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ÏÂÃæÒÔHyperSnap-DX 5.60ΪÀý£¬Õâ¸öÊÇarm3.70a¼ÓµÄ¿Ç£¬µ¥½ø³Ì£¬ÓÃÁËÊäÈë±íÂÒÐòºÍÔ¶µØÖ·Ìøת¡£HyperSnap-DX 5.61ÒѾÊÇË«½ø³ÌCC¿ÇÁË£¬»¹²»¸ÒÅö£¬:(
µÚ1²¿·Ö£º×¼±¸¹¤×÷&µÖ´ïOEP
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1. OEP
Éè¶Ïµãhe SetProcessWorkingSetSize¶ÏϺóÔÙÉè¶Ïµãhe GetCurrentThreadId
¶ÏϺó,Ctrl+F9·µ»Ø£¬È¥³ýÕâÁ½¸ö¶Ïµã£¬ÏòÏ¿´£¬¿´µ½ÄǸöcall ediÁËû£¬ÔÚ°´F2ÄÇÀïÉè¸ö¶Ïµã
¶ÏϺó£¬F7¸úÈ룬¾ÍÀ´µ½OEPÁË
¼Çס£º OEP=004E8850
2. magicjump
ºÃ¼¸¸öµØ·½ÐÞ¸ÄÌøת¶¼¿ÉÒÔ·ÅÖÃarmÆÆ»µÊäÈë±íµÄ£¬¶¼¿ÉÒÔ³Æ֮Ϊmagicjump
À´¿´arm´¦ÀíÊäÈë±íµÄÁ÷³Ì
ÏȽ«Ò»Ð©Ô¤ÉèµÄapi¾¹ý´¦Àí
È»ºóÔÚ¶ÁÈëÊäÈë±íʱºò£¬±È½ÏapiÃû³ÆÊÇ·ñΪ¿ÇÖд¦Àí¹ýµÄapiÃû³Æ
Èç¹ûÏàͬÔò½«¸ÃµØÖ·Ö¸Ïò¿ÇÖеĺ¯ÊýµØÖ·£¬³ÌÐòËùµÃµ½µÄµØÖ·¾ÍÖ¸Ïò¿ÇÀïÁË,importRec¾Íʶ±ð²»³ö¸Ã
apiÁË
Õâ¸öËäÈ»´úÂë±È½Ï³¤£¬²»¹ýÁ÷³Ì»¹ËãÇå³þ£¬¿ÉÒÔ¸úÉϼ¸±é¾Í´ó¸ÅÖªµÀÊÇÔõô»ØÊÂÁË
ÒòΪÏà¹ØÎÄÕ±Ƚ϶࣬ÕâÀï¼òµ¥¿´Ò»ÏÂ
00DC96FD 8D85 B4FEFFFF LEA EAX,DWORD PTR SS:[EBP-14C]
00DC9703 50 PUSH EAX
00DC9704 FF15 C8B0DE00 CALL DWORD PTR DS:[DEB0C8] ;
kernel32.GetModuleHandleA
00DC970A 8B0D C04CDF00 MOV ECX,DWORD PTR DS:[DF4CC0]
00DC9710 89040E MOV DWORD PTR DS:[ESI+ECX],EAX
00DC9713 A1 C04CDF00 MOV EAX,DWORD PTR DS:[DF4CC0]
00DC9718 393C06 CMP DWORD PTR DS:[ESI+EAX],EDI
00DC971B 75 16 JNZ SHORT 00DC9733
00DC971D 8D85 B4FEFFFF LEA EAX,DWORD PTR SS:[EBP-14C]
00DC9723 50 PUSH EAX
00DC9724 FF15 D0B0DE00 CALL DWORD PTR DS:[DEB0D0] ;
kernel32.LoadLibraryA
00DC972A 8B0D C04CDF00 MOV ECX,DWORD PTR DS:[DF4CC0]
00DC9730 89040E MOV DWORD PTR DS:[ESI+ECX],EAX
00DC9733 A1 C04CDF00 MOV EAX,DWORD PTR DS:[DF4CC0]
00DC9738 393C06 CMP DWORD PTR DS:[ESI+EAX],EDI
00DC973B 0F84 AD000000 JE 00DC97EE //magicjump ¼Ç¼¸ÃµØÖ·
Öµ
00DC9741 33C9 XOR ECX,ECX
Èç¹ûÊÇdll¿ÉÄÜ»¹ÐèÒª¸ü¸ÄÕâ¸öµØÖ·£¬odÔØÈëdll»ùµØַΪ10000000£¬¶øÊäÈë±íÔڸõØÖ·ÒÔÏÂ
Ôì³ÉÔÚImportRecÉè²»ÁËIAT RVAµØÖ·
00DE489D 8B85 1CE8FFFF MOV EAX,DWORD PTR SS:[EBP-17E4] //±£´æµ±Ç°IATÖ¸Õë
00DE48A3 8B8D 80E2FFFF MOV ECX,DWORD PTR SS:[EBP-1D80]
00DE48A9 8908 MOV DWORD PTR DS:[EAX],ECX //Ò»¸öapiµØַдÈëIAT
00DE48AB 8B85 1CE8FFFF MOV EAX,DWORD PTR SS:[EBP-17E4]
00DE48B1 83C0 04 ADD EAX,4
00DE48B4 8985 1CE8FFFF MOV DWORD PTR SS:[EBP-17E4],EAX
¶Ô[EBP-17E4]À´ÉèÄÚ´æд¶Ïµã£¬¿ÉÒÔÕÒµ½ÕâÀï
00DE453B 8B8D F0E6FFFF MOV ECX,DWORD PTR SS:[EBP-1910] //±£´æIATµÄÊ×µØÖ·£¬¼Ç¼
¸ÃµØÖ·Öµ00E9A880
00DE4541 8D0481 LEA EAX,DWORD PTR DS:[ECX+EAX*4]
00DE4544 8985 1CE8FFFF MOV DWORD PTR SS:[EBP-17E4],EAX //ÔØÈëÏÂÒ»¸ödllµÄIATÖÐ
Ê×µØÖ·
3.antidump
OD°ÑÔ´úÂëÖÐһЩ´úÂ룬jmp½Ï¸ßµÄµØÖ·ÁË Èçjmp 03171000,Ôì³Élordpe dumpÎļþʱºò£¬Õâ¶Î´úÂ붪
ʧ£¬
¸ÃµØÖ·ÊDz»Êǹ̶¨µÄ¡£
¿ÉÒÔÖ±½Ó϶ÏVirtualAlloc£¬²é¿´ÉêÇëµØÖ·Öµ£¬Èç¹û±È½Ï´ó¾ÍÐèҪעÒâÁË£¬·µ»Øºó´úÂëÀàËÆÏÂÃæ
00DE2612 6A 40 PUSH 40
00DE2614 68 00200000 PUSH 2000
00DE2619 FFB5 70E6FFFF PUSH DWORD PTR SS:[EBP-1990]
00DE261F FF35 3092DF00 PUSH DWORD PTR DS:[DF9230]
00DE2625 FF15 A0B1DE00 CALL DWORD PTR DS:[DEB1A0] ;
kernel32.VirtualAlloc
00DE262B 8985 78E6FFFF MOV DWORD PTR SS:[EBP-1988],EAX
00DE2631 83BD 78E6FFFF 0>CMP DWORD PTR SS:[EBP-1988],0
00DE2638 74 33 JE SHORT 00DE266D
00DE263A 6A 40 PUSH 40
00DE263C 68 00100000 PUSH 1000
00DE2641 FFB5 70E6FFFF PUSH DWORD PTR SS:[EBP-1990]
00DE2647 FF35 3092DF00 PUSH DWORD PTR DS:[DF9230]
00DE264D FF15 A0B1DE00 CALL DWORD PTR DS:[DEB1A0] ;
kernel32.VirtualAlloc
00DE2653 8985 78E6FFFF MOV DWORD PTR SS:[EBP-1988],EAX //±£´æcodesplit Ê×µØ
Ö· ÔÚÕâÀï¶ÏÏÂÐÞ¸ÄeaxÖµµ½Ò»½ÏµÍµØÖ·ÎÒÑ¡Ôñдµ½armµÄadata½Ú
00DE2659 83BD 78E6FFFF 0>CMP DWORD PTR SS:[EBP-1988],0
00DE2660 74 0B JE SHORT 00DE266D
¼Ç¼CodeSplit addr=00DE2653
4. Óýű¾À´×ßµ½OEP
ÒòΪҪÐ޸ĵĵط½±È½Ï¶à£¬¶øÇÒºóÃæÎÒÃǵ÷ÊԽű¾ÄÑÃâÒªÖظ´¹¤×÷£¬ËùÒÔ»¹ÊÇд¸öod½Å±¾°É£¬¿ÉÒÔ½ÚÊ¡µãÌåÁ¦ :)
ÒòΪҪÏòrdata¶ÎдIATÊý¾Ý£¬ËùÒÔÏȽ«¸Ã¶ÎÄÚ´æÉèΪ¿Éд
Memory´°¿ÚÑ¡ÖиöΣ¬ÓÒ¼üset access ->full access
´úÂë:
//½Å±¾1£¬Ö±´ïOEP£¬Ë³±ã´¦ÀímagicjumpºÍantidump var NewIatHead var NewSplitCodeHead var SetIatHead var SetSplitCodeHead var IatOver var MagicJmp var OEP var bSplitCodeOver var bIatOver var pTempAddr var VirtualAlloc //ÐèÒªÌîÈëµÄÐÅÏ¢ÄÚÈÝ mov NewIatHead, 5CA000 mov NewSplitCodeHead, 674000 mov MagicJmp, 00DC973B mov SetIatHead, 00DE453B mov IatOver, 00DE498E mov SetSplitCodeHead, 00DE2653 mov OEP, 004E8850 //±äÁ¿³õʼ»¯ mov bIatOver, 0 mov bSplitCodeOver, 0 //»ñµÃVirtualAllocÊ×µØÖ· gpa "VirtualAlloc", "kernel32.dll" mov VirtualAlloc, $RESULT BPHWS VirtualAlloc, "x" run BPHWC VirtualAlloc //´Ëʱ£¬¿ÇÄÚ´æ´úÂëÒÑ·ÖÅä //¿ªÊ¼Éè¶Ïµã BPHWS MagicJmp, "x" //magicjumpÖ®´¦ //BPHWS 00994704, "x" дÈëÄÚ´æʱ BPHWS SetIatHead, "x" //ÔØÈëÊäÈë±íÊ×µØַʱºò BPHWS IatOver, "x" //´¦ÀíÍêËùÓÐdll BPHWS SetSplitCodeHead, "x" //ÉêÇë¸ßλÄÚ´æ´¦£¬Ðè¸ü¸Ä·µ»ØeaxΪһ¶ÎµÍλÄÚ´æ eoe _Exception eob _Break run //ÓöÀýÍâ¼ÌÐøÖ´ÐÐ _Exception: esto //´¦Àí¶ÏµãÖÐ¶Ï _Break: cmp eip, SetIatHead je _SetIatHead cmp eip, MagicJmp je _MagicJmp cmp eip, IatOver je _IATOver cmp eip, SetSplitCodeHead je _SetSplitCodeHead jmp _InvalidBreak //ÉèÖÃеÄIATÊ×µØÖ· /* 00DE453B 8B8D F0E6FFFF MOV ECX,DWORD PTR SS:[EBP-1910] //±£´æIATµÄÊ×µØÖ· 00DE4541 8D0481 LEA EAX,DWORD PTR DS:[ECX+EAX*4] 00DE4544 8985 1CE8FFFF MOV DWORD PTR SS:[EBP-17E4],EAX //µ±Ç°IATÖ¸Õë */ _SetIatHead: mov pTempAddr, ebp sub pTempAddr, 1910 //¿´ÉÏÃæÊý¾Ý mov [pTempAddr], NewIatHead log NewIatHead BPHWC SetIatHead run //ÐÞ¸Ämagicjump, À´µÃµ½ÔʼµÄIAT _MagicJmp: mov !ZF, 1 //ÐÞ¸Ämagicjump run //maigcjump´¦ÀíÍê±Ï _IATOver: BPHWC MagicJmp BPHWC IatOver mov bIatOver, 1 cmp bSplitCodeOver,1 je _FixOver run //ÉèÖÃеı£´æCodeSplit´úÂëµÄÊ×µØÖ· /* 00DE263A 6A 40 PUSH 40 00DE263C 68 00100000 PUSH 1000 00DE2641 FFB5 70E6FFFF PUSH DWORD PTR SS:[EBP-1990] 00DE2647 FF35 3092DF00 PUSH DWORD PTR DS:[DF9230] 00DE264D FF15 A0B1DE00 CALL DWORD PTR DS:[DEB1A0] ; kernel32.VirtualAlloc 00DE2653 8985 78E6FFFF MOV DWORD PTR SS:[EBP-1988],EAX //±£´æantidumpÊ×µØÖ· 00DE2659 83BD 78E6FFFF 0>CMP DWORD PTR SS:[EBP-1988],0 00DE2660 74 0B JE SHORT 00DE266D */ _SetSplitCodeHead: mov eax, NewSplitCodeHead mov bSplitCodeOver, 1 BPHWC SetSplitCodeHead cmp bIatOver,1 je _FixOver run //ÆäËüδ´¦ÀíµÄ¶Ïµã _InvalidBreak: log eip msg "Invalid Break" ret //IAT,AntiDump´¦ÀíÍê±Ï //×¼±¸ÌøÍùOEP _FixOver: eoe _Continue eob _End BPHWS OEP, "x" run _Continue: esto _End: BPHWC OEP msg "Success!" ret
µÚ2²¿·Ö. ÐÞ¸´IATÂÒÐò
1, ¹ØÓÚIATÂÒÐò
arm´Ó3.60¿ªÊ¼Ìí¼ÓÁËÐµĹ¦ÄÜÊäÈë±íÂÒÐò(ImportTable Elimination)
ÔÙÎÒÃÇÐÞ¸ÄÁËmagicjmpºóµÃµ½Æ¯ÁÁµÄIAT, ¿ÉϧÂíÉϾͱ»arm¸øÆÆ»µÁË£¬½«Ë³Ðò´òÂÒ£¬¶øÇÒËã·¨ÓÐЩ¸´
ÔÓ£¬²»ºÃ·´Çó¡£
00DE498E 8B85 FCE6FFFF MOV EAX,DWORD PTR SS:[EBP-1904] //ÉÏÃæµÄ½Å±¾ÖÐIatOver
µØÖ·
00DE4994 8985 F4CFFFFF MOV DWORD PTR SS:[EBP-300C],EAX
00DE499A FFB5 F4CFFFFF PUSH DWORD PTR SS:[EBP-300C]
00DE49A0 E8 855E0000 CALL 00DEA82A ; JMP to msvcrt.??
3@YAXPAX@Z
00DE49A5 59 POP ECX
00DE49A6 83BD F0E6FFFF 0>CMP DWORD PTR SS:[EBP-1910],0
...
00DE4AA2 8985 64E1FFFF MOV DWORD PTR SS:[EBP-1E9C],EAX
00DE4AA8 8B85 60E1FFFF MOV EAX,DWORD PTR SS:[EBP-1EA0]
00DE4AAE 8D0485 04000000 LEA EAX,DWORD PTR DS:[EAX*4+4]
00DE4AB5 50 PUSH EAX
00DE4AB6 8B85 F0E6FFFF MOV EAX,DWORD PTR SS:[EBP-1910]
00DE4ABC 83C0 04 ADD EAX,4
00DE4ABF 50 PUSH EAX
00DE4AC0 FFB5 F0E6FFFF PUSH DWORD PTR SS:[EBP-1910]
00DE4AC6 FF15 D4B2DE00 CALL DWORD PTR DS:[DEB2D4] ; msvcrt.memmove //
½«IATÏòÇ°Ñ»·Òƶ¯2¸öDWORD£¬´òÂÒIAT
00DE4ACC 83C4 0C ADD ESP,0C
00DE4ACF 8B85 60E1FFFF MOV EAX,DWORD PTR SS:[EBP-1EA0]
00DE4AD5 8B8D F0E6FFFF MOV ECX,DWORD PTR SS:[EBP-1910]
00DE4ADB 8B95 64E1FFFF MOV EDX,DWORD PTR SS:[EBP-1E9C]
00DE4AE1 891481 MOV DWORD PTR DS:[ECX+EAX*4],EDX
00DE4AE4 ^ E9 47FFFFFF JMP 00DE4A30
ʹµÃÎÒÃÇÔÚImportRecÖп´µ½ÕâÑùÅÅÁеÄIAT£¬´Ó¶øÎÞ·¨Éú³ÉеÄÊäÈë±í
1 001CA0D0 kernel32.dll 01A7 GetProfileIntA
1 001CA0D4 comctl32.dll 002B ImageList_AddMasked
1 001CA0D8 user32.dll 005B CreateIconIndirect
1 001CA0DC user32.dll 00F7 GetClassInfoA
1 001CA0E0 gdi32.dll 01CE LineTo
1 001CA0E4 user32.dll 008F DefWindowProcA
1 001CA0E8 kernel32.dll 015C GetFileSize
1 001CA0EC gdi32.dll 01BA GetTextFaceA
1 001CA0F0 gdi32.dll 01C3 GetWindowExtEx
2. ÕûÀíIAT
ÔÚRicardo NarvajaµÄ203-208½Ì³ÌÖиø³öÁËÒ»¸öºÜ½Å±¾£¬ÓÃÀ´ÕûÀíIAT£¬Éú³ÉÒ»¸öеÄÅÅÁÐÕûÆëµÄIAT,
ÔÀ´µÄIATÖеĵØÖ·ÖµÔò¸ÄΪָÕëÖ¸ÏòÕâ¸öÐÂIAT±íÖеÄÏÕâ¸ö½Å½Å±¾ËµÃ÷²Î¼ûRicardoµÄ207½Ì³Ì¡£ÀïÃæÌøתÓеã¶à£¬ÎÒ¹ÀÃþ׿ÓÁ˵ã×¢ÊÍ¡£
¾ÙÀý
ÔÏÈIATÖÐÒ»ÏîΪ
005CA000 45 2D E1 77 E-áw½ñ
ÔÚÔËÐнű¾ºó
005CA000 D0 AD 5C 00 Ð\.Œ°
005CADD0 45 2D E1 77 E-áwp
µ±È»ÕâÑù×öÒÔºó£¬callËùµ÷ÓõĵØÖ·¾Í²»¶ÔÁË
call [005CA000] // 77E12D45call Kernel32.SetUnhandledExceptionFilter
¹Ê¶øRicardo ÔÚOEP´¦²åÈëÁËÒ»¶Î³ÌÐòÀ´£¬½«ÅÅÁкõÄIAT£¬Ôٴλ¹Ôµ½ÔÏÈ´òÂÒµÄ״̬£¬²»¹ýÕâÑù³ö
À´µÄ³ÌÐòÔÚ¾²Ì¬·´±àÒëʱ£¬º¯Êý»áʶ±ð²»³ö£¬²»±ãÓÚ·ÖÎö¡£
ÔÚÏÂÃæ1½Ú½«»á²ÉÓÃÒ»¶Î½Å±¾À´´¦ÀíÕâ¸öÎÊÌâ
ÔÚOEP´¦ÔËÐÐ
´úÂë:
//½Å±¾2£¬½«ARM»ìÂÒµÄIATÖØÐÂÕûÀí //À´×ÔRicardo NarvajaµÄ207ºÅ½Ì³Ì£¬ÂÔ×öÐÞ¸Ä var it var it2 var x var y var pit var pit2 var dll var dll1 var pitt var it1_end var base var savecode //ÐèÒªÉ趨µÄÄÚÈÝ mov it,5CA000 //»ìÂÒIATÊ×Ö· mov it1_end,5CAD90 //»ìÂÒIATÄ©Ö· mov it2,5CADD0 //´ý´æ·ÅÕûÀíºóµÄIATÊ×Ö· // mov savecode,[eip] //±£´æµ±Ç°eipÖ¸ÏòÄÚÈÝ mov [eip], #EBFE# //jmp eip£¬ÓÉÓÚÕûÀíIAT±È½ÏÂý£¬ÓÃÓÚ´ý»áˢнçÃ棬·À½çÃæ¼ÙËÀ gmi eip, MODULEBASE //È¡Ö÷ÎļþµÄ»ùÖ· log $RESULT mov base,$RESULT INICIO: //³õʼ»¯ mov pitt,it //pittÖ¸Ïòµ±Ç°ÕýÔÚ´¦ÀíapiµØÖ·£¬ÆäÇ°ËùÓÐapi¾ù±»´¦ÀíÍê±Ï //pittÿһÂÖÔö¼Ó4£¬µ±ÆäµÈÓÚ»ìÂÒºóIATĩַʱ£¬Ôò¸Ã½Å±¾ÔËÐнáÊø COMIENZO: add pit,it add pit2,it2 SEGUIMOS: //WE FOLLOWED еÄÑ»·¿ªÊ¼ add pit,x add pit2,y cmp pit,it1_end log pit log x log y je FIN cmp pit,it1_end ja FIN gmi [pit], MODULEBASE //È¡¸Ãapi¶ÔÓ¦µÄÄ£¿é»ùÖ· log $RESULT log dll1 cmp pit,pitt jne NOPRIMERA cmp $RESULT,base //¸ÃµØÖ·´¦api,ÊÇ·ñÒѱ»´¦Àí¹ý£¬Èô±»´¦Àí¹ýÔòÆä»ùַΪÖ÷Îļþ»ùÖ·base je PIRULO //´¦Àí¹ýÔòÌøתµ½ÏÂÒ»ÂÖ cmp $RESULT,dll1 //ÕâÁ½¾äºÃÏñûÓã¬Èç¹ûÇ°1¸ödllÒѱ»´¦Àí¹ý£¬ÕâÀï¸ù±¾²»»áÌøת je IGUALES mov dll, $RESULT log dll jmp NOPRIMERA NOPRIMERA: //not first cmp $RESULT,dll jne NOGUARDO //¸ÃµØÖ·´¦api,ÊÇ·ñÒѱ»´¦Àí¹ý£¬Èô±»´¦Àí¹ýÔòÆä»ùÖ· //ÀýÈç,´¦Àíºó¸Ã005CA000´¦ÄÚÈÝΪ005CADD0£¬È¡Æä¶ÔӦģ¿é»ùַΪΪÖ÷Îļþ»ùÖ·base cmp $RESULT,base je NOGUARDO //´¦Àí¹ýÔòÌøתµ½ÏÂÒ»ÂÖ mov [pit2], [pit] //½«»ìÂÒºóIAT±£´æapiÒÆÈëеØÖ·£¬ÔµØÖ·´æ·ÅÖ¸ÕëÖ¸ÏòеØÖ· mov [pit], pit2 mov x,4 mov y,4 jmp FINLOOP NOGUARDO: //I do not keep mov x,4 mov y,0 jmp FINLOOP FINLOOP: //1ÂÖСѻ·½áÊø log pit log pit2 jmp SEGUIMOS IGUALES: //EQUAL ûɶÓã¿ mov x,4 mov y,0 jmp FINLOOP FIN: //1¸ödll´¦ÀíÍê±Ï mov [pit2],0 mov dll1,dll sto //·À½çÃæ¼ÙËÀ£¬Ë¢ÐÂod½çÃæ xor x,x xor y,y add pitt,4 cmp dll,base je SALTO add pit2,4 SALTO: //JUMP mov pit,pitt cmp pitt,it1_end je FINISH cmp pitt,it1_end ja FINISH log pit log pit2 log pitt jmp SEGUIMOS FINISH: //ËùÓÐdll¶¼Òѱ»´¦ÀíÍê±Ï mov [eip],savecode //±£´æµ±Ç°eipÖ¸ÏòÄÚÈÝ MSG "TERMINAMOS" log pitt ret PIRULO: //¸ÃµØÖ·apiËùÔÚdllÒѱ»´¦Àí¹ý£¬¹ÊÌø¹ý¸ÃµØÖ·£¬ÖØпªÊ¼Ò»ÂÖ add pitt,4 jmp NOPRIMERA
3. ÐÞ¸´´úÂë¶Îµ÷ÓÃ
ÔÚRicardoµÄ½Ì³ÌÖÐÔÚOEP´¦²åÈëÁËÒ»¶Î³ÌÐòÀ´£¬½«ÅÅÁкõÄIAT£¬Ôٴλ¹Ôµ½ÔÏÈ´òÂÒµÄ״̬£¬²»¹ýÕâ
Ñù³öÀ´µÄ³ÌÐòÔÚ·´±àÒëʱ£¬²»ÄÜ×Ô¶¯Ê¶±ð³öµ÷Óõĺ¯Êý£¬ÆÄΪ²»Ë¬¡£
