What is the hexadecimal value of NOP instruction?
You are programming a buffer overflow exploit and you want to create a NOP sled of 200 bytes in the program exploit.c
char shellcode[] =
“x31xc0xb0x46x31xdbx31xc9xcdx80xebx16x5bx31xc0”
“x88x43x07x89x5bx08x89x43x0cxb0x0bx8dx4bx08x8d”
“x53x0cxcdx80xe8xe5xffxffxffx2fx62x69x6ex2fx73”
“x68”;
What is the hexadecimal value of NOP instruction?
How many bits does Syskey use for encryption?
Steven the hacker realizes the network administrator of Acme Corporation is using syskey in Windows 2000 Server to protect his resources in the organization. Syskey independently encrypts the hashes so that physical access to the server, tapes, or ERDs is only first step to cracking the passwords. Steven must break through the encryption used by syskey before he can attempt to use brute force dictionary attacks on the hashes. Steven runs a program called “SysCracker” targeting the Windows 2000 Server machine in attempting to crack the hash used by Syskey. He needs to configure the encryption level before he can launch the attack. How many bits does Syskey use for encryption?