diff --git a/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc b/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc index d715cd0..1ec9149 100644 --- a/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc +++ b/RyujinCore/Ryujin/RyujinCore/RyujinObfuscationCore.cc @@ -848,6 +848,253 @@ void RyujinObfuscationCore::insertAntiDebug() { if (!isInserted) { + auto block_info = findBlockId(instr.instruction.info.opcode, instr.instruction.operands[1].imm.value.u, 2, sizeof(unsigned char)); + + if (block_info.first == -1 || block_info.second == -1) continue; + + auto& data = m_proc.basic_blocks[block_info.first].opcodes[block_info.second]; + + asmjit::JitRuntime runtime; + + asmjit::CodeHolder code; + code.init(runtime.environment()); + asmjit::x86::Assembler a(&code); + + // 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); + + /* + Apenas um teste com hello world resolvendo pela PEB para confirmar se vai ser possível inserir a stub oculta para detecção futura + trabalhando na base/pesquisa da capacidade de fazer esse tipo de feature/capacidade. + */ + std::vector shellcode = { + + 0x48, 0x81, 0xEC, 0x88, 0x01, 0x00, 0x00, 0x65, 0x48, 0x8B, 0x04, 0x25, + 0x60, 0x00, 0x00, 0x00, 0x48, 0x89, 0x84, 0x24, 0x10, 0x01, 0x00, 0x00, + 0x48, 0x83, 0xBC, 0x24, 0x10, 0x01, 0x00, 0x00, 0x00, 0x74, 0x0F, 0x48, + 0x8B, 0x84, 0x24, 0x10, 0x01, 0x00, 0x00, 0x48, 0x83, 0x78, 0x18, 0x00, + 0x75, 0x05, 0xE9, 0xE3, 0x07, 0x00, 0x00, 0xB8, 0x6B, 0x00, 0x00, 0x00, + 0x66, 0x89, 0x84, 0x24, 0xF0, 0x00, 0x00, 0x00, 0xB8, 0x65, 0x00, 0x00, + 0x00, 0x66, 0x89, 0x84, 0x24, 0xF2, 0x00, 0x00, 0x00, 0xB8, 0x72, 0x00, + 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xF4, 0x00, 0x00, 0x00, 0xB8, 0x6E, + 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xF6, 0x00, 0x00, 0x00, 0xB8, + 0x65, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xF8, 0x00, 0x00, 0x00, + 0xB8, 0x6C, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xFA, 0x00, 0x00, + 0x00, 0xB8, 0x33, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xFC, 0x00, + 0x00, 0x00, 0xB8, 0x32, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, 0xFE, + 0x00, 0x00, 0x00, 0xB8, 0x2E, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, 0x24, + 0x00, 0x01, 0x00, 0x00, 0xB8, 0x64, 0x00, 0x00, 0x00, 0x66, 0x89, 0x84, + 0x24, 0x02, 0x01, 0x00, 0x00, 0xB8, 0x6C, 0x00, 0x00, 0x00, 0x66, 0x89, + 0x84, 0x24, 0x04, 0x01, 0x00, 0x00, 0xB8, 0x6C, 0x00, 0x00, 0x00, 0x66, + 0x89, 0x84, 0x24, 0x06, 0x01, 0x00, 0x00, 0x33, 0xC0, 0x66, 0x89, 0x84, + 0x24, 0x08, 0x01, 0x00, 0x00, 0xC6, 0x44, 0x24, 0x48, 0x4C, 0xC6, 0x44, + 0x24, 0x49, 0x6F, 0xC6, 0x44, 0x24, 0x4A, 0x61, 0xC6, 0x44, 0x24, 0x4B, + 0x64, 0xC6, 0x44, 0x24, 0x4C, 0x4C, 0xC6, 0x44, 0x24, 0x4D, 0x69, 0xC6, + 0x44, 0x24, 0x4E, 0x62, 0xC6, 0x44, 0x24, 0x4F, 0x72, 0xC6, 0x44, 0x24, + 0x50, 0x61, 0xC6, 0x44, 0x24, 0x51, 0x72, 0xC6, 0x44, 0x24, 0x52, 0x79, + 0xC6, 0x44, 0x24, 0x53, 0x41, 0xC6, 0x44, 0x24, 0x54, 0x00, 0xC6, 0x44, + 0x24, 0x58, 0x47, 0xC6, 0x44, 0x24, 0x59, 0x65, 0xC6, 0x44, 0x24, 0x5A, + 0x74, 0xC6, 0x44, 0x24, 0x5B, 0x50, 0xC6, 0x44, 0x24, 0x5C, 0x72, 0xC6, + 0x44, 0x24, 0x5D, 0x6F, 0xC6, 0x44, 0x24, 0x5E, 0x63, 0xC6, 0x44, 0x24, + 0x5F, 0x41, 0xC6, 0x44, 0x24, 0x60, 0x64, 0xC6, 0x44, 0x24, 0x61, 0x64, + 0xC6, 0x44, 0x24, 0x62, 0x72, 0xC6, 0x44, 0x24, 0x63, 0x65, 0xC6, 0x44, + 0x24, 0x64, 0x73, 0xC6, 0x44, 0x24, 0x65, 0x73, 0xC6, 0x44, 0x24, 0x66, + 0x00, 0xC6, 0x44, 0x24, 0x68, 0x75, 0xC6, 0x44, 0x24, 0x69, 0x73, 0xC6, + 0x44, 0x24, 0x6A, 0x65, 0xC6, 0x44, 0x24, 0x6B, 0x72, 0xC6, 0x44, 0x24, + 0x6C, 0x33, 0xC6, 0x44, 0x24, 0x6D, 0x32, 0xC6, 0x44, 0x24, 0x6E, 0x2E, + 0xC6, 0x44, 0x24, 0x6F, 0x64, 0xC6, 0x44, 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minivm_enter.reserve(opcodeBuffer.size()); + + // Storing each individual opcode in our minivm vector + for (auto i = 0; i < opcodeBuffer.size(); ++i) minivm_enter.push_back(static_cast(pOpcodeBuffer[i])); + + data.assign(minivm_enter.begin(), minivm_enter.end()); + // 1º Inserir a stub que vai carregar o shellcode via stack // 2º usar virtual alloc // 3º criar uma thread escondida do debugger para executar o shellcode com o antidebug ou antidebug + trollreversers