0x88, 0x00, 0x00, 0x00, 0xEB, 0x13, 0x48, 0x8B, 0x84, 0x24, 0x88, 0x00, + 0x00, 0x00, 0x48, 0x8B, 0x00, 0x48, 0x89, 0x84, 0x24, 0x88, 0x00, 0x00, + 0x00, 0x48, 0x8B, 0x84, 0x24, 0xE0, 0x00, 0x00, 0x00, 0x48, 0x39, 0x84, + 0x24, 0x88, 0x00, 0x00, 0x00, 0x0F, 0x84, 0x2C, 0x03, 0x00, 0x00, 0x48, + 0x8B, 0x84, 0x24, 0x88, 0x00, 0x00, 0x00, 0x48, 0x83, 0xE8, 0x10, 0x48, + 0x89, 0x84, 0x24, 0xC0, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0xC0, + 0x00, 0x00, 0x00, 0x48, 0x83, 0x78, 0x60, 0x00, 0x75, 0x02, 0xEB, 0xB2, + 0x48, 0x8B, 0x84, 0x24, 0xC0, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x40, 0x60, + 0x48, 0x89, 0x44, 0x24, 0x48, 0x48, 0x8D, 0x84, 0x24, 0xA8, 0x00, 0x00, + 0x00, 0x48, 0x89, 0x44, 0x24, 0x40, 0xC6, 0x44, 0x24, 0x30, 0x01, 0xEB, + 0x1C, 0x48, 0x8B, 0x44, 0x24, 0x40, 0x48, 0x83, 0xC0, 0x02, 0x48, 0x89, + 0x44, 0x24, 0x40, 0x48, 0x8B, 0x44, 0x24, 0x48, 0x48, 0x83, 0xC0, 0x02, + 0x48, 0x89, 0x44, 0x24, 0x48, 0x48, 0x8B, 0x44, 0x24, 0x40, 0x0F, 0xB7, + 0x00, 0x85, 0xC0, 0x0F, 0x84, 0xB5, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x44, + 0x24, 0x48, 0x0F, 0xB7, 0x00, 0x85, 0xC0, 0x0F, 0x84, 0xA5, 0x00, 0x00, + 0x00, 0x48, 0x8B, 0x44, 0x24, 0x48, 0x0F, 0xB7, 0x00, 0x83, 0xF8, 0x41, + 0x7C, 0x1E, 0x48, 0x8B, 0x44, 0x24, 0x48, 0x0F, 0xB7, 0x00, 0x83, 0xF8, + 0x5A, 0x7F, 0x11, 0x48, 0x8B, 0x44, 0x24, 0x48, 0x0F, 0xB7, 0x00, 0x83, + 0xC0, 0x20, 0x89, 0x44, 0x24, 0x7C, 0xEB, 0x0C, 0x48, 0x8B, 0x44, 0x24, + 0x48, 0x0F, 0xB7, 0x00, 0x89, 0x44, 0x24, 0x7C, 0x0F, 0xB7, 0x44, 0x24, + 0x7C, 0x66, 0x89, 0x44, 0x24, 0x70, 0x48, 0x8B, 0x44, 0x24, 0x40, 0x0F, + 0xB7, 0x00, 0x83, 0xF8, 0x41, 0x7C, 0x21, 0x48, 0x8B, 0x44, 0x24, 0x40, + 0x0F, 0xB7, 0x00, 0x83, 0xF8, 0x5A, 0x7F, 0x14, 0x48, 0x8B, 0x44, 0x24, + 0x40, 0x0F, 0xB7, 0x00, 0x83, 0xC0, 0x20, 0x89, 0x84, 0x24, 0x80, 0x00, + 0x00, 0x00, 0xEB, 0x0F, 0x48, 0x8B, 0x44, 0x24, 0x40, 0x0F, 0xB7, 0x00, + 0x89, 0x84, 0x24, 0x80, 0x00, 0x00, 0x00, 0x0F, 0xB7, 0x84, 0x24, 0x80, + 0x00, 0x00, 0x00, 0x66, 0x89, 0x44, 0x24, 0x74, 0x0F, 0xB7, 0x44, 0x24, + 0x70, 0x0F, 0xB7, 0x4C, 0x24, 0x74, 0x3B, 0xC1, 0x74, 0x07, 0xC6, 0x44, + 0x24, 0x30, 0x00, 0xEB, 0x05, 0xE9, 0x1F, 0xFF, 0xFF, 0xFF, 0x0F, 0xB6, + 0x44, 0x24, 0x30, 0x85, 0xC0, 0x74, 0x18, 0x48, 0x8B, 0x44, 0x24, 0x40, + 0x0F, 0xB7, 0x00, 0x85, 0xC0, 0x75, 0x0C, 0x48, 0x8B, 0x44, 0x24, 0x48, + 0x0F, 0xB7, 0x00, 0x85, 0xC0, 0x74, 0x05, 0xE9, 0x86, 0xFE, 0xFF, 0xFF, + 0x48, 0x8B, 0x84, 0x24, 