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标题: 网页脚本解密 [打印本页]

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作者: 韩冰    时间: 2004-11-21 10:39
标题: 网页脚本解密

作者：冰狐浪子　　来自：http://www.icyfoxlovelace.com/

一网友给我一加密网页“太乙奇門六壬排盤程式”，其中脚本采用微软工具进行了加[VBScript.Encode]，说是用解密软件不能解密，我看后发现页面编码是UTF-8,改为ANSI后，使用scrdec顺利解密，看来编码问题有的时候满有用的，对于解密失败的朋友可以尝试看下编码格式，因为现在的解码工具好像是针对ANSI编码的！

附scrdec1.3源代码[c代码]：

/**********************************************************************/ : I2 q o+ [& g$ U8 B# C/* scrdec.c - Decoder for Microsoft Script Encoder */ 6 O0 Y1 ?/ U/ E0 l! N* m( H8 _/* Version 1.3 */ . [' L5 M" A4 z, v( G' w# _/* */ /* COPYRIGHT: */ * a4 W8 G+ W4 z* o0 g1 B/* (c)2000/2001 MrBrownstone, _blank>mrbrownstone@virtualconspiracy.com */ ) S& ^' P) [* O0 w/* Some changes by Joe Steele to correct minor stuff */ / I8 y* ^7 ?9 \8 w2 ~6 A4 y/* */ /* DISCLAIMER: */ /* This program is for demonstrative and educational purposes only. */ 0 N5 A% Q, V9 s# K* @, A) `& v/* Use of this program is at your own risk. The author cannot be held */ /* responsible if any laws are broken by use of this program. */ # Q6 g6 S0 L* M/ J) q9 Q" W/ l/* */ 7 }8 N- ^' K. U' f( G# u& G3 M/* If you use or distribute this code, this message should be held */ /* intact. Also, any program based upon this code should display the */ /* copyright message and the disclaimer. */ /**********************************************************************/

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#include #include #include

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#define LEN_OUTBUF 64 ' U; {! }4 b- {#define LEN_INBUF 1024

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#define STATE_INIT_COPY 100 #define STATE_COPY_INPUT 101 #define STATE_SKIP_ML 102 % x1 S. t- p( |5 H#define STATE_CHECKSUM 103 * F! L4 J0 F- r#define STATE_READLEN 104 6 T6 o9 w ?9 {/ ]/ @0 Q; i#define STATE_DECODE 105 # D: I3 |& d0 ~" c! A#define STATE_UNESCAPE 106 #define STATE_FLUSHING 107 & ]2 H& x& l$ ^. Q0 T# N$ |; u#define STATE_DBCS 108 / k9 c( W/ E* {/ m- B' Q( H ?/ F$ b#define STATE_INIT_READLEN 109

unsigned char rawData[292] = { ' {0 y3 b; j m! p) W: Q$ t 0x64,0x37,0x69, 0x50,0x7E,0x2C, 0x22,0x5A,0x65, 0x4A,0x45,0x72, : k7 I. b' K. B* ?. ] 0x61,0x3A,0x5B, 0x5E,0x79,0x66, 0x5D,0x59,0x75, 0x5B,0x27,0x4C, 0x42,0x76,0x45, 0x60,0x63,0x76, 0x23,0x62,0x2A, 0x65,0x4D,0x43, 2 v/ |- } t7 O1 M3 o 0x5F,0x51,0x33, 0x7E,0x53,0x42, 0x4F,0x52,0x20, 0x52,0x20,0x63, K& ^2 H5 r# {; t 0x7A,0x26,0x4A, 0x21,0x54,0x5A, 0x46,0x71,0x38, 0x20,0x2B,0x79, 0x26,0x66,0x32, 0x63,0x2A,0x57, 0x2A,0x58,0x6C, 0x76,0x7F,0x2B, 5 S! m( d) m0 ]3 c6 a6 { 0x47,0x7B,0x46, 0x25,0x30,0x52, 0x2C,0x31,0x4F, 0x29,0x6C,0x3D, 0x69,0x49,0x70, 0x3F,0x3F,0x3F, 0x27,0x78,0x7B, 0x3F,0x3F,0x3F, 0x67,0x5F,0x51, 0x3F,0x3F,0x3F, 0x62,0x29,0x7A, 0x41,0x24,0x7E, 1 F+ c" X5 c9 w& w/ o% W 0x5A,0x2F,0x3B, 0x66,0x39,0x47, 0x32,0x33,0x41, 0x73,0x6F,0x77, 2 \: g) b- t) x, s" e 0x4D,0x21,0x56, 0x43,0x75,0x5F, 0x71,0x28,0x26, 0x39,0x42,0x78, 9 q7 _) D% g* }+ \8 n, E6 V 0x7C,0x46,0x6E, 0x53,0x4A,0x64, 0x48,0x5C,0x74, 0x31,0x48,0x67, 0x72,0x36,0x7D, 0x6E,0x4B,0x68, 0x70,0x7D,0x35, 0x49,0x5D,0x22, ( e5 w' s' i! f! n! E! [5 V 0x3F,0x6A,0x55, 0x4B,0x50,0x3A, 0x6A,0x69,0x60, 0x2E,0x23,0x6A, 0x7F,0x09,0x71, 0x28,0x70,0x6F, 0x35,0x65,0x49, 0x7D,0x74,0x5C, 0x24,0x2C,0x5D, 0x2D,0x77,0x27, 0x54,0x44,0x59, 0x37,0x3F,0x25, 0x7B,0x6D,0x7C, 0x3D,0x7C,0x23, 0x6C,0x43,0x6D, 0x34,0x38,0x28, 0x6D,0x5E,0x31, 0x4E,0x5B,0x39, 0x2B,0x6E,0x7F, 0x30,0x57,0x36, 0x6F,0x4C,0x54, 0x74,0x34,0x34, 0x6B,0x72,0x62, 0x4C,0x25,0x4E, 8 W- h$ q! L* i" w# V0 h2 k9 C3 M 0x33,0x56,0x30, 0x56,0x73,0x5E, 0x3A,0x68,0x73, 0x78,0x55,0x09, 6 m6 c! f) W$ c 0x57,0x47,0x4B, 0x77,0x32,0x61, 0x3B,0x35,0x24, 0x44,0x2E,0x4D, & X) n: L3 H( c/ A3 a 0x2F,0x64,0x6B, 0x59,0x4F,0x44, 0x45,0x3B,0x21, 0x5C,0x2D,0x37, 3 A- L% D# g+ l, q- F9 H* _ 0x68,0x41,0x53, 0x36,0x61,0x58, 0x58,0x7A,0x48, 0x79,0x22,0x2E, 0x09,0x60,0x50, 0x75,0x6B,0x2D, 0x38,0x4E,0x29, 0x55,0x3D,0x3F, 0x51,0x67,0x2f } ;

const unsigned char pick_encoding[64] = { 1, 2, 0, 1, 2, 0, 2, 0, 0, 2, 0, 2, 1, 0, 2, 0, 1 z- v0 ?- R3 N: I# N1 G1 R1, 0, 2, 0, 1, 1, 2, 0, 0, 2, 1, 0, 2, 0, 0, 2, 1, 1, 0, 2, 0, 2, 0, 1, 0, 1, 1, 2, 0, 1, 0, 2, 4 U9 L( v8 ]& g$ r1, 0, 2, 0, 1, 1, 2, 0, 0, 1, 1, 2, 0, 1, 0, 2 };

unsigned char transformed[3][128]; int digits[0x7b];

unsigned char unescape (unsigned char c) { static unsigned char escapes[] = "#&!*$"; static unsigned char escaped[] = "\r\n<>@"; " g f. o4 L# R7 M4 p# W! [ int i=0;

if (c > 127) return c; $ ?9 T7 h# z( i! o1 [ T while (escapes) { $ c$ }& Z8 B9 f' Z if (escapes == c) return escaped; i++; 7 \0 F; @+ @4 T. r% x3 L } ) \8 ^6 F+ Q/ G m* a* l" i return '?'; }

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void maketrans (void) 6 i* D( D/ t+ K- Q. |6 s+ U{ int i, j;

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for (i=31; i<=127; i++) 3 }- c( `" [% p6 W! Y for (j=0; j<3; j++) transformed[j][rawData[(i-31)*3 + j]] = (i==31) ? 9 : i; }

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作者: 韩冰    时间: 2004-11-21 10:39

void makedigits (void) { int i;

for (i=0; i<26; i++) { ) W+ _3 [$ k. l9 A digits['A'+i] = i; ' C7 z! G6 y$ h0 E: g# P digits['a'+i] = i+26; 2 H5 A9 t1 C3 n& B: K- ^7 S4 u; W Y- C } : `' u( c3 i* J' G( ?" k9 n% O for (i=0; i<10; i++) digits['0'+i] = i+52; , i* A" ?" ~7 B$ n+ ` digits[0x2b] = 62; 3 y% J; |" h. A9 h: e* F digits[0x2f] = 63; 5 H+ E: I- F- [2 g) ]}

unsigned long int decodeBase64 (unsigned char *p) $ d5 H) R8 S5 |4 u{ unsigned long int val = 0;

val += (digits[p[0]] << 2); val += (digits[p[1]] >> 4); ; o& E! C3 {8 a$ G val += (digits[p[1]] & 0xf) << 12; val += ((digits[p[2]] >> 2) << 8); x: G# D* y2 w' f) G% } val += ((digits[p[2]] & 0x3) << 22); val += (digits[p[3]] << 16); % E5 g( f+ W; @ q val += ((digits[p[4]] << 2) << 24); val += ((digits[p[5]] >> 4) << 24);

/* 543210 543210 543210 543210 543210 543210

765432 10 " x1 \+ f( _" ~: f) K: w ba98 % f6 f# T V% t B; Y+ B7 z6 Y# ` fedc ) E( [6 Z- L: Z& H 76 1 k+ u$ q: i- |- G$ D* n( b 543210 , m: a) ^3 E+ T3 R: K5 I fedcba 98---- + O8 L3 |/ A5 l3 _* X) E: h |- LSB -||- -||- -| |- MSB -| % A6 @( A' U/ t Y( ^* e */ return val; 2 y# `. t8 \ n: S0 l}

int isLeadByte (unsigned int cp, unsigned char ucByte) $ ?; I. U: l/ n3 G{ /* Code page 932 - Japanese Shift-JIS - 0x81-0x9f 0xe0-0xfc 936 - Simplified Chinese GBK - 0xa1-0xfe 949 - Korean Wansung - 0x81-0xfe " z, A' a2 z0 w 950 - Traditional Chinese Big5 - 0x81-0xfe 1361 - Korean Johab - 0x84-0xd3 3 X# S$ a% _ I7 s( B6 D* } 0xd9-0xde 0xe0-0xf9 */ switch (cp) { " l1 j' G P: n case 932: ' z, V' m' l. L7 p W8 p/ ?( E if ((ucByte > 0x80) && (ucByte < 0xa0)) return 1; if ((ucByte > 0xdf) && (ucByte < 0xfd)) return 1; else return 0; case 936: ) ^( N+ q; f L, I2 t" ~; Y8 x if ((ucByte > 0xa0) && (ucByte < 0xff)) return 1; ; v5 E. c% E H3 {7 K/ P0 ^4 m else return 0; case 949: 5 R% w$ H, N5 u. C( {9 @* k case 950: / e, r" Q/ y u3 c if ((ucByte > 0x80) && (ucByte < 0xff)) return 1; else return 0; 1 b- ` N* B/ ^/ E; X case 1361: ( z. Z* U# x |- w: n P# h if ((ucByte > 0x83) && (ucByte < 0xd4)) return 1; if ((ucByte > 0xd8) && (ucByte < 0xdf)) return 1; if ((ucByte > 0xdf) && (ucByte < 0xfa)) return 1; ( m' s5 N u' J- K1 ?- u- l else return 0; 0 Q. Y. E: i8 o0 X, J default: + I" @6 P( J$ M3 E& R4 n return 0; }

}

int ScriptDecoder (unsigned char *inname, unsigned char *outname, unsigned int cp) ! m" E4 Q* n; l2 c/ F; @; X! p{ , u9 q' G: v* p/ _' U9 f9 t unsigned char inbuf[LEN_INBUF+1]; ) v8 w. ^; S8 G9 `. l, h unsigned char outbuf[LEN_OUTBUF+1]; unsigned char c, lenbuf[7], csbuf[7]; + J4 x7 k: [, Z/ E, X unsigned char marker[] = "#@~^"; , W3 {, ?4 m# ^2 [! t int nextstate, state = 0; ; e! d" |0 V1 ?# Q int i, j, k, m, ml = 0; ! d5 {6 y% O6 A: z unsigned long int csum = 0, len = 0; 9 x, T( c$ U1 v% {+ Q1 T6 j5 ^" k FILE *infile, *outfile;

infile = fopen (inname, "rb"); ( ?2 m: W# Q4 C- N outfile = fopen (outname, "wb"); : c8 y, ~0 ?5 p if (!infile || !outfile) # i: w$ D3 n- {6 Z { + L% g) f% D! H, [! i printf ("Error opening file!\n"); % X1 x$ R9 H; N0 P return 10; 7 h' W4 t l6 O) ^ } - s4 C7 p: v8 | s+ A maketrans(); makedigits(); memset (inbuf, 0, sizeof (inbuf)); 4 _: i, ^4 l5 v. m! j4 g memset (outbuf, 0, sizeof (outbuf)); ( E, a) I3 i' ?7 S: N memset (lenbuf, 0, sizeof (lenbuf)); state = STATE_INIT_COPY; - e: E( f6 v% P% O) N0 P% a' w i = 0; j = 0;

while (state) % r0 g) H+ `1 A2 U [; y { if (inbuf == 0) ( a6 O/ V/ Z2 _- M1 e6 h+ C# I { if (feof (infile)) 4 p9 `: f) ~1 m! @ break;

memset (inbuf, 0, sizeof (inbuf)); fgets (inbuf, LEN_INBUF, infile); i = 0; continue; }

if (j == LEN_OUTBUF) { fwrite (outbuf, sizeof(char), j, outfile); % E8 e7 z/ k+ m j = 0; $ F+ I5 }7 t/ c# `3 y$ f }

switch (state) { 5 W5 D( X* A0 l3 Q case STATE_INIT_COPY: ml = strlen (marker); 7 h* e% B! Q6 q: g. \5 j' Q% ~ m = 0; $ a3 m" Y8 X J* e% M. Q8 G* Z state = STATE_COPY_INPUT; ; o( G& M$ z4 R* c" B break;

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作者: 韩冰    时间: 2004-11-21 10:40
case STATE_COPY_INPUT: 6 @1 v, a' t+ H0 N0 ?/ R if (inbuf == marker[m]) 3 j# { e5 V) d { i++; / k& x0 L9 F: g6 O m++; } else { if (m) 9 r; T! @6 R) O$ p0 A { k = 0; , M0 k, C' S/ s state = STATE_FLUSHING; 7 ?: m8 K* n9 w% B+ Y: s1 _ } ' r. w* D# [; u7 A else ; c8 l; y! D S( g5 e outbuf[j++] = inbuf[i++];

} if (m == ml) # A$ B8 S/ ?& W! `# a state = STATE_INIT_READLEN; % U: x K& c1 V break;

case STATE_FLUSHING: outbuf[j++] = marker[k++]; m--; if (m==0) ( |) H4 q; l2 U6 B) j5 C4 G state = STATE_COPY_INPUT; ; c1 G+ Y5 Q: n break; ( W, ^4 ^! j& u% J case STATE_SKIP_ML: i++; + O( Y7 w: D' I8 ^ if (!(--ml)) state = nextstate; break;

' Y5 z# o- G- A" i7 w9 |% r8 r/ Y case STATE_INIT_READLEN: ml = 6; state = STATE_READLEN; break;

case STATE_READLEN: , v" R! q& R ^# s lenbuf[6-ml] = inbuf[i++]; 2 f7 m( m/ H% u1 A- Y8 r, [ if (!(--ml)) / I# X- ?) j2 c& Y { len = decodeBase64 (lenbuf); 0 E9 u9 I8 C8 B m = 0; ml = 2; state = STATE_SKIP_ML; nextstate = STATE_DECODE; } break;

case STATE_DECODE: ) I: f2 Z) Z+ o' A4 \* }6 ? if (!len) { 4 V* b8 ^3 W% {( L ml = 6; 0 t0 j: j. [2 ` state = STATE_CHECKSUM; # T, i$ Q, o X% ^) [ break; k6 c1 U, Y* c& F7 U } if (inbuf == _blank>'@') + z" k( I4 g) W( h$ t0 N8 L2 Y state = STATE_UNESCAPE; ; c6 S6 `& q2 q3 p- I else 2 O: y+ b# m" U: r; z( S* k { , |& U+ ^1 S% \/ z5 A- R if (inbuf < 0x80) 0 N7 Z, n7 D' ?) r7 {) j! S1 ^) z { # u s' A" l: { V) @9 @- W outbuf[j++] = c = transformed[pick_encoding[m%64]][inbuf]; ( S) x+ e! V3 \6 J3 A csum += c; m++; } 8 E9 b6 Z( C5 _+ D# {; v else 2 e; h2 `% K& [. q* f { 8 }( s8 g; l6 [" X( h, t outbuf[j++] = inbuf; if ((cp) && (isLeadByte (cp,inbuf))) state = STATE_DBCS; }

} i++; ( F8 I' T: @$ ^7 N I$ V( o len--; . f5 x5 @# y! r, v break;

case STATE_DBCS: 0 [* D7 N. y- J+ W& i1 o outbuf[j++] = inbuf[i++]; 2 E+ J X' ^0 `) C Z" X state = STATE_DECODE; ! P7 M- o' j( V" N8 n break; case STATE_UNESCAPE: outbuf[j++] = c = unescape (inbuf[i++]); csum += c; len--; 0 R# W" R: s# Z) B/ {* \. p4 ~ m++; ' O" A. G5 i- ]0 D6 ^! B+ b U! G state = STATE_DECODE; ' N/ e6 r1 i. P1 y( d8 ^# B break;

case STATE_CHECKSUM: csbuf[6-ml] = inbuf[i++]; ! u; R4 H0 u# H. Y1 L n. m if (!(--ml)) { 2 D3 Y5 L% f# l/ i1 m) w0 d8 w: R csum -= decodeBase64 (csbuf); T K" X# v5 H0 e; ? if (csum) { 1 I, d. m" o3 n/ m) s //printf ("Error - Incorrect checksum! (%lu)\n", csum); //csum=0; 此处注释掉好点，不然好多时候不能解密 嘿嘿 [icyfox] } " _4 r1 S9 {2 w# y- [4 B m = 0; ml = 6; & m3 H* f. z s- F5 G) n* g! d state = STATE_SKIP_ML; nextstate = STATE_INIT_COPY; } break;

default: : J) X0 G: V) U/ a3 ]) ^ printf ("Invalid state: %d\n", state); , y( x2 u c) o break; # Y+ b/ G) J& W( J* ] } ! u# Z. }$ r4 M& |9 G6 b } ( p$ o' W+ Z4 S2 s fwrite (outbuf, sizeof (char), j, outfile); # x' z" c" R1 i, O% o$ t fclose (infile); - K; X9 H, Z$ T% I3 B fclose (outfile); 1 S5 z# g' `: S7 v return 0; 6 m, \9 X* \5 S3 e5 I}

; E% r) y9 T4 q2 O3 lint main (int argc, char **argv) ' v# X# A7 w/ B. N; B" H{ , R- o- n& f8 t3 X int cp = 0;

if (argc < 3) { printf ("Decoder for Microsoft Script Encoder v1.3\n" "(c)2000/2001 MrBrownstone, _blank>mrbrownstone@virtualconspiracy.com\n" "Home page: _blank>http://www.virtualconspiracy.com/scrdec.html\n\n" / k) {8 V1 B& d0 ? "Usage: scrdec13 [codepage]\n\n" ) }- {) S1 E/ D6 U "Code pages can be 932 - Japanese\n" ' F8 f, M# ^+ }, D, K. W% K, M/ d " 936 - Chinese (Simplified)\n" " 950 - Chinese (Traditional)\n" " 949 - Korean (Wansung)\n" " 1361 - Korean (Johab)\n" "Any other code pages don't need to be specified.\n"); return 10; 2 v) I% o6 N9 y3 H( F- o }

if (argc > 3) 4 F6 j5 F: u2 E( @" n9 A9 p cp = atoi (argv[3]); return ScriptDecoder (argv[1], argv[2], cp); }

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