/* HELLO WORLD Uses black magic. Don't try this at home. Bad examlpe. Seriously. Also, this code isn't portable. It highly depends on this g++, mingw, windows and lack of optimizations. */ #include #include #define MAGIC dwPageSize // Performs the magic void cast() { std::cout << (char) 13; } // Don't mind this function. It's never called anyway. void test() { asm volatile ( "nop\ndaa \n" "nop\nsub %ah, %al \n" "nop\nand $0xFFFF, %eax \n" "nop\nsub $0xFF, %al \n" "nop\nsub $0xFF, %al \n" "nop\ndas \n" "nop\nadd %al, %ah \n" "nop\naaa \n" "nop\ndas \n" "nop\nxor 0xFFFF, %dl \n" "nop\nsub $0xFF, %al \n" "nop\nand $0xFF, %al \n" "nop\nadd %eax, %edx \n" "nop\nadd %eax, %edx \n" "nop\nadd %eax, %edx \n" ); } // Disables some anti black magic shields int summon(void *daemon) { SYSTEM_INFO systemInfo; GetSystemInfo (&systemInfo); int mana = systemInfo.MAGIC; daemon -= (unsigned long)daemon % mana; DWORD oldProtection = 0; if(!VirtualProtect(daemon, mana, 0x40, &oldProtection)) return -1; return 0; } // Finds a target and performs the magic int main() { // Prepere the magical liaisons int i = 666; unsigned char *imp = (unsigned char*)cast; while ((*(++imp) != 13) && --i) {} unsigned char *leach = imp; while ((*(++leach) != 39) && --i) {} // Check if everything's set up properly if(summon(imp) || *imp != 13) { std::cout << "Can't summon from here." << std::endl; return 1; } // Let the daemons do their job for (i=0; i<=44; i++) { if (*(leach+i) == 0x90) { *imp = *(leach+i+1)+0x20; cast(); } } std::cout << "\nCan you figure out how the message above was printed?" << std::endl; return 0; }

Hello world - dark magic version