花了点时间写了个VMP自动分析与还原,由于还原部分还未完善源码暂不上传。
有兴趣的朋友可以加我一起研究,Q:2237227000
虚拟机入口:
------------------------------------------
01105598 6898B3B812 push 12B8B398h
0110559D E88FCD0000 call 01112331h
01112331 E84BECFFFF call 01110F81h
01110F81 E898200000 call 0111301Eh
0111301E 8D642408 lea esp , dword ptr [esp +08h]
01113022 0F80D5DFFFFF jo 01110FFDh
01113028 9C pushfd
01113029 893424 mov dword ptr [esp ], esi
0111302C E9892BFFFF jmp 01105BBAh
01105BBA 66F7D6 not si
01105BBD 60 pushad
01105BBE 874C241C xchg dword ptr [esp +1Ch], ecx
01105BC2 660FB6C9 movzx cx , cl
01105BC6 FF742404 push dword ptr [esp +04h]
01105BCA 668B742408 mov si , word ptr [esp +08h]
01105BCF E883040000 call 01106057h
01106057 89542420 mov dword ptr [esp +20h], edx
0110605B 660FBEF3 movsx si , bl
0110605F 60 pushad
01106060 660FBECB movsx cx , bl
01106064 895C243C mov dword ptr [esp +3Ch], ebx
01106068 5B pop ebx
01106069 660FBEF2 movsx si , dl
0110606D E98D710000 jmp 0110D1FFh
0110D1FF 8D3485EE5FBF0A lea esi , dword ptr [0ABF5FEEh+eax *4]
0110D206 896C2434 mov dword ptr [esp +34h], ebp
0110D20A E8272C0000 call 0110FE36h
0110FE36 8D34A51E30647C lea esi , dword ptr [7C64301Eh]
0110FE3D 66F7D5 not bp
0110FE40 E83B2A0000 call 01112880h
01112880 89442438 mov dword ptr [esp +38h], eax
01112884 59 pop ecx
01112885 FF742404 push dword ptr [esp +04h]
01112889 66F7D6 not si
0111288C 66F7D3 not bx
0111288F 9C pushfd
01112890 8F442434 pop dword ptr [esp +34h]
01112894 5B pop ebx
01112895 E9E1EBFFFF jmp 0111147Bh
0111147B E88A1B0000 call 0111300Ah
0111300A 9C pushfd
0111300B 897C2434 mov dword ptr [esp +34h], edi
0111300F 0FB6F2 movzx esi , dl
01113012 0FBDEF bsr ebp , edi
01113015 89542430 mov dword ptr [esp +30h], edx
01113019 E9E29FFFFF jmp 0110D000h
0110D000 E9DC520000 jmp 011122E1h
011122E1 59 pop ecx
011122E2 C74424280000B mov dword ptr [esp +28h], 00B90000h
011122EA 0FBDF5 bsr esi , ebp
011122ED 66FFC5 inc bp
011122F0 660FBEDB movsx bx , bl
011122F4 8B742454 mov esi , dword ptr [esp +54h]
011122F8 45 inc ebp
011122F9 660FB6E8 movzx bp , al
011122FD E9B1FEFFFF jmp 011121B3h
011121B3 46 inc esi
011121B4 660FB3FD btr bp , di
011121B8 E9FE35FFFF jmp 011057BBh
011057BB F7D6 not esi
011057BD 66C1DF02 rcr di , 0002h
011057C1 81EE3D394877 sub esi , 7748393Dh
011057C7 660FB3CF btr di , cx
011057CB 0FACCD1E shrd ebp , ecx , 0000001Eh
011057CF FEC0 inc al
011057D1 66C1ED07 shr bp , 0007h
011057D5 F7DE neg esi
011057D7 E804090000 call 011060E0h
011060E0 660FB6EB movzx bp , bl
011060E4 46 inc esi
011060E5 F8 clc
011060E6 66F7D5 not bp
011060E9 894C2408 mov dword ptr [esp +08h], ecx
011060ED F9 stc
011060EE C1CE19 ror esi , 19h
011060F1 E974720000 jmp 0110D36Ah
0110D36A D2DB rcr bl , cl
0110D36C 8D6C242C lea ebp , dword ptr [esp +2Ch]
0110D370 0FCF bswap edi
0110D372 0F96C7 setbe bh
0110D375 349D xor al , FFFFFF9Dh
0110D377 81EC94000000 sub esp , 00000094h
0110D37D 660FB6D9 movzx bx , cl
0110D381 89E7 mov edi , esp
0110D383 66D3FB sar bx , cl
0110D386 C0FB06 sar bl , 00000006h
0110D389 660FBDD9 bsr bx , cx
0110D38D 89F3 mov ebx , esi
0110D38F 240E and al , 0000000Eh
0110D391 38C8 cmp al , cl
0110D393 38CD cmp ch , cl
0110D395 66FFC1 inc cx
0110D398 037500 add esi , dword ptr [ebp +00h]
0110D39B 80E151 and cl , 00000051h
0110D39E 30F0 xor al , dh
0110D3A0 D2F1 sal cl , cl
0110D3A2 C0F004 sal al , 00000004h
0110D3A5 8A46FF mov al , byte ptr [esi -01h]
0110D3A8 08ED or ch , ch
0110D3AA 49 dec ecx
0110D3AB 660FB6CA movzx cx , dl
0110D3AF 80D5D9 adc ch , FFFFFFD9h
0110D3B2 00D8 add al , bl
0110D3B4 8D0CCDC7651598 lea ecx , dword ptr [981565C7h+ecx *8]
0110D3BB E9948AFFFF jmp 01105E54h
01105E54 2C3C sub al , 0000003Ch
01105E56 0F99C1 setns cl
01105E59 F9 stc
01105E5A F7D1 not ecx
01105E5C C0C002 rol al , 00000002h
01105E5F F6C126 test cl , 00000026h
01105E62 66C1C904 ror cx , 0004h
01105E66 0FACF918 shrd ecx , edi , 00000018h
01105E6A 10F5 adc ch , dh
01105E6C F6D8 neg al
01105E6E 0FBCCD bsf ecx , ebp
01105E71 0FB6CB movzx ecx , bl
01105E74 FEC9 dec cl
01105E76 6681D92DE3 sbb cx , E32Dh
01105E7B 3412 xor al , 00000012h
01105E7D FECD dec ch
01105E7F 60 pushad
01105E80 F6D5 not ch
01105E82 0FC9 bswap ecx
01105E84 00C3 add bl , al
01105E86 660FBAE40B bt sp , 000Bh
01105E8B 9C pushfd
01105E8C E9A4000000 jmp 01105F35h
01105F35 660FBBE1 btc cx , sp
01105F39 0FB6C0 movzx eax , al
01105F3C C0D102 rcl cl , 00000002h
01105F3F 55 push ebp
01105F40 B5E1 mov ch , E1h
01105F42 8B0C85642A1101 mov ecx , dword ptr [01112A64h+eax *4]
01105F49 9C pushfd
01105F4A 9C pushfd
01105F4B C1C913 ror ecx , 13h
01105F4E 0FBAE10A bt ecx , 0Ah
01105F52 E9C5BE0000 jmp 01111E1Ch
01111E1C 81C1B22505EB add ecx , EB0525B2h
01111E22 F5 cmc
01111E23 38C2 cmp dl , al
01111E25 F7D9 neg ecx
01111E27 E8AA42FFFF call 011060D6h
011060D6 E83F6E0000 call 0110CF1Ah
0110CF1A E83087FFFF call 0110564Fh
0110564F 4E dec esi
01105650 85CA test edx , ecx
01105652 6849FEB96E push 6EB9FE49h
01105657 81F19ED2C1E5 xor ecx , E5C1D29Eh
0110565D 0FA3DC bt esp , ebx
01105660 F9 stc
01105661 81C10000B900 add ecx , 00B90000h
01105667 68488F8842 push 42888F48h
0110566C 6689642404 mov word ptr [esp +04h], sp
01105671 E91B080000 jmp 01105E91h
01105E91 894C2440 mov dword ptr [esp +40h], ecx
01105E95 68EE88E91E push 1EE988EEh
01105E9A FF742444 push dword ptr [esp +44h]
