liaison edi

is not running in the compiler environment and does not include to declare functions, there is no function table for the application. Therefore, shellcode needs to find its own API function address and then forcibly call it.(1) Find the kernel32.dll base address:The APIs used in the shellcode are generally unrelated to the user interface, because it is used in kernel32.dll to do bad things. Therefore, we must first find the base address of kernel32 to further find the specific address of each A

18. String processingThe preceding article describes the processing of strings, which are arrays of type Byte, and now implement a piece of code to copy the string string1 data into the string string2The code is as follows" Hello world! " 0 0 . Codemov-mov ebx,0. Repeatmov al, String1[ebx]mov string2[ebx], AlInc Ebx.untilcxzby ecx Decrement, the string string1 each character at once to string2, where the EBX base register is used. can also be passed through ESI and

, that is, taking the pixel (x, y) as the center, to (x-radius, Y) and (x + radius, Y) after the pixels are multiplied by weights, the new pixels are obtained and written to the corresponding points on the target image. The process ends. Since the above processing process only performs a "Ten" operation on each pixel of the image, the operation on each pixel point is greatly reduced, and the greater the fuzzy length, the more reduced. As mentioned above, the Q = 3 and r = 5 Fuzzy Operations only

: Baiyun district .. 1. dib32-bit, pre-multiplication alpha proc AlphaPreMul uses ebx edi, pBitDst,pDstRect,dwDstWight local dwWight:DWORD,dwHight:DWORD ;--------------------------------------- mov edi,[pBitDst] mov edx,[pDstRect] ;(p,q) mov eax,[edx+RECT.right] test eax,eax jz .exit mov [dwWight],eax mov eax,[edx+RECT.bottom] test e

--------------------------------------------------------------------------------. Data; InitializationBEGIN_INITDd offset Shap_destructor_FunctDd offset Shap_getArea_FunctDd offset Shap_setColor_FunctDd NULLEND_INIT--------------------------------------------------------------------------------. CodeShape_Init PROC uses edi esi lpTHIS: DWORD; Actual call InitializationSET_CLASS Shape; Set edi assmue to Shap

the kernel shellcode and the user shellcode. The kernel shellcode is responsible for returning and executing the user shellcode. The user shellcode is a common function. You must add the firewall-based code. The following is the kernel shellcode Code, which does not provide complete shellcode, because first, it is only for technical research, but not to be used by people who do not know nothing about the technology but only want to destroy it. The machine code to be converted is only 230 bytes

ECx, dword ptr [dwmovenum]SHR eax, ClRETMovebitr endp; //////////////////////////////////////// ///////////////////////////Bin2dec proc pbin: DWORD ; Argument checkMoV eax, dword ptr [pbin]Test eax, eaxJZ @ exitPush ESIMoV ESI, eaxXOR eax, eaxXOR edX, EDXClD@@:LodsbTest Al, AlJZ finalflag; FinalCMP Al, 30 h; 0JZ isbinCMP Al, 31 H; 1JZ isbinJnz @ B Isbin:Add edX, EDXLea edX, [edX + eax-30 h]JMP @ BFinalflag:MoV eax, EDXPop ESI@ Exit:RETBin2dec endp; //////////////////////////////////////// /////

In Windows 7x86, the implementation of the kernel module NT (that is, the ntkrpamp module: Offset machine code command nt! Memset: 83c8ce40 8b54240c mov edX, dword ptr [esp + 0ch] 83c8ce44 8b4c2404 mov ECx, dword ptr [esp + 4] 83c8ce48 85d2 test edX, edx83c8ce4a 744f je nt! Memset + 0x5b (83c8ce9b) 83c8ce4c 33c0 XOR eax, eax83c8ce4e 8a442408 mov Al, byte PTR [esp + 8] 83c8ce52 57 push edi83c8ce53 8bf9 mov EDI, 10983fa04 CMP edX, 483c8ce58 7231 JB nt!

. basedllname.buffer00417013 8B mov edx,dword ptr [edx]//edx = _ldr_data_table_entry. ininitializationorderlinks.flink00417015 7E 0C cmp byte ptr [esi+0ch],33h//search "kernel32.d ll "00417019 F2 jne shellcode+0dh (41700Dh) 0041701B C7 mov Edi,eax//edi = kernel32.dll.DllBase (image_dos_header) 0041701D 3C add edi, DWORD ptr [eax+3ch]//

Modifyfile,pmapaddr; Modify memory block contentsInvoke unmapviewoffile,pmapaddr; unlock file mappings. endifInvoke Closehandle,hmap; Close memory-mapped file. endifInvoke CloseHandle, hfile; Close file. endifRetWinMain ENDP; Get the file name to process; Return: If eax=null indicates that no file name is provided for processing; otherwise eax point to the filename addressGetFileName ProcInvoke Getfilenamefromcommandline,addr FileName. If Eax==nullCall Getfilenamefromdialog. endifRetGetFileName

to add CALLGATE for MGF virus: _ DwFlag ----- bit 0: 0 = ntldr, 1 = PE; bit 1:0 = mem, 1 = file;Bit 2: 0 = auto (ansi/unicode), 1 = ansi......................... Else; _ dwFlag; write CALLGATE if the file is NTLDRLea esi, szGdtData [ebx]Mov edi, @ lpFileMapMov ecx, @ dwFileSize@@:Inc ediPush esiPush ediPush ecxMov ecx, 10 hRepz cmpsbPop ecxPop ediPop esiLoopnz @ B In NTLDR, search for RING0 and CS in 16 bytes. After DS finds the d

: integer; var table: tgraytable); ASM push ebx cmp eax,-255 jge @ 1 mov eax,-255 JMP @ 2 @ 1: CMP eax, 255 jle @ 2 mov eax, 255 @ 2: Push eax mov EBX, 255 fild dword ptr [esp] fwait mov [esp], EBX fidiv dword ptr [esp] // bright/255 fwait XOR ECx, ECx test eax, eax JG @ loop xor ebx, EBX // mask = bright> 0? 255: 0 @ loop: mov [esp], ECx XOR [esp], EBX fild dword ptr [esp] fmul ST (0), ST (1) fistp dword ptr [esp] fwait mov eax, [esp] add eax, ECx mov [edX], Al // table [I] = (I ^ mask) * brigh

To enable batch packaging of EDI X12 files in BizTalk, follow these steps: 1) Configure party's X12 Properties> party as interchange receiver> interchange batch creation settings 1.1 configure filter criteria 1.2 set release criteria"External release trigger" 1.3 Note: If a sendport needs to subscribe to the batch transaction set of the party, you must set the following subscription conditions: