This code was unobfuscated. (see Listing8.txt) 0x41F523: 0F31 RDTSC 0x41F525: 50 PUSH EAX 0x41F526: E800000000 CALL 0x41F52B 0x41F52B: 810424CA090000 ADD DWORD PTR [ESP],0x9CA 0x41F532: 64FF3500000000 PUSH DWORD PTR [DWORD PTR FS:[0x0] 0x41F539: 64892500000000 MOV DWORD PTR FS:[0x0],ESP 0x41F540: 33DB XOR EBX,EBX 0x41F542: 8B1B MOV EBX,DWORD PTR [EBX]