01105E9E C24800 retn 0048h ------------------------------------------------------
------------------------------------------------------
OpCode 指针算法
----------------------inc esi not esi sub esi , 7748393Dhneg esi inc esi ror esi , 19h
ByteDate 算法
----------------------mov al , byte ptr [esi -01h]add al , bl sub al , 0000003Chrol al , 00000002hneg al xor al , 00000012hadd bl , al movzx eax , al
Handle 指针算法
----------------------mov ecx , dword ptr [01112A64h+eax *4]ror ecx , 13hadd ecx , EB0525B2hneg ecx dec esi xor ecx , E5C1D29Ehadd ecx , 00B90000h
------------------------------------------------------
------------------------------------------------------ VMP 自动分析启动:
--------------------------------------------
Handle: 01106011
----------------------------------
01106011 8D04752BBF229B lea eax , dword ptr [9B22BF2Bh+esi *2]
01106018 D406 aam 06h
0110601A 0F9BC2 setnp dl
0110601D 66D3C8 ror ax , cl
01106020 8B4500 mov eax , dword ptr [ebp +00h]
01106023 F6DA neg dl
01106025 8A5504 mov dl , byte ptr [ebp +04h]
01106028 F5 cmc
01106029 0FA3C3 bt ebx , eax
0110602C 80FF2E cmp bh , 0000002Eh
0110602F 68C6F7DEF2 push F2DEF7C6h
01106034 83C506 add ebp , 06h
01106037 60 pushad
01106038 C60424FD mov byte ptr [esp ], FFFFFFFDh
0110603C E96B9D0000 jmp 0110FDACh
0110FDAC 368810 mov byte ptr [eax ], dl
0110FDAF 9C pushfd
0110FDB0 C60424D2 mov byte ptr [esp ], FFFFFFD2h
0110FDB4 9C pushfd
0110FDB5 FF3424 push dword ptr [esp ]
0110FDB8 8D642430 lea esp , dword ptr [esp +30h]
0110FDBC E9DAD5FFFF jmp 0110D39Bh
0110D39B 80E151 and cl , 00000051h
0110D39E 30F0 xor al , dh
0110D3A0 D2F1 sal cl , cl
0110D3A2 C0F004 sal al , 00000004h
0110D3A5 8A46FF mov al , byte ptr [esi -01h] ......(由于代码太多,中间部分省略。)
--------------------------------------------
Handle: 01105B25
----------------------------------
01105B25 F8 clc
01105B26 8B4500 mov eax , dword ptr [ebp +00h]
01105B29 F8 clc
01105B2A 8A5504 mov dl , byte ptr [ebp +04h]
01105B2D F5 cmc
01105B2E 83C506 add ebp , 06h
01105B31 9C pushfd
01105B32 9C pushfd
01105B33 268810 mov byte ptr [eax ], dl
01105B36 52 push edx
01105B37 FF3424 push dword ptr [esp ]
01105B3A 8D642410 lea esp , dword ptr [esp +10h]
01105B3E E958780000 jmp 0110D39Bh
0110D39B 80E151 and cl , 00000051h
0110D39E 30F0 xor al , dh
0110D3A0 D2F1 sal cl , cl
0110D3A2 C0F004 sal al , 00000004h
0110D3A5 8A46FF mov al , byte ptr [esi -01h]
--------------------------------------------
分析结束
--------------------------------------------
Handler Count:52
--------------------------------------------
伪指令解析开始:
----------------------------
H:(00): 01106011 -> STORE_SS_B
