先分析，再脫殼(一)
前言
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前些天有人拿給我一個外掛程式，說用FI301探測是幻影的殼，用脫殼機脫不了，
我用FI301檢測得到如下資訊：
PELock_DB v2.2? DingBoy
我看了一下根本不是幻影的殼，以前沒見過這種殼，應該是哪位高手自己私人專用的加殼工具。
裡面有些地方做的很精彩，於是有了寫這篇文章的想法，我換了一個相同殼的目前免費試用的另一種外掛
作為目標來進行分析。這篇文章目的是讓初學者瞭解到更多的有關殼的細節，因此敘述比較羅嗦，高手就
不必看了。
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第一部分 分析
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以下過程在WIN2000下進行跟蹤分析的，對WIN98下的情況是大致猜的。自己感覺有些術語的稱呼不大準確，也不搞不準怎麼說，
只好根據自己習慣亂說了，首先用OD載入，來到入口點：
00611F19 > EB 20 JMP SHORT DREAMRO.00611F3B
... ...
F7來到這裡：
00611F3B 9C PUSHFD
00611F3C 55 PUSH EBP
00611F3D 57 PUSH EDI
00611F3E 56 PUSH ESI
00611F3F 52 PUSH EDX
00611F40 51 PUSH ECX
00611F41 53 PUSH EBX
00611F42 9C PUSHFD
00611F43 E8 00000000 CALL DREAMRO.00611F48
00611F48 5D POP EBP
00611F49 81ED 00000000 SUB EBP,0
00611F4F 9D POPFD
00611F50 83C4 14 ADD ESP,14
00611F53 5D POP EBP
00611F54 9D POPFD
00611F55 ^E9 73A1FFFF JMP DREAMRO.0060C0CD
F7來到這裡：
0060C0CD 60 PUSHAD
0060C0CE E8 00000000 CALL DREAMRO.0060C0D3
0060C0D3 5D POP EBP
；EBP=60C0D3
0060C0D4 81ED D3000000 SUB EBP,0D3
；EBP=60C000
0060C0DA 8DB5 EA000000 LEA ESI,DWORD PTR SS:[EBP+EA]
；ESI=60C0EA
0060C0E0 55 PUSH EBP
0060C0E1 56 PUSH ESI
；利用堆疊傳遞引數
0060C0E2 81C5 24100000 ADD EBP,1024
0060C0E8 55 PUSH EBP
；EBP=60D024
0060C0E9 C3 RETN
；轉到60D024對從60C0EA起始處加密程式碼進行解碼
0060C0EA C6 ???
... ...
F7來到這裡：
0060D024 81C5 35C29B45 ADD EBP,459BC235
0060D02A 8D8E 927EC55A LEA ECX,DWORD PTR DS:[ESI+5AC57E92]
0060D030 81CA 86BCCB6C OR EDX,6CCBBC86
0060D036 BD 88EA5245 MOV EBP,4552EA88
0060D03B 8D92 F7420F59 LEA EDX,DWORD PTR DS:[EDX+590F42F7]
0060D041 45 INC EBP
0060D042 8D340A LEA ESI,DWORD PTR
DS:[EDX+ECX]
0060D045 33C0 XOR EAX,EAX
；EAX=0
0060D047 030424 ADD EAX,DWORD PTR
SS:[ESP] ；從堆疊傳來的引數=60C0EA
0060D04A BA E1F0CB1A MOV EDX,1ACBF0E1
0060D04F 8D9F 43AAD977 LEA EBX,DWORD PTR DS:[EDI+77D9AA43]
0060D055 BE 76399D7A MOV ESI,7A9D3976
0060D05A 45 INC EBP
0060D05B 81F7 8EC7850A XOR EDI,0A85C78E
0060D061 8100 25AAB33C ADD DWORD PTR DS:[EAX],3CB3AA25
；解碼一個DWORD
0060D067 81CE 4CAD1855 OR ESI,5518AD4C
0060D06D E8 02000000 CALL DREAMRO.0060D074
0060D072 8130 DB 81,30
0060D074 5E POP ESI
0060D075 BB 5DD6D578 MOV EBX,78D5D65D
0060D07A EB 03 JMP SHORT DREAMRO.0060D07F
0060D07C 817500 DB 81,75,00
0060D07F 81D1 31BA4771 ADC ECX,7147BA31
0060D085 81CA 07C9462D OR EDX,2D46C907
0060D08B 81F7 E4E55426 XOR EDI,2654E5E4
0060D091 83E8 FC SUB EAX,-4
；指向下一個DWORD
... ...
後面都是類似的過程，解碼處的ADD有時換成SUB，XOR，NOT等；指標移動有時用ADD EAX，4或者4個 INC EAX等
一路跟蹤來到這裡：
0060DBCD 8128 299EED7D SUB DWORD PTR DS:[EAX],7DED9E29
；最後一處解碼，指標=60C1EE
0060DBD3 81CE D9DDF50D OR ESI,0DF5DDD9
；解碼總長度60C1EE-60C0EA=104
0060DBD9 8D92 9039CD09 LEA EDX,DWORD PTR DS:[EDX+9CD3990]
0060DBDF 8D92 C5E2EA1B LEA EDX,DWORD PTR DS:[EDX+1BEAE2C5]
0060DBE5 45 INC EBP
0060DBE6 B9 7C661F4B MOV ECX,4B1F667C
0060DBEB BA 8AF1DB4C MOV EDX,4CDBF18A
0060DBF0 40 INC EAX
0060DBF1 40 INC EAX
0060DBF2 40 INC EAX
0060DBF3 40 INC EAX
0060DBF4 BE 07C2E820 MOV ESI,20E8C207
0060DBF9 81CE 83D1A14C OR ESI,4CA1D183
0060DBFF F7C2 4EE6EB42 TEST EDX,42EBE64E
0060DC05 81CE 6A6AAE71 OR ESI,71AE6A6A
0060DC0B 81CA FE049C12 OR EDX,129C04FE
0060DC11 FF0424 INC DWORD PTR SS:[ESP]
；堆疊裡的引數60C0EA+1，作為返回地址
0060DC14 C3 RETN
；返回60C0EB
F7來到這裡：
0060C0EB 5D POP EBP
；對應60C0E0出的PUSH EBP，=60C000
0060C0EC 8B45 00 MOV EAX,DWORD PTR
SS:[EBP] ；重入標誌，對於DLL來說是有用的
0060C0EF 0BC0 OR EAX,EAX
；
0060C0F1 74 04 JE SHORT DREAMRO.0060C0F7
；第一次執行時=0，跳到60C0F7
0060C0F3 55 PUSH EBP
；不是第一次時
0060C0F4 FF65 0C JMP DWORD PTR SS:[EBP+C]
；直接跳到OEP
0060C0F7 FF45 00 INC DWORD PTR SS:[EBP]
；設定重入標誌DWORD PTR [60C000]=1
0060C0FA 8B4424 24 MOV EAX,DWORD PTR SS:[ESP+24]
0060C0FE 8945 04 MOV DWORD PTR SS:[EBP+4],EAX
0060C101 8DB5 80000000 LEA ESI,DWORD PTR SS:[EBP+80]
；KERNEL32.dll
0060C107 56 PUSH ESI
0060C108 FF55 74 CALL DWORD PTR SS:[EBP+74]
；GetModuleHandleA
0060C10B 8D75 1C LEA ESI,DWORD PTR
SS:[EBP+1C] ；VirtualAlloc
0060C10E 56 PUSH ESI
0060C10F 50 PUSH EAX
0060C110 FF55 70 CALL DWORD PTR SS:[EBP+70]
；GetProcAddress
0060C113 8945 2C MOV DWORD PTR SS:[EBP+2C],EAX
0060C116 6A 04 PUSH 4
0060C118 68 00100000 PUSH 1000
0060C11D FF75 10 PUSH DWORD PTR SS:[EBP+10]
；分配空間大小=9921h
0060C120 6A 00 PUSH 0
0060C122 FF55 2C CALL DWORD PTR SS:[EBP+2C]
；VirtualAlloc
0060C125 50 PUSH EAX
；
0060C126 8945 0C MOV DWORD PTR SS:[EBP+C],EAX
0060C129 8B5D 08 MOV EBX,DWORD PTR
SS:[EBP+8] ；壓縮程式碼相對偏移=1C22
0060C12C 03DD ADD EBX,EBP
0060C12E 50 PUSH EAX
；目的地址
0060C12F 53 PUSH EBX
；源地址=60DC22
0060C130 E8 12000000 CALL DREAMRO.0060C147
；解壓縮過程
0060C135 5A POP EDX
；
0060C136 52 PUSH EDX
；新分配的地址
0060C137 55 PUSH EBP
；=60C000
0060C138 8D85 DA000000 LEA EAX,DWORD PTR SS:[EBP+DA]
；=60C0DA
0060C13E C600 EB MOV BYTE PTR DS:[EAX],0EB
；把60C0DA處程式碼改為JMP 60C0EC
0060C141 C640 01 10 MOV BYTE PTR DS:[EAX+1],10
；為了DLL重入時跳過60D024處的解碼過程
0060C145 FFE2 JMP EDX
；跳到新地址
這裡我要多說幾句，重定位的程式碼，基準地址都是無所謂的了，對於這種有壓縮SMC，我的習慣做法是增大EXE檔案中殼所在的SECTION
的VSIZE，把解壓的目的地址指向這裡，或者新增加一個SECTION，用來做解壓的目的地址。這樣做的好處是可以可以把解壓後的程式碼
DUMP並PATCH回EXE檔案，並適當修改一下程式碼，讓程式跳到我們指定的區域，因為我們一般不會一次跟蹤成功，這樣以後再跟蹤時就
不必在意解壓過程了，也方便對解壓後的程式碼的修改。這個地方我感覺做出來比說出來要容易，想說的非常清楚也不太容易，能理解的
人會很容易理解，理解不到就算了，我只是順便多說幾句，我用這樣的方法只是在跟蹤的中間過程中方便修改，比如ANTI陷阱等，我在
跟蹤DBPE時都是這樣一層一層PATCH的。
這種方法我想也許很多人都用過，只是沒見寫出來罷了，讓某些人見笑了。
最後多說一句，我喜歡固定程式碼的地址，下過的斷點用腦子直接就記住了。
回到正題，60C145處的JMP EDX會跳到這樣的地方：
00340000 E8 24000000 CALL 00340029
；SEH開始
00340005 8B4424 04 MOV EAX,DWORD PTR SS:[ESP+4]
00340009 8B00 MOV EAX,DWORD
PTR DS:[EAX]
0034000B 3D 04000080 CMP EAX,80000004
00340010 75 08 JNZ SHORT 0034001A
00340012 8B6424 08 MOV ESP,DWORD PTR SS:[ESP+8]
00340016 EB 04 JMP SHORT 0034001C
00340018 58 POP EAX
00340019 EB 0C JMP SHORT 00340027
0034001A 0C E9 OR AL,0E9
0034001C 64:8F05 00000000 POP DWORD PTR FS:[0]
00340023 ^74 F3 JE SHORT 00340018
00340025 ^75 F1 JNZ SHORT 00340018
00340027 EB 24 JMP SHORT 0034004D
00340029 64:FF35 00000000 PUSH DWORD PTR FS:[0]
00340030 EB 12 JMP SHORT 00340044
00340032 FF DB FF
00340033 9C PUSHFD
00340034 74 03 JE SHORT 00340039
00340036 75 01 JNZ SHORT 00340039
00340038 E9 DB E9
00340039 810C24 00010000 OR DWORD PTR SS:[ESP],100
；觸發SEH的關鍵程式碼
00340040 9D POPFD
00340041 90 NOP
00340042 ^EB F4 JMP SHORT 00340038
00340044 64:8925 00000000 MOV DWORD PTR FS:[0],ESP
0034004B ^EB E6 JMP SHORT 00340033
0034004D E8 24000000 CALL 00340076
；開始下一段SEH程式碼
... ...
