... identifying the start ofthe viral code and FINAL is a label identifying the end ofthe code OFFSET FINAL - OFFSET VIRUS is independent ofthe location ofthe virus in memory 42 TheLittle Black Bookof ... used as the offset from the end ofthe file Since the first thing the virus must is place its code at the end ofthe COM file it is attacking, it sets the file pointer to the end ofthe file ... theLittle Black Book has had five good years as a print publication With the release ofThe Giant Black Bookof Computer Viruses, though, the publisher has decided to take TheLittle Black Book...
... identifying the start ofthe viral code and FINAL is a label identifying the end ofthe code OFFSET FINAL - OFFSET VIRUS is independent ofthe location ofthe virus in memory 42 TheLittle Black Bookof ... used as the offset from the end ofthe file Since the first thing the virus must is place its code at the end ofthe COM file it is attacking, it sets the file pointer to the end ofthe file ... theLittle Black Book has had five good years as a print publication With the release ofThe Giant Black Bookof Computer Viruses, though, the publisher has decided to take TheLittle Black Book...
... identifying the start ofthe viral code and FINAL is a label identifying the end ofthe code OFFSET FINAL - OFFSET VIRUS is independent ofthe location ofthe virus in memory 42 TheLittle Black Bookof ... used as the offset from the end ofthe file Since the first thing the virus must is place its code at the end ofthe COM file it is attacking, it sets the file pointer to the end ofthe file ... theLittle Black Book has had five good years as a print publication With the release ofThe Giant Black Bookof Computer Viruses, though, the publisher has decided to take TheLittle Black Book...
... increase the value ofthe final result Offer solutions the team should achieve List solutions to each ofthe problems you’ve listed, then ask the team to offer alternative ideas At this point in the ... List the problems the team will solve Start with your own list, then ask members to add any other problems they’re aware of Different points of view will help you define the objectives ofthe ... and the giving out of assignments cannot be separated from one another They are part ofthe same process of defining areas of responsibility The person who is given responsibility for a range of...
... that what they put on in the morning is the first thing that people notice about them It tells the world a bit of their story And, more important, their clothes affect how they feel about themselves ... much of my father’s time was spent in the oppressive heat and humidity of Barranquilla, he really seemed infatuated with winter On all of these trips, I learned about the culture, the fashions, the ... Burberry for the British army officers in World War I It was designed keep them warm and dry in the trenches (hence the name), and every element ofthe coat had a purpose The waterproof fabric and...
... theLittle Black Book has had five good years as a print publication With the release ofThe Giant Black Bookof Computer Viruses, though, the publisher has decided to take TheLittle Black Book ... computing Many people think of viruses as sort of a black art The purpose of this volume is to bring them out ofthe closet and look at them matter -of- factly, to see them for what they are, technically ... lies beyond the horizon just because the rulers ofthe day tell you you’re going to fall ofthe edge ofthe world (or they’re going to push you off) if you try to find out Perhaps they are right...
... work with it So the PSP (and whole COM file concept) became a part of DOS The result is that a lot ofthe information stored in the PSP is oflittle 24 TheLittle Black Bookof Computer Viruses ... tutorial on the subject to use along side of this book (A few are mentioned in the Suggested Reading at the end ofthe book. ) In the following chapters, I will assume that your knowledge ofthe technical ... systems of these “other routines.” The author is unconcerned about whether the virus gets killed in action when its logic bomb goes off, so long as the bomb gets deployed effectively The virus then...
... identifying the start ofthe viral code and FINAL is a label identifying the end ofthe code OFFSET FINAL - OFFSET VIRUS is independent ofthe location ofthe virus in memory 42 TheLittle Black Bookof ... used as the offset from the end ofthe file Since the first thing the virus must is place its code at the end ofthe COM file it is attacking, it sets the file pointer to the end ofthe file ... that neither the virus nor the host will ever occupy that space The only safe place to this is at the very end ofthe segment, where the stack resides Since the 46 TheLittle Black Bookof Computer...
... about the size ofthe file, or what is code or data All of this information is stored in the EXE file itself, in the EXE Header at the beginning ofthe file This 54 TheLittle Black Bookof Computer ... for the instruction pointer, ip, when the program is loaded Initial value ofthe code segment relative to the start ofthe code in the EXE file This is modified by DOS at load time Offset ofthe ... checking the file, FILE_OK gets the segment from the Initial cs in the EXE header It uses that with the offset to find the ID word in the load module (provided the virus is there) If the virus...
... or group of sectors from disk and then pass control to them Where that larger file is depends on the operating system In the world of DOS, most ofthe operating 70 TheLittle Black Bookof Computer ... sector works Since the operation of a boot sector is hidden from the eyes of a casual user, and often ignored by books on PC’s, we will discuss them here 68 TheLittle Black Bookof Computer Viruses ... Secondly, there is the main body ofthe virus, which consists of several sectors of code that will be hidden on the disk Thirdly, there is the old boot sector, which will be incorporated into the virus...
... routine moves the virus (this program) to the end ofthe COM file ;Basically, it just copies everything here to there, and then goes and ;adjusts the bytes at the start ofthe program and the five ... called The two responsibilities ofthe viral boot sector are to load the main body ofthe virus into memory, and then to load and execute the original boot sector When the BIOS loads the viral ... create the following batch file (MAKET_T.BAT), along with the 100 TheLittle Black Bookof Computer Viruses above two ASM files, put them all in the same directory, and execute the batch file The...
... loading the first sector ofthe root directory, when ;checking for the existence of system files and loading the first system file ORG DISK_BUF: 0500H DW ? ;Start ofthe buffer ;Here is the start of ... CS:0000, and reading bytes from there Then it compares those bytes with id_check If they’re the same, then the file is infected If the signature is not correct, then the program will also display ... ES:DI pointing to the end ofthe first string in the ;destination (or the first character ofthe second string, after moved) ; CONCAT: mov al,byte ptr es:[di] ;find the end of string inc di or...
... and ;the data area at the beginning ofthe boot sector MOVE_DATA: MOV SI,OFFSET DSKBASETBL ;Move the boot sector code MOV DI,OFFSET DISK_BUF + (OFFSET DSKBASETBL - OFFSET BOOTSEC) MOV CX,OFFSET ... and ;the data area at the beginning ofthe boot sector MOVE_DATA: MOV SI,OFFSET DSKBASETBL ;Move boot sec code after data MOV DI,OFFSET DISK_BUF+(OFFSET DSKBASETBL-OFFSET BOOTSEC) MOV CX,OFFSET ... the buffer ;Location of AA55H in boot sector loaded at ;Here is the start ofthe boot sector code This is the chunk we will take out ;of the compiled COM file and put it in the first sector on...
... from the boot sector parameters what kind of floppy ;disk is in the drive being accessed, and calls the proper infection routine 141 TheLittle Black Bookof Computer Viruses ;to infect the drive ... sector, puts the main body ofthe virus in place, and puts the viral boot sector in Track 0, Head 0, Sector 151 program put_360; TheLittle Black Bookof Computer Viruses {This program puts the stealth ... si ;save these di,OFFSET BOOT ;set up for a compare si,OFFSET SCRATCHBUF + (OFFSET BOOT - OFFSET BOOT_START) si,OFFSET SB_BOOT ;required instead of ^ for A86 ;compare 30 bytes ;restore these ;and...
... integer The methods of moving the pointer are as follows: al=0 moves the pointer relative to the beginning ofthe file, al=1 moves the pointer relative to the current location, al=2 moves the pointer ... Written by the creators ofthe Phoenix BIOS, this book details all ofthe various BIOS functions and how to use them It is a useful complement to the AT Technical Reference, as it discusses how the ... contains all ofthe programs discussed in the book, including the Self-Reproducing Automaton Lab, the Darwinian Genetic Mutation Engine, the Trident Polymorphic Engine, the Intruder-II virus, the Lamark...
... amount of fuel can be transferred from the tank of one plane to the tank of another while the FIG 21 The twiddled bolts planes are in flight The only source of fuel is on the island, and for the ... ofthe problem it is assumed that there is no time lost in refueling either in the air or on the ground What is the smallest number of planes that will ensure the flight of one plane around the ... digital root of If the spectator does not choose the 7, it is added to the deck, making a total of 44 cards The packet now has an on top, and is the digital root of 44 In other words, the card selected...
... RICHARD L ALLEN, In the Clerk's Office ofthe District Court ofthe United States for the Southern District of New York INTRODUCTION The object ofthe following work, on the History, Breeding, ... States, their progress during the various stages of their improvement, and the comparative value ofthe improved and ordinary breeds A knowledge ofthe best mode of breeding and management is of still ... determining on the particular breed, either of cattle or sheep, that will best promote the interest ofthe farmer The kind of work for which the horse may be wanted, whether as a roadster, for the saddle,...
... and other Poems' was first published in 1862, 'The Prince's Progress and other Poems' was first published in 1866 In 'The World's Classics' the contents of these two books, together with other ... Grey 'By the Waters of Babylon' Seasons Mother Country A Smile and a Sigh Dead Hope Autumn Violets 'They Desire a Better Country' The Offering ofthe New Law Conference between Christ, the Saints, ... both were wives With children of their own; Their mother-hearts beset with fears, Their lives bound up in tender lives; Laura would call thelittle ones And tell them of her early prime, Those pleasant...
... mingled the exhalations ofthe factories ofthe outskirts and the heavy breath ofthe town He could not see ten yards in front of him The light ofthe gas-jets flickered like a candle on the point of ... outside a book- shop, and he stared stupidly at the rows of books He was struck by the name of a publisher on the cover of one of them He wondered why Then he remembered that it was the name ofthe ... moment The Bible had belonged to his grandfather and to his grandfather's father The heads ofthe family had inscribed on a blank page at the end their names and the important dates of their lives—births,...