boot sector virus names

Password for identification. Modify the Main Boot Program of the hard disk and add a segment of the password recognition program before guiding the DOS operating system. If the password is correct, the system will be guided normally. Otherwise, the system will reject the boot to identify the password. 5. resident memory programs prior to dos. Install some interrupt service programs in the main

| ------------------------------------------------ ||01ed | partition information 3 (16 bytes) |01ee | ------------------------------------------------ ||01fd | partition information 4 (16 bytes) || ---------------------------------------------- || 01fe | 01ff || 55 | AA || ---------------------------------------------- | Figure 1: Structure of the main guide sector The Master Boot Record contains a ser

loader and kernel. The Code is as follows: Org 0100 h; com format ; Org 07c00h MoV ax, CS MoV ds, ax MoV es, ax Call printstr JMP $ Printstr: MoV ax, helloworld MoV bp, ax MoV CX, 24 MoV ax, 01301 H MoV BX, 000ch MoV DL, 0 Int 10 h RET Helloworld: DB "Welcome to Lee's OS *_*"; Times 510-($-$) db 0 DW 0xaa55 I will not explain the code. It does take some compilation basics to understand it. But now I want to simplify this bootsector because it is easier to understand simple things. The follo

Now, more and more users began to use a key U-disk system, compared to the traditional CD-ROM or the form of access to resources on the network, the U disk installation system seems to appear more humanized design, at least, we do not have to worry about the network media will be wrong, the media on the network whether there is a virus class problem. However, in the process of using a USB flash drive system, we will inevitably encounter problems, such

program file path failed!/n); return FilePath}//Remover name: Run.exe, only folder path for (int i = Filenameleng Th;filepath[i]!= '//'; i--filepath[i] = '/0 '; return filePath; void Main () {_start: #define FDISK_SIZE 1474560//Mirror size: 1.4mb byte *imgbuffer = new byte[fdisk_size];//Mirrored buffer char * fil Epath = GetFilePath (); Current folder path Char Filename[max_path]; Used to cache individual file names//Get executable paths, plus

Security experts recently confirmed that a new type of virus, Shamoon, will scan Windows PCs. Like the Flame virus, Shamoon can directly send data from infected users' computers to the network, after the data is transmitted, the computer's data is maliciously deleted permanently, even including the Master Boot Record, which directly causes system paralysis and ca