關於SEH我就不做說明了，大家自己檢視相關資料。
這裡跟蹤下去有很多段類似SEH，這裡用到的SEH沒有夾雜任何有用程式碼，因此只要找準位置，可以直接JMP過去，
對於OD來說只要在後面結束的地方下個斷點，執行過去就行了。
下面這裡應該是最後一個了：
003433B8 E8 24000000 CALL 003433E1
003433BD 8B4424 04 MOV EAX,DWORD PTR SS:[ESP+4]
003433C1 8B00 MOV EAX,DWORD
PTR DS:[EAX]
003433C3 3D 04000080 CMP EAX,80000004
003433C8 75 08 JNZ SHORT 003433D2
003433CA 8B6424 08 MOV ESP,DWORD PTR SS:[ESP+8]
003433CE EB 04 JMP SHORT 003433D4
003433D0 58 POP EAX
003433D1 EB 0C JMP SHORT 003433DF
003433D2 0C E9 OR AL,0E9
003433D4 64:8F05 00000000 POP DWORD PTR FS:[0]
003433DB ^74 F3 JE SHORT 003433D0
003433DD ^75 F1 JNZ SHORT 003433D0
003433DF EB 24 JMP SHORT 00343405
003433E1 64:FF35 00000000 PUSH DWORD PTR FS:[0]
003433E8 EB 12 JMP SHORT 003433FC
003433EA FF9C74 037501E9 CALL FAR FWORD PTR SS:[ESP+ESI*2+E901750>;
Far call
003433F1 810C24 00010000 OR DWORD PTR SS:[ESP],100
003433F8 9D POPFD
003433F9 90 NOP
003433FA ^EB F4 JMP SHORT 003433F0
003433FC 64:8925 00000000 MOV DWORD PTR FS:[0],ESP
00343403 ^EB E6 JMP SHORT 003433EB
00343405 E8 00000000 CALL 0034340A
因此把F2斷點下在343405處，就可以了，我習慣於用過的斷點最好馬上清掉，以免自校驗時處錯。
或者直接用F4更方便一點，我們就來到這裡了：
00343405 E8 00000000 CALL 0034340A
0034340A 5A POP EDX
0034340B 81EA 33164000 SUB EDX,401633
00343411 5D POP EBP
；=60C000，對應於60C137處的PUSH EBP
00343412 B9 03000000 MOV ECX,3
00343417 8D75 70 LEA ESI,DWORD PTR
SS:[EBP+70]
0034341A 8DBA FD314000 LEA EDI,DWORD PTR DS:[EDX+4031FD]
00343420 8B06 MOV EAX,DWORD
PTR DS:[ESI]
00343422 8907 MOV DWORD PTR
DS:[EDI],EAX
00343424 83C6 04 ADD ESI,4
00343427 83C7 04 ADD EDI,4
0034342A ^E2 F4 LOOPD SHORT
00343420
0034342C 8B45 04 MOV EAX,DWORD PTR
SS:[EBP+4]
0034342F 8982 0D324000 MOV DWORD PTR DS:[EDX+40320D],EAX
00343435 8D85 47010000 LEA EAX,DWORD PTR SS:[EBP+147]
0034343B 8982 61324000 MOV DWORD PTR DS:[EDX+403261],EAX
00343441 8B45 2C MOV EAX,DWORD PTR
SS:[EBP+2C]
00343444 8982 09324000 MOV DWORD PTR DS:[EDX+403209],EAX
0034344A 8BEA MOV EBP,EDX
0034344C E8 03000000 CALL 00343454
00343451 C78400 DB C7,84,00
00343454 58 POP EAX
00343455 EB 01 JMP SHORT 00343458
00343457 E9 DB E9
00343458 83C0 07 ADD EAX,7
0034345B 50 PUSH EAX
0034345C C3 RETN
0034345D FF35 DB FF,35
0034345F 8B85 1D324000 MOV EAX,DWORD PTR SS:[EBP+40321D]
00343465 0BC0 OR EAX,EAX
00343467 74 05 JE SHORT 0034346E
00343469 E9 F70E0000 JMP 00344365
0034346E 8B85 25324000 MOV EAX,DWORD PTR SS:[EBP+403225]
00343474 0BC0 OR EAX,EAX
00343476 75 29 JNZ SHORT 003434A1
00343478 6A 00 PUSH 0
0034347A FF95 01324000 CALL DWORD PTR SS:[EBP+403201]
；GetModuleHandleA
00343480 EB 01 JMP SHORT 00343483
00343482 E8 DB E8
00343483 68 C2100000 PUSH 10C2
00343488 E8 01000000 CALL 0034348E
0034348D E9 DB E9
0034348E 68 24080E68 PUSH 680E0824
00343493 68 90908344 PUSH 44839090
；
00343498 FFE4 JMP ESP
；NOP；NOP；ADD [ESP+8]，0E；PUSH 34349B；RET 10
跟幾步就到這裡了：
0034349B 8985 0D324000 MOV DWORD PTR SS:[EBP+40320D],EAX
；HANDLE=400000
003434A1 6A 04 PUSH 4
003434A3 68 00100000 PUSH 1000
003434A8 68 00100000 PUSH 1000
003434AD 6A 00 PUSH 0
003434AF FF95 09324000 CALL DWORD PTR SS:[EBP+403209]
；KERNEL32.VirtualAlloc
003434B5 8985 DD364000 MOV DWORD PTR SS:[EBP+4036DD],EAX
003434BB 5E POP ESI
；對應於60C136處的PUSH EDX
；********************************************************************************************************
；=====注意看精彩片段開始了==================================================================================
TELOCK中有一段曾經被稱為非常精彩的程式碼，下面這一段是青處於藍而勝於藍，精彩倍增：
003434BC E8 12010000 CALL 003435D3
003434C1 E8 04000000 CALL 003434CA
；SEH HANDLER
003434C6 00000000 DD 0
；COUNTER
003434CA 5A POP EDX
；=3434C6
003434CB 8B4424 04 MOV EAX,DWORD PTR SS:[ESP+4]
003434CF 8B00 MOV EAX,DWORD
PTR DS:[EAX] ；EXCEPTION REASON
003434D1 8B4C24 0C MOV ECX,DWORD PTR SS:[ESP+C]
；pCONTEXT
003434D5 FF81 B8000000 INC DWORD PTR DS:[ECX+B8]
；regEIP+1
003434DB 3D 03000080 CMP EAX,80000003
；INT3 BREAKPIONT
003434E0 75 51 JNZ SHORT 00343533
；3435E3處的INT3會來到這裡，第一次SEH設定DRx斷點
003434E2 8B81 B4000000 MOV EAX,DWORD PTR DS:[ECX+B4]
；regEBP
003434E8 8D80 21184000 LEA EAX,DWORD PTR DS:[EAX+401821]
；
003434EE 8941 04 MOV DWORD PTR DS:[ECX+4],EAX
；DR0=3435F8
003434F1 8B81 B4000000 MOV EAX,DWORD PTR DS:[ECX+B4]
003434F7 8D80 4F184000 LEA EAX,DWORD PTR DS:[EAX+40184F]
003434FD 8941 08 MOV DWORD PTR DS:[ECX+8],EAX
；DR1=343626
00343500 8B81 B4000000 MOV EAX,DWORD PTR DS:[ECX+B4]
00343506 8D80 7C184000 LEA EAX,DWORD PTR DS:[EAX+40187C]
0034350C 8941 0C MOV DWORD PTR DS:[ECX+C],EAX
；DR2=343653
0034350F 8B81 B4000000 MOV EAX,DWORD PTR DS:[ECX+B4]
00343515 8D80 AF184000 LEA EAX,DWORD PTR DS:[EAX+4018AF]
0034351B 8941 10 MOV DWORD PTR DS:[ECX+10],EAX
；DR3=343686
0034351E 33C0 XOR EAX,EAX
00343520 8161 14 F00FFFFF AND DWORD PTR DS:[ECX+14],FFFF0FF0 ；DR6,所有是1的位都是保留為1的，初始化除錯狀態暫存器
00343527 C741 18 55010000 MOV DWORD PTR DS:[ECX+18],155
；DR7，設定除錯控制暫存器，允許4個當前任務的執行斷點
0034352E E9 9F000000 JMP 003435D2
；根據系統不同會返回到3435E4或3435E5
00343533 3D 940000C0 CMP EAX,C0000094
；DIVIDE BY ZERO
00343538 75 2A JNZ SHORT 00343564
；最後一次的SEH來到這裡
0034353A C702 00000000 MOV DWORD PTR DS:[EDX],0
；恢復COUNTER=0
00343540 FF81 B8000000 INC DWORD PTR DS:[ECX+B8]
；regEIP+1
00343546 33C0 XOR EAX,EAX
00343548 2141 04 AND DWORD PTR DS:[ECX+4],EAX
；清DR0
0034354B 2141 08 AND DWORD PTR DS:[ECX+8],EAX
；清DR1
0034354E 2141 0C AND DWORD PTR DS:[ECX+C],EAX
；清DR2
00343551 2141 10 AND DWORD PTR DS:[ECX+10],EAX
；清DR3
00343554 8161 14 F00FFFFF AND DWORD PTR DS:[ECX+14],FFFF0FF0 ；初始化DR6
0034355B 8161 18 00DC0000 AND DWORD PTR DS:[ECX+18],0DC00
；初始化DR7，禁止掉所有斷點
00343562 EB 6E JMP SHORT 003435D2
；最後會返回到34369E
00343564 3D 04000080 CMP EAX,80000004
；SINGLE STEP BREAKPIONT
00343569 75 64 JNZ SHORT 003435CF
；中間的4次DRx斷點SEH來到這裡
0034356B FF02 INC DWORD PTR
DS:[EDX] ；COUNTER+1
0034356D 8B02 MOV EAX,DWORD
PTR DS:[EDX]
0034356F 83F8 01 CMP EAX,1
；is DR0？
00343572 75 08 JNZ SHORT 0034357C
00343574 F791 B0000000 NOT DWORD PTR DS:[ECX+B0]
；not regEAX
0034357A EB 4F JMP SHORT 003435CB
；返回到3435F9或3435FA
0034357C 83F8 02 CMP EAX,2
；is DR1？
0034357F 75 11 JNZ SHORT 00343592
00343581 8B81 B0000000 MOV EAX,DWORD PTR DS:[ECX+B0]
；
00343587 C1C0 13 ROL EAX,13
；ROL regEAX
0034358A 8981 B0000000 MOV DWORD PTR DS:[ECX+B0],EAX
00343590 EB 39 JMP SHORT 003435CB
；返回到343627或343628
00343592 83F8 03 CMP EAX,3
；is DR2？
00343595 75 2B JNZ SHORT 003435C2
00343597 53 PUSH EBX
00343598 8181 B0000000 26>ADD DWORD PTR DS:[ECX+B0],4B23526 ；add
regEAX,4B23526
003435A2 8B81 B0000000 MOV EAX,DWORD PTR DS:[ECX+B0]
；regEAX
003435A8 8B99 A4000000 MOV EBX,DWORD PTR DS:[ECX+A4]
；regEBX
003435AE 66:93 XCHG AX,BX
003435B0 66:03C3 ADD AX,BX
003435B3 8981 B0000000 MOV DWORD PTR DS:[ECX+B0],EAX
；
003435B9 8999 A4000000 MOV DWORD PTR DS:[ECX+A4],EBX
；
003435BF 5B POP EBX
003435C0 EB 09 JMP SHORT 003435CB
；返回到343654或343655
003435C2 8B81 A0000000 MOV EAX,DWORD PTR DS:[ECX+A0]
；when DR3
003435C8 8030 55 XOR BYTE PTR DS:[EAX],55
；xor byte ptr [regESI],55
003435CB 33C0 XOR EAX,EAX
003435CD EB 03 JMP SHORT 003435D2
；返回到343687或343688
003435CF 33C0 XOR EAX,EAX
003435D1 40 INC EAX
003435D2 C3 RETN
003435D3 33C0 XOR EAX,EAX
003435D5 64:FF35 00000000 PUSH DWORD PTR FS:[0]
003435DC 64:8925 00000000 MOV DWORD PTR FS:[0],ESP
003435E3 CC INT3
；第一次SEH
003435E4 90 NOP
；這個跟在INT3後面NOP一般是為了系統的相容性
003435E5 8D8D 2E164000 LEA ECX,DWORD PTR SS:[EBP+40162E]
；=343405，校驗起始地址
003435EB 2BCE SUB ECX,ESI
；343405-340000=3405，校驗長度
003435ED 33DB XOR EBX,EBX
003435EF 33C0 XOR EAX,EAX
003435F1 AC LODS BYTE
PTR DS:[ESI]
003435F2 03D8 ADD EBX,EAX
003435F4 ^E2 FB LOOPD SHORT
003435F1
003435F6 8BC3 MOV EAX,EBX
；=13EB1C，一段程式碼的校驗和，作為下一段程式碼解碼的KEY
003435F8 F8 CLC
；DR0，結果等效於NOT EAX
003435F9 90 NOP
003435FA 8DB5 4F184000 LEA ESI,DWORD PTR SS:[EBP+40184F]
；=343626，解碼起始地址
00343600 B9 AE190000 MOV ECX,19AE
；解碼長度
00343605 F7E1 MUL ECX
；
00343607 D3C8 ROR EAX,CL
；
00343609 3006 XOR BYTE PTR
DS:[ESI],AL ；解碼運算
0034360B 46 INC ESI
0034360C 40 INC EAX
0034360D D40A AAM
0034360F ^E2 F4 LOOPD SHORT
00343605
00343611 B9 BC000000 MOV ECX,0BC
；校驗長度
00343616 8DB5 2E164000 LEA ESI,DWORD PTR SS:[EBP+40162E]
；=343405，校驗起始地址
0034361C 33C0 XOR EAX,EAX
0034361E 3206 XOR AL,BYTE PTR
DS:[ESI]
00343620 C1C8 08 ROR EAX,8
00343623 46 INC ESI
00343624 ^E2 F8 LOOPD SHORT
0034361E ；一段程式碼的校驗值，作為下一段程式碼解碼的KEY
經過DR0後面的解碼還原出下面的程式碼：
00343626 FC CLD
；DR1，結果等效於ROL EAX，13
00343627 90 NOP
00343628 B9 81190000 MOV ECX,1981
；解碼長度
0034362D 8DB5 7C184000 LEA ESI,DWORD PTR SS:[EBP+40187C]
；=343653，解碼起始地址
00343633 8D4481 43 LEA EAX,DWORD PTR DS:[ECX+EAX*4+43]
00343637 3006 XOR BYTE PTR
DS:[ESI],AL
00343639 D40A AAM
0034363B 46 INC ESI
0034363C ^E2 F5 LOOPD SHORT
00343633
0034363E B9 80000000 MOV ECX,80
；校驗長度
00343643 C1E9 02 SHR ECX,2
00343646 8DB5 FC174000 LEA ESI,DWORD PTR SS:[EBP+4017FC]
；=3435D3，校驗起始地址
0034364C 33DB XOR EBX,EBX
0034364E AD LODS DWORD
PTR DS:[ESI]
0034364F 33D8 XOR EBX,EAX
00343651 ^E2 FB LOOPD SHORT
0034364E ；一段程式碼的校驗值，作為下一段程式碼解碼的KEY
經過DR1後面的解碼還原出下面的程式碼：
00343653 F9 STC
；DR2
00343654 90 NOP
00343655 B9 4E190000 MOV ECX,194E
；解碼長度
0034365A C1E9 02 SHR ECX,2
0034365D 8DB5 AF184000 LEA ESI,DWORD PTR SS:[EBP+4018AF]
；=343686，解碼起始地址
00343663 33D2 XOR EDX,EDX
00343665 F7E3 MUL EBX
00343667 81C2 2635B204 ADD EDX,4B23526
0034366D 3116 XOR DWORD PTR
DS:[ESI],EDX
0034366F 8BC3 MOV EAX,EBX
00343671 8BDA MOV EBX,EDX
00343673 83C6 04 ADD ESI,4
00343676 ^E2 EB LOOPD SHORT
00343663
00343678 8DB5 BB184000 LEA ESI,DWORD PTR SS:[EBP+4018BB]
；=343692，解碼起始地址
0034367E B9 12030000 MOV ECX,312
；解碼長度
00343683 C1E9 02 SHR ECX,2
經過DR2後面的解碼還原出下面的程式碼：
00343686 90 NOP
；DR3，每次觸發執行一次XOR BYTE PTR [ESI]，55
00343687 90 NOP
；
00343688 802E 13 SUB BYTE PTR DS:[ESI],13
0034368B F616 NOT BYTE PTR
DS:[ESI]
0034368D 83C6 04 ADD ESI,4
00343690 ^E2 F4 LOOPD SHORT
00343686 ；這個迴圈把DR3嵌在裡面了
經過DR3後面的解碼還原出下面的程式碼：
00343692 B8 00010000 MOV EAX,100
00343697 33D2 XOR EDX,EDX
00343699 33DB XOR EBX,EBX
0034369B F7F3 DIV EBX
；DIVIDE BY ZERO，最後一次SEH，恢復一些原始狀態
0034369D 90 NOP
0034369E 64:8F05 00000000 POP DWORD PTR FS:[0]
；恢復SEH鏈
003436A5 58 POP EAX
；
；=====此階段精彩片段結束===================================================================================
；********************************************************************************************************
回顧一下前面這段程式碼，想跟蹤中間細節時一定要倍加小心，斷點選取一定要準確合理，因為有效驗程式碼的影響，我也經常不小心就會出錯，
比較容易的做法是在34353A處下一個F2斷點，也就是對應於最後一次的（由34369B這行程式碼觸發的DIVIDE BY ZERO）SEH，F9執行中斷
後先清除此斷點，再在3436A5處F2下一斷點，F9執行中斷後再清除斷點。
來到這裡了：
003436A6 8BFC MOV EDI,ESP
003436A8 8DA5 FC314000 LEA ESP,DWORD PTR SS:[EBP+4031FC]
；=344FD3，解碼尾地址
003436AE B9 FB180000 MOV ECX,18FB
；解碼長度
003436B3 B8 A4ABA45B MOV EAX,5BA4ABA4
003436B8 BB BDD89800 MOV EBX,98D8BD
003436BD BE D5260000 MOV ESI,26D5
003436C2 33D2 XOR EDX,EDX
003436C4 F7E6 MUL ESI
003436C6 05 78563412 ADD EAX,12345678
003436CB 83D2 00 ADC EDX,0
003436CE F7F3 DIV EBX
003436D0 58 POP EAX
003436D1 32C2 XOR AL,DL
003436D3 50 PUSH EAX
003436D4 4C DEC ESP
003436D5 8BC2 MOV EAX,EDX
003436D7 ^E2 E9 LOOPD SHORT
003436C2 ；又是一段自解碼，就不多說了
再3436D9這行按F4，完成自解碼後來到這裡：
003436D9 8BE7 MOV ESP,EDI
003436DB 8DB5 FD314000 LEA ESI,DWORD PTR SS:[EBP+4031FD]
；幾個API
003436E1 B9 03000000 MOV ECX,3
003436E6 EB 07 JMP SHORT 003436EF
003436E8 AD LODS DWORD
PTR DS:[ESI]
003436E9 E8 F60F0000 CALL 003446E4
；檢測API函式入口是否有INT3斷點
003436EE 49 DEC ECX
003436EF 0BC9 OR ECX,ECX
003436F1 ^75 F5 JNZ SHORT 003436E8
003436F3 8DB5 0F334000 LEA ESI,DWORD PTR SS:[EBP+40330F]
；KERNEL32.dll
003436F9 56 PUSH ESI
003436FA 8D85 36194000 LEA EAX,DWORD PTR SS:[EBP+401936]
；=34370D，執行完下面的JMP 34442B後的返回地址
00343700 50 PUSH EAX
00343701 8B85 01324000 MOV EAX,DWORD PTR SS:[EBP+403201]
；GetModuleHandleA
00343707 E9 1F0D0000 JMP 0034442B
；跟一下就知道了，等效於JMP
EAX，後面用了很多次
0034370C E8 DB E8
這裡以後就不必每次都跟進34442B裡面去了，當執行到343701這行時，在程式碼視窗裡按Ctrl+G，然後輸入EAX，游標就定在34370D這行了
按F4就到這裡了（以後在JMP 0034442B之前都可以這樣操作）：
0034370D 8BF0 MOV ESI,EAX
0034370F 8DBD 1D334000 LEA EDI,DWORD PTR SS:[EBP+40331D]
；=3450F4，API NAME
00343715 B9 18000000 MOV ECX,18
0034371A 57 PUSH EDI
0034371B 8A07 MOV AL,BYTE PTR
DS:[EDI]
0034371D EB 05 JMP SHORT 00343724
0034371F F6D0 NOT AL
；解碼API NAME
00343721 AA STOS BYTE
PTR ES:[EDI]
00343722 8A07 MOV AL,BYTE PTR
DS:[EDI]
00343724 0AC0 OR AL,AL
00343726 ^75 F7 JNZ SHORT 0034371F
00343728 5F POP EDI
00343729 51 PUSH ECX
0034372A 57 PUSH EDI
；API NAME
0034372B 56 PUSH ESI
；ModuleHandle
0034372C 8D85 68194000 LEA EAX,DWORD PTR SS:[EBP+401968]
；=34373F
00343732 50 PUSH EAX
00343733 8B85 FD314000 MOV EAX,DWORD PTR SS:[EBP+4031FD]
；GetProcAddress
00343739 E9 ED0C0000 JMP 0034442B
；JMP EAX
0034373E E9 DB E9
0034373F E8 A00F0000 CALL 003446E4
；檢測API函式入口是否有INT3斷點
00343744 0FB64F FF MOVZX ECX,BYTE PTR DS:[EDI-1]
；API NAME長度
00343748 8907 MOV DWORD PTR
DS:[EDI],EAX ；儲存ProcAddress,同時破壞了API NAME
0034374A 03F9 ADD EDI,ECX
；指向下一個API NAME
0034374C 47 INC EDI
0034374D 59 POP ECX
0034374E ^E2 CA LOOPD SHORT
0034371A
00343750 8DB5 8C324000 LEA ESI,DWORD PTR SS:[EBP+40328C]
；USER32.dll
00343756 56 PUSH ESI
00343757 8D85 93194000 LEA EAX,DWORD PTR SS:[EBP+401993]
；=34376A
0034375D 50 PUSH EAX
0034375E 8B85 01324000 MOV EAX,DWORD PTR SS:[EBP+403201]
；GetModuleHandleA
00343764 E9 C20C0000 JMP 0034442B
；JMP EAX
00343769 68 DB 68
0034376A 0BC0 OR EAX,EAX
0034376C 75 15 JNZ SHORT 00343783
0034376E 56 PUSH ESI
0034376F 8D85 AC194000 LEA EAX,DWORD PTR SS:[EBP+4019AC]
;=343783
00343775 50 PUSH EAX
00343776 8B85 05324000 MOV EAX,DWORD PTR SS:[EBP+403205]
；LoadLibraryA
0034377C E9 AA0C0000 JMP 0034442B
；JMP EAX
00343781 FF35 DB FF,35
00343783 8BF0 MOV ESI,EAX
00343785 8DBD 98324000 LEA EDI,DWORD PTR SS:[EBP+403298]
；API NAME
0034378B B9 07000000 MOV ECX,7
00343790 57 PUSH EDI
00343791 8A07 MOV AL,BYTE PTR
DS:[EDI]
00343793 EB 05 JMP SHORT 0034379A
00343795 F6D0 NOT AL
；解碼
00343797 AA STOS BYTE
PTR ES:[EDI]
00343798 8A07 MOV AL,BYTE PTR
DS:[EDI]
0034379A 0AC0 OR AL,AL
0034379C ^75 F7 JNZ SHORT 00343795
0034379E 5F POP EDI
0034379F 51 PUSH ECX
003437A0 57 PUSH EDI
003437A1 56 PUSH ESI
003437A2 8D85 DF194000 LEA EAX,DWORD PTR SS:[EBP+4019DF]
；=3437B6
003437A8 50 PUSH EAX
003437A9 8B85 FD314000 MOV EAX,DWORD PTR SS:[EBP+4031FD]
；GetProcAddress
003437AF E9 770C0000 JMP 0034442B
；JMP EAX
003437B4 FF25 DB FF，25
003437B6 E8 290F0000 CALL 003446E4
；檢測API函式入口是否有INT3斷點
003437BB 0FB64F FF MOVZX ECX,BYTE PTR DS:[EDI-1]
003437BF 8907 MOV DWORD PTR
DS:[EDI],EAX
003437C1 03F9 ADD EDI,ECX
003437C3 47 INC EDI
003437C4 59 POP ECX
003437C5 ^E2 C9 LOOPD SHORT
00343790
003437C7 8DB5 4D354000 LEA ESI,DWORD PTR SS:[EBP+40354D]
；\\.\NTICE，\\.\SICE，\\.\TWX2002
003437CD 46 INC ESI
；\\.\filemon，\\.\regmon，\\.\FILEVXD
003437CE B9 09000000 MOV ECX,9
；\\.\REGVXD，\\.\ICEDUMP，\\.\BW2K
003437D3 EB 58 JMP SHORT 0034382D
；利用CreateFileA進行ANTI檢測
003437D5 51 PUSH ECX
003437D6 56 PUSH ESI
003437D7 AC LODS BYTE
PTR DS:[ESI]
003437D8 EB 06 JMP SHORT 003437E0
003437DA F6D0 NOT AL
；解密
003437DC 8846 FF MOV BYTE PTR DS:[ESI-1],AL
003437DF AC LODS BYTE
PTR DS:[ESI]
003437E0 0AC0 OR AL,AL
003437E2 ^75 F6 JNZ SHORT 003437DA
003437E4 5E POP ESI
003437E5 6A 00 PUSH 0
003437E7 68 80000000 PUSH 80
003437EC 6A 03 PUSH 3
003437EE 6A 00 PUSH 0
003437F0 6A 03 PUSH 3
003437F2 68 000000C0 PUSH C0000000
003437F7 56 PUSH ESI
003437F8 8D85 341A4000 LEA EAX,DWORD PTR SS:[EBP+401A34]
；
003437FE 50 PUSH EAX
003437FF 8B85 2A334000 MOV EAX,DWORD PTR SS:[EBP+40332A]
；CreateFileA
00343805 E9 210C0000 JMP 0034442B
；JMP EAX
0034380A E9 DB E9
0034380B 83F8 FF CMP EAX,-1
0034380E 74 05 JE SHORT 00343815
00343810 E9 C21C0000 JMP 003454D7
；FIND THIEF
... ...
00343815 56 PUSH ESI
00343816 AC LODS BYTE
PTR DS:[ESI]
00343817 EB 06 JMP SHORT 0034381F
00343819 F6D0 NOT AL
；加密
0034381B 8846 FF MOV BYTE PTR DS:[ESI-1],AL
0034381E AC LODS BYTE
PTR DS:[ESI]
0034381F 0AC0 OR AL,AL
00343821 ^75 F6 JNZ SHORT 00343819
00343823 5E POP ESI
00343824 59 POP ECX
00343825 0FB646 FF MOVZX EAX,BYTE PTR DS:[ESI-1]
00343829 03F0 ADD ESI,EAX
0034382B 46 INC ESI
0034382C 49 DEC ECX
0034382D 0BC9 OR ECX,ECX
0034382F ^75 A4 JNZ SHORT 003437D5
00343831 8D1D 5D364000 LEA EBX,DWORD PTR DS:[40365D]
；以下對被加殼原EXE進行解碼
00343837 833C2B 00 CMP DWORD PTR DS:[EBX+EBP],0
；SECTION SIZE？
0034383B 0F84 B3000000 JE 003438F4
00343841 8D042B LEA EAX,DWORD PTR
DS:[EBX+EBP]
00343844 8B48 08 MOV ECX,DWORD PTR
DS:[EAX+8] ；LEN
00343847 8B70 04 MOV ESI,DWORD PTR
DS:[EAX+4] ；RVA
0034384A 03B5 0D324000 ADD ESI,DWORD PTR SS:[EBP+40320D]
；BASE ADDRESS
00343850 8BFE MOV EDI,ESI
00343852 BA 2635B204 MOV EDX,4B23526
00343857 EB 1F JMP SHORT 00343878
00343859 AC LODS BYTE
PTR DS:[ESI] ；解碼過程
0034385A D2C8 ROR AL,CL
0034385C 32C1 XOR AL,CL
0034385E 04 66 ADD AL,66
00343860 32C5 XOR AL,CH
00343862 02C6 ADD AL,DH
00343864 2AC2 SUB AL,DL
00343866 02C1 ADD AL,CL
00343868 2AC5 SUB AL,CH
0034386A 32C2 XOR AL,DL
0034386C 04 23 ADD AL,23
0034386E 32C6 XOR AL,DH
00343870 F6D0 NOT AL
00343872 D2C8 ROR AL,CL
00343874 D3CA ROR EDX,CL
00343876 AA STOS BYTE
PTR ES:[EDI]
00343877 49 DEC ECX
00343878 0BC9 OR ECX,ECX
0034387A ^75 DD JNZ SHORT 00343859
0034387C 53 PUSH EBX
0034387D 6A 04 PUSH 4
0034387F 68 00100000 PUSH 1000
00343884 FF342B PUSH DWORD PTR DS:[EBX+EBP]
00343887 6A 00 PUSH 0
00343889 8D85 C51A4000 LEA EAX,DWORD PTR SS:[EBP+401AC5]
；=
0034388F 50 PUSH EAX
00343890 8B85 09324000 MOV EAX,DWORD PTR SS:[EBP+403209]
；VirtualAlloc
00343896 E9 900B0000 JMP 0034442B
；JMP EAX
0034389B E9 DB E9
0034389C 5B POP EBX
0034389D 8BF0 MOV ESI,EAX
0034389F 8BC3 MOV EAX,EBX
003438A1 03C5 ADD EAX,EBP
003438A3 8B78 04 MOV EDI,DWORD PTR
DS:[EAX+4]
003438A6 03BD 0D324000 ADD EDI,DWORD PTR SS:[EBP+40320D]
003438AC 56 PUSH ESI
；DES
003438AD 57 PUSH EDI
；SRC
003438AE 8D85 E71A4000 LEA EAX,DWORD PTR SS:[EBP+401AE7]
；=3438BE
003438B4 50 PUSH EAX
003438B5 8B85 61324000 MOV EAX,DWORD PTR SS:[EBP+403261]
；解壓縮函式
003438BB FFE0 JMP EAX
003438BD E9 DB E9
003438BE 8B0C2B MOV ECX,DWORD PTR
DS:[EBX+EBP] ；SIZE
003438C1 56 PUSH ESI
003438C2 51 PUSH ECX
003438C3 C1E9 02 SHR ECX,2
003438C6 F3:A5 REP MOVSD
；把解壓後的資料移回原始地址
003438C8 59 POP ECX
003438C9 83E1 03 AND ECX,3
003438CC F3:A4 REP MOVSB
003438CE 5E POP ESI
003438CF 53 PUSH EBX
003438D0 68 00800000 PUSH 8000
003438D5 6A 00 PUSH 0
003438D7 56 PUSH ESI
003438D8 8D85 141B4000 LEA EAX,DWORD PTR SS:[EBP+401B14]
；=3438EB
003438DE 50 PUSH EAX
003438DF 8B85 1D334000 MOV EAX,DWORD PTR SS:[EBP+40331D]
；VirtualFree
003438E5 E9 410B0000 JMP 0034442B
003438EA E9 DB E9
003438EB 5B POP EBX
003438EC 83C3 0C ADD EBX,0C
003438EF ^E9 43FFFFFF JMP 00343837
；繼續下一段解碼
003438F4 8BB5 55364000 MOV ESI,DWORD PTR SS:[EBP+403655]
；程式碼段RVA
003438FA 03B5 0D324000 ADD ESI,DWORD PTR SS:[EBP+40320D]
；BASE ADDRESS
00343900 8B8D 59364000 MOV ECX,DWORD PTR SS:[EBP+403659]
；程式碼段SIZE
00343906 83E9 05 SUB ECX,5
；下面的處理在各種殼裡都有類似但各不相同的做法
00343909 EB 5B JMP SHORT 00343966
0034390B 66:8B06 MOV AX,WORD PTR DS:[ESI]
0034390E 3C E8 CMP AL,0E8
；CALL XXXXXXXX
00343910 75 16 JNZ SHORT 00343928
00343912 8BC6 MOV EAX,ESI
；修復CALL TRICKS
00343914 2B85 0D324000 SUB EAX,DWORD PTR SS:[EBP+40320D]
0034391A 83C0 05 ADD EAX,5
0034391D 2946 01 SUB DWORD PTR DS:[ESI+1],EAX
00343920 83C6 04 ADD ESI,4
00343923 83E9 04 SUB ECX,4
00343926 EB 3C JMP SHORT 00343964
00343928 3C E9 CMP AL,0E9
；ABS LJMP XXXXXXXX
0034392A 75 16 JNZ SHORT 00343942
0034392C 8BC6 MOV EAX,ESI
;修復絕對長跳轉 TRICKS
0034392E 2B85 0D324000 SUB EAX,DWORD PTR SS:[EBP+40320D]
00343934 83C0 05 ADD EAX,5
00343937 2946 01 SUB DWORD PTR DS:[ESI+1],EAX
0034393A 83C6 04 ADD ESI,4
0034393D 83E9 04 SUB ECX,4
00343940 EB 22 JMP SHORT 00343964
00343942 3C 0F CMP AL,0F
；CON LJMP XXXXXXXX
00343944 75 1E JNZ SHORT 00343964
00343946 80FC 7F CMP AH,7F
00343949 76 19 JBE SHORT 00343964
0034394B 80FC 90 CMP AH,90
0034394E 73 14 JNB SHORT 00343964
00343950 8BC6 MOV EAX,ESI
;修復條件長跳轉 TRICKS
00343952 2B85 0D324000 SUB EAX,DWORD PTR SS:[EBP+40320D]
00343958 83C0 06 ADD EAX,6
0034395B 2946 02 SUB DWORD PTR DS:[ESI+2],EAX
0034395E 83C6 05 ADD ESI,5
00343961 83E9 05 SUB ECX,5
00343964 46 INC ESI
00343965 49 DEC ECX
00343966 0BC9 OR ECX,ECX
00343968 ^75 A1 JNZ SHORT 0034390B
0034396A 8DB5 CD1B4000 LEA ESI,DWORD PTR SS:[EBP+401BCD]
；=3439A4
00343970 87E6 XCHG ESI,ESP
00343972 B9 C1090000 MOV ECX,9C1
；
00343977 58 POP EAX
00343978 F6D0 NOT AL
；又是一段自解碼過程
0034397A 50 PUSH EAX
0034397B 44 INC ESP
0034397C ^E2 F9 LOOPD SHORT
00343977
0034397E 87E6 XCHG ESI,ESP
00343980 6A 04 PUSH 4
00343982 68 00100000 PUSH 1000
00343987 68 00200000 PUSH 2000
0034398C 6A 00 PUSH 0
0034398E FF95 09324000 CALL DWORD PTR SS:[EBP+403209]
；VirtualAlloc
00343994 8985 E1364000 MOV DWORD PTR SS:[EBP+4036E1],EAX
；為第二層IAT重定位分配的空間
0034399A C785 E5364000 00>MOV DWORD PTR SS:[EBP+4036E5],0
；第二層IAT重定位相對指標
003439A4 8B85 35324000 MOV EAX,DWORD PTR SS:[EBP+403235]
；IAT是否加密？
003439AA 0BC0 OR EAX,EAX
003439AC 0F85 BD000000 JNZ 00343A6F
；我們這個當然是加密的了，因此要跳的
；；；；；；中間這段是對未加密IAT的處理，我們可以跳過；；；；；；；；；；；；；；；；；；；；；
003439B2 8BBD 51324000 MOV EDI,DWORD PTR SS:[EBP+403251]
；IAT RVA
003439B8 03BD 0D324000 ADD EDI,DWORD PTR SS:[EBP+40320D]
；BASE ADDRESS
003439BE 8B77 0C MOV ESI,DWORD PTR
DS:[EDI+C]
003439C1 0BF6 OR ESI,ESI
003439C3 75 05 JNZ SHORT 003439CA
003439C5 E9 A0000000 JMP 00343A6A
003439CA 03B5 0D324000 ADD ESI,DWORD PTR SS:[EBP+40320D]
；BASE ADDRESS
003439D0 56 PUSH ESI
003439D1 8D85 0E1C4000 LEA EAX,DWORD PTR SS:[EBP+401C0E]
；=3439E5
003439D7 50 PUSH EAX
003439D8 8B85 01324000 MOV EAX,DWORD PTR SS:[EBP+403201]
；GetModuleHandleA
003439DE E9 480A0000 JMP 0034442B
；JMP EAX
003439E3 8134 DB 81，34
003439E5 0BC0 OR EAX,EAX
003439E7 75 1E JNZ SHORT 00343A07
003439E9 56 PUSH ESI
003439EA 8D85 271C4000 LEA EAX,DWORD PTR SS:[EBP+401C27]
；=3439FE
003439F0 50 PUSH EAX
003439F1 8B85 05324000 MOV EAX,DWORD PTR SS:[EBP+403205]
；LoadLibraryA
003439F7 E9 2F0A0000 JMP 0034442B
；JMP EAX
003439FC FF35 DB FF，35
003439FE 0BC0 OR EAX,EAX
00343A00 75 05 JNZ SHORT 00343A07
00343A02 E9 8E0C0000 JMP 00344695
00343A07 8BF0 MOV ESI,EAX
00343A09 8B17 MOV EDX,DWORD
PTR DS:[EDI]
00343A0B 0BD2 OR EDX,EDX
00343A0D 75 03 JNZ SHORT 00343A12
00343A0F 8B57 10 MOV EDX,DWORD PTR
DS:[EDI+10]
00343A12 0395 0D324000 ADD EDX,DWORD PTR SS:[EBP+40320D]
00343A18 8B5F 10 MOV EBX,DWORD PTR
DS:[EDI+10]
00343A1B 039D 0D324000 ADD EBX,DWORD PTR SS:[EBP+40320D]
00343A21 8B02 MOV EAX,DWORD
PTR DS:[EDX]
00343A23 0BC0 OR EAX,EAX
00343A25 75 02 JNZ SHORT 00343A29
00343A27 EB 39 JMP SHORT 00343A62
00343A29 53 PUSH EBX
00343A2A 52 PUSH EDX
00343A2B 99 CDQ
00343A2C 0BD2 OR EDX,EDX
00343A2E 75 0B JNZ SHORT 00343A3B
00343A30 83C0 02 ADD EAX,2
00343A33 0385 0D324000 ADD EAX,DWORD PTR SS:[EBP+40320D]
00343A39 EB 05 JMP SHORT 00343A40
00343A3B 25 FFFFFF7F AND EAX,7FFFFFFF
00343A40 50 PUSH EAX
00343A41 56 PUSH ESI
00343A42 8D85 7F1C4000 LEA EAX,DWORD PTR SS:[EBP+401C7F]
；343A56
00343A48 50 PUSH EAX
00343A49 8B85 FD314000 MOV EAX,DWORD PTR SS:[EBP+4031FD]
；GetProcAddress
00343A4F E9 D7090000 JMP 0034442B
00343A54 8135 DB 81，35
00343A56 8903 MOV DWORD PTR
DS:[EBX],EAX
00343A58 5A POP EDX
00343A59 5B POP EBX
00343A5A 83C2 04 ADD EDX,4
00343A5D 83C3 04 ADD EBX,4
00343A60 ^EB BF JMP SHORT 00343A21
00343A62 83C7 14 ADD EDI,14
00343A65 ^E9 54FFFFFF JMP 003439BE
00343A6A E9 BE040000 JMP 00343F2D
；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；；
從這裡開始是對加密IAT的處理：
00343A6F 8D95 2E164000 LEA EDX,DWORD PTR SS:[EBP+40162E]
00343A75 0395 51324000 ADD EDX,DWORD PTR SS:[EBP+403251]
00343A7B 8B3A MOV EDI,DWORD
PTR DS:[EDX] ；被加密的IMPORT DIRECTORY DATA
00343A7D 0BFF OR EDI,EDI
；IAT RVA
00343A7F 75 05 JNZ SHORT 00343A86
00343A81 E9 A7040000 JMP 00343F2D
00343A86 03BD 0D324000 ADD EDI,DWORD PTR SS:[EBP+40320D]
；+BASE ADDRESS=IAT VA
00343A8C 83C2 05 ADD EDX,5
00343A8F 8BF2 MOV ESI,EDX
；MODULE NAME
00343A91 56 PUSH ESI
00343A92 8D85 CF1C4000 LEA EAX,DWORD PTR SS:[EBP+401CCF]
；=343AA6
00343A98 50 PUSH EAX
00343A99 8B85 01324000 MOV EAX,DWORD PTR SS:[EBP+403201]
；GetModuleNameA
00343A9F E9 87090000 JMP 0034442B
；JMP EAX
00343AA4 FF25 DB FF，25
00343AA6 0BC0 OR EAX,EAX
00343AA8 75 1E JNZ SHORT 00343AC8
00343AAA 56 PUSH ESI
；MODULE NAME
00343AAB 8D85 E81C4000 LEA EAX,DWORD PTR SS:[EBP+401CE8]
；=343ABF
00343AB1 50 PUSH EAX
00343AB2 8B85 05324000 MOV EAX,DWORD PTR SS:[EBP+403205]
；LoadLibraryA
00343AB8 E9 6E090000 JMP 0034442B
；JMP EAX
00343ABD FF15 DB FF，15
00343ABF 0BC0 OR EAX,EAX
00343AC1 75 05 JNZ SHORT 00343AC8
00343AC3 E9 CD0B0000 JMP 00344695
00343AC8 0FB64E FF MOVZX ECX,BYTE PTR DS:[ESI-1]
；MODULE NAME長度
00343ACC 03F1 ADD ESI,ECX
00343ACE 8BD6 MOV EDX,ESI
；
00343AD0 8BF0 MOV ESI,EAX
00343AD2 42 INC EDX
00343AD3 8B0A MOV ECX,DWORD
PTR DS:[EDX] ；本MODULE需引入函式的數目
00343AD5 81E1 00000080 AND ECX,80000000
00343ADB 0BC9 OR ECX,ECX
；是否進行重定位
00343ADD 0F85 87000000 JNZ 00343B6A
；重定位則跳
00343AE3 8B0A MOV ECX,DWORD
PTR DS:[EDX] ；本MODULE需引入函式的數目
00343AE5 83C2 04 ADD EDX,4
00343AE8 51 PUSH ECX
00343AE9 0FB602 MOVZX EAX,BYTE PTR
DS:[EDX] ；PROCNAME LEN
00343AEC 0BC0 OR EAX,EAX
00343AEE 75 27 JNZ SHORT 00343B17
00343AF0 42 INC EDX
；GET BY ORD
00343AF1 52 PUSH EDX
00343AF2 8B02 MOV EAX,DWORD
PTR DS:[EDX] ；ORD
00343AF4 50 PUSH EAX
；
00343AF5 56 PUSH ESI
00343AF6 8D85 331D4000 LEA EAX,DWORD PTR SS:[EBP+401D33]
；=343B0A
00343AFC 50 PUSH EAX
00343AFD 8B85 FD314000 MOV EAX,DWORD PTR SS:[EBP+4031FD]
；GetProcAddress
00343B03 E9 23090000 JMP 0034442B
；JMP EAX
00343B08 8136 DB 81，36
00343B0A E8 D50B0000 CALL 003446E4
；檢測API函式入口是否有INT3斷點
00343B0F 8907 MOV DWORD PTR
DS:[EDI],EAX ；FILL IAT
00343B11 5A POP EDX
00343B12 83C2 04 ADD EDX,4
00343B15 EB 47 JMP SHORT 00343B5E
00343B17 42 INC EDX
；GET BY NAME
00343B18 52 PUSH EDX
00343B19 60 PUSHAD
00343B1A 8BF2 MOV ESI,EDX
00343B1C 8DBD EC354000 LEA EDI,DWORD PTR SS:[EBP+4035EC]
；
00343B22 33C0 XOR EAX,EAX
00343B24 AC LODS BYTE
PTR DS:[ESI]
00343B25 EB 07 JMP SHORT 00343B2E
00343B27 C0C0 03 ROL AL,3
；解密PROCNAME
00343B2A F6D0 NOT AL
00343B2C AA STOS BYTE
PTR ES:[EDI]
00343B2D AC LODS BYTE
PTR DS:[ESI]
00343B2E 0BC0 OR EAX,EAX
00343B30 ^75 F5 JNZ SHORT 00343B27
00343B32 AA STOS BYTE
PTR ES:[EDI]
00343B33 61 POPAD
00343B34 8D95 EC354000 LEA EDX,DWORD PTR SS:[EBP+4035EC]
；解密後的PROCNAME
00343B3A 52 PUSH EDX
00343B3B 56 PUSH ESI
；HANDLE
00343B3C 8D85 791D4000 LEA EAX,DWORD PTR SS:[EBP+401D79]
；=343B50
00343B42 50 PUSH EAX
00343B43 8B85 FD314000 MOV EAX,DWORD PTR SS:[EBP+4031FD]
；GetProcAddress
00343B49 E9 DD080000 JMP 0034442B
；JMP EAX
00343B4E 8137 DB 81，37
00343B50 E8 8F0B0000 CALL 003446E4
；檢測API函式入口是否有INT3斷點
00343B55 8907 MOV DWORD PTR
DS:[EDI],EAX ；FILL IAT
00343B57 5A POP EDX
00343B58 0FB642 FF MOVZX EAX,BYTE PTR DS:[EDX-1]
；PROCNAME LEN
00343B5C 03D0 ADD EDX,EAX
；PROCNAME指向下一項
00343B5E 42 INC EDX
00343B5F 83C7 04 ADD EDI,4
；IAT指向下一項
00343B62 59 POP ECX
00343B63 ^E2 83 LOOPD SHORT
00343AE8
00343B65 E9 BE030000 JMP 00343F28
00343B6A 8B0A MOV ECX,DWORD
PTR DS:[EDX] ；重定位處理開始
00343B6C 81E1 FFFFFF7F AND ECX,7FFFFFFF
00343B72 51 PUSH ECX
；函式數目
00343B73 52 PUSH EDX
00343B74 C1E1 05 SHL ECX,5
；每個函式佔用32位元組重定位空間
00343B77 6A 04 PUSH 4
00343B79 68 00100000 PUSH 1000
00343B7E 51 PUSH ECX
00343B7F 6A 00 PUSH 0
00343B81 8D85 BD1D4000 LEA EAX,DWORD PTR SS:[EBP+401DBD]
；=343B94
00343B87 50 PUSH EAX
00343B88 8B85 09324000 MOV EAX,DWORD PTR SS:[EBP+403209]
；VirtualAlloc
00343B8E E9 98080000 JMP 0034442B
00343B93 E8 DB E8
00343B94 8985 4D324000 MOV DWORD PTR SS:[EBP+40324D],EAX
；為第一層重定位分配的空間
00343B9A 5A POP EDX
00343B9B 59 POP ECX
00343B9C 50 PUSH EAX
00343B9D 51 PUSH ECX
00343B9E 2BBD 0D324000 SUB EDI,DWORD PTR SS:[EBP+40320D]
；BASE ADDRESS
00343BA4 83FF FF CMP EDI,-1
00343BA7 74 15 JE SHORT 00343BBE
00343BA9 03BD 0D324000 ADD EDI,DWORD PTR SS:[EBP+40320D]
00343BAF EB 09 JMP SHORT 00343BBA
00343BB1 8907 MOV DWORD PTR
DS:[EDI],EAX ；往IAT中填充第一層重定位的函式地址
00343BB3 83C0 20 ADD EAX,20
00343BB6 83C7 04 ADD EDI,4
00343BB9 49 DEC ECX
00343BBA 0BC9 OR ECX,ECX
00343BBC ^75 F3 JNZ SHORT 00343BB1
00343BBE 59 POP ECX
00343BBF 58 POP EAX
00343BC0 8BF8 MOV EDI,EAX
00343BC2 57 PUSH EDI
00343BC3 51 PUSH ECX
00343BC4 EB 2D JMP SHORT 00343BF3
00343BC6 8D47 1C LEA EAX,DWORD PTR
DS:[EDI+1C] ；REAL_PROC_ADDR
00343BC9 66:C707 FF35 MOV WORD PTR DS:[EDI],35FF
；PUSH DWORD PTR [REAL_PROC_ADDR]
00343BCE C747 06 81342400 MOV DWORD PTR DS:[EDI+6],243481
；XOR DWORD PTR [ESP],XORKEY
00343BD5 8947 02 MOV DWORD PTR DS:[EDI+2],EAX
；RET
00343BD8 C647 0D C3 MOV BYTE PTR DS:[EDI+D],0C3
；
00343BDC 52 PUSH EDX
00343BDD 0F31 RDTSC
00343BDF 32E0 XOR AH,AL
00343BE1 C1C8 08 ROR EAX,8
00343BE4 02E0 ADD AH,AL
00343BE6 C1C8 08 ROR EAX,8
00343BE9 32E0 XOR AH,AL
00343BEB 8947 09 MOV DWORD PTR DS:[EDI+9],EAX
；XORKEY
00343BEE 5A POP EDX
00343BEF 83C7 20 ADD EDI,20
00343BF2 49 DEC ECX
00343BF3 0BC9 OR ECX,ECX
00343BF5 ^75 CF JNZ SHORT 00343BC6
；上面一段是FILL REDIR CODE
00343BF7 59 POP ECX
00343BF8 5F POP EDI
00343BF9 83C2 04 ADD EDX,4
00343BFC 51 PUSH ECX
00343BFD 0FB602 MOVZX EAX,BYTE PTR
DS:[EDX]
00343C00 0BC0 OR EAX,EAX
00343C02 75 2D JNZ SHORT 00343C31
00343C04 42 INC EDX
；GET BY ORD
00343C05 52 PUSH EDX
00343C06 8B02 MOV EAX,DWORD
PTR DS:[EDX]
00343C08 50 PUSH EAX
；ORD
00343C09 56 PUSH ESI
；HANDLE
00343C0A 8D85 461E4000 LEA EAX,DWORD PTR SS:[EBP+401E46]
；=343C1D
00343C10 50 PUSH EAX
00343C11 8B85 FD314000 MOV EAX,DWORD PTR SS:[EBP+4031FD]
；GetProcAddress
00343C17 E9 0F080000 JMP 0034442B
；JMP EAX
00343C1C E9 DB E9
00343C1D E8 C20A0000 CALL 003446E4
；檢測API函式入口是否有INT3斷點
00343C22 3347 06 XOR EAX,DWORD PTR
DS:[EDI+6] ；REAL_PROC_ADDR XOR XOR KEY
00343C25 8947 1C MOV DWORD PTR DS:[EDI+1C],EAX
；
00343C28 5A POP EDX
00343C29 83C2 04 ADD EDX,4
00343C2C E9 EB020000 JMP 00343F1C
00343C31 42 INC EDX
；GET BY NAME
00343C32 52 PUSH EDX
00343C33 60 PUSHAD
00343C34 8BF2 MOV ESI,EDX
00343C36 8DBD EC354000 LEA EDI,DWORD PTR SS:[EBP+4035EC]
00343C3C 33C0 XOR EAX,EAX
00343C3E 0FB64E FF MOVZX ECX,BYTE PTR DS:[ESI-1]
；PROCNAME LEN
00343C42 EB 0E JMP SHORT 00343C52
00343C44 AC LODS BYTE
PTR DS:[ESI]
00343C45 34 79 XOR AL,79
；解密PROCNAME
00343C47 2C 55 SUB AL,55
00343C49 C0C0 03 ROL AL,3
00343C4C F6D0 NOT AL
00343C4E AA STOS BYTE
PTR ES:[EDI]
00343C4F 49 DEC ECX
00343C50 33C0 XOR EAX,EAX
00343C52 0BC9 OR ECX,ECX
00343C54 ^75 EE JNZ SHORT 00343C44
00343C56 AA STOS BYTE
PTR ES:[EDI]
00343C57 61 POPAD
下面有一串的lstrcmpiA用來比較API NAME，我想是用來做SDK的，本程式應該沒用到SDK，我就不跟蹤分析了
當比較到是SDK用的API時，就直接取SDK的入口，不用GetProcAddress取API函式地址了
00343C58 8D95 EC354000 LEA EDX,DWORD PTR SS:[EBP+4035EC]
；解密後的PROCNAME
00343C5E 52 PUSH EDX
00343C5F 52 PUSH EDX
00343C60 8D85 EF344000 LEA EAX,DWORD PTR SS:[EBP+4034EF]
；LoadLibraryA
00343C66 50 PUSH EAX
00343C67 8D85 A31E4000 LEA EAX,DWORD PTR SS:[EBP+401EA3]
；=343C7A
00343C6D 50 PUSH EAX
00343C6E 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343C74 E9 B2070000 JMP 0034442B
；JMP EAX
00343C79 E9 DB E9
00343C7A 5A POP EDX
00343C7B 85C0 TEST EAX,EAX
00343C7D 75 0B JNZ SHORT 00343C8A
00343C7F 8D85 B32B4000 LEA EAX,DWORD PTR SS:[EBP+402BB3]
00343C85 E9 85020000 JMP 00343F0F
00343C8A 52 PUSH EDX
00343C8B 52 PUSH EDX
；解密後的PROCNAME
00343C8C 8D85 E0344000 LEA EAX,DWORD PTR SS:[EBP+4034E0]
；GetProcAddress
00343C92 50 PUSH EAX
00343C93 8D85 CF1E4000 LEA EAX,DWORD PTR SS:[EBP+401ECF]
；=343CA6
00343C99 50 PUSH EAX
00343C9A 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343CA0 E9 86070000 JMP 0034442B
；JMP EAX
00343CA5 E9 DB E9
00343CA6 5A POP EDX
00343CA7 85C0 TEST EAX,EAX
00343CA9 75 0B JNZ SHORT 00343CB6
00343CAB 8D85 BA2B4000 LEA EAX,DWORD PTR SS:[EBP+402BBA]
00343CB1 E9 59020000 JMP 00343F0F
00343CB6 52 PUSH EDX
00343CB7 52 PUSH EDX
00343CB8 8D85 5C334000 LEA EAX,DWORD PTR SS:[EBP+40335C]
；GetVersion
00343CBE 50 PUSH EAX
00343CBF 8D85 FB1E4000 LEA EAX,DWORD PTR SS:[EBP+401EFB]
；=343CD2
00343CC5 50 PUSH EAX
00343CC6 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343CCC E9 5A070000 JMP 0034442B
；JMP EAX
00343CD1 E9 DB E9
00343CD2 5A POP EDX
00343CD3 85C0 TEST EAX,EAX
00343CD5 0F85 C2010000 JNZ 00343E9D
00343CDB 75 0B JNZ SHORT 00343CE8
00343CDD 8D85 C12B4000 LEA EAX,DWORD PTR SS:[EBP+402BC1]
00343CE3 E9 27020000 JMP 00343F0F
00343CE8 52 PUSH EDX
00343CE9 52 PUSH EDX
00343CEA 8D85 68334000 LEA EAX,DWORD PTR SS:[EBP+403368]
；
00343CF0 50 PUSH EAX
00343CF1 8D85 2D1F4000 LEA EAX,DWORD PTR SS:[EBP+401F2D]
；=343D04
00343CF7 50 PUSH EAX
00343CF8 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343CFE E9 28070000 JMP 0034442B
00343D03 E9 DB E9
00343D04 5A POP EDX
00343D05 85C0 TEST EAX,EAX
00343D07 75 0B JNZ SHORT 00343D14
00343D09 8D85 C82B4000 LEA EAX,DWORD PTR SS:[EBP+402BC8]
00343D0F E9 FB010000 JMP 00343F0F
00343D14 52 PUSH EDX
00343D15 52 PUSH EDX
00343D16 8D85 8E334000 LEA EAX,DWORD PTR SS:[EBP+40338E]
00343D1C 50 PUSH EAX
00343D1D 8D85 591F4000 LEA EAX,DWORD PTR SS:[EBP+401F59]
；343D30
00343D23 50 PUSH EAX
00343D24 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343D2A E9 FC060000 JMP 0034442B
00343D2F E9 DB E9
00343D30 5A POP EDX
00343D31 85C0 TEST EAX,EAX
00343D33 75 0B JNZ SHORT 00343D40
00343D35 8D85 CF2B4000 LEA EAX,DWORD PTR SS:[EBP+402BCF]
00343D3B E9 CF010000 JMP 00343F0F
00343D40 52 PUSH EDX
00343D41 52 PUSH EDX
00343D42 8D85 A1334000 LEA EAX,DWORD PTR SS:[EBP+4033A1]
00343D48 50 PUSH EAX
00343D49 8D85 851F4000 LEA EAX,DWORD PTR SS:[EBP+401F85]
；=343D5C
00343D4F 50 PUSH EAX
00343D50 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343D56 E9 D0060000 JMP 0034442B
00343D5B E9 DB E9
00343D5C 5A POP EDX
00343D5D 85C0 TEST EAX,EAX
00343D5F 75 0B JNZ SHORT 00343D6C
00343D61 8D85 0C2C4000 LEA EAX,DWORD PTR SS:[EBP+402C0C]
00343D67 E9 A3010000 JMP 00343F0F
00343D6C 52 PUSH EDX
00343D6D 52 PUSH EDX
00343D6E 8D85 B6334000 LEA EAX,DWORD PTR SS:[EBP+4033B6]
00343D74 50 PUSH EAX
00343D75 8D85 B11F4000 LEA EAX,DWORD PTR SS:[EBP+401FB1]
；=343D88
00343D7B 50 PUSH EAX
00343D7C 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343D82 E9 A4060000 JMP 0034442B
00343D87 E9 DB E9
00343D88 5A POP EDX
00343D89 85C0 TEST EAX,EAX
00343D8B 75 0B JNZ SHORT 00343D98
00343D8D 8D85 392C4000 LEA EAX,DWORD PTR SS:[EBP+402C39]
00343D93 E9 77010000 JMP 00343F0F
00343D98 52 PUSH EDX
00343D99 52 PUSH EDX
00343D9A 8D85 FC344000 LEA EAX,DWORD PTR SS:[EBP+4034FC]
00343DA0 50 PUSH EAX
00343DA1 8D85 DD1F4000 LEA EAX,DWORD PTR SS:[EBP+401FDD]
；=343DB4
00343DA7 50 PUSH EAX
00343DA8 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343DAE E9 78060000 JMP 0034442B
00343DB3 E9 DB E9
00343DB4 5A POP EDX
00343DB5 85C0 TEST EAX,EAX
00343DB7 75 0B JNZ SHORT 00343DC4
00343DB9 8D85 B82C4000 LEA EAX,DWORD PTR SS:[EBP+402CB8]
00343DBF E9 4B010000 JMP 00343F0F
00343DC4 52 PUSH EDX
00343DC5 52 PUSH EDX
00343DC6 8D85 09354000 LEA EAX,DWORD PTR SS:[EBP+403509]
00343DCC 50 PUSH EAX
00343DCD 8D85 09204000 LEA EAX,DWORD PTR SS:[EBP+402009]
；=343DE0
00343DD3 50 PUSH EAX
00343DD4 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343DDA E9 4C060000 JMP 0034442B
00343DDF E9 DB E9
00343DE0 5A POP EDX
00343DE1 85C0 TEST EAX,EAX
00343DE3 75 0B JNZ SHORT 00343DF0
00343DE5 8D85 B82C4000 LEA EAX,DWORD PTR SS:[EBP+402CB8]
00343DEB E9 1F010000 JMP 00343F0F
00343DF0 52 PUSH EDX
00343DF1 52 PUSH EDX
00343DF2 8D85 44334000 LEA EAX,DWORD PTR SS:[EBP+403344]
00343DF8 50 PUSH EAX
00343DF9 8D85 35204000 LEA EAX,DWORD PTR SS:[EBP+402035]
；=343E0C
00343DFF 50 PUSH EAX
00343E00 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343E06 E9 20060000 JMP 0034442B
00343E0B E9 DB E9
00343E0C 5A POP EDX
00343E0D 85C0 TEST EAX,EAX
00343E0F 75 0B JNZ SHORT 00343E1C
00343E11 8D85 402C4000 LEA EAX,DWORD PTR SS:[EBP+402C40]
00343E17 E9 F3000000 JMP 00343F0F
00343E1C 52 PUSH EDX
00343E1D 52 PUSH EDX
00343E1E 8D85 16354000 LEA EAX,DWORD PTR SS:[EBP+403516]
；lstrcmpiA
00343E24 50 PUSH EAX
00343E25 8D85 61204000 LEA EAX,DWORD PTR SS:[EBP+402061]
；=343E38
00343E2B 50 PUSH EAX
00343E2C 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
00343E32 E9 F4050000 JMP 0034442B
00343E37 E9 DB E9
00343E38 5A POP EDX
00343E39 85C0 TEST EAX,EAX
00343E3B 75 0B JNZ SHORT 00343E48
00343E3D 8D85 442C4000 LEA EAX,DWORD PTR SS:[EBP+402C44]
00343E43 E9 C7000000 JMP 00343F0F
00343E48 52 PUSH EDX
00343E49 52 PUSH EDX
00343E4A 8D85 26354000 LEA EAX,DWORD PTR SS:[EBP+403526]
00343E50 50 PUSH EAX
00343E51 8D85 8D204000 LEA EAX,DWORD PTR SS:[EBP+40208D]
；=343E64
00343E57 50 PUSH EAX
00343E58 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343E5E E9 C8050000 JMP 0034442B
00343E63 E9 DB E9
00343E64 5A POP EDX
00343E65 85C0 TEST EAX,EAX
00343E67 75 0B JNZ SHORT 00343E74
00343E69 8D85 7E2C4000 LEA EAX,DWORD PTR SS:[EBP+402C7E]
00343E6F E9 9B000000 JMP 00343F0F
00343E74 52 PUSH EDX
00343E75 52 PUSH EDX
00343E76 8D85 02334000 LEA EAX,DWORD PTR SS:[EBP+403302]
00343E7C 50 PUSH EAX
00343E7D 8D85 B9204000 LEA EAX,DWORD PTR SS:[EBP+4020B9]
；=343E90
00343E83 50 PUSH EAX
00343E84 8B85 51334000 MOV EAX,DWORD PTR SS:[EBP+403351]
；lstrcmpiA
00343E8A E9 9C050000 JMP 0034442B
00343E8F E9 DB E9
00343E90 5A POP EDX
00343E91 85C0 TEST EAX,EAX
00343E93 75 08 JNZ SHORT 00343E9D
00343E95 8D85 BC2C4000 LEA EAX,DWORD PTR SS:[EBP+402CBC]
00343E9B EB 72 JMP SHORT 00343F0F
完成對SDK所用的API的檢測，來到這裡：
00343E9D 52 PUSH EDX
；PROC NAME
00343E9E 56 PUSH ESI
；HANDLE
00343E9F 8D85 DB204000 LEA EAX,DWORD PTR SS:[EBP+4020DB]
；=343EB2
00343EA5 50 PUSH EAX
00343EA6 8B85 FD314000 MOV EAX,DWORD PTR SS:[EBP+4031FD]
；GetProcAddress
00343EAC E9 7A050000 JMP 0034442B
00343EB1 75 DB 75
00343EB2 8B9D E1364000 MOV EBX,DWORD PTR SS:[EBP+4036E1]
；第二層重定位基地址
00343EB8 039D E5364000 ADD EBX,DWORD PTR SS:[EBP+4036E5]
；第二層重定位相對地址
00343EBE 53 PUSH EBX
00343EBF 50 PUSH EAX
00343EC0 53 PUSH EBX
00343EC1 E8 7A050000 CALL 00344440
；填充第二層重定位程式碼，把部分API程式碼移過來
00343EC6 2B85 E1364000 SUB EAX,DWORD PTR SS:[EBP+4036E1]
00343ECC 8985 E5364000 MOV DWORD PTR SS:[EBP+4036E5],EAX
；調整第二層重定位相對地址
00343ED2 60 PUSHAD
00343ED3 3D C01F0000 CMP EAX,1FC0
；邊界檢測
00343ED8 76 31 JBE SHORT 00343F0B
00343EDA 6A 04 PUSH 4
；空間用完，要再分配一段
00343EDC 68 00100000 PUSH 1000
00343EE1 68 00200000 PUSH 2000
00343EE6 6A 00 PUSH 0
00343EE8 8D85 24214000 LEA EAX,DWORD PTR SS:[EBP+402124]
；=343EFB
00343EEE 50 PUSH EAX
00343EEF 8B85 09324000 MOV EAX,DWORD PTR SS:[EBP+403209]
；VirtualAlloc
00343EF5 E9 31050000 JMP 0034442B
00343EFA EB DB EB
00343EFB 8985 E1364000 MOV DWORD PTR SS:[EBP+4036E1],EAX
；新增加的空間
00343F01 C785 E5364000 00>MOV DWORD PTR SS:[EBP+4036E5],0
；
00343F0B 61 POPAD
00343F0C 5B POP EBX
00343F0D 8BC3 MOV EAX,EBX
00343F0F 3347 09 XOR EAX,DWORD PTR
DS:[EDI+9] ；
00343F12 8947 1C MOV DWORD PTR DS:[EDI+1C],EAX
；
00343F15 5A POP EDX
00343F16 0FB642 FF MOVZX EAX,BYTE PTR DS:[EDX-1]
；
00343F1A 03D0 ADD EDX,EAX
00343F1C 42 INC EDX
00343F1D 83C7 20 ADD EDI,20
；
00343F20 59 POP ECX
00343F21 49 DEC ECX
00343F22 ^0F85 D4FCFFFF JNZ 00343BFC
00343F28 ^E9 4EFBFFFF JMP 00343A7B
到這裡IAT的處理結束，對於想要完成脫殼的人，仔細研究一下是有用的，因為最終只要想辦法去掉它的重定位程式碼，
把原始的API函式地址添到正確的IAT處，就可以用工具很方便的修復重建IAT了，可以在殼裡修改，也可以自己程式設計序
處理。但現在還是不要改它的程式碼，因為還有個校驗值的問題，等我們得到真實的校驗值後記下來就可以任意改程式碼了。
繼續往下分析：
00343F2D B9 00010000 MOV ECX,100
00343F32 2BE1 SUB ESP,ECX
；LOCAL VAR
00343F34 8BF4 MOV ESI,ESP
00343F36 8BFC MOV EDI,ESP
00343F38 C1E9 02 SHR ECX,2
00343F3B 33C0 XOR EAX,EAX
00343F3D F3:AB REP STOS DWORD
PTR ES:[EDI]
00343F3F 68 00010000 PUSH 100
；LEN
00343F44 56 PUSH ESI
；BUFFER
00343F45 8B85 0D324000 MOV EAX,DWORD PTR SS:[EBP+40320D]
；HANDLE
00343F4B 50 PUSH EAX
00343F4C 8D85 88214000 LEA EAX,DWORD PTR SS:[EBP+402188]
；=343F5F
00343F52 50 PUSH EAX
00343F53 8B85 7A334000 MOV EAX,DWORD PTR SS:[EBP+40337A]
；GetModuleFileNameA
00343F59 E9 CD040000 JMP 0034442B
00343F5E E9 DB E9
00343F5F 6A 00 PUSH 0
00343F61 68 80000000 PUSH 80
00343F66 6A 03 PUSH 3
00343F68 6A 00 PUSH 0
00343F6A 6A 03 PUSH 3
00343F6C 68 00000080 PUSH 80000000
00343F71 56 PUSH ESI
；FILENAME
00343F72 8D85 AE214000 LEA EAX,DWORD PTR SS:[EBP+4021AE]
；=343F85
00343F78 50 PUSH EAX
00343F79 8B85 2A334000 MOV EAX,DWORD PTR SS:[EBP+40332A]
；CreateFileA
00343F7F E9 A7040000 JMP 0034442B
00343F84 E9 DB E9
00343F85 8BD8 MOV EBX,EAX
00343F87 81C4 00010000 ADD ESP,100
00343F8D 6A 00 PUSH 0
00343F8F 53 PUSH EBX
00343F90 8D85 CC214000 LEA EAX,DWORD PTR SS:[EBP+4021CC]
；=343FA3
00343F96 50 PUSH EAX
00343F97 8B85 37334000 MOV EAX,DWORD PTR SS:[EBP+403337]
；GetFileSize
00343F9D E9 89040000 JMP 0034442B
00343FA2 E9 DB E9
00343FA3 8985 11324000 MOV DWORD PTR SS:[EBP+403211],EAX
00343FA9 6A 00 PUSH 0
00343FAB FFB5 11324000 PUSH DWORD PTR SS:[EBP+403211]
；FILESIZE
00343FB1 6A 00 PUSH 0
00343FB3 6A 02 PUSH 2
00343FB5 6A 00 PUSH 0
00343FB7 53 PUSH EBX
；hHandle
00343FB8 8D85 F4214000 LEA EAX,DWORD PTR SS:[EBP+4021F4]
；=343FCB
00343FBE 50 PUSH EAX
00343FBF 8B85 E4334000 MOV EAX,DWORD PTR SS:[EBP+4033E4]
；CreateFileMappingA
00343FC5 E9 61040000 JMP 0034442B
00343FCA E9 DB E9
00343FCB 8985 15324000 MOV DWORD PTR SS:[EBP+403215],EAX
00343FD1 6A 00 PUSH 0
00343FD3 6A 00 PUSH 0
00343FD5 6A 00 PUSH 0
00343FD7 6A 04 PUSH 4
00343FD9 FFB5 15324000 PUSH DWORD PTR SS:[EBP+403215]
；hMapping
00343FDF 8D85 1B224000 LEA EAX,DWORD PTR SS:[EBP+40221B]
；=343FF1
00343FE5 50 PUSH EAX
00343FE6 8B85 F8334000 MOV EAX,DWORD PTR SS:[EBP+4033F8]
；MapViewOfFile
00343FEC E9 3A040000 JMP 0034442B
00343FF1 E9 DB E9
00343FF2 8985 19324000 MOV DWORD PTR SS:[EBP+403219],EAX
；pMapping
00343FF8 8B40 3C MOV EAX,DWORD PTR
DS:[EAX+3C] ；e_lfanew
00343FFB BA CCC6C3F7 MOV EDX,F7C3C6CC
00344000 8B8D 11324000 MOV ECX,DWORD PTR SS:[EBP+403211]
；FILESIZE
00344006 2BC8 SUB ECX,EAX
00344008 8BB5 19324000 MOV ESI,DWORD PTR SS:[EBP+403219]
0034400E 03F0 ADD ESI,EAX
；pIMAGE_NT_HEADERS
00344010 33C0 XOR EAX,EAX
00344012 51 PUSH ECX
00344013 C1E9 02 SHR ECX,2
00344016 AD LODS DWORD
PTR DS:[ESI]
00344017 33D0 XOR EDX,EAX
00344019 D3C2 ROL EDX,CL
0034401B 49 DEC ECX
0034401C ^75 F8 JNZ SHORT 00344016
0034401E 59 POP ECX
0034401F 83E1 03 AND ECX,3
00344022 74 0D JE SHORT 00344031
00344024 33C0 XOR EAX,EAX
00344026 C1E0 08 SHL EAX,8
00344029 8A06 MOV AL,BYTE PTR
DS:[ESI]
0034402B 46 INC ESI
0034402C 49 DEC ECX
0034402D ^75 F7 JNZ SHORT 00344026
0034402F 33D0 XOR EDX,EAX
00344031 8BF2 MOV ESI,EDX
；FILE CRC
00344033 8B85 19324000 MOV EAX,DWORD PTR SS:[EBP+403219]
00344039 0340 3C ADD EAX,DWORD PTR
DS:[EAX+3C]
0034403C 8B78 FC MOV EDI,DWORD PTR
DS:[EAX-4] ；OLD CRC
0034403F FFB5 19324000 PUSH DWORD PTR SS:[EBP+403219]
；pMapping
00344045 8D85 81224000 LEA EAX,DWORD PTR SS:[EBP+402281]
；=344052
0034404B 50 PUSH EAX
0034404C 8B85 07344000 MOV EAX,DWORD PTR SS:[EBP+403407]
；UnMapViewOfFile
00344051 E9 DB E9
00344052 E9 D4030000 JMP 0034442B
00344058 FFB5 15324000 PUSH DWORD PTR SS:[EBP+403215]
；hMapping
0034405E 8D85 9A224000 LEA EAX,DWORD PTR SS:[EBP+40229A]
；=344071
00344064 50 PUSH EAX
00344065 8B85 18344000 MOV EAX,DWORD PTR SS:[EBP+403418]
；CloseHandle
0034406B E9 BB030000 JMP 0034442B
00344070 E9 DB E9
00344071 53 PUSH EBX
；hHandle
00344072 8D85 AE224000 LEA EAX,DWORD PTR SS:[EBP+4022AE]
；=344085
00344078 50 PUSH EAX
00344079 8B85 18344000 MOV EAX,DWORD PTR SS:[EBP+403418]
；CloseHandle
0034407F E9 A7030000 JMP 0034442B
00344084 E9 DB E9
00344085 8B85 21324000 MOV EAX,DWORD PTR SS:[EBP+403221]
；是否進行CRC驗證
0034408B 83F8 01 CMP EAX,1
；我們這個程式竟然不需要CRC驗證，有意寬容嗎？
0034408E 75 08 JNZ SHORT 00344098
00344090 3BF7 CMP ESI,EDI
；CRC驗證
00344092 0F85 3F140000 JNZ 003454D7
；不等...你就玩去了
00344098 8D85 D4224000 LEA EAX,DWORD PTR SS:[EBP+4022D4]
；=3440AB
0034409E 50 PUSH EAX
0034409F 8B85 5C334000 MOV EAX,DWORD PTR SS:[EBP+40335C]
；GetVersion
003440A5 E9 81030000 JMP 0034442B
003440AA E9 DB E9
003440AB 8985 39354000 MOV DWORD PTR SS:[EBP+403539],EAX
003440B1 8D85 ED224000 LEA EAX,DWORD PTR SS:[EBP+4022ED]
；=3440C4
003440B7 50 PUSH EAX
003440B8 8B85 8E334000 MOV EAX,DWORD PTR SS:[EBP+40338E]
；GetCurrentProcess
003440BE E9 68030000 JMP 0034442B
003440C3 E9 DB E9
003440C4 8985 41354000 MOV DWORD PTR SS:[EBP+403541],EAX
003440CA 8D85 06234000 LEA EAX,DWORD PTR SS:[EBP+402306]
；=3440DD
003440D0 50 PUSH EAX
003440D1 8B85 A1334000 MOV EAX,DWORD PTR SS:[EBP+4033A1]
；GetCurrentProcess
003440D7 E9 4F030000 JMP 0034442B
003440DC E9 DB E9
003440DD 8985 45354000 MOV DWORD PTR SS:[EBP+403545],EAX
003440E3 8D85 1F234000 LEA EAX,DWORD PTR SS:[EBP+40231F]
；=3440F6
003440E9 50 PUSH EAX
003440EA 8B85 B6334000 MOV EAX,DWORD PTR SS:[EBP+4033B6]
；GetCommandLineA
003440F0 E9 36030000 JMP 0034442B
003440F5 E9 DB E9
003440F6 8985 49354000 MOV DWORD PTR SS:[EBP+403549],EAX
003440FC 6A 00 PUSH 0
003440FE 8D85 3A234000 LEA EAX,DWORD PTR SS:[EBP+40233A]
；=344111
00344104 50 PUSH EAX
00344105 8B85 68334000 MOV EAX,DWORD PTR SS:[EBP+403368]
；GetModuleHandleA
0034410B E9 1B030000 JMP 0034442B
00344110 E9 DB E9
00344111 8985 3D354000 MOV DWORD PTR SS:[EBP+40353D],EAX
00344117 8B85 39354000 MOV EAX,DWORD PTR SS:[EBP+403539]
；Version
0034411D 3D 00000080 CMP EAX,80000000
00344122 73 16 JNB SHORT 0034413A
；TO WIN9X
00344124 64:FF35 30000000 PUSH DWORD PTR FS:[30]
；NT
0034412B 58 POP EAX
；pointer to PEB
0034412C 0FB658 02 MOVZX EBX,BYTE PTR DS:[EAX+2]
00344130 0ADB OR BL,BL
；檢測應用程式級debugger，用OD跟蹤一定要注意這裡
00344132 0F85 9F130000 JNZ 003454D7
；這裡是本殼中唯一對OllyDBG有威脅的地方
00344138 EB 2A JMP SHORT 00344164
0034413A 50 PUSH EAX
；9X
0034413B 0F014C24 FE SIDT FWORD PTR SS:[ESP-2]
00344140 5B POP EBX
；IDT
00344141 83C3 18 ADD EBX,18
00344144 8B4B 04 MOV ECX,DWORD PTR
DS:[EBX+4] ；INT3
00344147 66:8B0B MOV CX,WORD PTR DS:[EBX]
0034414A 8B53 0C MOV EDX,DWORD PTR
DS:[EBX+C] ；INT4
0034414D 66:8B53 08 MOV DX,WORD PTR DS:[EBX+8]
00344151 8B43 14 MOV EAX,DWORD PTR
DS:[EBX+14] ；INT5
00344154 66:8B43 10 MOV AX,WORD PTR DS:[EBX+10]
00344158 2BC2 SUB EAX,EDX
；系統初始化的INT3和INT4，INT5的中斷向量
0034415A 2BD1 SUB EDX,ECX
；應該在一個模組內，正常應該有相同的高位字
0034415C 2BC2 SUB EAX,EDX
；一般的DEBUGGER要改INT3，可能不改INT4和INT5
0034415E 0F85 73130000 JNZ 003454D7
；檢測INT3的中斷向量是否被改過，對檢測TRW很有效
00344164 8BB5 2D324000 MOV ESI,DWORD PTR SS:[EBP+40322D]
0034416A 0BF6 OR ESI,ESI
0034416C 74 4C JE SHORT 003441BA
；這裡是自動跳過去了
0034416E 03B5 0D324000 ADD ESI,DWORD PTR SS:[EBP+40320D]
；中間這段幹什麼的，我沒跟蹤說不太準
00344174 8BBD 0D324000 MOV EDI,DWORD PTR SS:[EBP+40320D]
；注意一下[EBP+40320D]，[EBP+403229]這兩個量，
0034417A 8BDF MOV EBX,EDI
；一個是當前基地址，一個是加殼前的基地址，經常做減法
0034417C 2BBD 29324000 SUB EDI,DWORD PTR SS:[EBP+403229]
；對於EXE，都是400000，可以不必理會
00344182 0FB606 MOVZX EAX,BYTE PTR
DS:[ESI] ；以後碰到就不再說明了
00344185 EB 2F JMP SHORT 003441B6
00344187 3C 01 CMP AL,1
00344189 75 15 JNZ SHORT 003441A0
0034418B 46 INC ESI
0034418C 0FB606 MOVZX EAX,BYTE PTR
DS:[ESI]
0034418F 3C 02 CMP AL,2
00344191 75 08 JNZ SHORT 0034419B
00344193 46 INC ESI
00344194 031E ADD EBX,DWORD
PTR DS:[ESI]
00344196 83C6 04 ADD ESI,4
00344199 EB 18 JMP SHORT 003441B3
0034419B 46 INC ESI
0034419C 03D8 ADD EBX,EAX
0034419E EB 13 JMP SHORT 003441B3
003441A0 3C 02 CMP AL,2
003441A2 75 0A JNZ SHORT 003441AE
003441A4 46 INC ESI
003441A5 031E ADD EBX,DWORD
PTR DS:[ESI]
003441A7 013B ADD DWORD PTR
DS:[EBX],EDI
003441A9 83C6 04 ADD ESI,4
003441AC EB 05 JMP SHORT 003441B3
003441AE 46 INC ESI
003441AF 03D8 ADD EBX,EAX
003441B1 013B ADD DWORD PTR
DS:[EBX],EDI
003441B3 0FB606 MOVZX EAX,BYTE PTR
DS:[ESI]
003441B6 0AC0 OR AL,AL
003441B8 ^75 CD JNZ SHORT 00344187
跳過上面那段不明程式碼，來到這裡：
003441BA 8CC9 MOV CX,CS
；用段選擇器檢測版本
003441BC 32C9 XOR CL,CL
；我以前沒注意到過這種方式
003441BE 0BC9 OR ECX,ECX
；細節我不清楚
003441C0 74 32 JE SHORT 003441F4
003441C2 50 PUSH EAX
003441C3 0F014C24 FE SIDT FWORD PTR SS:[ESP-2]
003441C8 5F POP EDI
003441C9 83C7 20 ADD EDI,20
003441CC 8B4F 04 MOV ECX,DWORD PTR
DS:[EDI+4]
003441CF 66:8B0F MOV CX,WORD PTR DS:[EDI]
003441D2 FA CLI
003441D3 8DB5 E9364000 LEA ESI,DWORD PTR SS:[EBP+4036E9]
；NEW INT4 入口=3454C0
003441D9 66:8937 MOV WORD PTR DS:[EDI],SI
003441DC C1EE 10 SHR ESI,10
003441DF 66:8977 06 MOV WORD PTR DS:[EDI+6],SI
003441E3 FB STI
003441E4 CD 04 INT 4
003441E6 FA CLI
003441E7 66:890F MOV WORD PTR DS:[EDI],CX
003441EA C1E9 10 SHR ECX,10
003441ED 66:894F 06 MOV WORD PTR DS:[EDI+6],CX
003441F1 FB STI
003441F2 EB 37 JMP SHORT 0034422B
；======為方便大家看，把INT4的處理附在這裡============================================
003454C0 60 PUSHAD
；NEW INT4 入口
003454C1 CD 20 INT 20
；VMMcall
003454C3 3F010100 DD 1013F
；VMM_GetDDBList
003454C7 75 02 JNZ SHORT 003454CB
003454C9 CD 19 INT 19
；REBOOT
003454CB CD 20 INT 20
；VMMcall
003454CD C1000100 DD 100C1
；Test_Debug_Installed
003454D1 74 02 JE SHORT 003454D5
003454D3 CD 19 INT 19
；REBOOT
003454D5 61 POPAD
003454D6 CF IRETD
；============================================================================
WIN2000下直接來到這裡：
003441F4 E8 0E000000 CALL 00344207
003441F9 8B4C24 0C MOV ECX,DWORD PTR SS:[ESP+C]
003441FD 8381 B8000000 02 ADD DWORD PTR DS:[ECX+B8],2
；regEIP+2
00344204 33C0 XOR EAX,EAX
00344206 C3 RETN
00344207 64:FF35 00000000 PUSH DWORD PTR FS:[0]
0034420E 64:8925 00000000 MOV DWORD PTR FS:[0],ESP
00344215 33C0 XOR EAX,EAX
00344217 CD 01 INT 1
；SEH
00344219 40 INC EAX
0034421A 40 INC EAX
；
0034421B 0BC0 OR EAX,EAX
；2000的SEH會返回到這裡，EAX=0；9X下EAX=1
0034421D 64:8F05 00000000 POP DWORD PTR FS:[0]
00344224 58 POP EAX
00344225 0F84 AC120000 JE 003454D7
在34422B處F2下斷點，F9執行到這裡，然後我還是習慣把斷點清掉：
0034422B 8B85 39324000 MOV EAX,DWORD PTR SS:[EBP+403239]
；加密標誌：JMP DWORD PTR [XXXXXXX]
00344231 83F8 01 CMP EAX,1
；======= FF 25 XX XX XX XX
00344234 75 3D JNZ SHORT 00344273
00344236 8DBD 2E164000 LEA EDI,DWORD PTR SS:[EBP+40162E]
；
0034423C 03BD 55324000 ADD EDI,DWORD PTR SS:[EBP+403255]
；加密的子項表格：（VA，KEY）
00344242 8DB5 DE274000 LEA ESI,DWORD PTR SS:[EBP+4027DE]
；=3445B5，HOOK函式的入口，解密後再完成原呼叫
00344248 8B07 MOV EAX,DWORD
PTR DS:[EDI] ；取出一項VA
0034424A 0BC0 OR EAX,EAX
0034424C 75 02 JNZ SHORT 00344250
0034424E EB 23 JMP SHORT 00344273
00344250 25 FFFFFF7F AND EAX,7FFFFFFF
；等於此JMP程式碼地址+6
00344255 0385 0D324000 ADD EAX,DWORD PTR SS:[EBP+40320D]
0034425B 2B85 29324000 SUB EAX,DWORD PTR SS:[EBP+403229]
00344261 8BDE MOV EBX,ESI
00344263 2BD8 SUB EBX,EAX
00344265 8958 FC MOV DWORD PTR DS:[EAX-4],EBX
；調整後的偏移
00344268 66:C740 FA 90E8 MOV WORD PTR DS:[EAX-6],0E890
；改成CALL HOOK_JMP_ENTRY
0034426E 83C7 08 ADD EDI,8
00344271 ^EB D5 JMP SHORT 00344248
；======為方便大家看，把HOOK_CALL_ENTRY的處理附在這裡=========================================
003445B5 50 PUSH EAX
;HOOK_JMP_ENTRY
003445B6 60 PUSHAD
003445B7 E8 06000000 CALL 003445C2
；首先一個SEH
003445BC 8B6424 08 MOV ESP,DWORD PTR SS:[ESP+8]
003445C0 EB 20 JMP SHORT 003445E2
003445C2 64:FF35 00000000 PUSH DWORD PTR FS:[0]
003445C9 64:8925 00000000 MOV DWORD PTR FS:[0],ESP
003445D0 9C PUSHFD
003445D1 810C24 00010000 OR DWORD PTR SS:[ESP],100
003445D8 9D POPFD
003445D9 90 NOP
003445DA 64:8F05 00000000 POP DWORD PTR FS:[0]
003445E1 E9 DB E9
003445E2 64:8F05 00000000 POP DWORD PTR FS:[0]
003445E9 58 POP EAX
003445EA E8 00000000 CALL 003445EF
；SEH結束，開始解密
003445EF 5D POP EBP
003445F0 81ED 18284000 SUB EBP,402818
003445F6 8B7C24 24 MOV EDI,DWORD PTR SS:[ESP+24]
；函式返回地址
003445FA 8DB5 2E164000 LEA ESI,DWORD PTR SS:[EBP+40162E]
；
00344600 03B5 55324000 ADD ESI,DWORD PTR SS:[EBP+403255]
；加密的子項表格：（VA_，KEY）
00344606 8B06 MOV EAX,DWORD
PTR DS:[ESI] ；取出一項VA_
00344608 33D2 XOR EDX,EDX
；
0034460A B9 02000000 MOV ECX,2
；
0034460F F7E1 MUL ECX
；
00344611 D1E8 SHR EAX,1
；遮蔽掉最高位
00344613 0385 0D324000 ADD EAX,DWORD PTR SS:[EBP+40320D]
00344619 2B85 29324000 SUB EAX,DWORD PTR SS:[EBP+403229]
；表格子項資料
0034461F 3BF8 CMP EDI,EAX
；函式返回地址=表格某子項資料嗎？
00344621 75 0A JNZ SHORT 0034462D
00344623 0AD2 OR DL,DL
；搜尋到對應子項
00344625 75 04 JNZ SHORT 0034462B
；CASE CALL [XXXXXXXXX]
00344627 EB 09 JMP SHORT 00344632
；CASE JMP [XXXXXXXX]
00344629 EB 02 JMP SHORT 0034462D
0034462B EB 35 JMP SHORT 00344662
0034462D 83C6 08 ADD ESI,8
；搜尋下一項
00344630 ^EB D4 JMP SHORT 00344606
00344632 8B46 04 MOV EAX,DWORD PTR
DS:[ESI+4] ；KEY
00344635 0385 45324000 ADD EAX,DWORD PTR SS:[EBP+403245]
；CRC_KEY，此CRC_KEY來自3443B2處的計算結果
0034463B 03BD 29324000 ADD EDI,DWORD PTR SS:[EBP+403229]
00344641 2BBD 0D324000 SUB EDI,DWORD PTR SS:[EBP+40320D]
00344647 2BC7 SUB EAX,EDI
；KEY+CRC_KEY-VA_
00344649 F7D0 NOT EAX
；NOT (KEY+CRC_KEY-VA_)
0034464B C1C0 10 ROL EAX,10
；ROL (KEY+CRC_KEY-VA_)，10
0034464E 0385 0D324000 ADD EAX,DWORD PTR SS:[EBP+40320D]
00344654 2B85 29324000 SUB EAX,DWORD PTR SS:[EBP+403229]
；解密出XXXXXXXX
0034465A 8B00 MOV EAX,DWORD
PTR DS:[EAX] ；取得原函式地址
0034465C 894424 20 MOV DWORD PTR SS:[ESP+20],EAX
；放入堆疊
00344660 61 POPAD
00344661 C3 RETN
；轉到原函式
00344662 8B46 04 MOV EAX,DWORD PTR
DS:[ESI+4]
00344665 0385 45324000 ADD EAX,DWORD PTR SS:[EBP+403245]
0034466B 03BD 29324000 ADD EDI,DWORD PTR SS:[EBP+403229]
00344671 2BBD 0D324000 SUB EDI,DWORD PTR SS:[EBP+40320D]
00344677 2BC7 SUB EAX,EDI
00344679 F7D0 NOT EAX
0034467B C1C0 10 ROL EAX,10
0034467E 0385 0D324000 ADD EAX,DWORD PTR SS:[EBP+40320D]
00344684 2B85 29324000 SUB EAX,DWORD PTR SS:[EBP+403229]
0034468A 8B00 MOV EAX,DWORD
PTR DS:[EAX]
0034468C 894424 24 MOV DWORD PTR SS:[ESP+24],EAX
00344690 61 POPAD
00344691 83C4 04 ADD ESP,4
；這個與前面不同處在於差了一個堆疊值
00344694 C3 RETN
；因此返回地址會不同，相當於CALL和JMP的區別
；==============================================================================
處理完HOOK_JMP後來到這裡：
00344273 8BB5 49324000 MOV ESI,DWORD PTR SS:[EBP+403249]
；加密標誌：CALL DWORD PTR [XXXXXXX]
00344279 0BF6 OR ESI,ESI
；此程式沒設定這項，可以跳過
0034427B 74 27 JE SHORT 003442A4
；就不分析了
0034427D 03B5 0D324000 ADD ESI,DWORD PTR SS:[EBP+40320D]
00344283 EB 18 JMP SHORT 0034429D
00344285 8B46 02 MOV EAX,DWORD PTR
DS:[ESI+2]
00344288 C1E0 05 SHL EAX,5
0034428B 0385 4D324000 ADD EAX,DWORD PTR SS:[EBP+40324D]
00344291 2BC6 SUB EAX,ESI
00344293 48 DEC EAX
00344294 83E8 05 SUB EAX,5
00344297 8946 02 MOV DWORD PTR DS:[ESI+2],EAX
0034429A 83C6 06 ADD ESI,6
0034429D 66:813E 90E9 CMP WORD PTR DS:[ESI],0E990
003442A2 ^74 E1 JE SHORT 00344285
003442A4 8B85 59324000 MOV EAX,DWORD PTR SS:[EBP+403259]
；這裡是對DELPHI的MAINFORM的特別處理
003442AA 0BC0 OR EAX,EAX
；其實就是把MAINFORM從原始碼區搬到了殼裡
003442AC 74 3F JE SHORT 003442ED
；只需調整一下首指標就行了
003442AE 8DB5 2E164000 LEA ESI,DWORD PTR SS:[EBP+40162E]
003442B4 03F0 ADD ESI,EAX
；
003442B6 8B1E MOV EBX,DWORD
PTR DS:[ESI] ；MAINFORM的原始參考RVA
003442B8 039D 0D324000 ADD EBX,DWORD PTR SS:[EBP+40320D]
；BASE ADDRESS
003442BE C706 00000000 MOV DWORD PTR DS:[ESI],0
003442C4 83C6 04 ADD ESI,4
；MAINFORM的現在的地址
003442C7 8933 MOV DWORD PTR
DS:[EBX],ESI ；把MAINFORM的現在的地址添到其參考位置
003442C9 0FB70E MOVZX ECX,WORD PTR
DS:[ESI]
003442CC 83C6 02 ADD ESI,2
003442CF 8B9D 0D324000 MOV EBX,DWORD PTR SS:[EBP+40320D]
003442D5 8B95 29324000 MOV EDX,DWORD PTR SS:[EBP+403229]
003442DB EB 0C JMP SHORT 003442E9
003442DD 2956 02 SUB DWORD PTR DS:[ESI+2],EDX
003442E0 015E 02 ADD DWORD PTR DS:[ESI+2],EBX
；調整重定位，對我們的EXE來說，可以省略
003442E3 0FB706 MOVZX EAX,WORD PTR
DS:[ESI]
003442E6 03F0 ADD ESI,EAX
003442E8 49 DEC ECX
003442E9 0BC9 OR ECX,ECX
003442EB ^75 F0 JNZ SHORT 003442DD
003442ED 6A 04 PUSH 4
003442EF 68 00100000 PUSH 1000
003442F4 68 00100000 PUSH 1000
003442F9 6A 00 PUSH 0
003442FB FF95 09324000 CALL DWORD PTR SS:[EBP+403209]
；VirtualAlloc
00344301 8985 65324000 MOV DWORD PTR SS:[EBP+403265],EAX
00344307 8185 65324000 00>ADD DWORD PTR SS:[EBP+403265],1000
00344311 64:FF35 30000000 PUSH DWORD PTR FS:[30]
；這一段我就知道是ANTI DUMP
00344318 58 POP EAX
；我沒看過詳細的資料
00344319 85C0 TEST EAX,EAX
；也無法詳細說明什麼了
0034431B 78 0F JS SHORT 0034432C
0034431D 8B40 0C MOV EAX,DWORD PTR
DS:[EAX+C]
00344320 8B40 0C MOV EAX,DWORD PTR
DS:[EAX+C]
00344323 C740 20 00100000 MOV DWORD PTR DS:[EAX+20],1000
；ANTI DUMP
0034432A EB 39 JMP SHORT 00344365
0034432C 6A 00 PUSH 0
0034432E 8D85 6A254000 LEA EAX,DWORD PTR SS:[EBP+40256A]
；344341
00344334 50 PUSH EAX
00344335 8B85 01324000 MOV EAX,DWORD PTR SS:[EBP+403201]
；GetModuleHandleA
0034433B E9 EB000000 JMP 0034442B
00344340 E8 DB E8
00344341 85D2 TEST EDX,EDX
00344343 79 20 JNS SHORT 00344365
00344345 837A 08 FF CMP DWORD PTR DS:[EDX+8],-1
00344349 75 1A JNZ SHORT 00344365
0034434B 8B52 04 MOV EDX,DWORD PTR
DS:[EDX+4]
0034434E C742 50 00100000 MOV DWORD PTR DS:[EDX+50],1000
；ANTI DUMP
00344355 64:FF35 20000000 PUSH DWORD PTR FS:[20]
0034435C 58 POP EAX
0034435D 85C0 TEST EAX,EAX
0034435F 0F85 72110000 JNZ 003454D7
00344365 8B85 5D324000 MOV EAX,DWORD PTR SS:[EBP+40325D]
；OEP RVA
0034436B 0385 0D324000 ADD EAX,DWORD PTR SS:[EBP+40320D]
；BASE ADDRESS
00344371 894424 EC MOV DWORD PTR SS:[ESP-14],EAX
；OEP
00344375 896C24 E8 MOV DWORD PTR SS:[ESP-18],EBP
00344379 C785 45324000 00>MOV DWORD PTR SS:[EBP+403245],0
；CRC_KRY=0
00344383 33C0 XOR EAX,EAX
00344385 8DB5 2E164000 LEA ESI,DWORD PTR SS:[EBP+40162E]
；=343405
0034438B B9 A0020000 MOV ECX,2A0
；長度
00344390 C1E9 02 SHR ECX,2
00344393 EB 08 JMP SHORT 0034439D
00344395 AD LODS DWORD
PTR DS:[ESI]
00344396 3185 45324000 XOR DWORD PTR SS:[EBP+403245],EAX
；CRC_KRY
0034439C 49 DEC ECX
0034439D 0BC9 OR ECX,ECX
0034439F ^75 F4 JNZ SHORT 00344395
003443A1 8DB5 EB184000 LEA ESI,DWORD PTR SS:[EBP+4018EB]
；=3436C2
003443A7 B9 12190000 MOV ECX,1912
；長度
003443AC C1E9 02 SHR ECX,2
003443AF EB 08 JMP SHORT 003443B9
003443B1 AD LODS DWORD
PTR DS:[ESI]
003443B2 3185 45324000 XOR DWORD PTR SS:[EBP+403245],EAX
；CRC_KRY
003443B8 49 DEC ECX
003443B9 0BC9 OR ECX,ECX
；最終的CRC_KRY=F60B0DCA，先記下它
003443BB ^75 F4 JNZ SHORT 003443B1
；有了它就可以對那個HOOK_CALL的表解碼了，脫殼要用的
003443BD 8B7C24 EC MOV EDI,DWORD PTR SS:[ESP-14]
；OEP
003443C1 8B7424 E8 MOV ESI,DWORD PTR SS:[ESP-18]
003443C5 8B85 1D324000 MOV EAX,DWORD PTR SS:[EBP+40321D]
003443CB 0BC0 OR EAX,EAX
003443CD 75 14 JNZ SHORT 003443E3
003443CF 8B85 41364000 MOV EAX,DWORD PTR SS:[EBP+403641]
003443D5 0BC0 OR EAX,EAX
003443D7 74 0A JE SHORT 003443E3
003443D9 0385 0D324000 ADD EAX,DWORD PTR SS:[EBP+40320D]
003443DF 60 PUSHAD
003443E0 FFD0 CALL EAX
003443E2 61 POPAD
003443E3 897C24 EC MOV DWORD PTR SS:[ESP-14],EDI
；
003443E7 897424 E8 MOV DWORD PTR SS:[ESP-18],ESI
003443EB FF85 1D324000 INC DWORD PTR SS:[EBP+40321D]
003443F1 8B9D 3D324000 MOV EBX,DWORD PTR SS:[EBP+40323D]
003443F7 83FB 01 CMP EBX,1
；幾種返回OEP的處理方式
003443FA 75 0E JNZ SHORT 0034440A
003443FC 61 POPAD
；我們這個是這種
003443FD 8B4424 CC MOV EAX,DWORD PTR SS:[ESP-34]
；OEP
00344401 8D78 02 LEA EDI,DWORD PTR
DS:[EAX+2] ；OEP+2
00344404 55 PUSH EBP
；把OEP處的2行程式碼搬過來了
00344405 8BEC MOV EBP,ESP
；OEP處被換成了CALL EDI；POP EAX；
00344407 50 PUSH EAX
00344408 EB 20 JMP SHORT 0034442A
；
0034440A 83FB 02 CMP EBX,2
0034440D 75 15 JNZ SHORT 00344424
0034440F 61 POPAD
00344410 8B4424 C8 MOV EAX,DWORD PTR SS:[ESP-38]
00344414 FFB0 41324000 PUSH DWORD PTR DS:[EAX+403241]
0034441A 8B4424 D0 MOV EAX,DWORD PTR SS:[ESP-30]
0034441E 50 PUSH EAX
0034441F 8D78 02 LEA EDI,DWORD PTR
DS:[EAX+2]
00344422 EB 06 JMP SHORT 0034442A
00344424 61 POPAD
00344425 8B4424 CC MOV EAX,DWORD PTR SS:[ESP-34]
00344429 50 PUSH EAX
0034442A C3 RETN
；TO OEP
分析到此結束。
#################################################################################################
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