ÎÒÃÇÀ´Ïë°ì·¨À´½â¾öÕâ¸öÎÊÌâ¡£
ÎÒÃÇÔÚ³ÌÐòÖÐËæ±ãÕÒÒ»¸öapiµ÷Ó㬱ÈÈçÕâ¸ö
004E8873 8965 E8 MOV DWORD PTR SS:[EBP-18],ESP
004E8876 FF15 E4AC5C00 CALL DWORD PTR DS:[5CACE4] ;
kernel32.GetVersion
004E8876 FF 15 64 B5 E9 00 ÿdµé.3
ÉèÓ²¼þдDWORD¶Ïµã004E8878£¬À´¿´¿´¿ÇÊÇʲôʱºòÔÚ´úÂë¶ÎдÈëµÄ¸ÃapiµØÖ·
ÖØÐÂÔËÐгÌÐò£¬µÚ1´Î¶ÏÏÂʱÊÇ´úÂë¶Î½âѹ£¬ÔÚµÚ¶þ´Î¶ÏÏÂʱºò
00DE553A 8B85 E4D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F1C]
00DE5540 40 INC EAX
00DE5541 8985 E4D0FFFF MOV DWORD PTR SS:[EBP-2F1C],EAX
00DE5547 8B85 E4D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F1C]
00DE554D 8B8D 30E8FFFF MOV ECX,DWORD PTR SS:[EBP-17D0] //±£´æcallµ÷ÓñíÊ×µØÖ·
00E9B628 ÔÚÕâÀï²é¿´±í¸ñÊ×µØÖ·
00DE5553 833C81 00 CMP DWORD PTR DS:[ECX+EAX*4],0 //È¡±íÖÐ1Ïî
00DE5557 0F84 90000000 JE 00DE55ED
00DE555D 8B85 E4D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F1C]
00DE5563 8B8D 30E8FFFF MOV ECX,DWORD PTR SS:[EBP-17D0]
00DE5569 8B95 18E7FFFF MOV EDX,DWORD PTR SS:[EBP-18E8]
00DE556F 031481 ADD EDX,DWORD PTR DS:[ECX+EAX*4]
00DE5572 8995 D4D0FFFF MOV DWORD PTR SS:[EBP-2F2C],EDX
00DE5578 8B85 D4D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F2C]
00DE557E 8B00 MOV EAX,DWORD PTR DS:[EAX]
00DE5580 8985 D0D0FFFF MOV DWORD PTR SS:[EBP-2F30],EAX
00DE5586 81BD D0D0FFFF 9>CMP DWORD PTR SS:[EBP-2F30],90909090
00DE5590 74 56 JE SHORT 00DE55E8
00DE5592 8B85 D0D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F30]
00DE5598 2B85 E0D0FFFF SUB EAX,DWORD PTR SS:[EBP-2F20]
00DE559E 8985 D0D0FFFF MOV DWORD PTR SS:[EBP-2F30],EAX
00DE55A4 FFB5 D0D0FFFF PUSH DWORD PTR SS:[EBP-2F30]
00DE55AA 8B85 E4D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F1C]
00DE55B0 33D2 XOR EDX,EDX
00DE55B2 6A 10 PUSH 10
00DE55B4 59 POP ECX
00DE55B5 F7F1 DIV ECX
00DE55B7 FF1495 48B7DE00 CALL DWORD PTR DS:[EDX*4+DEB748] //¼ÆËã¸ÃapiÔÚIATÖеÄË÷Òý
00DE55BE 59 POP ECX
00DE55BF 8985 D0D0FFFF MOV DWORD PTR SS:[EBP-2F30],EAX
00DE55C5 8B85 D0D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F30]
00DE55CB 8B8D F0E6FFFF MOV ECX,DWORD PTR SS:[EBP-1910]
00DE55D1 8D0481 LEA EAX,DWORD PTR DS:[ECX+EAX*4] //µÃµ½¸ÃapiÔÚIATÖеØÖ·
00DE55D4 8985 D0D0FFFF MOV DWORD PTR SS:[EBP-2F30],EAX
00DE55DA 8B85 D4D0FFFF MOV EAX,DWORD PTR SS:[EBP-2F2C]
00DE55E0 8B8D D0D0FFFF MOV ECX,DWORD PTR SS:[EBP-2F30]
00DE55E6 8908 MOV DWORD PTR DS:[EAX],ECX //дÈëcall [XXX] µÄµ÷ÓõØ
Ö·
00DE55E8 ^ E9 4DFFFFFF JMP 00DE553A //¶ÏÔÚÕâÀï
×ßµ½ÕâÀ¿´¿´[EBP-17D0]ËùÖ¸ÏòµÄÄÚ´æ
00DE554D 8B8D 30E8FFFF MOV ECX,DWORD PTR SS:[EBP-17D0] //00E9B628 ±£´æcallµ÷ÓñíÊ×
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00E9B628 4B 10 00 00 92 10 00 00 A7 10 00 00 B8 10 00 00 K..?..?..?..
00E9B638 EA 10 00 00 14 11 00 00 64 11 00 00 75 11 00 00 ?....d..u..
00E9B648 88 11 00 00 AB 11 00 00 0C 12 00 00 30 12 00 00 ?..?.....0..
00E9B658 B8 12 00 00 CB 12 00 00 E8 12 00 00 37 13 00 00 ?..?..?..7..
00E9B668 AC 13 00 00 B8 14 00 00 C0 14 00 00 D6 14 00 00 ?..?..?..?..
......
00EA2B88 9B 77 1B 00 A8 77 1B 00 06 78 1B 00 79 78 1B 00 ›w.¨w.x.yx.
00EA2B98 EB 78 1B 00 E0 79 1B 00 20 7A 1B 00 7F 7A 1B 00 ëx.ày. z.z.
00EA2BA8 00 00 00 00 ....
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//½Å±¾3£¬Ð޸ĴúÂë¶Îcall [XXX]£¬µ½ÕûÀíºóµÄIAT var pCallTable //´æ·Åcallµ÷ÓÃËùÔÚÖ®´¦µÄRVAµØÖ·±í var calladdr var base var iataddr var goodiat //ÉèÖÃCall RVA µØÖ·±íËùÔÚλÖà mov pCallTable ,0E92000 //»ñÈ¡µ±Ç°Ä£¿é»ùµØÖ· gmi eip, MODULEBASE log $RESULT mov base, $RESULT NEXT: mov calladdr, [pCallTable] cmp calladdr, 0 je FIN add calladdr, base //RVA+base=VA mov iataddr, [calladdr] //µÃµ½ÔʼIAT±íÖеØÖ·(¼ä½ÓÖ¸Õë,Ö¸ÏòÕûÀíºóµÃIATÖеĵØÖ·) log calladdr mov goodiat, [iataddr] //µÃµ½ÕûÀíºóµÃIATÖиÃapiµØÖ· mov [calladdr], goodiat //ÐÞ¸ÄÔʼ´úÂëÖÐcall XXXXÖÐXXXXµÄµØÖ·,Ö¸ÏòÕûÀíºóµÄIAT add pCallTable,4 JMP NEXT FIN: MSG "Success!" ret
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004E8873 8965 E8 MOV DWORD PTR SS:[EBP-18],ESP
004E8876 FF15 68B05C00 CALL DWORD PTR DS:[5CB068] ;
kernel32.GetVersion
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