H:(01): 0110FC58 -> DIV_D
H:(02): 0110ED66 -> STORE_DS_W
H:(03): 011113D4 -> STORE_SS_W
H:(04): 01105C55 -> BRANCH
H:(05): 0110F6EA -> EXIT_VM
H:(06): 011115A3 -> STORE_DS_D
H:(07): 0110FD77 -> LOAD_DS_W
H:(08): 01113056 -> ADD_W
H:(09): 011055A2 -> STORE_SS_D
H:(10): 011060D1 -> NOR_B
H:(11): 0110573B -> ADD_D
H:(12): 01110FBF -> LOAD_SS_W
H:(13): 0110597C -> SHR_W
H:(14): 01105C41 -> STORE_DS_B
H:(15): 01112FA8 -> SHLD_D
H:(16): 0110D20F -> SET_STACK
H:(17): 011110CE -> SHRD_D
H:(18): 0110F57A -> SHL_B
H:(19): 0111240F -> PUSH_I_D_W
----------------------------mov ax , word ptr [esi -02h]xchg al , ah xor ax , bx sub ax , 00007B74hxchg al , ah xor ax , 0000D140hneg ax xor bx , ax cwde add esi , FFFFFFFEh
----------------------
H:(20): 01105DB8 -> POP_R_W
----------------------------mov al , byte ptr [esi -01h]sub al , bl neg al not al inc al not al sub bl , al dec esi
----------------------
H:(21): 01105EC7 -> SHR_D
H:(22): 0111219C -> PUSH_I_D_B
----------------------------mov al , byte ptr [esi -01h]add al , bl not al sub al , 00000042hneg al add esi , FFFFFFFFhinc al add bl , al cbw cwde
----------------------
H:(23): 01112EA9 -> LOAD_DS_D
H:(24): 0110594E -> LOAD_SS_D
H:(25): 011060F6 -> LOAD_FS_D
H:(26): 01105939 -> ADD_B
H:(27): 01105E3B -> PUSH_STACK_W
H:(28): 0110FE31 -> SHL_D
H:(29): 01112901 -> PUSH_R_W
----------------------------mov al , byte ptr [esi -01h]sub esi , 01hsub al , bl neg al not al inc al not al sub bl , al
----------------------
H:(30): 01105C9B -> POP_R_B
----------------------------mov al , byte ptr [esi -01h]add al , bl not al add al , FFFFFFEChrol al , 00000007hxor al , 00000038hadd bl , al lea esi , dword ptr [esi -01h]
----------------------
H:(31): 01112214 -> PUSH_R_B
----------------------------movzx eax , byte ptr [esi -01h]add al , bl not al add al , FFFFFFEChrol al , 00000007hxor al , 00000038hadd bl , al dec esi
----------------------
H:(32): 011130CE -> NOR_D
H:(33): 0111238D -> IDIV
H:(34): 0110CE77 -> MUL_D
H:(35): 01112E6F -> SHL_W
H:(36): 01105BEA -> PUSH_R_D
----------------------------inc al not al dec al xor al , FFFFFF98hand al , 0000003Ch
----------------------
H:(37): 01111171 -> POP_R_D
----------------------------inc al not al dec al xor al , FFFFFF98hand al , 0000003Ch
----------------------
H:(38): 0110F6B6 -> SHR_B
H:(39): 0111156C -> PUSH_I_D
----------------------------mov eax , dword ptr [esi -04h]bswap eax xor eax , ebx add eax , E0F98A24hnot eax xor eax , 4DFCFC2Fhlea esi , dword ptr [esi -04h]rol eax , 0Ehxor ebx , eax
----------------------
H:(40): 01110EEA -> PUSH_I_W