0xC0, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x40, 0x30, + 0x48, 0x89, 0x44, 0x24, 0x50, 0x48, 0x8B, 0x44, 0x24, 0x50, 0x48, 0x89, + 0x84, 0x24, 0x08, 0x01, 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0x08, 0x01, + 0x00, 0x00, 0x48, 0x63, 0x40, 0x3C, 0x48, 0x8B, 0x4C, 0x24, 0x50, 0x48, + 0x03, 0xC8, 0x48, 0x8B, 0xC1, 0x48, 0x89, 0x84, 0x24, 0x10, 0x01, 0x00, + 0x00, 0xB8, 0x08, 0x00, 0x00, 0x00, 0x48, 0x6B, 0xC0, 0x00, 0x48, 0x8B, + 0x8C, 0x24, 0x10, 0x01, 0x00, 0x00, 0x48, 0x8D, 0x84, 0x01, 0x88, 0x00, + 0x00, 0x00, 0x48, 0x89, 0x84, 0x24, 0xE8, 0x00, 0x00, 0x00, 0x48, 0x8B, + 0x84, 0x24, 0xE8, 0x00, 0x00, 0x00, 0x83, 0x38, 0x00, 0x75, 0x05, 0xE9, + 0xE1, 0x02, 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0xE8, 0x00, 0x00, 0x00, + 0x8B, 0x00, 0x48, 0x8B, 0x4C, 0x24, 0x50, 0x48, 0x03, 0xC8, 0x48, 0x8B, + 0xC1, 0x48, 0x89, 0x84, 0x24, 0x90, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x84, + 0x24, 0x90, 0x00, 0x00, 0x00, 0x8B, 0x40, 0x20, 0x48, 0x8B, 0x4C, 0x24, + 0x50, 0x48, 0x03, 0xC8, 0x48, 0x8B, 0xC1, 0x48, 0x89, 0x84, 0x24, 0x18, + 0x01, 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0x90, 0x00, 0x00, 0x00, 0x8B, + 0x40, 0x24, 0x48, 0x8B, 0x4C, 0x24, 0x50, 0x48, 0x03, 0xC8, 0x48, 0x8B, + 0xC1, 0x48, 0x89, 0x84, 0x24, 0x20, 0x01, 0x00, 0x00, 0x48, 0x8B, 0x84, + 0x24, 0x90, 0x00, 0x00, 0x00, 0x8B, 0x40, 0x1C, 0x48, 0x8B, 0x4C, 0x24, + 0x50, 0x48, 0x03, 0xC8, 0x48, 0x8B, 0xC1, 0x48, 0x89, 0x84, 0x24, 0x28, + 0x01, 0x00, 0x00, 0xC7, 0x44, 0x24, 0x38, 0x00, 0x00, 0x00, 0x00, 0xEB, + 0x0A, 0x8B, 0x44, 0x24, 0x38, 0xFF, 0xC0, 0x89, 0x44, 0x24, 0x38, 0x48, + 0x8B, 0x84, 0x24, 0x90, 0x00, 0x00, 0x00, 0x8B, 0x40, 0x18, 0x39, 0x44, + 0x24, 0x38, 0x0F, 0x83, 0xC4, 0x00, 0x00, 0x00, 0x8B, 0x44, 0x24, 0x38, + 0x48, 0x8B, 0x8C, 0x24, 0x18, 0x01, 0x00, 0x00, 0x8B, 0x04, 0x81, 0x48, + 0x8B, 0x4C, 0x24, 0x50, 0x48, 0x03, 0xC8, 0x48, 0x8B, 0xC1, 0x48, 0x89, + 0x84, 0x24, 0xF0, 0x00, 0x00, 0x00, 0xC6, 0x44, 0x24, 0x31, 0x01, 0xC7, + 0x44, 0x24, 0x34, 0x00, 0x00, 0x00, 0x00, 0xEB, 0x0A, 0x8B, 0x44, 0x24, + 0x34, 0xFF, 0xC0, 0x89, 0x44, 0x24, 0x34, 0x48, 0x63, 0x44, 0x24, 0x34, + 0x0F, 0xBE, 0x44, 0x04, 0x58, 0x85, 0xC0, 0x75, 0x15, 0x48, 0x63, 0x44, + 0x24, 0x34, 0x48, 0x8B, 0x8C, 0x24, 0xF0, 0x00, 0x00, 0x00, 0x0F, 0xBE, + 0x04, 0x01, 0x85, 0xC0, 0x74, 0x28, 0x48, 0x63, 0x44, 0x24, 0x34, 0x0F, + 0xBE, 0x44, 0x04, 0x58, 0x48, 0x63, 0x4C, 0x24, 0x34, 0x48, 0x8B, 0x94, + 0x24, 0xF0, 0x00, 0x00, 0x00, 0x0F, 0xBE, 0x0C, 0x0A, 0x3B, 0xC1, 0x74, + 0x07, 0xC6, 0x44, 0x24, 0x31, 0x00, 0xEB, 0x02, 0xEB, 0xAB, 0x0F, 0xB6, + 0x44, 0x24, 0x31, 0x85, 0xC0, 0x74, 0x30, 0x8B, 0x44, 0x24, 0x38, 0x48, + 0x8B, 0x8C, 0x24, 0x20, 0x01, 0x00, 0x00, 0x0F, 0xB7, 0x04, 0x41, 0x48, + 0x8B, 0x8C, 0x24, 0x28, 0x01, 0x00, 0x00, 0x8B, 0x04, 0x81, 0x48, 0x8B, + 0x4C, 0x24, 0x50, 0x48, 0x03, 0xC8, 0x48, 0x8B, 0xC1, 0x48, 0x89, 0x84, + 0x24, 0xA0, 0x00, 0x00, 0x00, 0xEB, 0x05, 0xE9, 0x1D, 0xFF, 0xFF, 0xFF, + 0xEB, 0x05, 0xE9, 0xAB, 0xFC, 0xFF, 0xFF, 0x48, 0x83, 0xBC, 0x24, 0xA0, + 0x00, 0x00, 0x00, 0x00, 0x75, 0x05, 0xE9, 0x66, 0x01, 0x00, 0x00, 0x48, + 0x8B, 0x84, 0x24, 0x98, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x40, 0x10, 0x48, + 0x89, 0x84, 0x24, 0xC8, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0xC8, + 0x00, 0x00, 0x00, 0x48, 0x63, 0x40, 0x3C, 0x48, 0x8B, 0x8C, 0x24, 0xC8, + 0x00, 0x00, 0x00, 0x48, 0x03, 0xC8, 0x48, 0x8B, 0xC1, 0x48, 0x89, 0x84, + 0x24, 0xD0, 0x00, 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0xD0, 0x00, 0x00, + 0x00, 0x0F, 0xB7, 0x40, 0x14, 0x48, 0x8B, 0x8C, 0x24, 0xD0, 0x00, 0x00, + 0x00, 0x48, 0x8D, 0x44, 0x01, 0x18, 0x48, 0x89, 0x84, 0x24, 0x30, 0x01, + 0x00, 0x00, 0x48, 0xC7, 0x84, 0x24, 0xF8, 0x00, 0x00, 0x00, 0x40, 0x00, + 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0xC8, 0x00, 0x00, 0x00, 0x48, 0x89, + 0x84, 0x24, 0x00, 0x01, 0x00, 0x00, 0x48, 0x8D, 0x84, 0x24, 0x84, 0x00, + 0x00, 0x00, 0x48, 0x89, 0x44, 0x24, 0x20, 0x41, 0xB9, 0x04, 0x00, 0x00, + 0x00, 0x4C, 0x8D, 0x84, 0x24, 0xF8, 0x00, 0x00, 0x00, 0x48, 0x8D, 0x94, + 0x24, 0x00, 0x01, 0x00, 0x00, 0x48, 0xC7, 0xC1, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0x94, 0x24, 0xA0, 0x00, 0x00, 0x00, 0x85, 0xC0, 0x0F, 0x85, 0xBA, + 0x00, 0x00, 0x00, 0xC7, 0x44, 0x24, 0x3C, 0x00, 0x00, 0x00, 0x00, 0xEB, + 0x0A, 0x8B, 0x44, 0x24, 0x3C, 0xFF, 0xC0, 0x89, 0x44, 0x24, 0x3C, 0x48, + 0x8B, 0x84, 0x24, 0xD0, 0x00, 0x00, 0x00, 0x0F, 0xB7, 0x40, 0x06, 0x39, + 0x44, 0x24, 0x3C, 0x7D, 0x60, 0x48, 0x63, 0x44, 0x24, 0x3C, 0x48, 0x6B, + 0xC0, 0x28, 0x48, 0x8B, 0x8C, 0x24, 0x30, 0x01, 0x00, 0x00, 0x48, 0x03, + 0xC8, 0x48, 0x8B, 0xC1, 0x48, 0x89, 0x84, 0x24, 0xD8, 0x00, 0x00, 0x00, + 0xC7, 0x44, 0x24, 0x78, 0x00, 0x00, 0x00, 0x00, 0xEB, 0x0A, 0x8B, 0x44, + 0x24, 0x78, 0xFF, 0xC0, 0x89, 0x44, 0x24, 0x78, 0x48, 0x63, 0x44, 0x24, + 0x78, 0x48, 0x83, 0xF8, 0x28, 0x73, 0x20, 0x48, 0x8B, 0x84, 0x24, 0xD8, + 0x00, 0x00, 0x00, 0xC6, 0x00, 0x00, 0x48, 0x8B, 0x84, 0x24, 0xD8, 0x00, + 0x00, 0x00, 0x48, 0xFF, 0xC0, 0x48, 0x89, 0x84, 0x24, 0xD8, 0x00, 0x00, + 0x00, 0xEB, 0xCB, 0xEB, 0x84, 0x48, 0x8D, 0x84, 0x24, 0x84, 0x00, 0x00, + 0x00, 0x48, 0x89, 0x44, 0x24, 0x20, 0x44, 0x8B, 0x8C, 0x24, 0x84, 0x00, + 0x00, 0x00, 0x4C, 0x8D, 0x84, 0x24, 0xF8, 0x00, 0x00, 0x00, 0x48, 0x8D, + 0x94, 0x24, 0x00, 0x01, 0x00, 0x00, 0x48, 0xC7, 0xC1, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0x94, 0x24, 0xA0, 0x00, 0x00, 0x00, 0x90, 0x48, 0x81, 0xC4, + 0x48, 0x01, 0x00, 0x00 + + }; + + a.embed(antiDumpShellcode.data(), antiDumpShellcode.size()); + + // Restoring the register context + // Pop flags + a.pop(asmjit::x86::r15); + a.pop(asmjit::x86::r14); + a.pop(asmjit::x86::r13); + a.pop(asmjit::x86::r12); + a.pop(asmjit::x86::r11); + a.pop(asmjit::x86::r10); + a.pop(asmjit::x86::r9); + a.pop(asmjit::x86::r8); + a.pop(asmjit::x86::rdi); + a.pop(asmjit::x86::rsi); + a.pop(asmjit::x86::rbp); + a.pop(asmjit::x86::rbx); + a.pop(asmjit::x86::rdx); + a.pop(asmjit::x86::rcx); + a.pop(asmjit::x86::rax); + + // pop RFLAGS + a.popfq(); + + // Getting new opcodes to insert in place of the old block + std::vector antidump_instructions; + auto& opcodeBuffer = code.sectionById(0)->buffer(); + const auto pOpcodeBuffer = opcodeBuffer.data(); + antidump_instructions.reserve(opcodeBuffer.size()); + + // Storing our new opcodes for antidebug detection + for (auto i = 0; i < opcodeBuffer.size(); ++i) antidump_instructions.push_back(static_cast(pOpcodeBuffer[i])); + + // Saving the opcode block + data.assign(antidump_instructions.begin(), antidump_instructions.end()); isInserted = TRUE; @@ -1649,8 +1846,14 @@ BOOL RyujinObfuscationCore::Run(bool& RyujinRunOncePass) { */ if (RyujinRunOncePass) { + /* + There is no need to obfuscate the anti-dump stub code. the junk code/mutation itself will handle that during processing. + */ this->insertAntiDump(); + // Update our basic blocks context to rela 1-1 for the new obfuscated opcodes. + this->updateBasicBlocksContext(); + RyujinRunOncePass = FALSE; } @@ -1659,7 +1862,9 @@ BOOL RyujinObfuscationCore::Run(bool& RyujinRunOncePass) { if (m_config.m_isAntiDebug) { - // Insert AntiDebug + /* + There is no need to obfuscate the anti-debug stub code. the junk code/mutation itself will handle that during processing. + */ this->insertAntiDebug(); // Update our basic blocks context to rela 1-1 for the new obfuscated opcodes.