---- CMOS (Award) Password Introduction and Crack 0-3 Method ---- When the computer is started, the CMOS data is transferred into the memory by the BIOS stored in the motherboard ROM to implement the control system. Among them, a small RAM on the Award Motherboard is used to store CMOS data, and addresses in a total of 128 bytes of 00-7F. The bytes 1c and 1D are stored in the CMOS password (ie Supervisor Password). It is of course that lithium battery in maintaining CMOS data survival. Port 70h, 71h is used to read and write to CMOS data. 0 - >> Not a method 0- Universal type is also the most bad: pull the battery or jumper (discharge)! ! --- A bird break system password? 1 - >> Crack method 1 - Tveiling: Enter DOS, use Debug -o 70 -o 71 01 -q, you can directly enter CMOS, no The password query. This method is to re-recover the CMOS chip data to the default factory value by writing to the CMOS chip, causing its parity when the power is detected. ! ! Ugh. . . . ! ! ! It's hard, set the CMOS parameters, which is destroyed in Debug, 55555555555 ~~~~~ Don't cry, don't cry, see the following two methods are OK - >> Method 2: Of course, it is programming implementation喽 First, statement: This program "Algorithm" is not I preparation, the original author Unkown specific operation is as follows: OUTPORTB (0x70, i); write the I-byte data to port 70 cmospass = _inp (0x71); will 71 The port data reads out to the terminal and stores the variable cMospass program to read the data of the two bytes 0x1c, 0x1d, and converted into four-way, combined into 8 bits ---- (Award motherboard fragile) Encryption method, no wonder I only hear the crack of the Award password ...