----------------------------mov ax , word ptr [esi -02h]xchg al , ah xor ax , bx sub ax , 00007B74hxchg al , ah sub esi , 02hxor ax , 0000D140hneg ax xor bx , ax
----------------------
H:(41): 011128E2 -> STORE_ES_D
H:(42): 01112638 -> PUSH_I_B
----------------------------mov al , byte ptr [esi -01h]add al , bl not al sub al , 00000042hneg al lea esi , dword ptr [esi -01h]inc al add bl , al
----------------------
H:(43): 011058B2 -> LOAD_SS_B
H:(44): 01110F58 -> SET_STACK_W
H:(45): 0111264A -> NOR_W
H:(46): 0110FDC1 -> STORE_FS_D
H:(47): 011114F5 -> LOAD_DS_B
H:(48): 011115C0 -> POP_FLAG
H:(49): 01111DDE -> IMUL
H:(50): 01105F71 -> PUSH_STACK
H:(51): 01105B25 -> STORE_ES_B
----------------------------
解析结束:
未能解析的伪指令个数: 0
部分还原:
label_BD16520A: (references=0)
tv1792- = ASSIGN SS:[EBP+8]
tv1797- = ASSIGN SS:[EBP+8]
tv1800- = BITXOR DS:[tv1792-], EAX
DS:[tv1797-] = ASSIGN tv1800-
tv1807- = ASSIGN SS:[EBP+8]
SS:[EBP-16] = ASSIGN DS:[tv1807-]
EAX = ADD 4, SS:[EBP+8]
EAX = ASSIGN DS:[EAX]
SS:[EBP-20] = ASSIGN EAX
ECX = ASSIGN SS:[EBP+8]
ESP = ASSIGN DS:[ECX+8]
SS:[EBP-24] = ASSIGN ESP
tv1845-, EFLAGS = COMPARE(NE) 0, global_1000d044
EDX = ASSIGN ESP
CONDITIONALBRANCH(True) tv1845-, label_1005AAFC, label_1004F87E
label_1004AE87: (references=0)
local_FFFFFFF9 = ASSIGN EDX
local_FFFFFFF7 = ASSIGN EAX
tv1995- = BITXOR 138077080(0x083ae398), local_FFFFFFF5
EDX = ASSIGN SS:[EBP+8]
DS:[EDX] = ASSIGN 3469594061(0xcecdcdcd)
tv2009- = BITOR 65536(0x00010000), global_100163d4
EAX = ASSIGN tv2009-
global_100163d4 = ASSIGN EAX
tv2020- = BITXOR 138077080(0x083ae398), tv1995-
local_FFFFFFF8 = ASSIGN tv2009-
local_FFFFFFF5 = ASSIGN tv2020-
GOTO label_1004ADB9
label_1005B4FE: (references=0)
SS:[ESP], {&ESP:ESP} = push EBP
tv2150- = ASSIGN ESP
SS:[ESP], {&ESP:ESP} = push 0
ECX = ASSIGN SS:[tv2150-+8]
tv2162- = BITAND 255(0x000000ff), ECX
tv2165-, EFLAGS = COMPARE(LT) 255(0x000000ff), tv2162-
local_FFFFFFFC = ASSIGN tv2162-
local_FFFFFFFB = ASSIGN EFLAGS
local_FFFFFFF9 = ASSIGN 0
local_FFFFFFF8 = ASSIGN EBX
local_FFFFFFF7 = ASSIGN tv2150-
CONDITIONALBRANCH(True) tv2165-, label_1004BD25, label_10035AE3
label_1005AAFC: (references=0)
SS:[ESP], {&ESP:ESP} = push &global_100101e4
SS:[ESP], {&ESP:ESP} = push 0
SS:[ESP], {&ESP:ESP} = push 0
SS:[ESP], {&ESP:ESP} = push &global_10005a30
SS:[ESP], {&ESP:ESP} = push 0
SS:[ESP], {&ESP:ESP} = push 0
tv2404- = ASSIGN &global_1002602d
DS:[tv2404-] = ASSIGN 104(0x68)
DS:[tv2404-+1] = ASSIGN 2568114807(0x99125277)
DS:[tv2404-+5] = ASSIGN 232(0xe8)
DS:[tv2404-+6] = ASSIGN 4294819895(0xfffdc037)
call KERNEL32.dll.CreateThread
GOTO label_99125277
未完待续...
[注意]传递专业知识、拓宽行业人脉——看雪讲师团队等你加入!
上传的附件: